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Multiquip Grinder DFG Series User's Manual

1. 36 39 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 TABLE OF CONTENTS 40 Preventative Maintenance Check List 40 Checking V Belt Tension and Aliunment 40 Installing a Replacement V Belt or Centrifugal Clutch or 41 43 Replacing the LORD Type Elastomeric Mounts on the Multi Accessory Discs 44 Lubrication Requirements 45 46 46 TSN 47 MOTO I 47 Ga SOMME EM a 47 48 I L E ET 49 SPECIES ve 50 Explanation of Code In Remarks 52 MENN 53 Component Parts Drawings Operator Handle Assembly Electric 54 55 Operator Handle Assembly Gasolino L 56 57 ECC MIO o ST AG 58 59 Gasoline Engine bate in UU 60 61 62 63 Trans misson ASSEMD 64 65 gignere 66 67 SAC and 38561015 ee 68 69 SONE FS ainiin 70 71 SRA FET TAG e T 72 73 GM BOKSEN 74 75 PE PSP 76 77 Terms and Condition OR sale PIAS uuu uu S PIU 78 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 NOTE PAGE DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUA
2. CONNECTOR GREASE 1 8 NPT NUT HEX 1 4 20 UNG PLATED WASHER LOCK 1 4 PLATED CONNECTOR HOSE GREASELINEuu uuu u ua uu sss QTY REMARKS 1 1 9 1 S N 25853 AND ABOVE S N 25853 AND ABOVE S N 25853 AND ABOVE S N 25853 AND ABOVE S N 25853 AND ABOVE S N 25853 AND ABOVE S N 25853 AND ABOVE AR S N 25853 AND ABOVE X X CUT TO LENGTH DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 65 PAGE 66 gt lt LLI I 5 Q LO c 2 LLI lt lt o tc lt Q lt LLI e DFG SERIES SURFACE GRINDERS HEAD ASSY HEAD ASSY HEAD ASSY NO PART NO 1 29018 051 2 29018 052 3 29018 053 4 29018 054 5 29018 055 6 06502 016 7 08233 007 8 29018 056 9 29018 057 10 SFSG240120A PART NAME QT DISC MULTI ACCESSORY LH DISC MULTI ACCESSORY RH BAR MOUNTING DISC MOUNTING RUBBER BUSHING SCREW CAP 7 16 14 UNC X 2 PLATED GDE 5 NUT HEXAGON LOCKING 7 16 14 UNC PLATED SCREW COUNTERSUNK 7 16 14 UNG X 2 1 4 SCREW SOCKET 3 8 16 UNC X 1 1 2 PLATED Y 1 1 2 2 2 6 2 6 8 REMARKS DISC MOUNTING ASSEMBL
3. 5 SCREW CAP 5 16 18 UNC X 1 3 4 PLATED 5 WASHER FLAT 5 16 PLATED WASHER LOCK 5 16 PLATED NUT HEXAGON 5 16 18 UNC PLATED SCREW CAP 5 16 24 UNF X 1 PLATED GRADE 5 NUT HEXAGON 3 8 16 UNC PLATED WASHER FLAT 3 8 PLATED SCREW CAP 3 8 16 X 3 1 2 FULL THD PLATED WASHER LOCK 3 8 PLATED SEAL ADAPTER QTY 1 1 1 1 1 1 2 1 1 1 2 2 4 2 2 6 6 2 4 1 REMARKS DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 61 WHEEL ASSY WHEEL ASSY DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 62 WHEEL ASSY WHEEL ASSY LEE DFG SERIES SURFACE GRINDERS PART NO 29018 046 29018 047 29018 048 07594 024 07030 012 07033 010 07030 010 29018 049 29018 050 07030 008 07029 008 06503 010 PART NAME ARM SWING WHEEL AXLE PLATED PIN ROLL 3 16 1 1 2 WASHER FLAT 34 PLATED NUT HEXAGON 5 8 11 UNC PLATED WASHER FLAT 5 8 PLATED BEARING OILITE BOLT SHOULDER 32 10 UNC X 1 1 2 WASHER FLAT 7 PLATED WASHER LOCK 12 PLATED SCREW CAP 72 13 UNC X 1 14 PLATED QTY 2 2 1 4 2 2 2 2 2 2 2 2 OPERATION AND PARTS MANUAL REV 4 05 28 09 REMARKS PAGE 63 PAGE 64 gt lt o lt lt 9 co N LO c 2 LLI lt wa o tc lt
4. CAUTION Observe all applicable safety precautions for the solvent 4 Check the belt tension using the spring scale or belt tension tool midway between the engine clutch pulley and the transmission pulley Belt tension should measure approximately 0 22 inch at 3 1 4 to 4 3 8 lbs measured force range FIGURE 41 If tension is within specifications proceed to Step 5 If tension is not within specifications refer to INSTALLING A REPLACEMENT V BELT for specific information FIGURE 41 5 Belt alignment is checked with the straightedge Place the straightedge squarely against the transmission pulley Properly aligned pulleys should also place the straightedge squarely against the engine motor pulley Remove the straightedge and rotate the engine pulley 120 degrees FIGURE 42 Recheck alignment with the straightedge Repeat the process until the engine motor pulley is rotated a full 360 degrees Maximum allowable misalignment is 1 32 inch If pulley alignment is not within specifications refer to INSTALLING HEPLACEMENT V BELT for specific information DFG SERIES SURFACE GRINDERS 6 Install the belt guard to the main frame Determine that all safety related decals affixed to the belt guard are fully readable If any decal is not fully readable replace with a factory approved replacement part only 7 f the SURFACE GRINDER is powered by an engine reconnect the engine spark plug wire If powered by an electric mot
5. FIGURE 16 The productivity of the product is directly dependent upon the yield and tensile strength of the material being removed Material thickness has also shown to have a direct effect on overall productivity For example the SCRAPE R TACH system is a highly productive method for removing thick paint accumulations from factory floors Production rates OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 23 ASSEMBLY INSTRUCTIONS OPERATIONS of up to several hundred square feet per hour can be realized However many thin film ie 5 mill thickness and thinner urethane coatings present a much more difficult removal problem Since removal rates are also directly affected by applied down force up to 300 105 of external weight can be applied to the SURFACE GRINDER to increase productivity Cement blocks or stacked bags of cement make excellent weights and can be secured with bungy cords or other means with the provided holes in the top cover FIGURE 17 FIGURE 17 Each insert provides 8 scraping edges As an edge become dull and worn the insert can be turned and reinstalled to expose a new sharp edge FIGURE 18 When all 4 edges of one side become worn and dull the insert can be turned over to expose an additional 4 edges Many materials such as adhesives rubber deposits and mastics have the tendency to extrude or smear rather than shear from the concrete floor material The occurrence is also aggravated by higher
6. Flails and spacer washers are mounted too tight on the scarifier frame Remove and or replace flails and Spacer washers See MULTI ACCESSORY ATTACHMENTS AND APPLICATIONS EXCESSIVE JUMPING ON THE WORK SURFACE Incorrect installation of the attachment in the aluminum counterrotating disc See INSTALLING A MULTI ACCESSORY ATTACHMENT ON THE COUNTERROTATING DISCS Worn or damaged gimbal head Lord rubber mounts Replace mounts Loose gimbal head fasteners Retorque fasteners as required DFG SERIES SURFACE GRINDERS ACCELERATED V BELT WEAR Misaligned and or improperly tensioned pulleys Readjust pulleys and V belt See SERVICE section Worn pulleys Replace pulleys as required See INSTALLING A REPLACEMENT V BELT OR PULLEY Improper V belt Replace with a name brand B50 series V belt Never replace a single belt Always replace both V belts at the same time in matched sets See INSTALLING A REPLACEMENT V BELT OR PULLEY ACCELERATED BEARING WEAR AND OR FAILURE Misaligned and or improperly tensioned pulleys readjust pulleys and V belts See SERVICE section Bent transmission input or output shaft Replace affected shaft s Improper lubrication See LUBRICATION REQUIREMENTS UNEVEN GRINDING ACTION Excessive material build up on the caster wheel face surface Remove the material Excessive caster wheel bearing wear Replace the caster wheel Excessive axle wear Replace axle Flails and or spacer washers are mount
7. 2 FORMALIZED OPERATOR SAFETY PROGRAM TO BE DEVISED BY THE OWNER OF THE SURFACE GRINDER IN CONJUNCTION WITH THE CONTENTS OF THE APPLICABLE OPERATOR MANUAL AND THE APPLICABLE SAFETY AND OPERATIONAL INFORMATION VIDEO TAPE FOR THE SURFACE GRINDER AND THE APPLICABLE MATERIAL INCLUDED IN THE NATIONAL ELECTRICAL CODE 3 OSHA AND NATIONAL ELECTRIC CODE RULES AND REGULATIONS RESEARCHED FOR AND OR BY THE OWNER OF THE SURFACE GRINDER AND DEEMED APPLICABLE TO THE SAFE AND PROPER USE AND OR OPERATION OF THE SURFACE GRINDER FOR ANY SPECIFIC JOB APPLICATION 4 LOCAL LAWS REGULATIONS AND CUSTOMS RESEARCHED FOR AND OR BY THE OWNER OF THE SURFACE GRINDER AND DEEMED APPLICABLE TO THE SAFE AND PROPER USE AND OR OPERATION OF THE SURFACE GRINDER FOR ANY SPECIFIC JOB APPLICATION 5 FORMALIZED MAINTENANCE PROGRAM FOR THE SURFACE GRINDER TO BE DEVISED BY THE OWNER OF THE SURFACE GRINDER IN ACCORDANCE WITH BUT NOT NECESSARILY LIMITED TO THE SPECIFICATIONS GUIDELINES AND OPERATIONAL INFORMATION CONTAINED IN THE APPLICABLE OPERATOR MANUAL 6 COMPREHENSIVE OPERATIONAL INSTRUCTIONS FOR THE CORRECT AND PROPER USE OF THE SURFACE GRINDER AS PER THE CONTENTS OF THE APPLICABLE OPERATOR S MANUAL SAFETY AND OPERATIONAL INFORMATION VIDEO TAPE AND APPLICABLE MATERIAL INCLUDED IN THE NATIONAL ELECTRIC CODE 2 2 Operator 2111 Owner Instructor _ Date FAN Operator 211 Owner Instructor _ Date Operator 21111 Qwner Instructor _ Date U Operator 211 Owner Instructo
8. ASSEMBLY INSTRUCTIONS OPERATIONS utilized for the final finishing sequence Generally speaking the more aggressive the flail configurations the more coarse the resulting finish and texture Many flail configurations are available to meet a wide variety of job applications and surface material specifications To give additional perspective to each configuration a rating system of 1 to 10 10 being highest has been devised FIGURE 6 Star Flail The star flail is manufactured from high carbon steel that is through hardened for additional service life It is highly effective for light cleaning or scarifying and delivers a finer surface finish texture FIGURE 7 Suggested Applications 1 Removal of thin coatings and encrusted accumulations 2 Cleaning concrete and asphaltic surfaces 3 Removing thick material build ups of greases paints oils vegetable powders and some resins from floors 4 Light scarifying prior to the application of coatings toppings or sealers DFG SERIES SURFACE GRINDERS FIGURE 7 COST 1 PRODUCTIVITY 3 SERVICE LIFE 1 The star flail should be replaced when the outside diameter is worn to approximately 1 5 16 inch or the inside diameter elongates to approximately 3 4 inch Beam Flail The beam type flail is manufactured from high carbon steel that is through hardened for additional service life It is highly effective for scabbling or scarifying and delivers medium to coarse su
9. Do not lubricate the caster wheels with any type of grease material Grease will attract foreign material accumulations that can accelerate bearing wear 2 The transmission gears are supported by extra capacity ball bearing units Bearings are lubricated at the time of manufacture and do not require additional servicing when placing the unit in initial service Zerk grease fittings can promote improper service schedules and an excessive amount of over lubrication Excess grease escaping from around the bearing insert seals will attract foreign material accumulations that can drastically shorten their service life OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 45 MAINTENANCE SERVICE Excessive amounts of grease in the bearing race cavity can actually increase friction and resulting heat increases that can also dramatically shorten bearing service life E B Figure 51 Lubrication Points 3 The transmission gears are lubricated at the time of assembly with approximately 24 ounces of Lubricate GR132 grease or equivalent This lubricant has an EP additive to better allow it to cling to the gears The transmission should not require additional lubrication or the lubrication to be changed until service work to the gears is performed 4 Standard greasing intervals will range from once every 8 hour work day to approximately once every work week Always maintain sufficient grease around the circumference of th
10. OPERATION AND PARTS MANUAL I MULTIQUIP Electric and Gasoline Surface Grinders Model DFG Series Revision 4 05 28 09 THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES A WARNING A CALIFORNIA Proposition 65 Warnin Engine exhaust and some of its constituents and some dust created by power sanding sawing grinding drillingand other construction activities contains chemicals known to the State of California to cause cancer birth defects and other reproductive harm Some examples of these chemicals are e Leadfrom lead based paints e Crystalline silicafrom bricks e Cementandother masonry products e Arsenicandchromium from chemically treated lumber Your risk from these exposures varies depending on how often you dothistype of work To reduce your exposure to these chemicals ALWAYS work in a well ventilated area and work with approved safety equipment such as dust masks that are specially designed to filter out microscopic particles TABLE OF CONTENTS MULTIQUIP DFG SERIES SURFACE GRINDERS Table Of COMEM 3 4 Paris Ordering Procedures 6 Notice LON Eee 7 8 Operator instructional Data SCC iii 9 ag fer AOI 10 FE 10 11 PTT 12 13 Maintenance Repair and Storage va AE 13 14 FE ai 15 Removing the SURFACE GRINDER from th
11. Any line item with an extended dealer net price of less than 5 00 d Special order items e Electrical components f Paint chemicals and lubricants g Decals and paper products Items purchased in kits 7 The sender will be notified of any material received that is not acceptable 8 Such material will be held for five working days from notification pending instructions If a reply is not received within five days the material will be returned to the sender at his expense 9 Credit on returned parts will be issued at dealer net price at time of the original purchase less a 15 restocking charge 10 In cases where an item is accepted for which the original purchase document can not be determined the price will be based on the list price that was effective twelve months prior to the RMA date 11 Credit issued will be applied to future purchases only PRICING AND REBATES Prices are subject to change without prior notice Price changes are effective on a specific date and all orders received on or after that date will be billed at the revised price Rebates for price declines and added charges for price increases will not be made for stock on hand at the time of any price change OPERATION AND PARTS MANUAL REV 3 07 13 06 Multiquip reserves the right to quote and sell direct to Government agencies and to Original Equipment Manufacturer accounts who use our products as integral parts of their ow
12. filler cap Wipe away any excess spilled fuel DANGER MANY FUELS ARE EXTREMELY FLAMMABLE DO NOT SMOKE NEAR THE FUEL TANK DO NOT FILL THE FUEL TANK WITH THE ENGINE RUNNING OR IF IT IS HOT ALLOW AMPLE TIME BETWEEN EACH REFUELING FOR THE ENGINE TO COOL Operation THEORY OF OPERATION Application Models The DFG Series SURFACE GRINDERS operate the principle of various multi accessory attachments being utilized at rotational speeds to make direct contact with a work surface Various types of multi accessory attachments are secured to recesses provided in two counter rotating aluminum discs located on the bottom of the machine The specific type of multi accessory attachment utilized during the grinding process directly affects the type of material removed the material removal rate and the resulting flatness and smoothness of the surface The grinding process is directly controlled by these conditions 1 The use of a suitable mechanism multi accessory attachment of proper design and configuration to grind the work surface and remove material while delivering acceptable service life 2 Sufficient static weight supporting the multi accessory attachment to allow it to effectively penetrate the work surface and remove material 3 Adequate horsepower capable of propelling the multi accessory attachment against the work surface to deliver acceptable productivity rates Since no two materials are exactly al
13. remove the snap ring from the clutch assembly FIGURE 45 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 42 MAINTENANCE SERVICE w FIGURE 44 DANGER WEAR SAFETY EYEWEAR AND OTHER APPROPRIATE APPAREL WHEN DISASSEMBLING THE CENTRIFUGAL CLUTCH ASSEMBLY CAUTION ALL ONLOOKERS REGARDING THE POTENTIAL FOR FLYING DEBRIS FAILURE TO EXERCISE PROPER SAFETY PRECAUTIONS CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY FIGURE 45 b Disassemble the rotor shoe assembly and drum pulley assemblies Clean each component with an appropriate safety solvent Pay special attention to the inside diameter bore of the drum pulley assembly bearing Inspect for signs of excessive wear and damage which can allow the rapid formation of foreign gt material accumulation FIGURE 46 DFG SERIES SURFACE GRINDERS FIGURE 46 CAUTION Observe all applicable safety precautions for the solvent The clutch rotor springs and shoes are relatively maintenance free and should deliver many hours of trouble free operation before compete replacement is required Severely discolored springs and shoes are signs of excessive clutch slippage caused by improper operation techniques FIGURE 47 FIGURE 47 10 Reassemble the components in reverse order and install the clutch assembly on the engine crankshaft with the pulley facing towards the engine 11 Reinstall the V belts to
14. surface materials on interior surfaces It is highly recommended that both the interior and exterior surfaces be properly cleaned after the completion of each usage CAUTION Failure to properly clean the interior surfaces of the SURFACE GRINDER can result in dried material build up and accumulation directly affecting bearing service life DANGER EXERCISE EXTREME CAUTION WHEN UTILIZING ANY SOLVENT TO REMOVE ACCUMULATED MATERIALS FROM THE SURFACES OF THE MACHINE AND RELATED COMPONENTS MANY SOLVENTS ARE FLAMMABLE DO NOT SMOKE OR INTRODUCE FLAME IN THE WORK AREA PROVIDE ADEQUATE VENTILATION AND WEAR PROPER SAFETY APPAREL OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 35 ASSEMBLY INSTRUCTIONS OPERATIONS DANGER PROPERLY DISPOSE OF ALL ACCUMULATED MATERIALS PER OSHA AND ENVIRONMENTAL PROTECTION AGENCY CODES AND REGULATIONS MANY ACCUMULATED MATERIALS CAN CLASSIFIED AS HAZARDOUS AND REQUIRE PROPER DISPOSAL PROCEDURES CONTACT APPLICABLE GOVERNMENT AND OR PRIVATE AGENCIES FOR SPECIFIC INFORMATION 8 On job applications where the work process creates a considerable amount of loose material it can become almost impossible to determine proper material removal depths and the extent of work already accomplished The problem can be compounded if a vacuum system is not utilized Loose material should be removed by sweeping or other appropriate processes and the SURFACE GRINDER utilized until condi
15. CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY BECAUSE OF THE UNIQUE OPERATING CHARACTERISTICS OF THE SURFACE GRINDER THERE IS NO PROVISION FOR THE ELECTRIC MOTOR ENGINE TO AUTOMATICALLY STOP IF THE OPERATOR FAILS TO MAINTAIN PROPER CONTROL DANGER WHEN OPERATING THE SURFACE GRINDER ON ABOVE GROUND FLOOR LEVELS EXERCISE EXTREME CAUTION TO PREVENT LOSS OF CONTROL THAT COULD ALLOW THE MACHINE AND OR OPERATOR TO FALL DOWN TO LOWER LEVELS SUCH AN OCCURRENCE CAN OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 33 ASSEMBLY INSTRUCTIONS OPERATIONS RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 2 Productivity rates with the various multi accessory attachments can be increased with the addition of external weight being applied to the area over the counter rotating discs FIGURE 36 Maximum allowable external weight is 300 lbs Exceeding this figure can result in permanent structural damage to the SURFACE GRINDER Provisions for securing the weight by the means of strapping or other appropriate methods is provided FIGURE 36 DANGER DO NOT OPERATE THE SURFACE GRINDER WITHOUT ALL EXTERNAL WEIGHT PROPERLY SECURED TO THE MAIN FRAME A SUDDEN CHANGE IN MOVEMENT OR DIRECTION CAN ALLOW THE UNSECURED WEIGHT TO FALL OFF THE SURFACE GRINDER RESULTING IN LOSS OF MACHINE CONTROL PROPERTY DAMAGE AND OR PERSONAL INJURY THIS PROCEDURE 15 ESPECIALLY IMPORTANT WHEN OPERATING THE SURFACE GRINDER ON FLOORS AND
16. Examples include battery cables shirr and certain washers and nuts Not Sold Separately Indicates that an item cann be purchased as a separate item and is either part of assembly kit that can be purchased or is not availak PAGE 52 OPERATION AND PARTS MANUAL REV 4 05 28 09 SUGGESTED SPARE PARTS DFG SURFACE GRINDEH 1 TO 3 UNITS Gasoline Engine Model Qty PIN Description jM 29018 037 CABLE THROTTLE 29018 038 KNOB THROTTLE CONTROL 29018 022 CLUTCH PULLEY ASSEMBLY EN 29018 014 V BELT TRANSMISSION Seneki 172112 5 01 ELEMENT SET AIR CLEANER 9807955846 SPARK PLUG 176202 7000 CAP FUEL TANK J 284627 7003 ROPE RECOIL DFG SURFACE GRINDER 1 TO 3 UNITS Electric Motor Model Qty P N Description Tied z 29018 037 CABLE THROTTLE j EET RAN SFHUB1222 SWITCH 2 HP 60 HZ Vatne SFSG24 E3HP0450 SWITCH 3 HP 60 HZ SFSG24 E3HP0460 SWITCH 3 HP 60 HZ D nt 29018 014 V BELT TRANSMISSION DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 53 OPERATOR HANDLE ASSY ELECTRIC OPERATOR HANDLE ASSY ELECTRIC DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 54 OPERATOR HANDLE ASSY ELECTRIC OPERATOR HANDLE ASSY ELECTRIC 2 CON BWP PAR
17. HAND WHEN CALLING UNITED STATES Multiquip Corporate Office MQ Parts Department 18910 Wilmington Ave Tel 800 421 1244 800 427 1244 Fax 800 672 7877 Carson CA 90746 Fax 800 537 3927 310 537 3700 Fax 310 637 3284 Contact mq multiquip com Mayco Parts Warranty Department 800 306 2926 Fax 800 672 7877 800 421 1244 Ext 279 Fax 810 537 1173 310 537 3700 Fax 310 637 3284 310 537 3700 Ext 279 Service Department Technical Assistance 800 421 1244 Fax 310 537 4259 800 478 1244 Fax 310 631 5032 310 537 3700 MEXICO UNITED KINGDOM MQ Cipsa Multiquip UK Limited Head Office Carr Fed Mexico Puebla KM 126 5 Tel 52 222 225 9900 Hanover Mill Fitzroy Street Tel 0161 339 2223 Momoxpan Cholula Puebla 72760 Mexico Fax 52 222 285 0420 Ashton under Lyne Fax 0161 339 3226 Contact pmastretta cipsa com mx Lancashire OL7 OTL Contact sales multiquip co uk CANADA Multiquip 4110 Industriel Boul Tel 450 625 2244 Laval Quebec Canada H7L 6V3 Tel 877 963 4411 Contact jmartin multiquip com Fax 450 625 8664 COPYRIGHT 2009 MULTIQUIP INC Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc and may not be used reproduced or altered without written permission All other trademarks are the property of their respective owners and used with permission This manual MUST accompany the equipment at all times This manual is considered a permanent part of the equipment and should remain with the unit if reso
18. OF CODE IN REMARKS COLUMN The following section explains the different symbols and remarks used in the Parts section of this manual Use the help numbers found on the back page of the manual if there are any questions The contents and numbers listed in the parts section are subject to change without notice Multiquip does not guarantee the availability of the parts listed SAMPLE PARTS LIST NO PARTNAME QTY REMARKS 1 12345 1 INCLUDES ITEMS W 96 2 WASHER 1 4 IN NOT SOLD SEPARATELY 2 12347 WASHER 3 8 IN 1 MQ 45T ONLY 2 32948 AJR MAKE LOCALLY 4 12349 BEARING 1 S N 2345B AND ABOVE NO Column Unique Symbols All items with same unique symbol or gt in the number column belong to the same assembly or kit which is indicated by a note in the Remarks column Duplicate Item Numbers Duplicate numbers indicate multiple part numbers which are in effect for the same general item such as different size saw blade guards in use or a part that has been updated on newer versions of the same machine NOTICE When ordering a part that has more than one item number listed check the remarks column for help in determining the proper part to order PART NO Column Numbers Used Part numbers can be indicated by a number a blank entry or TBD TBD To Be Determined is generally used to s
19. SQUARE 3 16 X 3 16 X 2 1 5 29018 030 RELIEF STRAIN 1 6 06500 008 SCREW CAP 5 16 18 UNC X 1 PLATED 6 7 07030 005 WASHER FLAT 5 16 PLATED 6 8 07029 005 WASHER LOCK 5 16 PLATED 6 9 07033 005 NUT HEXAGON 5 16 18 UNC PLATED 6 10 29018 026 SCREW 3 8 16 UNC X 3 1 2 FULL THD PLT 2 11 07898 005 SCREW SET CUP POINT 5 196 18 UNC X 5 16 1 12 29018 031 NUT BULKHEAD INCLUDED W REF 6 2 13 07030 006 WASHER FLAT 3 8 PLATED 6 14 07029 006 WASHER LOCK 3 8 PLATED 4 15 07033 006 NUT HEXAGON 3 8 16 UNC PLATED 6 16 29018 032 SWITCH TOGGLE 115 230 VAC SELECTION 1 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 59 GASOLINE ENGINE ASSY GASOLINE ENGINE ASSY DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 60 GASOLINE ENGINE ASSY GASOLINE ENGINE ASSY NO PART 1 GX340 2 29018 021 3 29018 022 4 29018 023 5 29018 024 6 29018 025 7 07898 005 8 07030 007 9 07029 007 10 06502 012 11 06500 014 12 07030 005 13 07029 005 14 07033 005 15 06510 008 16 07033 006 17 07030 006 18 29018 026 19 07029 006 20 SFSG240317 PART NAME ENGINE HONDA 11 H P MOUNT GASOLINE ENGINE CLUTCH PULLEY ASSY ADAPTER M20 X 7 8 14 UNF CAP OIL DRAIN KEY SQUARE 4 X X 2 1 2 SCREW SET CUP POINT 5 196 18 UNC X 5 16 WASHER FLAT 7 16 PLATED WASHER LOCK 7 16 PLATED SCREW CAP 7 16 14 UNG X 1 1 2 PLATED
20. a gives on the job protection from electrical shock hazards caused by ground faults in commercial industrial residential applications They are simple and easy to use plug a portable GFCI into any suitable grounded extension cord and plug the SURFACE GRINDER into the GFCI for automatic protection against ground faults For specific information consult current National Electrical Code publications and OSHA publications 210 22D or current revision for construction sites and 555 3 or current revision for use around any area containing water Never exceed the recommended capacities of the SURFACE GRINDER Refer to the Specifications sections of this manual for more detailed information OPERATION 1 Give complete and undivided attention to the job at hand Do not chew gum smoke and or use smokeless tobacco while utilizing the SURFACE GRINDER Do not attempt to eat and or drink while utilizing the SURFACE GRINDER Determine that eyeglasses and or hearing aid devices are properly secured Use of the SURFACE GRINDER is strenuous and causes fatigue Help prevent the cause of an accident Plan to take work breaks as required to help maintain proper mental and physical alertness DFG SERIES SURFACE GRINDERS 2 OPERATION AND PARTS MANUAL REV 4 05 28 09 This SURFACE GRINDER is not sealed or insulated Do not operate SURFACE GRINDER in an explosive atmosphere or near combustible materials Refer to
21. ambient temperatures This problem can be significantly reduced with the addition of various amounts of water or a water saturated fine sand combination placed on the floor The use of the Safety and Dust Shield Assembly with the SURFACE GRINDER is highly recommended to contain the water sand slurry mixture from damaging surrounding walls and other vertical surfaces FIGURE 19 DFG SERIES SURFACE GRINDERS FIGURE 18 FIGURE 19 To index the tungsten carbide insert proceed as follows Tools required 1 each 5 32 Allen wrench 1 Clean the SCRAPE R TACH unit with a suitable safety solvent to remove excess material build up Remove as much foreign material from the female hexagon socket area of the capscrew This will allow the wrench to make full contact and maximize the torque transfer to the cap screw OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 24 ASSEMBLY INSTRUCTIONS OPERATIONS CAUTION Follow all safety precautions for the safety solvent 2 Remove the cap screw from the unit Clean the newly exposed areas of the insert and SCRAPE R TACH unit with the safety solvent Clean and inspect the threaded holes found in older units for excess wear New style SCRAPE R TACH units feature a through hole design 3 Index the insert to expose a new edge Reinstall the capscrew and apply a torque value that properly seats the insert firmly against the body of the unit CAUTION An insufficient s
22. and corresponding voltage and amperage drop Thermal protection device activated To protect the motor against heat related damage an automatic thermal protection switch is provided near the voltage selection switch High operating temperatures will activate the switch and shut the motor off After the motor has cooled to an acceptable temperature level depress the switch to restart ELECTRIC MOTOR LOSES POWER Improper extension cord size and capacity Replace with cords meeting the required specifications Excessive extension cord length Even with proper extension cord size and capacity excessive cord length can reduce the available voltage and amperage to the motor Measure the available voltage to the motor where the extension cord connects to the SURFACE GRINDER with a voltmeter Reduce the extension cored length as required to achieve the minimum voltage operating specification as required by the motor manufacturer Insufficient available voltage and amperage at the power source Measure the available voltage at the power source usually a receptacle with a voltmeter If the available voltage is below the minimum operating specification as required by the motor manufacturer utilize an alternative power source DFG SERIES SURFACE GRINDERS Improper motor cooling See ELECTRIC MOTOR SERVICE Excessive load to the motor See OPERATING THE SURFACE GRINDER ON THE JOBSITE ENGINE Application DFG G Series GRINDERS ENG
23. are decreased vibration less operator fatigue and increased component service life ES A N N F 54 N y A gt N Tar K 4 2 4 qa FIURE 38 b Higher material removal rates can sometimes be achieved bv making a series of shallow passes 90 degrees to each other to form a waffle like pattern This technique is especiallv useful when removing deeper accumulations of rubber paint dirt debris etc from industrial floors OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 34 ASSEMBLY INSTRUCTIONS OPERATIONS 5 The grinding process on many work surface materials can produce sparks dust and other foreign particle contamination DANGER SPARKS PRODUCED BY THE ACTIONS OF MULTI ACCESSORY OPTIONS AGAINST THE WORK SURFACE FOR EXAMPLE STRIKING ANCHOR BOLTS MAY COME IN CONTACT WITH MATERIALS THAT CAN RESULT IN A FIRE AND OR EXPLOSION THIS OCCURRENCE CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY DANGER THE CREATION OF DUST AND OTHER FOREIGN PARTICLE CONTAMINATION FROM THE OPERATIONAL PROCESS CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY FOR SUCH OPERATING CONDITIONS ALWAYS WEAR A NIOSH MSHA APPROVED DUST MIST RESPIRATOR CONSULT APPLICABLE OSHA REGULATIONS FOR SPECIFIC INFORMATION 6 Dust and other particle contamination can be controlled by the following methods a The SURFACE GRINDER is equipped with a 1 1 2 2 or 3 inch ou
24. current OSHA rules and regulations Gasoline is an extremely flammable fuel Use extreme caution when handling gasoline or mixing fuel Always utilize UL CSA OR CE approved containers for the storage and transportation of fuel Do not smoke or bring fire or flame near the fuel Always shut off the engine and allow it to cool before refueling Never remove the fuel tank filler cap while the engine is running Never operate an engine without a fuel tank filler cap Select bare ground for fueling and move at least 10 feet from the fueling spot before starting the engine Wipe off any spilled fuel before starting the engine and check for leakage If a fuel or oil leak is found do not start or run the engine until the leak is fixed and the spillage has been wiped away Take care not to get fuel or oil on your clothing If this happens change your clothing immediately Before operating the SURFACE GRINDER refer to the Specifications section of this manual for more detailed information regarding fuel and lubrication requirements The SURFACE GRINDER is designed for use by one operator Use of the SURFACE GRINDER by more than one operator can lead to confusion and loss of control resulting in property damage and or personal injury If it is felt that more than one person is required to operate the SURFACE GRINDER STOP and contact the Customer Service Department for specific operational and service maintenance information There is no
25. disc when direct contact with a foreign object is made 6 Determine that the multi accessory attachment is in full contact with the aluminum disc If not in proper contact refer to REMOVING A MULTI ACCESSORY ATTACHMENT not including multi segmented dry diamond blades FROM THE COUNTERROTATING DISCS for proper removal procedures 7 Return the SURFACE GRINDER to its normal operating position 8 If the SURFACE GRINDER is powered by an engine reconnect the engine spark plug wire If powered by an electric motor and the machine is to be used immediately reconnect the extension cord or SURFACE GRINDER to the power source Determine that the ON OFF switch located on the operator handle is in the OFF position DANGER DFG SERIES SURFACE GRINDERS UNEXPECTED MACHINE START UP CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY REMOVING A MULTI ACCESSORY ATTACHMENT not including multi segmented dry diamond discs FROM THE COUNTERROTATING DISCS Application Models Tools Required 1 each Small Hammer 1 each Drift Punch or small Pry Bar DANGER WHEN REMOVING A MULTI ACCESSORY ATTACHMENT FROM THE SURFACE GRINDER ALWAYS WEAR APPROPRIATE SAFETY EYEWEAR AND APPAREL TO MINIMIZE THE POTENTIAL FROM FLYING DEBRIS FLYING DEBRIS CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 1 If the SURFACE GRINDER is powered by an engine disconnect the spark plug wire If powered by an electric motor disconnect
26. floors DFG SERIES SURFACE GRINDERS 2 The TR 34 system for defined traffic floors Both methods are not of equal value For random traffic floors F numbers provide the most complete and consistent system For defined traffic floors the TR34 system is superior The F number system utilizes a pair of numbers to define surface regularity The flatness number Ff is based upon the curvature over a horizontal distance of 24 inches The levelness number Fl is based upon the floor slope over a horizontal distance of 10 feet The standard test for F numbers is specified in ASTM E1155 and or most recent version With both Ff and Fl higher numbers mean greater surface regularity Though the scale ranges from zero to infinity almost all floors have F numbers between 10 and 100 for both flatness and levelness Since the scale is linear an Ff50 floor is exactly twice as flat as an Ff25 floor Most F number specifications are written in a two tier format The overall F numbers apply to the floor taken as a whole The local F numbers apply to each individual slab and are usually only one half to two thirds the overall values The overall F numbers are not just simple averages ASTM E1155 covers how to combine F numbers he two tier format encourages contractors to achieve good surface regularity while allowing for minor defects The attempt is to pour the entire floor to the specified overall F numbers If for instance the constructi
27. for this procedure as outline in INSTALLING A MULTI ACCESSORY ATTACHMENT not including multi segmented dry diamond blades IN THE COUNTERROTATING DISCS 5 Utilizing the Allen wrench remove the affected aluminum multi accessory disc if still attached from the SURFACE GRINDER 6 Utilizing the 9 16 inch wrenches remove the screws that retain Lord rubber mounts to both the mounting plate and transmission shaft FIGURE 48 7 Inspect the appropriate cavities in the mounting plate for wear and damage Any nick or burr must be removed by the use of an appropriate file followed by the use of 240 grit sandpaper FIGURE 49 OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 44 MAINTENANCE SERVICE FIGURE 49 8 Apply the installation lubricant to the exterior surface of the elastomeric mount to minimize damage when pressing into the mounting disc the factory supplied lubricant is not available an acceptable alternative is the use of common liquid soap CAUTION Do not install an elastomeric mount without the use of an approved lubricant Installation without an approved lubricant can produce tears in the mount resulting in substandard operational performance and service life 9 Support the elastomeric mount socket and mounting plate as depicted in FIGURE 50 The mounting plate must be suspended from the arbor press to allow the mount to clear when the pressing process is completed A s
28. messages in this manual When you see these symbols be alert to the possibility of personal injury and carefully read the message that follows Do not allow anyone to operate the SURFACE GRINDER without first reading this Operator Manual and becoming familiar with its operation The manufacturer of the SURFACE GRINDER has gone to great extremes to provide the owner s and or operator s with the finest equipment available for its intended job function of removing covering materials from concrete and wood floor surfaces Yet the possibility exists that the SURFACE GRINDER can be utilized in and or subjected to job applications not perceived and or anticipated by the manufacturer Such misuse and or misapplication of the SURFACE GRINDER can lead to the possibility of serious damage injury or even death It is the responsibility of the owner s and or operator s to determine that the SURFACE GRINDER is being utilized and or operated within the scope of its intended job function It is the responsibility of the owner s and or operator s to establish monitor and constantly upgrade all safety programs and or practices utilized in and for the operation of the SURFACE GRINDER The purpose of such programs is to provide for owner s and or operator s safety Operators must be instructed to recognize and avoid unsafe conditions associated with their work 29 CFR 1926 21 b 2 and or applicable updated revisions It is the responsibility of the owner s and
29. removal efficiencies 2 To provide a method for a vacuum system to help remove airborne dust related materials from within the skirt assembly Dust related materials are usually created as a result of the grinding process A specific job application may require the reduction and or minimization of airborne dust related materials from the atmosphere while the SURFACE GRINDER is being operated The kit includes a hose and necessary hardware to connect the skirt assembly to the 3 inch diameter vacuum attachment fitting located at the rear of the machine Use of the kit along with a suitable vacuum system will not completely remove all airborne and loose materials directly from the work surface DANGER THE USE OF THE SG24 1000 SAFETY AND DUST SHIELD ASSEMBLY KIT ALONG WITH A SUITABLE VACUUM SYSTEM TO REMOVE HAZARDOUS CLASSIFIED AIRBORNE MATERIALS FROM THE WORK SURFACE WILL NOT ELIMINATE THE REQUIREMENT FOR PROPER SAFETY RELATED EQUIPMENT OPERATING PLAN AND OR PROCEDURES DANGER USE OF THE SG24 1000 SAFETY AND DUST SHIELD ASSEMBLY KIT ALONG WITH A SUITABLE VACUUM SYSTEM WILL COMPLETELY REMOVE ALL LOOSE MATERIALS FROM THE WORK SURFACE HAZARDOUS CLASSIFIED LOOSE MATERIALS MUST BE REMOVED FROM THE WORK SURFACE BY PROCESSES AND OR PROCEDURES MEETING THE APPLICABLE OSHA AND OR EPA REQUIREMENTS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 15 ASSEMBLY INSTRUCTIONS OPERATIONS INSTALLING THE SG24 1000 SAFE
30. such work performed at your dealer s service facility A worn or damaged engine muffler is a fire hazard and may cause loss of hearing Check to see that the muffler is in good condition If the muffler is equipped with a spark arresting device determine that it is in proper working condition at regular service intervals Replace the spark arresting device with an approved replacement if there is any question of it integrity It is the responsibility of the owner s and or operator s to provide for and properly maintain a USDA approved spark arresting muffler in an operating area specified by law Check with appropriate governing agencies for more specific information The SURFACE GRINDER must not be operated if the muffler is faulty or has been removed Contact with a hot engine muffler can cause property damage and or personal injury Do not operate the SURFACE GRINDER without the use of factory approved V belt and diamond blade guards that are maintained in proper structural condition Frequently inspect the guards for signs of wear cracks and other signs of fatigue If there is any question regarding the structural integrity and or condition PAGE 13 SAFETY PRECAUTIONS DFG SERIES SURFACE GRINDERS of the belt guard properly dispose and replace with a genuine factory approved replacement part only Maintain all safety and operation decals in proper condition If any decal becomes damaged and or unreadable replac
31. the extension cord or SURFACE GRINDER from the power source 2 Tilt the SURFACE GRINDER back until the operator handle comes in contact with the surface Follow the instructions for this procedure as outlined in INSTALLING A MULTI ACCESSORY ATTACHMENT not including multi segmented dry diamond blades IN THE COUNTERROTATING DISCS 3 The multi accessory attachment can be removed by both the use of a drift punch or small pry bar If utilizing the drift punch strike the narrow end of the mounting wedge with controlled direct blows until the attachment is released from the aluminum disc If utilizing the pry bar position the bar between the aluminum disc and the attachment Use controlled direct blows to the bar in order to force the attachment loose from the aluminum disc FIGURE 28 OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 28 ASSEMBLY INSTRUCTIONS OPERATIONS FIGURE 28 CAUTION Do not utilize excessive force when removing a multi accessorv attachment with the pry bar Excessive force can result in damage to the aluminum disc Proper removal techniques by both methods will result in minimal damage to the aluminum disc 4 Return the SURFACE GRINDER to its normal operating position 5 If the SURFACE GRINDER is powered by an engine reconnect the spark plug wire If powered by an electric motor and the machine is to be used immediately reconnect the extension cord or SURFACE GRINDER from the power
32. wa lt lt LLI e DFG SERIES SURFACE GRINDERS TRANSMISSION ASSY TRANSMISSION ASSY TRANSMISSION ASSY NO PART NO 1 29018 001 2 29018 002 3 29018 003 4 07029 006 9 07033 006 06500 006 7 07029 005 8 29018 004 9 29018 005 10 29018 006 11 10059 019 12 29018 007 13 07030 012 14 07038 012 15 29018 008 16 29018 009 17 29018 010 18 29018 011 19 29018 012 20 29018 013 21 09499 006 22 10057 011 23 29018 014 24 29018 015 25 29018 016 26 29018 017 27 29018 018 28 29018 019 29 29018 020 34 SFSG240330 35 SF 15043200 36 5 80590 37 SFSG120120 38 07033 004 39 07029 004 40 SFSG120130 41 SFSG240410 PART NAME FRAME MAIN COVER TRANSMISSION BEARING FLANGE WASHER LOCK 3 8 PLATED NUT HEXAGON 3 8 16 UNC PLATED SCREW CAP 5 16 18 UNC X 3 4 PLATED GDE WASHER LOCK 5 16 PLATED SHAFT RING SNAP SPACER LONG KEY SQUARE 4 X X 1 7 8 GEAR WASHER FLAT 34 PLATED NUT HEXAGON JAM NYLOC 34 16 UNF SHAFT SPACER MEDIUM GEAR DRIVE PIN SPIRAL ROLL 14 X 1 3 4 PULLEY DRIVEN BUSHING TAPERED SCREW 4 20 UNC X 34 PLATED GRADE 5 KEY SQUARE 4 X X 1 1 4 V BELT B 50 COVER B 50 BUMPER RUBBER SCREW CAP COUNTERSUNK 14 20 UNC X 5 8 FASTENER COVER PLUG HOLE SPACER SHORT MANIFOLD BLOGK ia oet trades SCREW CAP 4 20 UNG X 4 PLATED GRADE 5 GREASE FITTING STRAIGHT 1 8
33. 0 to 75 hours Tungsten Carbide Grinding Block This multi accessory attachment is most often utilized on larger concrete grinding projects where increased production and service life are required The block utilizes tungsten gt carbide balls approximately 1 16 inch diameter that are deposited in a molten matrix material during the manufacturing process at a controlled rate The end effect is a multi layer deposit of tungsten carbide balls in the matrix material As the softer matrix material wears with use it exposes a new layer of fresh tungsten carbide balls to continue the grinding process The tungsten carbide grinding block is considerably more aggressive than the C10 silicon carbide grinding stone With the ability to renew itself during usage the normal life expectancy for this accessory can approach several hundred hours The nominal dimensions for the tungsten carbide grinding block is 2 x 2 x 4 and is secured to the machine with a plastic wedge FIGURE 5 DFG SERIES SURFACE GRINDERS FIGURE 5 Scarifier Blocks These multi accessory attachments are comprised of flails and spacer washers secured in a rigid steel case FIGURE 6 Rotation of the two multi accessory discs causes the flails to impact against the work surface with a variety of results Scarifier blocks are secured to the machine with plastic wedges Several factors directly affect the selection of a flail design for a specific job application a The ty
34. 4 05 28 09 PAGE 49 SPECIFICATIONS Specifications STRUCTURE vanene Unitized Welded Steel Plate DRIVE REDUCTION SYSTEM B50 Series Belt Pulley Spur Gear transmission MAXIMUM GRINDING WIDTH 24 inches 610 mm OVERALL MACHINE WIDTH 27 1 2 inches 699 mm OVERALL MACHINE LENGTH 3 inches 1346 mm TYPICAL OPERATOR HANDLE HEIGHT 40 inches 1 066 mm VACUUM CLEANER CONNECTION DIAMETER 1 1 2 inch 51 mm 2 inch 51 mm or 3 inch 76 mm GENERAL BASIC WEIGHT use 250 Ibs 114 kg DEG IG BASIC WEIGHT 300 Ibs 136 kg DFG E ELECTRIC MOTOR 2 hp 3450 RPM 16 8 amperes 115 VAC 60 Hz or 8 4 amperes 9 230 60 Hz switchable when the motor is not in operation The electric motor requires a clean no other electric products on the same circuit 20 ampere capacity circuit to properly function on 115 VAC 60 Hz or 10 ampere capacity circuit to properly function on 230 VAC 60 Hz Honda GX340 engine 11 hp 82 kw nominal industrial quality 4 cycle engine 3450 RPM nominal maximum governed speed DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 50 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 51 DFG SERIES SURFACE GRINDERS EXPLANATION
35. AL CONFIGURATIONS DEPENDING ON JOB REQUIREMENTS DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 70 SCARIFIER ASSY SCARIFIER ASSY NO PART PART NAME QTY 1 SFSG241900012 HOUSING 1 2 29018 083 BUSHING 2 3 SF87052000 BOLT CARRIAGE 3 8 16 UNC X 2 1 2 UNC PLATED 2 4 29019 013 WASHER PEAT 516 HEAT TREATED 12 5 29019 010 FAIL STAR HEAT TREATED STEEL 12 5 29019 011 FAIL BEAM HEAT TREATED STEEL 12 5 29019 012 FAIL PENTAGONAL HEAT TREATED STEEL 12 6 08233 006 NUT HEX 3 8 UNC NYLOCK PLATED 2 7 29019 017 WEDGE PLASTIC 1 REMARKS SEE NOTE 1 SEE NOTE 2 SEE NOTE 2 SEE NOTE 2 PAGE 71 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 SCRAPE R TACH ASSY SCRAPE R TACH ASSY DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 72 ONO O SCRAPE R TACH ASSY PART NO 29018 082 29018 084 29018 085 29018 086 29019 019 29018 087 06500 020 08233 005 29019 017 07033 004 07029 004 DFG SERIES SURFACE GRINDERS SCRAPE R TACH ASSY PART NAME HOUSING HOLDER INSERT MOUNT RUBBER SPACER INSERT TUNGSTEN CARBIDE SCREW C S 1 4 UNG X 1 1 4 BOLT CARRIAGE 5 16 X 2 1 2 PLATED 5 NUT NYLOCK 5 16 1 8 UNG PLATED WEDGE PLASTI
36. C NUT HEX 1 4 20 PLATED WASHER LOCK1 4 PLATED OPERATION AND PARTS MANUAL REV 4 05 28 09 GRINDING ASSY GRINDING BLOCK ASSY e DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 74 GRINDING ASSY GRINDING BLOCK ASSY NO PART PART NAME TY REMARKS 1 SFG242101010 BLOCK 1 SFG242101030 O RING 3 SF83040901 PIN RETAINING STAINLESS STEEL 3 29019 017 WEDGE PLASTIC 1 SFSG242100020 PIN DIAMOND PURPLE 40 50 AGGRESS GRINDING SFSG242101020 DIAMOND YELLOW 40 50 GRIT GENERAL PURPOSE SFSG242102020 DIAMOND BLACK 40 50 GRIT EPOXY MORTAR amp ASPHALT SFSG242103020 DIAMOND GREEN 40 50 GRIT S NES CONCRETE AND ASPHALT SFSG242104020 DIAMOND RED 40 50 GRIT GRINDING AND POLISHING C1 71 C1 A W PO DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 75 DECALS DECALS 1 BEFORE OPERATING THIS MACHINE THOROUGHLY READ AND COMPREHEND THE CONTENTS OF THE APPLICABLE OPERATOR S MANUAL 2 BEFORE STARTING THE POWER SOURCE RAISE THE BLADE TO FULLY TO CLEAR THE WORK SURFACE VISUALLY INSPECT THE BLADE ARBOR SHAFT E Y E AND EAR 3 THIS MACHINE IS DESIGNED TO BE PULLED TOWARD THE OPERATOR DURING NORMAL OPERATION PROTECTION IMPROPER STARTING OPERATING PROCEDURES CAN RESULT IN PRORERT
37. EVEL FLATNESS F F F F CONVENTIONAL BULL FLOAT 13 STRAIGHTEDGE 15 FLAT 15 VERY FLAT 25 FIGURE 40 One of the major limitations of the F number system is that it does not control the surface regularity at joints Because joints are statistical anomalies the standard test method forbids measurements within 24 inches The designer specifying by F number has two methods to accommodate the problem The first solution is to locate joints at locations where surface regularity is not important The second solution is to design specifications for the joints themselves The TR 34 tolerances for defined traffic floors The 34 System divides defined traffic floors into three categories a Superflat b Category 1 C Category 2 For each category the 34 System specifies limits for three properties Property 1 is the difference in elevation between two points 12 inches apart measured in the direction of vehicle traffic This is the levelness tolerance DFG SERIES SURFACE GRINDERS Property 2 is the difference in slope over 24 inches measured in the direction of vehicle traffic This is the flatness tolerance It is identical as the 24 inch curvature utilized in the F number system Property 3 is the difference in elevation between opposite points in the left and right wheel path measured perpendicular to the direction of vehicle traffic As with Property 1 it is a levelness tolerance The T
38. ILIZING A MECHANICAL DEVICE FOR LIFTING THE SURFACE GRINDER UTILIZE THE MECHANICAL DEVICE IN ACCORDANCE TO BOTH ITS STATED STATIC AND DYNAMIC LOADING ENVELOPES DO NOT UTILIZE THE MECHANICAL DEVICE UNTIL THIS INFORMATION IS PROPERLY KNOWN AND UNDERSTOOD BY ALL APPLICABLE PERSONNEL FAILURE TO PROPERLY UTILIZE THE MECHANICAL DEVICE CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 2 When transporting the SURFACE GRINDER a motor vehicle the fuel tank breather vent if so equipped must be completely closed to eliminate the accidental seepage of fuel and resulting potential fire and environmental hazards 3 To minimize the possibility of damage to the SURFACE GRINDER always transport in its normal upright position All equipment must be secured in on vehicles with suitable strapping or tie downs Personnel should not be transported in the same compartment as equipment and fuel supplies OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 29 ASSEMBLY INSTRUCTIONS OPERATIONS Consult applicable OSHA AGA CGA etc regulations for the proper transportation flammable gases ADJUSTING THE OPERATOR HANDLE HEIGHT Application Models The DFG Series SURFACE GRINDER incorporates a handle that can be adjusted to compensate for variances in operator heights Three adjustment heights are provided Correct handle height can increase overall machine productivity and reduce operator fatigue FIGURE 29 Tools Requi
39. INE FAILS TO START Ignition switch in OFF or cut off position Place switch in the ON position or move throttle control lever to the ignition operational position SURFACE Incorrect carburetor fuel ignition system adjustment See SERVICE section Air filter Blocked See SERVICE section Ignition wire to spark plug loose or disconnected Heconnect Application DFG G Series SURFACE GRINDER Fuel supply exhausted Refill the fuel tank Spark plug fouled Replace Spark Plug Refill the fuel tank ENGINE LOSES POWER Incorrect carburetor fuel injection adjustment See SERVICE section Excessive carbon accumulation in combustion chamber See SERVICE section Excessive material build up around the cooling fins See SERVICE section Application DFG G Series SURFACE GRINDER Water in fuel supply Drain and replace fuel Fuel tank breather vent closed if so equipped Open vent Air filter Blocked See SERVICE section OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 47 TROUBLESHOOTING OPERATIONAL PROBLEMS Application Models UNEVEN MULTI ACCESSORY ATTACHMENT WEAR Incorrect installation of the attachment in the aluminum disc See INSTALLING MULTI ACCESSORY ATTACHMENT ON THE COUNTERROTATING DISCS Worn or damaged gimbal head Lord rubber mounts Replace mounts Accumulation of foreign material on the multi accessory attachment Clean and or replace the attachment components as necessary
40. L REV 4 05 28 09 PARTS ORDERING PROCEDURES Ordering parts has never been easier Order via Internet Dealers Only Order parts on line using Multiquip s SmartEquip website View Parts Diagrams Order Parts ll Print Specification Information Goto www multiquip com and click on Parts 0100 in and save p com Order Fax Dealers Only All customers are welcome to order parts via Fax Domestic US Customers dial 1 800 6 PARTS 7 800 672 7877 7j Order via Phone ka Ug Choose from three easy options Effective January 15 2006 If you have an MQ Account to obtain a Username and Password E mail us at parts 9 multiquip com To obtain an MQ Account contact your District Sales Manager for more information 1 Use the internet and quality for a 5 Discount on Standard orders for all orders which include complete part numbers L 1 Fax your order in and qualify for a 2 Discount on Standard orders for all orders which include complete part numbers L Note Discounts Are Subject To Change Domestic US Dealers Call 1 800 427 1244 PRE ERR 1 fa A 1 Non Dealer Customers Contact your local Multiquip Dealer for dis 2 2 parts or call 800 427 1244 for help in their local Multiquip Representatives for locating a dealer near you Parts Ordering information 122 4 EEE 21111111 Dealer Account Number Dealer Na
41. MANUAL REV 4 05 28 09 PAGE 55 OPERATOR HANDLE ASSY GASOLINE OPERATOR HANDLE ASSY GASOLINE DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 56 NO PART NO 1 CO CON W 29018 033 29018 034 29018 035 06503 012 07033 008 29018 036 07030 008 07029 008 29018 037 29018 038 DFG SERIES SURFACE GRINDERS OPERATOR HANDLE ASSY GASOLINE OPERATOR HANDLE ASSY GASOLINE PART NAME QTY HANDLE OPERATOR UNIVERSAL LEVER THROTTLE CONTROL W CABLE amp KNOB SCREW SOCKET 10 32 UNF X 5 8 PLATED SCREW CAP 72 13 UNC X 1 1 2 PLATED GRADE 5 NUT HEXAGON 12 13 UNC PLATED NUT HEXAGON NYLOC 10 32 UNF PLATED WASHER FLAT 7 PLATED WASHER LOCK 12 PLATED CABLE THROTTLE KNOB THROTTLE CONTROL OPERATION AND PARTS MANUAL REV 4 05 28 09 1 1 2 2 2 2 4 4 1 1 REMARKS PAGE 57 ELECTRIC MOTOR ASSY ELECTRIC MOTOR ASSY DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 58 ELECTRIC MOTOR ASSY ELECTRIC MOTOR ASSY NO PART PART NAME QTY REMARKS 1 29018 027 MOUNT ELECTRIC MOTOR 1 2 29018 028 MOTOR ELECTRIC 2 HP 115 230 VAC 60 HZ ene P145K34FB18A 2 SF12136000 MOTOR ELECTRIC 3 HP 230 VAC 50 60 HZ 1 3 SFSG240500 PULLEY DRIVE i bo 2 AND 3 HP 60 HZ MOTORS 3 SESG240510 PULLEY DRIVE uuu luan asa EE 3 HP 50 HZ MOTOR 4 10057 008 KEY
42. NINGS LARGE CRACKS UTILITY OUTLETS OR ANY OBJECT PROTRUDING FROM THE SURFACE CONTACT WITH SUCH OBJECTS CAN LEAD TO LOSS OF MACHINE CONTROL RESULTING IN PROPERTY DAMAGE AND OR PERSONAL INJURY DFG SERIES SURFACE GRINDERS DANGER DO NOT OPERATE A GASOLINE ENGINE IN CLOSED SPACES WITHOUT PROPER VENTILATION GASOLINE ENGINES PRODUCE CARBON MONOXIDE FUMES BREATHING CARBON MONOXIDE FUMES CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY EXCESSIVE LEVELS OF CARBON MONOXIDE CAN CAUSE DEATH 1 The SURFACE GRINDER incorporates counter rotating discs for mounting a wide variety of multi accessory attachments The counterrotating action results in self propelled effect that substantially enhances machine control and reduces fatigue as long as the multi accessory attachment does not come in direct contact with a protruding obstruction from the floor Direct contact with such an obstruction can result in rapid and jerky directional movement of the machine In most operating situations direct contact with a protruding obstruction from the floor will result in the multi accessory attachment becoming dislodged from the counter rotating disc This occurrence is intended to protect the SURFACE GRINDER from excessive damage and allow the operator to remain in proper control of the machine DANGER ALWAYS MAINTAIN PROPER CONTROL OF THE SURFACE GRINDER IF AN OPERATOR LOOSES CONTROL OF THE MACHINE A RUNAWAY SURFACE GRINDER
43. OR SURFACES ABOVE GROUND LEVEL 3 Proper operator posture and stance will enhance operational safety and overall productivity FIGURE 38 For most job applications operate the engine at maximum governed speed Consult the material supplied by the engine manufacturer and the SPECIFICATIONS section for specific information DFG SERIES SURFACE GRINDERS 4 The wide variety of potential work surface materials along with the corresponding variety of job site environments makes it impossible to develop a standardized operating procedure for the SURFACE GRINDER Use of the SURFACE GRINDER will require constant trial and error testing until satisfactory results are achieved Experience gained over time and common sense will help minimize the amount of necessary testing Many factors will directly affect operating parameters and or techniques utilized for a specialized job application Some of these factors include a Work surface material yield and tensile values As a general rule these values will determine material removal rate per unit of time Materials with high yield and tensile values will characteristically resist limit material penetration For such materials the accepted procedure is to make a number of multiple passes over the work surface rather than attempt to make a single deep pass he net effect is to actually increase productivity more material removed in less time Other added benefits to this technique
44. R 34 System specifies different values for Property 3 depending upon whether the distance between left and right wheel paths is more or less than 5 nominal feet The Superflat category is intended for very narrow aisle warehouses where the highest standards are required Category 1 is suggested for very narrow aisle warehouses where the vertical lift height is between 26 and 43 feet Category 2 is for very narrow aisle warehouses where the vertical lift height is under 26 feet and the use of low rise automatically controlled vehicles No matter which category of surface regularity is specified it is accomplished by measuring elevations on 12 inch centers This is very similar to an F number survey but with an important distinction In an F number survey the elevation profiles are made on the floor at random With the TR 34 System the survey measurements are made on the actual paths of the vehicles that will utilize the floor Improving the wear resistance of concrete floors by grinding with the DFG Series SURFACE GRINDER Poor wear resistance can often be traced back to a surface that is weaker than underlying levels of the pour This an occurrence can result from bad finishing techniques improper curing early freezing Where surface weakness is a problem grinding can be a solution The process is similar to the early age technique The grinding depth is typically 1 16 to 1 8 inch A large project should not be attempted until
45. S OPERATIONS appropriate weight to the handle for added stability Other means can also be utilized to support the frame and provide proper machine stability Appropriate wheel chocks are also recommended FIGURE 25 DANGER EXERCISE EXTREME CAUTION WHEN WORKING NEAR OR UNDER THE SURFACE GRINDER WITH THE OPERATOR HANDLE TILTED BACK IN THE SERVICE POSITION IF THE SURFACE GRINDER IS NOT POSITIONED IN A STABLE CONFIGURATION WITH ADEQUATE COUNTERWEIGHT PROPERLY SECURED UNEXPECTED MOVEMENT CAN ALLOW THE SURFACE GRINDER TO FALL BACK TO THE WORK SURFACE THE RESULT CAN BE PROPERTY DAMAGE AND OR PERSONAL INJURY FIGURE 25 3 Mount the multi accessory attachment into the slots provided in the multi accessory discs If the attachment is directional in design determine that its mounting position in the disc allows for proper operation 4 Force a Mounting Wedge P N 229019 017 into the area between the multi accessory attachment and the inside rib of the aluminum disc by hand The straight side of the mounting wedge contacts the multi accessory attachment The angled side of the mounting wedge contacts the rib of the disc FIGURE 26 An improper mounting configuration is depicted in FIGURE 27 DFG SERIES SURFACE GRINDERS FIGURE 26 FIGURE 27 DANGER DO NOT OPERATE THE SURFACE GRINDER WITH THE 229019 017 MOUNTING WEDGES IN AN IMPROPER MOUNTING CONFIGURATION MOUNTING A WEDGE BETWEEN THE MULTI ACCESSORY AT
46. T NO 29018 033 29018 040 29018 041 29018 042 08885 013 SFSG24 E3HP0020 SFCG5050 29018 043 29018 044 07029 004 07033 004 07029 003 07036 010 06499 004 07030 008 07029 008 08233 008 06503 012 29018 031 SFHUB1222 SFSG24 E3HP0450 SFSG24 E3HP0460 SFHUB2323 SFSG24 E3HP0010 SF53030000 SF60030500 PART NAME TV HANDLE OPERATOR UNIVERSAL HOUSING OW INCE iet CABLE LONG 58 1 CABLE SHORT 12 1 PLUG MALE 1 0 20 iii 1 PIG 1 RELIEF STRAIN 2 CLAMP CABLE 2 SCREW PAN HEAD 10 32 UNF X 7 PLATED 2 WASHER LOCK 14 PLATED 2 NUT HEXAGON 7 20 UNG PLATED 2 WASHER LOCK 10 PLATED 2 NUT HEXAGON 10 32 UNF PLATED 2 SCREW 4 20 UNG X 12 PLATED 2 WASHER FLAT 72 PLATED 4 WASHER LOCK 12 PLATED 4 NUT HEXAGON 12 13 UNC PLATED 2 SCREW 12 13 UNC X 1 1 2 PLATED GD 5 2 NUT BULKHEAD INCLUDED W REF 6 2 2 cud mn reb ed 1 1 SWIT O 1 RECEPTACLE 1 RECEP VACHE FEMALE gunnar 1 NUT HEX NYLOCK 10 24 UNG PLATED 1 SCREW SOCKET HEAD 10 24 UNG PLATED 2 REMARKS 2 HP MOTOR ONLY 2 HP MOTOR ONLY 9 HP MOTOR ONLY 2 HP MOTOR 60 HZ HP MOTOR 50 HZ HP MOTOR 60 HZ 2 HP MOTOR 60 HZ 9 HP MOTOR 50 60 HZ 9 HP MOTOR 50 60 HZ 9 HP MOTOR 50 60 HZ DFG SERIES SURFACE GRINDERS OPERATION AND PARTS
47. TACHMENT AND THE OUTSIDE RIB OF THE ALUMINUM DISC CAN ALLOW THE WEDGE TO COME IN DIRECT CONTACT WITH A VERTICAL WALL AND OR FLOOR OBSTRUCTION SUCH OCCURRENCE RESULT IN LOSS OF MACHINE CONTROL PROPERTY DAMAGE AND OR PERSONAL INJURY BEFORE OPERATING THE SURFACE GRINDER WITH ANY MULTI ACCESSORY ATTACHMENT DETERMINE THAT NO PORTION OF THE ATTACHMENT AND OR MOUNTING WEDGE EXTENDS BEYOND THE NORMAL PERIMETER OF THE ALUMINUM DISC OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 27 ASSEMBLY INSTRUCTIONS OPERATIONS 5 Using a hammer strike the wider side of the mounting wedge with controlled direct blows to firmly seat the multi accessory attachment into the aluminum disc Usually one two direct blows will be sufficient to properly retain the attachment CAUTION Do not apply excessive impact force to the mounting wedge to cause splitting Once the multi accessory attachment is seated in the aluminum disc further impact force on the wedge will not increase the seating force CAUTION Improper seating force created by an excessive blow to the mounting wedge will not allow the attachment to properly release from the aluminum disc if direct contact with a foreign object is made Such occurrence can result in property damage and or personal injury The correct seating force for a specific job application is that which is sufficient to retain the attachment yet still allows it to release from the aluminum
48. TY AND DUST SHIELD ASSEMBLY KIT Application All Models Tools Required 1 each 5 32 inch Allen wrench 1 each 7 16 inch wrench 2 each 1 2 inch wrenches 1 each flat blade screwdriver 1 If the SURFACE GRINDER is powered by an engine disconnect the spark plug wire lf powered by an electric motor properly disconnect the extension cord or SURFACE GRINDER from the power source 2 Using the allen wrench remove the bumper guard P N 29018 016 from the machine 3 Tilt the SURFACE GRINDER back until the operator handle comes in contact with the surface The SURFACE GRINDER may not be in a stable position in this configuration To minimize the possibility of property damage and or personnel injury properly secure an appropriate weight to the handle for added stability Other means can be utilized to support the frame and provide proper machine stability Appropriate wheel chocks are also recommended FIGURE 1 DANGER EXERCISE EXTREME CAUTION WHEN WORKING NEAR OR UNDER THE SURFACE GRINDER WITH THE OPERATOR HANDLE TILTED BACK IN THE SERVICE POSITION IF THE SURFACE GRINDER IS NOT POSITIONED IN A STABLE CONFIGURATION WITH ADEQUATE COUNTERWEIGHT PROPERLY SECURED UNEXPECTED MOVEMENT CAN ALLOW THE SURFACE GRINDER TO FALL BACK TO THE WORK SURFACE THE RESULT CAN BE PROPERTY DAMAGE AND OR PERSONAL INJURY 4 Using the 7 16 inch wrench install the wrap around rubber skirt P N 29018 88 around the outside perimeter
49. Tools Required 1 each 5 16 allen wrench 2 each 5 8 wrenches 1 each arbor press of sufficient capacity and stability Parts Required Elastomeric Mount P N 29018 055 as required 1 container each Installation Lubricant or approved equivalent 1 If the SURFACE GRINDER is powered by an engine disconnect the spark plug wire If powered by an electric motor disconnect the extension cord or SURFACE GRINDER from the power source 2 Position the SURFACE GRINDER on a suitable work bench with the multi accessory discs at waist level 3 Remove the rubber latches and slide the belt guard away from the engine electric motor until it clears the catch mechanism Remove the belt guard from the main frame Clean the inside of the belt guard with an appropriate safety solvent Check for signs of wear and damage Secure in a proper storage area DFG SERIES SURFACE GRINDERS CAUTION Observe all applicable safety precautions for the solvent 4 Tilt the SURFACE GRINDER back until the operator handle comes in contact with the surface The SURFACE GRINDER may not be in a stable position in this configuration To minimize the possibility of property damage and or personal injury apply an appropriate weight to the handle to stabilize the SURFACE GRINDER FIGURE 48 Other means can also be utilized to support the frame and provide proper machine stability Appropriate wheel chocks recommended Follow the instructions
50. Y INCLUDES ITEMS W DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 67 SAFETY AND DUST SHIELD ASSY SAFETY AND DUST SHIELD ASSY NOTES OPTIONAL INSTALLATION INSTALL SKIRT ITEM 1 WITH EITHER 9 COUNTER SUNK CAPSCREWS ITEM 4 AND REINSTALL BUMPER ITEM 8 OR WITH NINE WASHERS ITEM 3 AND 9 HEX HEAD CAPSCREWS ITEM 6 INSTALL HOSE ITEM 10 TO 3 OD TUBE WELDED TO GRINDER AND TO TUBE ON SKIRT WITH HOSE CLAMPS ITEM 11 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 68 SAFETY AND DUST SHIELD ASSY SAFETY AND DUST SHIELD ASSY NO PART NO 29018 088 29018 089 29018 090 29018 091 06500 007 06499 007 08233 005 29018 016 29018 092 29018 093 14821 012 SFSG241000 PART NAME QTV REMARKS SKIRT GRINDER 1 SKIRT ASSEMBLY 1 WASHER FENDER 1 4 PLATED 1 SCREW CS 1 4 1 UNC 9 SCREW CAP 5 16 7 8 UNC 4 SCREW CAP 1 4 7 8 UNC 1 4 1 2 1 2 NUT HEX 5 16 1 8 UNC NYLOCK BUMPER RUBBER STRAP SKIRT HOSE VACUUM CLAMP HOSE SAFETY AND DUST SHIELD ASSEMBLY 14555512 INCLUDES ITEMS W DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 69 SCARIFIER ASSY SCARIFIER ASSY 9 DD NOTES 12 REQUIRED WITH 29019 010 AND 29019 011 FAILS 8 REQUIRED WITH 29018 012 FAILS OPTION
51. Y DAMAGE AND OR PERSONAL INJURY CS8 5030 SP8 5040 R WARNING BEFORE HOISTING THIS MACHINE CONSULT THE APPLICABLE OPERATOR MANUAL IMPROPER HOISTING PROCEDURES CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY GUARDS IN PLACE SP8 5050 WARNING KEEP CLEAR SP8 5030 WARNING This machine can be operated from the following power sources STARTING INSTRUCTIONS 115 VOLT 20 AMPERE 60 HZ AC ELECTRIC PROPANE CONVERTED UNITS ONLY OR 230 VOLT 10 AMPERE 60 HZ AC ELECTRIC UTILIZE 8 3 AWG MINIMUM COPPER STRANDED EXTENSION CORDS Improper extension cords will cause the moto to over heat and deploy the internal thermo protection device the device is intended to stop the motor before the heat can cause permanent damage It must be manually activated to restart the motor after a sufficient time for cooling is allowed CLOSE FUEL VALVE INSPECT 4 DO NOT USE CHOKE 4 2 4 OPERATE THE MOTOR FROM THE PROPER POWER SOURCE FOR LEAKS AND DAMAGE A voltage selector switch is provided on the electric motor Retain the switch in position AFTER STOPPING ENGINE with a long shank type lock Determine the voltage and amperage capacity of the power source before operating the motor Do not operate the motor on an improperly selected ATR OPEN FUEL VALVE power source Do not deploy the voltage selector switch while the motor is operating CONSULT OPERATOR S MANUAL Improper voltage and amperage capacity can result in moto
52. a small test area has proven that the technique will produce the desired results Usually only a square yard of floor is ground with the normal wear tests performed Repair costs can be minimized by grinding only those floor areas that accommodate traffic For example in a pallet rack warehouse it may be necessary to grind only the aisle areas and not under any of the racks The grinding process can adversely affect the surface regularity Where specific properties are important it may be OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 38 ASSEMBLY INSTRUCTIONS OPERATIONS necessary to survey the floor during the grinding process to ensure that flatness and levelness specifications are maintained Cleaning concrete floors to improve the wear resistance with the DFG Series SURFACE GRINDER Clean concrete floors have a longer service life than dirty poorly maintained floors Loose debris produces three bodied wear by allowing particles to roll between the traffic and the floor surface With some types of debris especially when lodged in vehicle wheels wear can be immediate and severe The DFG Series SURFACE GRINDER can be utilized with a number of multi accessories to clean and extend concrete floor service life The SCRAPE R TACH floor coatings removal system readily removes food oil and rubber accumulations from high traffic floor areas The Clean Sweep silicon impregnated rotary brushes along with biodegradabl
53. ampere 115 VAC 60 Hz nominal or a clean 10 ampere 230 VAC 60 Hz nominal power source A clean power source refers to the amperage available on the individual electrical circuit selected Additional electrical products already utilizing the same circuit will reduce the available amperage resulting in starting and operational difficulties A voltage switch 115 230 VAC 60 Hz is provided on the motor For added security the voltage switch can be locked in position with a combination or keyed lock with an extended shank length FIGURE 31 OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 30 ASSEMBLY INSTRUCTIONS OPERATIONS CAUTION Operating the SURFACE GRINDER from a power source of improper voltage and amperage will result in un repairable damage to the electric motor and related controls SURFACE GRINDER as a standard accessory The twist clock feature allows the extension cord to be pulled by the SURFACE GRINDER without becoming detached Wire the NEMA 6 20 receptacle to the appropriate extension cord that wil be coupled to the NEMA 6 20P plug provided on the SURFACE GRINDER FIGURE 33 F s FIGURE 31 4 Providing proper voltage and amperage levels to the electric motor is essential to obtain maximum productivity and service life Low vollage and amperage levels will cause the motor to overheat The motor is equipped with automatic thermal protection device that will stop it before major internal dama
54. by the use of a plastic wedge FIGURE 4 The designation system for the grinding stones utilizes a system similarly utilized for most abrasive products the larger the number the finer the grain structure and usually the smoother resulting finish OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 18 ASSEMBLY INSTRUCTIONS OPERATIONS a The C06 and C10 coarse grade stones are the most popular utilized stones and result in maximum material removal rates They are utilized for general grinding and the removal of trowel marks high spots and rough sections on concrete surfaces The average service life is approximately 4 to 10 hours b The C24 medium grade stone will result in lower material removal rates lt is utilized for finer finish grinding of concrete and rough grinding on terrazzo and other types of stone floor configurations The average service life is approximately 6 to 10 hours The C80 fine grade stone will result in still lower material removal rates It is utilized for polishing concrete and medium grinding on terrazzo and other types of stone floor configurations with a water slurry mixture The average service 15 approximately 8 to 20 hours d The C120 super fine grade stone will result in the lowest material removal rates It is utilized for final polishing on terrazzo and other types of stone floor configurations with a water slurry mixture only The average service life is approximately 4
55. ch assembly utilized on both the gasoline engine powered and Propane converted SURFACE GRINDERs is designed to deliver an extended service while requiring minimal service However long term use of the SURFACE GRINDER can allow accumulation of fine dusts and powders within the clutch assembly These dusts and powders can dramatically reduce the capacity of the the clutch drum bearing resulting in the following operational characteristics a When operating the engine at idle speed the centrifugal clutch assembly will not fully disengage allowing the multi accessory discs to rotate at low speed b When the engine is advanced to and or from the idle speed position erratic machine movement or grinding and thrashing noises from the clutch area are detected In many cases clutch assembly removal a cleaning of the bearing surfaces and reassembly will solve the problem 7 Rotate the take up cap screws clockwise until the V belts have enough tension to not allow them to fall off the centrifugal clutch and or pulleys Using the 9 16 inch wrench remove the retaining cap screw from the engine crankshaft Using the 5 32 inch allen wrench loosen the two set screws located near the snap ring The clutch can now be removed from the engine crankshaft FIGURE 44 The centrifugal clutch is comprised of a rotor shoe assembly a drum pulley assembly a thrust washer and retaining snap ring a Using the snap ring pliers
56. charge for this service Do not operate the SURFACE GRINDER with onlookers close by Caution all onlookers to stand clear The grinding process can result in flying particles being emitted at high velocity and striking the operator and or onlookers This can lead to the possibility of property damage and or personal injury Keep all body parts loose clothing and foreign objects clear of the rotating drum and flails Start the engine or electric motor according to the instructions as outlined in this manual to minimize the possibility of unexpected contact with the work surface Unexpected contact with the work surface can cause the loss of machine control and the possibility of property damage and or personal injury PAGE 12 SAFETY PRECAUTIONS 7 Start and operate the SURFACE GRINDER only in a well ventilated area Carbon Monoxide fumes given off by an engine are poisonous Breathing these fumes can result in property damage and or personal injury Operate the SURFACE GRINDER only when where visibility and light are adequate for the job at hand Work carefully Always hold the operator handle firmly with both hands Wrap your fingers around the handle keeping it cradled between your thumbs and fingers Always make sure the operator handle is in good condition and free of moisture pitch oil or grease Wear gloves to improve your grip Never leave the SURFACE GRINDER running unattended Special care must be exercised on sli
57. cially useful for removing a thin layer of concrete in final preparation for a new coating application Can be used in both wet and dry DFG SERIES SURFACE GRINDERS job applications Worn inserts are easily replaced in a matter of seconds Service life is dependent upon many variables but can approach 35 000 square feet per set making it a cost efficient solution for many job applications WEE FIGURE 24 INSTALLING A MULTI ACCESSORY ATTACHMENT not including multi segmented dry diamond discs IN THE COUNTERROTATING DISCS Application All Models Tools Required 1 each Small Hammer Parts Required 6 each P N 29019 017 Mounting Wedge DANGER WHEN INSTALLING A MULTI ACCESSORY ATTACHMENT ON THE SURFACE GRINDER ALWAYS WEAR THE APPROPRIATE SAFETY EYEWEAR AND APPAREL TO MINIMIZE THE POTENTIAL FROM FLYING DEBRIS FLYING DEBRIS CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 1 If the SURFACE GRINDER is powered by an engine disconnect the spark plug wire lf powered by an electric motor properly disconnect the extension cord or SURFACE GRINDER from the power source 2 Tilt the SURFACE GRINDER back until the operator handle comes in contact with the surface The SURFACE GRINDER may not be in a stable position in this configuration To minimize the possibility of property damage and or personal injury properly secure an OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 26 ASSEMBLY INSTRUCTION
58. d service requirements 1 Determine the location s of both the oil filler and oil drain plug s 2 Wipe oil dust and accumulated dirt from the filler plug area 3 Using the funnel fill the engine crankcase with a high grade motor oil Consult the material supplied by the engine manufacturer for proper amount weight and service classification 4 Replace the oil filler plug and tighten Wipe off any excess oil spilled on the engine crankcase and SURFACE GRINDER 5 Do not operate the engine unless proper oil level is maintained as per the material supplied by the engine manufacturer FILLING THE DFG G SERIES ENGINE FUEL TANK Tools Required 1 each small clean funnel CAUTION Never mix oil with gasoline Four cycle engines are not designed to be operated with oil mixed with the gasoline 1 Determine the location of the fuel tank filler cap 2 Carefully clean the filler cap and surrounding area to insure that no dirt or debris falls into the fuel tank Remove the filler cap OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 17 ASSEMBLY INSTRUCTIONS OPERATIONS 3 Using the funnel fill the fuel tank with fresh clean fuel according to the specifications outlined in the material supplied by the engine manufacturer Do not overfill the tank or spill any fuel If the fuel tank incorporates a screen mesh to prevent debris from falling into the tank do not remove to increase the fill rate Replace the
59. d with the SURFACE GRINDER Typical discs are approximately 10 inch diameter and feature up to 20 diamond segments that are welded or brazed to each assembly To install the multi segmented dry diamond discs the standard aluminum multi accessory discs are first removed from the SURFACE GRINDER The diamond discs fasten directly to the gimbal heads with 3 8 inch diameter x 1 inch long Allen head capscrews FIGURE 22 The rear wheel assembly is then placed in the lowest position to compensate for the thickness variance of the diamond discs FIGURE 23 FIGURE 21 OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 25 ASSEMBLY INSTRUCTIONS OPERATIONS To maximize the service of the diamond segments it is recommended that the blades be rotated between gimbal heads a minimum of once for every 8 hours of operation FIGURE 22 Diamond Segment Block The diamond insert block is designed to compliment the multi segmented diamond disc where a quick changeover feature to other attachments is desired Diamond segments are retained into a steel block assembly and deliver up to 5 times greater productivity rates than the silicon carbide stones FIGURE 24 The design resists clogging while delivering a conservative service life up to 15 times longer than the stones Diamond is the ideal choice for larger concrete removal projects and the removal of epoxies paints and many thin film coatings FIGURE 23 The concept is espe
60. e 15 Installing the SSG24 1000 Safety and Dust Shield Assembly 16 Bo Ore ENE A DM EL 17 FING the Engine Grankease MINO N NAE 17 Filling the DFG G Series Engine Fuel Tank essere 17 Assembly Instructions Operation 18 80149 DCAM OM EE NE 18 Multi Accessory Attachments and 19 26 Installing a Multi Accessory Attachment not including multi segmented dry diamond discs 7 26 27 Removing a Multi Accessory Attachment not including multi segmented dry diamond discs from the countersrotatirig diSCS saca l el cl RS ved rede ev Ruta M a 28 29 itansporting the couac GINGEN 29 A justingtne Operdtof Handle FANN 30 Starting the DFG E Series Electrically Powered Surface Grinder On the Job Site 30 32 Starting the DFG G Series Gasoline Powered Surface Grinder On the Job Site 32 33 Operating the Surface Grinder on the Job Site seen 33 36 stopping the DFG E Electrically Powered Surface Grinder 36 stopping the DFG G Gasoline Powered Surface 36 Operational Parameters and Techniques for DFG Series Surface Grinder s
61. e attach fittings Determine that the configuration minimizes potential kinks depressions which can reduce the airflow Secure the hose clamps tight with the screwdriver 7 The DFG 1000 Safety and Dust Shield Assembly Kit can be removed by reversing the above procedure and reinstalling the original bumper P N 29018 016 8 Return the SURFACE GRINDER to its normal operating position 9 If the SURFACE GRINDER is powered by a gasoline engine reconnect the engine spark plug wire If powered by an electric motor and the machine is to be used immediately reconnect the extension cord or SURFACE GRINDER to the power source Determine that the ON OFF switch located on the operator handle is in the OFF position DANGER UNEXPECTED MACHINE START UP CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY DFG SERIES SURFACE GRINDERS Before Starting the Engine FILLING THE ENGINE CRANKCASE WITH OIL Applications DFG G SURFACE GRINDER Tools Required 1 each small clean funnel The DFG G Series SURFACE GRINDER is equipped with a Honda GX340 gasoline engine This engine is normally not pre serviced at the factory and will require the addition of oil in the crankcase before being placed in service Consult the material supplied by the engine manufacturer for the engine that has been ordered with your SURFACE GRINDER Carefully review this material to become familiar with specific operating characteristics recommendations an
62. e bearing insert to provide its self aligning feature and prevent the formation of corrosion 5 Do not apply belt dressing materials to the V belts for the purpose of minimizing slippage These products typically attract foreign material accumulations that can accelerate component wear Excessive V belt slippage can be eliminated with proper V belt tension and alignment ELECTRIC MOTOR SERVICE Application DFG E Series SURFACE GRINDER The electric motor is capable of operating for many years with a reasonably small amount of maintenance Before attempting to service the motor disconnect the SURFACE GRINDER from the power source Clean the motor surfaces periodically preferably with a vacuum cleaner DFG SERIES SURFACE GRINDERS Heavy accumulations of dirt and lint will result in overheating and premature failure of the motor The electric motor is equipped with higher capacity ball bearings and under normal service and ambient temperatures should not require relubrication for many years you feel that the motor requires relubrication contact the local representative of the motor manufacturer for specific information The seals utilized with the motor are intended to deliver a longer service life in a concrete dust environment When replacing the seals utilize only components meeting original factory specifications ENGINE SERVICE Application DFG G Series SURFACE GRINDER Consult the material supplied by the
63. e detergent applied to floors removes ground in dirt and debris from shop and industrial floors Dry diamond segmented discs and blocks can be utilized to remove surface imperfections DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 39 MAINTENANCE SERVICE Maintenance Service PREVENTATIVE MAINTENANCE CHECK LIST Application Models The normal operation of the SURFACE GRINDER produces extreme dirt and dust along with levels of random vibration Before operating the SURFACE GRINDER the following service list should be accomplished This list is for reference only and is not intended to be all inclusive Other subject areas can be added at the discretion of the owner s and or operator s 1 Check all fasteners for proper torque values If a fastener requires re torquing consult a torque chart for proper value Properly discard and replace any worn fastener with a factory approved replacement part 2 Check the V belts for wear Adjust or replace as necessary Check pulleys for wear and proper alignment Many loose materials created as a result of operating processes can be extremely abrasive 3 Keep the SURFACE GRINDER clean Wash the unit after each use Keep loose materials from accumulating around engine cooling fins Determine that the interior sections of the frame are free of material build ups Such build ups can restrict the operating process and present a potential safety
64. e flails A scarifier block set up with only star beam or pentagonal flails will not penetrate the work surface at satisfactory rates This configuration will minimize the hammering or impact action of the flails Variances in material thickness and manufacturing processes can affect the final thickness of both flails and spacer washers Because of this occurrence trial and error is important for assembling flails and OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 21 ASSEMBLY INSTRUCTIONS OPERATIONS spacer washer on the scarifier block By mixing and matching flails and spacer washers of specific thicknesses the required number of components can be assembled on a block in a minimum amount of time DANGER USE ONLY FACTORY SUPPLIED SPACER WASHERS ON THE SCARIFIER BLOCK OTHER WASHER TYPES AND OR CONFIGURATIONS CAN PRODUCE ABNORMAL WEAR AND ELONGATION RESULTING IN COMPLETE SEPARATION FROM THE SCARIFIER BLOCK INADVERTENT SPACER WASHER SEPARATION CAN LEAD TO PROPERTY DAMAGE AND OR PERSONAL INJURY Scarifier Block Bushing Scarifier block bushings are designed to be discarded whenever the flails are replaced FIGURE 11 Normal wear should be uniform about the bushing circumference w FIGURE 11 Uneven bushing wear would suggest the following problems 1 Inadequate free play exists between the flails ispacer washers and the scarifier block case the flails and spacer washers do not have c
65. e shipment for freight damage and or missing parts If shipping damage is evident contact the delivering carrier immediately to arrange for an inspection of the damage by their claims representative Federal law requires that a claim be filed within a specific time period If missing parts are detected notify your dealer who will assist you in obtaining them The SURFACE GRINDER is shipped from the factory completely assembled If ordered with the SURFACE GRINDER multi accessory attachments are normally shipped separately to minimize the potential for loss during shipment Check all fasteners for proper security Consult a fastener torque chart for the proper torque value if any fastener is found to require retorquing After April 1 1996 all SURFACE GRINDERS are shipped from the factory with the SG24 1000 Safety DFG SERIES SURFACE GRINDERS and Dust Shield Assembly Kit included as a standard accessory The kit is included in a separate package and is not normally installed by factory personnel The owner and or operator has have the option to install the skirt assembly for any specific job application The DFG 1000 Safety and Dust Shield is designed to perform the following job functions 1 To contain loose materials within the platform area of the SURFACE GRINDER as a direct result of a specific grinding process This includes materials removed from the surface as well as any slurry mixture utilized to help maximize material
66. e with a genuine factory approved replacement part only The SURFACE GRINDER utilizes many self locking type hexagon head nuts to minimize the effects of vibration Replace all self locking hardware with genuine factory approved replacement parts only Consult the material supplied by the engine or electric motor manufacturer for gt specific information relative to proper operational lubrication and storage requirements OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 14 ASSEMBLY INSTRUCTIONS OPERATIONS Assembly The DFG Series SURFACE GRINDER is shipped from the factory secured on a specially designed wooden pallet and protected from external damage by a corrugated carton or wood crate If shipped with a corrugated carton the SURFACE GRINDER can be secured to the pallet by wood laths nailed to the pallet body Remove the carton or crate immediately upon receipt using suitable tools to remove the nails REMOVING THE SURFACE GRINDER FROM THE PALLET Application Models Tools Required 1 each pliers 1 each claw hammer or a hammer and an appropriate pry bar The SURFACE GRINDER is secured to the pallet with steel banding Using the pliers cut and remove the banding The SURFACE GRINDER can then be removed from the pallet DANGER WEAR SAFETY GLASSES AND OTHER APPROPRIATE SAFETY APPAREL WHEN CUTTING THE STEEL BANDING AND OR REMOVING THE CORRUGATED WOOD SHIPPING CRATE Visually inspect th
67. eating torque value will allow the insert to become loose from the unit body resulting in premature component wear and improper scraping action An excessive torque value will strip the threads of the capscrew or unit body 4 Determine that the unit body is free to rotate about the 5 16 inch diameter capscrew that retains the body to the unit A body that does not freely rotate indicates that a material build up exists between the rubber mount and retaining capscrew exits This build up must be removed by disassembling the body from the unit and cleaning all contact areas with the safety solvent FIGURE 20 The SCRAPE R TACH system is designed to be installed with the edge of the tungsten carbide inserts facing the direction of rotation Markings are provided to indicate proper direction of rotation FIGURE 20 DFG SERIES SURFACE GRINDERS CAUTION Installing the SCRAPE R TACH system with the tungsten carbide inserts facing opposite the rotation direction will not deliver satisfactory material removal rates and result in premature component wear requiring early replacement Multi Segmented Dry Diamond Disc Many times increased concrete removal rates can be achieved with the use of multi segmented dry diamond discs FIGURE 21 These discs are designed to operate dry or can also be utilized with water If the wet option is chosen an external source for providing water must be devised No provision for water use is provide
68. ed too tight on the scarifier frame Remove and or replace flails and spacer washers See MULTI ACCESSORY ATTACHMENTS AND APPLICATIONS Mixing new and worn flails silicon carbide stones etc Remove and replace with components of the same approximate size and diameter See MULTI ACCESSORY ATTACHMENTS AND APPLICATIONS OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 48 STORAGE Storage Application Models Proper procedure for long term storage of the SURFACE GRINDER will protect it against the effects of corrosion and damage If the SURFACE GRINDER is not to be operated for a period of 30 days or more proceed to store as follows 1 Clean all accumulated foreign material from the SURFACE GRINDER utilizing an appropriate safety solvent CAUTION Observe all applicable safety precautions for the solvent 2 Follow the procedure as outlined in the material supplied by the engine manufacturer describing long term storage for the engine 3 Check all visible parts for wear breakage or damage Order any part not required to make the necessary repair This will avoid a needless delay when operating the SURFACE GRINDER at next use 4 Apply a dry film lubricant to all exposed metal components to prevent the formation of rust 5 Store the SURFACE GRINDER inside If the SURFACE GRINDER must be stored outside protect it with a suitable covering DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV
69. engine manufacturer for specific service and maintenance information regarding 1 Muffler 2 Spark Plug 3 Air Filter System 4 Carburetor Adjustment 5 Ignition System 6 Short and Long Term Storage 7 Maximum Governor Speed 8 Emission Standards Keep this information stored with the Operator s Manual for the SURFACE FigureGRINDER so it will always be available for use when the engine requires service or maintenance A properly maintained engine will add considerably to the service life and overall productivity of the SURFACE GRINDER OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 46 TROUBLESHOOTING Troubleshooting ELECTRIC MOTOR Application DFG E Series SURFACE GRINDER MOTOR FAILS TO START ON OFF switch in the OFF position Turn the switch to the ON position Improper voltage selection Determine the available voltage value from the power source Move the voltage selection switch located on the motor to the proper selection SURFACE GRINDER and or extension cord is not plugged into the power source Determine that all electrical connections have been properly made The NEMA 6 20 Series cap and receptacle set is of a twist lock configuration and requires a twist motion to ensure a proper connection Improper extension cord size and capacity Operate the SURFACE GRINDER with copper stranded 8 AWG or larger extension cords Improper extension cord size and capacity will result in significant heat rise
70. for maximizing the safe and efficient operation of the SURFACE GRINDER Record the SURFACE GRINDER and electric motor serial numbers in the spaces provided below Model Number Serial Number Electric Motor Serial Number Date of Purchase Specifications and design are subject to change without notice or obligation All specifications are general in nature and are not intended for specific application purposes Multiquip Inc reserves the right to make changes in design engineering or specifications and to add improvements or discontinue manufacture at any time without notice or obligation Multiquip Inc and its agents accept no responsibility for variations which maybe evident in actual products specifications pictures and descriptions contained in this publication DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 OPERATOR INSTRUCTIONAL DATA SHEET The following undersigned operators of the SURFACE GRINDER described and or pertaining to this Operator Manual have received formal safety and operational information instruction from the undersigned owner s instructor s in accordance to OSHA 29 CFR 1926 21 b 2 and or applicable updated revisions pertaining to but not necessarily limited to the 1 READING COMPREHENSION AND ACKNOWLEDGEMENT OF THE MATERIAL COMPRISING THE ENTIRE CONTENTS OF THE APPLICABLE OPERATOR MANUAL AND APPLICABLE SAFETY AND OPERATIONAL INFORMATION VIDEO TAPE FOR THE SURFACE GRINDER
71. ge can result After the motor has cooled to an acceptable temperature level the switch must be manually activated to restart FIGURE 32 FIGURE 32 To minimize the voltage drop to the motor all extension cords should be copper stranded 8 AWG or larger A NEMA 6 20R twist lock type receptacle is provided with the DFG E Series DFG SERIES SURFACE GRINDERS FIGURE 33 DANGER PROPERLY INSPECT ALL EXTENSION CORDS AND WIRING DEVICES FOR STRUCTURAL INTEGRITY DO NOT UTILIZE A CORD WITH A WORN OR CUT OUTER JACKET MATERIAL DO NOT UTILIZE A CORD WITH EXPOSED INNER WIRES OR INSULATION MATERIAL DO NOT UTILIZE A CORD THAT HAS BEEN REPAIRED WITH ELECTRICAL TAPE USE OF A AN EXTENSION CORD OF IMPROPER STRUCTURAL INTEGRITY CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY DANGER ALL ELECTRICAL WIRING MUST BE INSTALLED AND OR APPROVED IN ACCORDANCE TO LOCAL ELECTRICAL CODES AND PRACTICES AN IMPROPER WIRING INSTALLATION CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 5 Determine that the power outlet to be utilized is properly grounded This can be accomplished with proper testing equipment and procedures If there are any questions regarding the suitability of a specific power outlet contact the Customer Service Department for assistance BEFORE OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 31 ASSEMBLY INSTRUCTIONS OPERATIONS utilizing the SURFACE GRINDER There is no charge for this service A qua
72. hazard Clean and remove any material build up from the SURFACE GRINDER after each use 4 Engine service life can be extended with proper air cleaner maintenance Consult the material supplied by the engine manufacturer for specific information 5 Check for proper oil level Always use clean high quality engine oil Change oil as required Consult the material supplied by the engine manufacturer for specific information 6 Remove material accumulations from the exterior surfaces of the electric motor The electric motor is a totally enclosed fan cooled TEFC design Keep the fan fins clear of material accumulations to enhance airflow over the motor exterior for cooling purposes DFG SERIES SURFACE GRINDERS DANGER NOT PERFORM PREVENTATIVE EE CHECKS WITH THE ENGINE OR ELECTRIC MOTOR RUNNING STOP THE POWER SOURCE AND DISCONNECT THE SPARK PLUG OR EXTENSION CORD BEFORE PERFORMING ANY MAINTENANCE TO THE SURFACE GRINDER IF GASOLINE ENGINE POWERED RECONNECT THE SPARK PLUG BEFORE RESTARTING THE ENGINE IF ELECTRIC MOTOR EQUIPPED TURN THE ON OFF SWITCH TO THE OFF POSITION BEFORE RECONNECTING THE EXTENSION CORD IMPROPER PROCEDURES CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY CHECKING V BELT TENSION AND ALIGNMENT Application Models Proper V belt tension and alignment are essential for smooth transmission of horsepower and extended service life Improper tension and alignment will accelerate V bel
73. he floor 2 Smoothing the floor surface with a skip float 3 Cover the floor with polyethane sheeting 4 Removing the sheeting and grinding the floor down a uniform depth of approximately 1 32 inch within 24 to 48 hours of the initial pouring The C06 and C10 silicon carbide grinding stones usually used for the process although the multi segmented dry diamond blades can be use as an alternative with substantially greater productivity rates The main benefit of early age grinding is that it eliminates late work in cold weather With ordinary finishing methods a slab cast in the morning of a cold weather day might not get finished trowelled until very late at night With grinding the construction crew are able to leave the job at the end of a normal work day and return 1 or 2 days later to finish the job Early age grinding may not reduce the total number of work hours but it usually eliminates the need for work at overtime rates which can substantially increase total project costs One side benefit of early age grinding is that the process demands less skill than conventional floating and trowelling This makes it an attractive process where skilled crew personnel may not be available It is also an excellent procedure for concrete floors that will be eventually covered by carpet or an applied coating Definitions of floor flatness and levelness The terms flatness and levelness have poorly understood meanings in ever
74. hort section of 1 1 2 inch inside diameter steel tubing can be utilized for this purpose Using the arbor press apply a steady force in a straight line direction to the mount until it fully penetrates the cavity in the mounting disc Do not attempt to push the elastomeric mount through the mounting disc with excessive force Damage to the elastomeric mount will result 10 Reassemble the mounting discs to the transmission shaft 11 Reassemble the mounting plate to the mounting disc 12 Reassemble the aluminum multi accessory disc to the mounting plate 13 Check to determine that the replacement elastomeric mounts allow for proper position of the aluminum multi accessory disc lf the elastomeric mounts are not properly positioned they will require removal and reinstallation The removal process can produce tears and DFG SERIES SURFACE GRINDERS abrasions in the mount that will require new replacements FIGURE 50 LUBRICATION REQUIREMENTS Application Models Parts Required 1 each standard grease gun filled with one of the following ESSO Beacon 325 Shell 2 Chevron SHI or equivalent 1 each container of dry film lubricant 1 Lubricate the caster wheel bearings with a dry film lubricant only Dry film lubricants dry immediately upon contact Use sparingly Excess lubricant will attract the fine grained powdered materials described and directly affect bearing service life CAUTION
75. how a part that has not been assigned a formal part number at the time of publication A blank entry generally indicates that the item is not sold separatelv or is not sold bv Multiauip Other entries will QTY Column Numbers Used Item quantity can be indicated by number a blank entry or A R As Required is generally used for hoses or oth parts that are sold in bulk and cut to length A blank entry generally indicates that the item is not sc separately Other entries will be clarified in the Remark Column REMARKS Column Some of the most common notes found in the Remark Column are listed below Other additional notes needi to describe the item can also be shown Assembly Kit All items on the parts list with ti same unique symbol will be included when this item purchased Indicated by INCLUDES ITEMS W unique symbol Serial Number Break Used to list an effective ser number range where a particular part is used Indicated by S N XXXXX AND BELOW SIN XXXX AND ABOVE SIN XXXX TO S N XXX Specific Model Number Use Indicates that the p is used only with the specific model number or moc number variant listed It can also be used to show part is NOT used on a specific model or model numb variant Indicated by ONLY NOT USED ON XXXX Make Obtain Locally Indicates that the part ci be purchased at any hardware shop or made out available items
76. ific job function and requires adequate and thorough instruction BEFORE it is operated The size power complexity and operating characteristics of this type of powered equipment would dictate that each operator must receive adequate professional instruction regarding the proper operation of this SURFACE GRINDER before being allowed to utilize it BEFORE attempting to utilize this SURFACE GRINDER read this Operators Manual the applicable Safety and Operating Information Video Tape and the material supplied by the engine manufacturer to familiarize each operator with its correct operating procedures Avoid the urge not to take DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 the necessary time to read this Operators Manual before operating the SURFACE GRINDER DO NOT OPERATE THE SURFACE GRINDER UNTIL EACH OPERATOR COMPLETELY COMPREHENDS THE CONTENTS OF THIS MANUAL AND THE APPLICABLE SAFETY AND OPERATIONAL INFORMATION VIDEO TAPE Develop a comprehensive program for the safe operation of the SURFACE GRINDER by its owner s and or operator s Such a program will include but is not limited to instructional requirements for operation applicable OSHA requirements local laws and regulations job site safety and a SURFACE GRINDER maintenance program Constantly examine and upgrade this program to guarantee owner s and or operator s safety Each operator must be fully instructed regarding the specifics of thi
77. ight be aggravated by strenuous work check with your doctor BEFORE operating the SURFACE PAGE 10 SAFETY PRECAUTIONS DFG SERIES SURFACE GRINDERS GRINDER Guide against the possibility of back related injuries Always lift the SURFACE GRINDER with leg muscles and not with the back Prolonged use of the SURFACE GRINDER other similar machines exposes the operator to vibrations which may produce Whitefinger Disease Raynaud s Phenomenon This phenomenon reduces the hand s ability to feel and regulate temperature produces numbness and burning sensations and may cause nerve and circulation damage and tissue necrosis Anti vibration systems do not guarantee that you will not sustain Whitefinger Disease Therefore continuous and regular users should closely monitor the condition of their hands and fingers After each period of use exercise to restore normal blood circulation If any of the symptoms appear seek medical advice immediately Clothing must be sturdy and snug fitting but allow complete freedom of movement Never wear loose fitting jackets scarves neckties jewelry flared or cuffed pants or anything that could become caught on controls or moving parts Wear long pants to protect your legs Protect your hands with heavy duty non slip gloves to improve your grip Good footing is most important when operating the SURFACE GRINDER Wear sturdy boots with non slip soles Steel toed safety shoes are highly reco
78. ike no two work surface materials can be penetrated and removed by the exact same method The nature of the grinding process along with operator experience skill and common sense would suggest that efficient DFG SERIES SURFACE GRINDERS and productive material removal is a matter of trial and error Combinations of multi accessory attachment type condition and feed rate are direct factors that will also determine the overall success of the job application MULTI ACCESSORY ATTACHMENTS AND APPLICATIONS Application Models While individual multi accessory attachment design and configuration may vary basic operational characteristics are identical impact upon a work surface material and remove a percentage of the material This common operational characteristic has led to the development of the following popular multi accessory attachments Grinding Stones Grinding stones are available in a number of grades including CO6 extra coarse C10 coarse C24 medium C80 fine and C120 super fine grade FIGURE 4 All stones incorporate silicon carbide as the abrasive medium and employ a clay binder as the matrix material Vitrified type stones utilize an oven baking process that produces greater service life over other manufacturing processes As the clay material wears away it exposes new sharp edges of the imbedded silicon carbide material All stones have the identical 2 x 2 X 4 dimensions and are secured to the machine
79. il When a bushing can no longer supply adequate force against the flails it will break allowing the flails to be hurdled against the inside of the SURFACE GRINDER frame The more aggressive flails require greater forces to keep them contained on the block These forces in turn create faster and or uneven bushing wear rates Because scarifier bushings are critical component of the actual scarifying process it is important that each bushing be inspected on a regular basis to determine proper structural integrity Wire brushes Typical applications include light scarifying and cleaning of concrete asphalt steel and tile surfaces Wire brushes are secured to the machine with plastic wedges FIGURE 12 LG FIGURE 12 OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 22 ASSEMBLY INSTRUCTIONS OPERATIONS Wire brushes are available in a number of flat wire sizes and resulting configurations With continuous use the flat wire will take a set that can limit effectiveness and overall productivity FIGURE 13 For best results flat wire brushes should be rotated end for end in the aluminum multi accessory discs a minimum of once for every one hour of operation External weight applied to the SURFACE GRINDER will not normally increase productivity rates and only accelerate flat wire wear rates FIGURE 13 Floor Brushes Eleven inch diameter silicon carbide impregnated floor brushes are available in a number of st
80. ith greater horsepower and less mobility method and or process be utilized to properly complete the job with the degree of efficiency and safety required Contact the Customer Service Department for specific information regarding suitable job applications job sites surface conditions and operator experience skill common sense recommendations for this SURFACE GRINDER BEFORE utilization There is no charge for this service MAINTENANCE REPAIR AND STORAGE 1 OPERATION AND PARTS MANUAL REV 4 05 28 09 Use only genuine approved replacement parts and accessories for maintenance and repair Use of parts and accessories manufactured by others can result in property damage and or personal injury Follow the Service instructions as outlined in the appropriate section of this manual Always stop the engine or electric motor and disconnect the spark plug wire or power source cable BEFORE checking or working on the SURFACE GRINDER Always properly maintain the SURFACE GRINDER Frequently check all fasteners and individual parts Built in safety features are effective only if they are maintained in good working condition Replace any questionable or assembly with a genuine factory approved replacement part Do not forsake proper maintenance for the price of a few replacement parts Proper maintenance does not cost it actually pays dividends Do not attempt any maintenance repair work not described in this manual Have
81. ld The information and specifications included in this publication were in effect at the time of approval for printing Illustrations descriptions references and technical data contained in this manual are for guidance only and may not be considered as binding Multiquip Inc reserves the right to discontinue or change specifications design or the information published in this publication at any time without notice and without incurring any obligations Your Local Dealer 15 MULTIQUIP
82. lified electrician can also be consulted If a 115 VAC power outlet is selected it is recommended that a properly tested externally mounted ground fault circuit interrupter GFCI be utilized at all times as an additional safety precaution Ground fault circuit interrupters are not available for operation on 230 VAC FIGURE 34 FIGURE 34 DANGER FOR MAXIMUM PROTECTION AGAINST FAULT ALWAYS CONFIGURE THE GROUND FAULT CIRCUIT INTERRUPTER BE PLUGGED INTO THE EXTENSION CORD A CONFIGURATION WITH THE GROUND FAULT CIRCUIT INTERRUPTER PLACED BETWEEN THE POWER SOURCE AND THE EXTENSION CORD WILL NOT AFFORD MAXIMUM PROTECTION AGAINST A POTENTIAL FAULT 6 Couple the NEMA 6 20R receptacle and the NEMA 6 20P plug together 7 Grasp the operator handle with firm gripping When starting the electric motor apply a down force directly to the operator handle to help reduce the amount of machine weight against the work surface Turn the ON OFF switch to the ON position Reduce the amount of applied down force on the operator handle as the electric motor attains its operational speed When operating on 115 VAC the electric motor will require additional starting time to help compensate for the additional starting amperage requirement This time is usually within two seconds of activating the ON OFF switch DFG SERIES SURFACE GRINDERS 8 The DFG E Series electrically powered SURFACE GRINDER is not equipped with a centrifugal c
83. lutch assembly The electric motor is directly coupled to the multi accessory discs by a V belt spur gear transmission DANGER AS SOON AS THE ELECTRIC MOTOR HAS STARTED THE OPERATOR MUST BE IN A POSITION TO ASSUME DIRECT AND FULL CONTROL OF THE SURFACE GRINDER FAILURE TO ASSUME DIRECT AND FULL CONTROL CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 9 The DFG E Series electrically powered SURFACE GRINDER is stopped by moving the ON OFF switch located on the operator handle to the OFF position For safety considerations it is also recommended that the extension cord be disconnected from the SURFACE GRINDER and electric power source whenever the SURFACE GRINDER is not in use on the job site STARTING THE DFG G SERIES GASOLINE POWERED SURFACE GRINDER ON THE JOBSITE 1 Position the SURFACE GRINDER on a flat and level surface of firm foundation 2 Refer to the material supplied by the engine manufacturer for the correct starting operation and stopping procedures 3 The DFG G Series SURFACE GRINDER is equipped with a centrifugal clutch assembly The clutch is designed to engage at approximately 2400 RPM engine speed Normal operation of the clutch will allow the engine to operate at its designated idle speed without the multi accessory discs rotating If the multi accessory discs rotate below the designated engine idle speed do not continue to operate the SURFACE GRINDER until the problem has been properl
84. me and Address Shipping Address if different than billing address Return Fax Number Applicable Model Number Quantity Part Number and Description of Each Part NOTICE 17 7 7 7 7572 1 When ordering parts please supply J Specify Preferred Method of Shipment V UPS Fed Ex DHL Priority One Truck Ground B Next Day Second Third Day All orders are treated as Standard Orders and will ship the same day if received prior to PST WE ACCEPT ALL MAJOR CREDIT CARDS a VIULEIQUIP gt DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 NOTICE TO OPERATORS IF YOU CAN NOT READ OR DO NOT FULLY UNDERSTAND THE CONTENTS OF THIS MANUAL PLEASE CONTACT THE FACTORY FOR PROPER ASSISTANCE BEFORE ATTEMPTING TO OPERATE THIS PRODUCT SI TU NO PUEDES LE ER O NO COMPRENDES EL CONTENIDO DE ESTE MANUAL FAVOR DE PONERSE EN CONTACTO CON LA FABRICA PARA ASSISTENCIA A PROPIA ANTES DE INTENTAR PARA OPERAR ESTE PRODUCTO SOLLTEN SIE DIESE GEBRAUCHSANWEISUNG NICHT LESEN KOENNEN ODER ES NICHT VOLLKOMMEN VERSTEHEN WENDEN SIE SICH BITTE AN DEN HERSTELLER FUER RICHTIGE HILFE EHE SIE VERSUCHEN DIESES PRODUKT ZU OPERIEREN SI VOUS NE LISEZ OU NE COMPRENDRE ENTIEREMENT LES MATIERES DE CE MANUEL S IL VOUS PLAIT CONTACTEZ L USINE POUR L ASSISTANCE APPROPRIEE AVANT D UTILISER LE PRODUIT DANGER CAUTION These safety alert symbols identify important safety
85. ments will be accepted and credit will be allowed subject to the following provisions 1 A Returned Material Authorization must be approved by Multiquip prior to shipment 2 Toobtaina Return Material Authorization a list must be provided to Multiquip Parts Sales that defines item numbers quantities and descriptions of the items to be returned a The parts numbers and descriptions must match the current parts price list b The list must be typed or computer generated c The list must state the reason s for the return d The list must reference the sales order s or invoice s under which the items were originally purchased e The list must include the name and phone number of the person requesting the RMA 3 Acopy ofthe Return Material Authorization must accompany the return shipment 4 Freight is at the sender s expense All parts must be returned freight prepaid to Multiquip s designated receiving point DFG SERIES SURFACE GRINDERS 5 Parts must be in new and resalable condition in the original Multiquip package if any and with Multiquip part numbers clearly marked 6 Thefollowing items are not returnable a Obsolete parts If an item is in the price book and shows as being replaced by another item it is obsolete b Any parts with a limited shelf life such as gaskets seals O rings and other rubber parts that were purchased more than six months prior to the return date c
86. mmended Never wear tennis shoes or other similar type shoes which afford little or no protection Wear an approved safety hard hat to protect the operator s head s where there is a danger of head injuries Noise generated by the engine of the SURFACE GRINDER and the actual process itself can damage your hearing Wear approved sound barriers ear plugs or ear mufflers to protect your hearing Continuous and regular operators should have their hearing checked regularly Visually inspect the SURFACE GRINDER components tools and accessories for damaged or worn parts BEFORE each use a Disconnect the engine spark plug wire or power source cable b Clean and remove all accumulated foreign matter from the wheels and determine that each rotates freely c Clean and remove all accumulated foreign matter from inside the mainframe area d Inspect the V belt drive for proper tension wear and general condition Replace each component as necessary 10 11 OPERATION AND PARTS MANUAL REV 4 05 28 09 e Inspect multi accessory discs gimbal head assemblies for excessive wear and structural integrity Replace each component as necessary The multi accessory discs rotating at high speed during the specific process can be subject to high wear rates if the installed attachment is not properly maintained and or replaced at regular service intervals f Determine that operator controls work freely al safety de
87. n configuration yields a rather coarse surface finish and texture For many job applications this finish and texture will be satisfactory Some applications may require an additional smoothing process If the resulting surface finish is too coarse to meet specifications it can be smoothed with the use of the star or beam flail DFG SERIES SURFACE GRINDERS COST 10 PRODUCTIVITY 8 SERVICE LIFE 10 The pentagonal flail should be replaced when two successive tungsten carbide inserts break off or the inside diameter elongates to approximately 3 4 inch In service the flail body will wear much faster than the tungsten carbide inserts The copper brazing used to weld the inserts into the body can fail and an insert break off The flail can still be used in service It will just wear a little faster and more uneven in that particular area As a general rule a pentagonal flail can be utilized until body wear will no longer support the tungsten carbide inserts Spacer Washer Spacer washers are stamped from high carbon steel and heat treated for additional service life FIGURE 10 e o6 FIGURE 10 Spacer washers serve the following functions 1 Reduces the number of flails required to be mounted on the scarifier block thus reducing purchase and operational costs 2 Arrange the flails in a sequence or pattern that minimize blind or open spots Normally at least one spacer washer is inserted between two consecutiv
88. n products SPECIAL EXPEDITING SERVICE A 35 00 surcharge will be added to the invoice for special handling including bus shipments insured parcel post or in cases where Multiquip must personally deliver the parts to the carrier LIMITATIONS OF SELLER S LIABILITY Multiquip shall not be liable hereunder for damages in excess of the purchase price of the item with respect to which damages are claimed and in no event shall Multiquip be liable for loss of profit or good will or for any other special consequential or incidental damages LIMITATION OF WARRANTIES No warranties express or implied are made in connection with the sale of parts or trade accessories nor as to any engine not manufactured by Multiquip Such warranties made in connection with the sale of new complete units are made exclusively by a statement of warranty packaged with such units and Multiquip neither assumes nor authorizes any person to assume for it any other obligation or liability whatever in connection with the sale of its products Apart from such written statement of warranty there are no warranties express implied or statutory which extend beyond the description of the products on the face hereof Effective February 22 2006 PAGE 78 NOTE PAGE DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 3 07 13 06 PAGE 79 OPERATION AND PARTS MANUAL HERE S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON
89. ns of wear and damage Secure in a proper storage area CAUTION Observe all applicable safety precautions for the solvent 3 Using the 1 2 inch wrenches loosen the engine motor mounting plate cap screws 4 With the same wrenches rotate the engine take up cap screws counterclockwise to loosen the V belts and allow the engine electric motor to slide toward the front of the main frame FIGURE 43 FIGURE 43 5 Remove the V belts Inspect the engine electric motor and transmission pulleys for wear and damage Install the replacement belts P N 29018 012 in pairs The SURFACE GRINDER utilizes two V belts Always install replacement belts in matched pairs Never replace just one of the V belts CAUTION Do not operate the SURFACE GRINDER with only one V belt installed One V belt is not capable of transmitting proper horsepower and torque levels to the multi accessory discs a Do not install replacement belts if the pulleys have excessively worn grooves Such pulleys should be replaced to insure proper belt fit Operating the V belts in worn pulley grooves will accelerate wear reduce horsepower and torque levels significantly reduce component service life b A V belt should never be forced over a pulley More belts are broken from this cause than from actual failure in service C Keep the belts as clean and free of foreign material as possible Do not use belt dressing The centrifugal clut
90. o the back muscles spinal vertebrae and many other body parts Back related pain can be a side effect of utilizing a SURFACE GRINDER An operator with a chronic back related problem or a history of back and or other medically related problems should not attempt to utilize the SURFACE GRINDER Use of the SURFACE GRINDER may only aggravate this and any other medically related problem Because of the diverse type of prevailing job applications job site conditions operator experience levels and operator physical characteristics no warranty guarantee representation and or liability is made by the manufacturer as to the absolute correctness or sufficiency of any operational procedure operational position and or technique There is no absolute guarantee that an operator of any given experience level physical size and or physical condition will be immune to the possibility of and or probable physical side effects of the normal use of the SURFACE GRINDER Each potential operator must be made aware of and assume the operational and physical liability described and or associated with the use of the SURFACE GRINDER Improper use of the SURFACE GRINDER can result in property damage and or personal injury including death Each potential operator not willing to assume the operational and physical liability described and or associated with the use of the SURFACE GRINDER should not operate it Proper levels of operator experience skill and common sense are essential
91. omplete freedom of movement they will not be capable of properly rotating about the scarifier block bushing The result is bushing wear usually confined to two locations that are 180 degrees apart Variances in flail and spacer washer thicknesses affect free play when assembled on the scarifier block Because free play is also created during the scarifying process due to actual flail and spacer DFG SERIES SURFACE GRINDERS washer wear a certain amount of tightness can sometimes be tolerated without affecting the service life of the bushings and flails The specific amount of tightness can usually be determined through trial and error If the flails and spacer washers appear too tight on the scarifier block remove an appropriate flail or washer and reassemble the block a short operational test indicates normal component wear patterns the apparent problem has been solved A general rule for consideration it is better to have the flails and spacer washers a little too loose than a little too tight 2 Mixing both worn and new flails on the scarifier block Proper flail action against the work surface material requires that the flails be of the same approximate dimensions Flails with various inside and outside dimensions will not impact the work surface material with the same intensity and deliver the same results Flail bushing wear is directly proportional to the amount of force it must supply against each individual fla
92. on crew has a bad day and fails to meet the specified overall numbers for the slab the slab can still be accepted provided it meets the specified local numbers Such an occurrence serves as a warning to the crew that it must strive for a better performance on later slabs so as to bring the overall F numbers up to the specified values If a slab fails to meet even the specified local numbers it must be repaired or replaced but such failures seldom occur if all parties understand what is expected from the start Designers are not obligated to use this two tier format Some designers specify a single F number pair Ff and Fl which applies to each individual slab But this also raises the risk that slabs will be rejected FIGURE 40 depicts the overall and minimum F numbers for various floor classes The floor OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 37 ASSEMBLY INSTRUCTIONS OPERATIONS classification is from the American Concrete Institute Although the F number system is only a few years old it offers these advantages a The system controls both flatness and levelness b There is a standard test method c The system recognizes the statistical nature of profile testing on random traffic floors d The system is infinitely variable F F Classifications set forth by ASTM E1155 FLOOR PROFILE MINIMUM F F NUMBER REQUIRED QUALITY CLASSIFICATION SPECIFIED F NUMBERS MINIMUM LOCAL F NUMBERS FLATNESS L
93. or and the machine is to be used immediately reconnect the extension cord or SURFACE GRINDER to the power source Determine that the ON OFF switch located on the operator handle is in the OFF position DANGER UNEXPECTED MACHINE START UP CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY FIGUHE 42 INSTALLING A REPLACEMENT V BELT CENTRIFUGAL CLUTCH OR PULLEY Application As Specified Tools Required 1 each 7 16 wrench 2 each 1 2 wrenches 1 each 9 16 wrench 1 each 5 82 Allen wrench 1 each 16 inch minimum length straightedge 1 each 10 lbs minimum capacity tension scale or belt tension tool 1 each torque wrench 35 ft 108 47 Nm capacity with 7 16 inch and 9 16 inch sockets 1 each belt tension tool Parts Required 2 each V Belt B50 P N 29018 014 1 each Pulley Assembly P N 29018 012 Gas Engine 1 each Pulley Assy P N SFSG240500 Electric 60 Hz 1 each Pulley Assy P N SFSG240510 Electric 50 Hz 1 each Centrifugal Clutch Assembly P N 29018 022 OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 41 MAINTENANCE SERVICE 1 Position the SURFACE GRINDER on a suitable work surface with the V belts approximately at waist level 2 Remove the rubber latches and slide the belt guard away from the engine electric motor until it clears the catch mechanism Remove the belt guard from the main frame Clean the inside of the belt guard with an appropriate solvent Check for sig
94. or operator s to determine that no modifications and or alterations have been made to the SURFACE GHRINDER Modifications and or alterations can lead to the possibility of serious damage injury or even death It is the responsibility of the owner s and or operator s to make this Operator Manual available for consultation during all phases of operation Refer to OSHA 2207 and or applicable updated revisions which contains all OSHA job safety and health rules and regulations 1926 and 1910 covering construction DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 NOTICE TO OPERATORS CAUTION The concept of powered SURFACE GRINDER has been successfully utilized for many years as a practical solution to many types of surface preparation requirements The basic concept is proven and well accepted within the associated marketplaces Use of a SURFACE GRINDER requires strenuous work activity This type of work activity can be considered to be greater in magnitude than that experienced with the use of many other types of both light construction and lawn and garden related equipment This type of work activity should only be attempted by operators of adequate physical size and stature mental awareness and physical strength and condition The body parts most noticeably affected during any specific process are the arms hands wrists shoulders lower back and legs The process can also produce excessive stress strain directly t
95. pe and amount of material to be removed from the work surface Materials of higher yield and tensile strengths along with the actual volume of material to be removed will generally be the first factors under consideration b Purchase cost versus service life The original purchase cost of plain heat treated steel flails must be compared against the substantially higher costs of the tungsten carbide insert flails In turn these costs must be compared to anticipated service life All flails will eventually wear to the point of requiring replacement The amount of unproductive time spent to replace worn flails on a job can be substantially greater than the actual replacement cost of many flails It then becomes a balance between purchase cost productivity service life and labor cost c Surface finish and texture The finest grained surface finish available from the scarifying process is comparable to a swept or broomed like finish If a smooth flat finish is desired the scarifying process must be followed with a grinding or polishing type process Many job requirements may call for large amounts of material to be removed but followed with additional specifications requiring a finer surface finish or texture Many times these jobs dictate the use of an aggressive flail configuration because of productivity and cost considerations Less aggressive flail configurations can then be OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 19
96. ppery conditions and on difficult uneven surfaces Watch for cracks high spots and other surface irregularities Keep proper footing and balance at all times The normal use of this machine is on level surfaces Other terrains can be dangerous and should be avoided Only properly trained operators should attempt these techniques Never start the engine or electric motor with the SURFACE GRINDER directly over cracked uneven or irregular surfaces Start the engine or electric motor according to the instructions as outlined in this manual 10 Contact with a hot engine muffler can cause 11 Clean and property damage and or personal injury Remain clear of a hot engine muffler Do not over speed the engine by altering the governor setting or by disconnecting the engine governor Serious damage to the engine and or personal injury can result remove all accumulated foreign matter from inside the mainframe area after each use This practice will maximize bearing and V belt service life 12 Because this SURFACE GRINDER is classified DFG SERIES SURFACE GRINDERS as a low cost hand held low horsepower portable type machine it is limited in the number of practical and or suitable job applications A particular job site actual surface conditions job specifications and operator skill common sense may dictate that a different type of machine with characteristics of higher purchase cost being mounted to a carrier vehicle w
97. r Date 2 Operator SC Owner Instructor _ Date 2 Operator 2111 Owner Instructor Date NOTE INSERT COPIES OF THIS PAGE WITHIN THE OPERATOR S MANUAL IF SPACE FOR ADDITIONAL OPERATORS IS REQUIRED DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 4 05 28 09 SAFETY PRECAUTIONS DANGER THE FOLLOWING SAFETY PRECAUTIONS PROVIDE SOME COMMON SENSE GUIDES TO PROMOTE SAFETY AND EFFICIENCY WITH THE SURFACE GRINDER NO WARRANTY GUARANTEE OR REPRESENTATION IS MADE BY THE MANUFACTURER AS TO THE ABSOLUTE CORRECTNESS OR SUFFICIENCY OF ANY INFORMATION OR STATEMENT THESE SAFETY PRECAUTIONS ARE INTENDED TO DEAL PRINCIPALLY WITH COMMON PRACTICES AND CONDITIONS ENCOUNTERED IN THE USE OF THE SURFACE GRINDER AND ARE NOT INTENDED TO BE ALL INCLUSIVE PROPER LEVELS OF OPERATOR EXPERIENCE SKILL AND COMMON SENSE ARE ESSENTIAL FOR SAFE AND EFFICIENT OPERATION DANGER THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM THIS STATEMENT IS MADE IN COMPLIANCE TO CALIFORNIA PROPOSITION 65 DANGER INCORRECT USE OF THE SURFACE GRINDER CAN RESULT IN PROPERTY DAMAGE PERSONAL INJURY OR EVEN DEATH TO REDUCE THIS POSSIBILITY GIVE COMPLETE AND UNDIVIDED ATTENTION TO THE JOB AT HAND AND FOLLOW THESE SAFETY PRECAUTIONS PREPARATION 1 This SURFACE GRINDER is specialized type of powered equipment designed for a spec
98. r damage and or personal 1 FOR SPECIFIC INFORMATION injury 5624 5060 SP8 5070 DFG SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV 3 07 13 06 PAGE 76 DECALS DECALS NO PART WP 29020 045 29022 033 29020 048 29022 035 SFSG245020 512910 29020 049 SFSP85070 SFSP8E5HP5020 DFG SERIES SURFACE GRINDERS PART NAME 2 DECAL WARNING DECAL OPERATION DECAL WARNING DECAL WARNING DECAL THROTTLE DECAL MQ LOGO DECAL WARNING DECAL DECAL WARNING TY REMARKS 2 HP MOTOR 60 HZ EE 3 HP MOTOR 50 60 HZ PAGE 77 OPERATION AND PARTS MANUAL REV 3 07 13 06 Effective February 22 2006 TERMS AND CONDITION OF SALE PARTS PAYMENT TERMS Terms of payment for parts are net 30 days FREIGHT POLICY All parts orders will be shipped collect or prepaid with the charges added to the invoice All shipments are F O B point of origin Multiquip s responsibility ceases when a signed manifest has been obtained from the carrier and any claim for shortage or damage must be settled between the consignee and the carrier MINIMUM ORDER The minimum charge for orders from Multiquip is 15 00 net Customers will be asked for instructions regarding handling of orders not meeting this requirement RETURNED GOODS POLICY Return ship
99. red 1 each 3 4 wrench or suitable alternative 1 Using the wrench loosen the 1 2 inch hexagon nuts from the stud assemblies that retain the handle to the main frame 2 Using the wrench remove the 1 2 inch cap screws that retain the handle in position on the main frame DANGER EXERCISE EXTREME CAUTION WHEN REMOVING THE RETAINING CAPSCREWS FROM THE MAIN FRAME WHEN THE FINAL CAPSCREW 15 REMOVED THE HANDLE 15 PROVIDED WITH NO EXTERNAL SUPPORT AND WILL IMMEDIATELY DROP TO THE FLOOR SUCH OCCURRENCE CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 3 Reposition the operator handle in the desired location that aligns the hole in the handle with the threaded hole in the main frame Replace DFG SERIES SURFACE GRINDERS the 1 2 inch hexagon cap screws and properly tighten with the wrench FIGURE 30 4 Using the wrench properly tighten the 1 2 inch hexagon nuts on the stud assemblies that retain the handle to the main frame FIGURE 30 STARTING THE DFG E SERIES ELECTRICALLY POWERED SURFACE GRINDER ON JOBSITE 1 Position the SURFACE GRINDER on a flat and level surface of firm foundation 2 Determine that the ON OFF switch located on the operator handle is in the OFF position DANGER UNEXPECTED MACHINE START UP CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY 3 Select the appropriate operating voltage for the electric motor The motor is designed to operate from a clean 20
100. rface finish texture FIGURE 8 FIGURE 8 Suggested Applications 1 Medium duty asphalt and concrete scarifying 2 Descaling steel decks 3 Removing thick material build ups of greases paints oils vegetable powders and some resins from floors 4 Dried fully cured carpet and tile adhesive removal OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 20 ASSEMBLY INSTRUCTIONS OPERATIONS COST 1 PRODUCTIVITY 5 SERVICE LIFE 2 The beam flail should be replaced when the outside diameter is worn to approximately 1 5 16 inch or the inside diameter elongates to approximately 3 4 inch Pentagonal Flail The pentagonal type flail is manufactured from high carbon steel that is through hardened for additional service life Each section of the five sided design features a small tungsten carbide insert that is held in position with copper brazing It is highly effective for scabbling or scarifying and delivers medium to coarse finish texture FIGURE 9 FIGURE 9 Suggested Applications 1 Heavy duty asphalt and concrete scarifying 2 Heavy duty descaling of steel decks The pentagonal flail is designed for more aggressive and rapid removal of a surface in comparison to the beam flail The addition of the tungsten carbide inserts contributes to its long service life and higher production rates The use of tungsten carbide is also the main reason for the cost differential between it and the other flails The desig
101. s safety program Determine that the SURFACE GRINDER is in its original factory configuration and has not been modified in any manner Many modifications can result in potentially dangerous configurations that can lead to property damage and or personal injury If there are any questions about possible modifications made to the SURFACE GRINDER contact the Customer Service Department for specific information BEFORE utilization There is no charge for this service Do not operate the SURFACE GRINDER without the use of the original equipment V belt guard Use of the SURFACE GRINDER without an approved belt guard can lead to property damage and or personal injury Minors should never be allowed to operate the SURFACE GRINDER Bystanders especially children and animals should not be allowed in the area where the SURFACE GRINDER is in use The grinding process can result in flying particles being emitted at high velocity and striking the operator and or onlookers This can lead to the possibility of property damage and or personal injury Keep all body parts loose clothing foreign objects and onlookers clear of the rotating discs multi accessory attachments and flying particles Operators must be in adequate physical condition mental health and not under the influence of any substance drugs alcohol etc which might impair vision dexterity or judgment Working with the SURFACE GRINDER is strenuous If you have any condition that m
102. source Determine that the ON OFF switch located on the operator handle is in the OFF position DANGER UNEXPECTED MACHINE START UP CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY TRANSPORTING THE SURFACE GRINDER Application Models The SURFACE GRINDER has an operational weight that prohibits one person from loading and or unloading it alone by conventional physical efforts DANGER DFG SERIES SURFACE GRINDERS DO NOT ATTEMPT TO LIFT THE SURFACE GRINDER UP INTO A TRANSPORTATION VEHICLE WITH THE USE OF ONE PERSON ALONE DO NOT ATTEMPT TO LOWER THE SURFACE GRINDER FROM A TRANSPORTATION VEHICLE WITH THE USE OF ONE PERSON ALONE LIFT AND OR LOWER THE SURFACE GRINDER ONLY BY THE USE OF A POWER TAILGATE UNIT A SUITABLE HOIST UNIT OF PROPER CAPACITY AND OR CONFIGURATION OR BY THE USE OF A PROPER QUANTITY OF PERSONNEL IN PROPER PHYSICAL CONDITION 1 A lifting bail device can be used to facilitate lifting by a mechanical device incorporating a chain and suitable attachment device The location of the lifting bail may not always locate the exact position of the center of gravity for the SURFACE GRINDER Lifting handles are also provided on both sides of the transmission case These handles can be utilized by personnel whenever lifting lowering the SURFACE GRINDER or as attachment points for a chain sling whenever a suitable hoisting device is utilized FIGURE 29 DANGER EXERCISE EXTREME CAUTION WHEN UT
103. surrounding the multi accessory discs Secure with cap screws P N 106499 007 and washers P N 29018 090 The original bumper and cap screws can also be utilized as an alternative attachment method The notches in the rubbers skirt are provided as a means to compensate for multi accessory DFG SERIES SURFACE GRINDERS attachment wear if applicable Adjust the location of the rubber skirt to provide the necessary clearance between it and the work surface Improper clearance will accelerate skirt wear FIGURE 2 FIGURE 2 5 OPERATION AND PARTS MANUAL REV 4 05 28 09 Using the 1 2 inch wrenches the rectangular rubber skirt P N 29018 089 is attached to the middle support member of the main frame Proper installation will have the hose attach fitting that is riveted to the skirt facing the rear of the machine The notches in the rubber skirt are provided as a means to compensate for multi accessory attachment wear if applicable Adjust the location of the rubber skirt to provide the same clearance as with the wrap around rubber skirt P N 29018 088 The skirt straps PN 29018 092 provide additional support for the rear skirt assembly Properly secure with the cap screws PN 06500 007 and self locking nuts P N 08233 005 FIGURE 3 PAGE 16 ASSEMBLY INSTRUCTIONS OPERATIONS FIGURE 3 6 Assemble the two each hose clamps P N 14821 012 over the PN 290018 093 vacuum hose Install the vacuum hose over the vacuum hos
104. t wear and contribute to decreased productivity The V belt is tensioned at the factory with the maximum recommended tension force Check the belt tension at least two times during the first day of operation as there will normally be a rapid decrease in belt tension until it has been run in Check the belt tension every eight hours of operation thereafter and maintain tension within the recommended range The correct operating tension for a V belt drive is the lowest tension at which it will not slip under peak load conditions Tools Required 1 each 16 inch minimum length straightedge 1 each 10 lbs minimum capacity tension scale or belt tension tool 1 If the SURFACE GRINDER is powered by an engine disconnect the spark plug wire If powered by an electric motor disconnect the extension cord or SURFACE GRINDER from the power source 2 Position the SURFACE GRINDER on a suitable work bench with the V belts approximately at waist level OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 40 MAINTENANCE SERVICE 3 Remove the rubber latches and slide the belt guard away from the engine electric motor until it clears the catch mechanism Remove the belt guard from the main frame If the SURFACE GRINDER is equipped with a Propane converted engine determine that the Propane cylinder valve is closed before uncoupling the hose Clean the inside of the belt guard with an appropriate solvent Check for signs of wear and damage
105. the transmission and clutch pulleys and tighten as outlined CHECKING V BELT TENSION AND ALIGNMENT OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 43 MAINTENANCE SERVICE REPLACING THE LORD TYPE ELASTOMERIC MOUNTS ON THE MULTI ACCESSORY DISCS Application Models Lord type elastomeric rubber mounts are utilized to allow each multi accessory disc to maintain full contact with the work surface The rubber mounts afford a constant flex rate for each multi accessory disc throughout its service The rubber compound is resistive to the effects of ultraviolet radiation and most common chemicals encountered when operating the SURFACE GRINDER During the manufacturing process the rubber mounts are pressed into specially machined cavities in the disc mounting plates Under normal usage and job applications the Lord type rubber mounts will deliver appropriate performance for the expected service life of the SURFACE GRINDER However an attachment mounted in the multi accessory disc that directly strikes a vertical floor obstruction with sufficient impact force can cause one or more of the mounts to become separated from the mounting plate This occurrence will not allow the multi accessory disc to maintain full contact with the work surface This occurrence is also intended to protect the transmission gears and bearings from costly damage and the operator from an impact force that could cause personal injury
106. thods Levelness is determined mainly by the side forms Defined Versus Random Traffic Patterns Floors are subject to two kinds of traffic patterns defined and random On a defined traffic floor vehicle movement is confined to fixed paths On a random traffic floor vehicles are free to roam though inevitably some traffic patterns are used more than others The distinction is important because the two kinds of traffic demand different methods of measuring surface regularity On a defined traffic floor a continuous or nearly continuous profile in each of the paths can be measured But where traffic is random the possible travel paths are infinite in number What usually results is statistical sampling selected points or lines are checked and assumed that they represent the whole floor surface The highest degree of surface regularity is found among the defined traffic floors Defined traffic floors allow the designer and contractor to focus on a limited number of critical areas When a defined traffic floors is out of tolerance it is relatively easy to identify the defects for correction usually by employing a grinding process How to Define Surface Regularity Since the middle 1980s new methods of defining surface regularity have been adopted as national standards Older methods will continue to be utilized although they are less effective The following methods will be discussed 1 The F number system for random traffic
107. tions again warrant removing the accumulated material STOPPING THE DFG E SERIES ELECTRICALLY POWERED SURFACE GRINDER 1 Stopping the SURFACE GRINDER is accomplished by moving the ON OFF switch located on the operator handle to the OFF position For safety considerations it is also recommended that the extension cord be disconnected from both the SURFACE GRINDER and electric power source whenever the SURFACE GRINDER is not in use on the jobsite STOPPING THE DFG G SERIES GASOLINE POWERED SURFACE GRINDER 1 Stopping the SURFACE GRINDER is accomplished by moving the engine throttle control lever to the idle speed position depicted by the turtle Machines powered by Honda engines can be then stopped by further moving the engine throttle control lever until the ignition system is grounded 2 Machines powered by other engines may utilize a separate ON OFF switch If so equipped turn the switch to the OFF position Consult the material supplied by the engine manufacturer for specific information DFG SERIES SURFACE GRINDERS OPERATIONAL PARAMETERS AND TECHNIQUES FOR THE DFG SERIES SURFACE GRINDER Application All Models Early Age Grinding Early age grinding is an alternative to floating and trowelling It gets it name from the fact that the concrete is ground at an early age after it has set but before it has gained much structural strength The process usually involves the following steps Normal screeding of t
108. tside diameter vacuum tube adaptor located at the rear of the machine An industrial type vacuum system and front shield assembly can be attached to the SURFACE GRINDER to remove control dust and other particle contamination from the work surface hose clamp is sometimes required to properly secure the vacuum hose to the vacuum tube FIGURE 39 FIGURE 39 DFG SERIES SURFACE GRINDERS DANGER ALWAYS UTILIZE A VACUUM SYSTEM DESIGNED TO OPERATE WITHIN THE SPECIFIC JOB SITE REQUIREMENT DUST MATERIAL CAN MEET CLASS II OR CLASS III SPECIFICATIONS OF THE NATIONAL ELECTRIC CODEG FOR HAZARDOUS LOCATION CLASSIFICATIONS CONSIDERATION MUST ALSO BE GIVEN TO THE CREATION OF HAZARDOUS TYPE MATERIALS REQUIRING SPECIFIC DISPOSAL PROCEDURES DETERMINE THAT THE VACUUM SYSTEM IS PROPERLY DESIGNED TO OPERATE WITHIN THESE ATMOSPHERES CONSULT CURRENT NATIONAL ELECTRIC CODEG OSHA AND ENVIRONMENTAL PROTECTION AGENCY REGULATIONS FOR SPECIFIC INFORMATION b Water sand slurry mixture applied directly to the work surface can be an effective method of reducing the effects of grinding and other material removal processes This method can be a productive alternative when removing adhesives containing asbestos A negative effect of this method is that the water sand slurry mixture can be classified as a hazardous material requiring proper disposal procedures 7 Normal usage of the SURFACE GRINDER will alow the build up and accumulation of work
109. vices are operative and information decals are readable g Check to see that the SURFACE GRINDER and all related accessories are in good mechanical condition BEFORE utilization h Reconnect the spark plug wire or power source cable as applicable Contact appropriate representatives to determine if where electrical cables gas lines and other hazardous items are buried under the work surface BEFORE utilization The SURFACE GRINDER and related accessories are not insulated Contact with buried electrical cables gas lines and other hazardous items can result in electrocution and or an explosion Know how the controls operate Know how to stop the engine or electrical motor quickly in an emergency Always start the engine or electric motor according to the instructions as outlined in this manual to minimize the possibility of unexpected contact with the work surface Unexpected contact with the work surface can cause loss of machine control and the possibility of property damage and or personal injury Ground the DFG20E or DFGSOE electrically powered SURFACE GRINDER motors securely Determine that any grounding wire and or device is in fact properly grounding the motor Failure to properly ground the motor may cause an electrical shock and or electrocution resulting in property damage and personal injury including death Electrical wiring and all connections should be performed by a qualified electrician Depending upon
110. wiring configuration the electric motor is designed to operate from either 115 or 230 volt AC power sources Determine that the electric motor voltage switch is properly selected according to the intended and or available power source Operating the electric motor from an improper voltage amperage power source can result in property damage and or personal injury 11 SAFETY PRECAUTIONS 12 13 When operating the DFG20E or DFG30E electrically powered SURFACE GRINDERs on a surface containing water or other electrically conducting liquid special precautions must be taken to minimize the possibility of operator electrocution Once such precaution is to wire and operate the electric motor from a clean 20 Ampere 115 Volt AC power source in conjunction with a ground fault circuit interrupter A GFCI is a safety device that disconnects power from a circuit to a load when a potentially dangerous condition occurs The GFCI opens the circuit when the fault current flow from a power line to a ground exceeds the safe limit for humans The GFCI protects against harmful electrical shock to a person caused by contact with a defective electrical product A GFCI differs from a fuse or circuit breaker A fuse or circuit breaker opens the circuit when the total current flow in the power line exceeds the safe limit of the power line They are designed to protect against fire caused by overheating of the power line Use of
111. y corrected Consult the Customer Service Department for specific information There is no charge for this service OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 32 ASSEMBLY INSTRUCTIONS OPERATIONS DANGER AS SOON AS THE CENTRIFUGAL CLUTCH ASSEMBLY BECOMES ENGAGED THE OPERATOR MUST BE IN A POSITION TO ASSUME DIRECT AND FULL CONTROL OF THE SURFACE GRINDER FAILURE TO ASSUME DIRECT AND FULL CONTROL CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY DANGER DO NOT OPERATE A GASOLINE ENGINE IN CLOSED SPACES WITHOUT PROPER VENTILATION GASOLINE ENGINES PRODUCE CARBON MONOXIDE FUMES BREATHING CARBON MONOXIDE FUMES CAN RESULT IN PROPERTY DAMAGE AND OR PERSONAL INJURY EXCESSIVE LEVELS OF CARBON MONOXIDE CAN CAUSE DEATH 4 Stop the engine in accordance with the instructions as described in the material supplied by the engine manufacturer OPERATING THE SURFACE GRINDER ON THE JOBSITE Application All Models DANGER THE GRINDING PROCESS PRODUCES EXCESSIVE NOISE VIBRATION AND FLYING DEBRIS ALL OPERATORS AND WORK PERSONNEL IN THE VICINITY OF THE SURFACE GRINDER MUST WEAR APPROPRIATE SAFETY EYE WEAR AND HEARING PROTECTION DEVICES OTHER SAFETY APPAREL AND OR PROCEDURES DEEMED NECESSARY BY SUPERVISORY PERSONNEL MUST ALSO BE WORN AND OR PRACTICED BY ALL APPROPRIATE PERSONNEL DANGER EXERCISE EXTREME CAUTION WHEN OPERATING THE SURFACE GRINDER IN THE VICINITY OF DECK INSERTS PIPES COLUMNS OPE
112. yday speech but have important distinctions in floor construction Flatness is defined as planarity or lack of curvature A more simple definition is that a flat floor is smooth and free of bumps and dips An unflat floor is bumpy and wavy Levelness is defined as horizontality or lack of slope A level floor is horizontal A floor that is unlevel is sloped or tilted A floor can be flat but still not level Some floors are specifically designed to be unlevel they can be OPERATION AND PARTS MANUAL REV 4 05 28 09 PAGE 36 ASSEMBLY INSTRUCTIONS OPERATIONS intentionally sloped for drainage considerations Very few if any floors are specifically designed to be unflat Unfortunately many turn out that way Flatness and levelness are both desirable but have different implications for the floor user Flatness is critical where the users main concern is the behavior of wheeled type vehicles Levelness is critical where the user s main concern is with fixed structures such as shelving racks and the placement of machine tools Exceptions exist but for most users flatness is more important than levelness The reasoning is that fixed equipment can be shimmed adjusted to compensate However it is not as easy to adapt a wheeled vehicle to a floor that is not flat enough to allow for proper action Flatness and levelness also have different implications for the floor contractor Flatness is determined mainly by finishing me
113. yles and designs for general maintenance and cleaning projects FIGURE 14 They are especially effective cleaning soiled concrete floors with the addition of water soluble solvents These types of brushes are directly mounted to the multi accessory discs with the included 1 2 inch x 2 inch long Grade 5 capscrews A kidney shaped drive plate is provided on the back side of the brush This drive plate fits into a recess provided in the multi accessory disc FIGURE 15 To maximize bristle service life it is recommended that the silicon impregnated brushes be rotated between multi accessory discs a minimum of once for every one hour of operation FIGURE 14 DFG SERIES SURFACE GRINDERS FIGURE 15 SCRAPE R TACHO Industrial Floor Coatings Removal System This multi accessory attachment is designed to remove many urethanes epoxies paints mastics and other similar material accumulations from concrete floor surfaces FIGURE 16 Each assembly utilizes two tungsten carbide inserts set at a precise angle The rotating inserts cut and shave against the work surface material with a scraping action that removes materials with highly productive results To increase the effectiveness of the inserts the scraper block design incorporates a Lord type rubber mount that helps absorb damaging shocks while allowing the inserts to more easily follow local variations in the surface contour Units are secured to the machine with plastic wedges

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