HV-XXX 850 SERIES OPERATION PARTS - hi
Contents
1. Moisture in Condulet See section 10 DP 2 1 Moisture in Cable Conduit section 10 DP 2 4 13 14 15 Instrument In Calibration Is Not Stable Open in Coax Cable See section 10 DP 2 5 Improper Wiring See Electrical Schematic Insufficient signal from sensing element need longer insertion Set point is beyond the tuning Consult factory Electronic Malfunction See section 10 DP 2 2 Moisture in Condulet See section 10 DP 2 4 Moisture in Conduit Cable section 10 DP 2 5 13 14 19 Instrument Gives False Alarm Improper Calibration See section 10 DP 1 3 Loose wiring See elecrical schematic Blectronic Malfunction See section 10 DP 2 2 Static sparks causing electronic damage Need spark protection circuit consult factory 13 14 19 Instrument Operates Intermittently Improper Calibration See section 10 DP 1 3 Loose wiring See elecrical schematic Blectronic Malfunction See section 10 DP 2 2 Static sparks causing electronic damage Need spark protection circuit consult factory gt C 09 Conveying Hose Worn Through Bleeding in excessive amounts of air somewhere between pickup nozzle and vacuum pump Poor Sealing Between powerhead hopper and doors due to improper seating on damaged gasket Note Some problems listed above may not apply to your equipment Hi VAC amp OPERATIONS PARTS amp SERVICE MANU2. 1 Vac MANUAL SHUTDOWN PROCEDURES A Manual Stopping 1 Remove vacuum intake nozzle from material and allow sufficient time for vacuum hose to clear itself 2 When time permits allow vacuum pump to continue to run with no load free breathing a couple of minutes so that the vacuum has sufficient time to cool down 3 Push Blower Stop Reset button Disconnect Emergency Stop Blower Stop Reset Blower Start Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL OPERATIONS 5 OPERATIONS AUTOMATIC SHUTDOWNS STANDARD The following conditions cause the Hi Vac Unit to shut down automatically HOPPER FULL There is a level detector under the powerhead that extends into the hopper When the hopper is full the unit will shut down and the FULL indicator will light on the control panel This condition is to be reset after the problem is corrected by pressing the BLOWER STOP RESET button on the control panel LOW UTILITY AIR PRESSURE Compressed air is required to clean the filters Without air the filters would quickly become blinded To ensure that air pressure is present or if the air pressure gets too low the unit will shut down and the LOW AIR PRESSURE indicator will light on the control panel This is transient condition and the LOW AIR PRESSURE indicator will turn off on the control panel when proper air pressure is restored Restart t
3. OPERATIONS PARTS 4 SERVICE MANUAL 4 MAINTENANCE MAINTENANCE l I RECOMMENDED LUBRICANTS 1 Positive Displacement Vacuum Pump Blowers Follow the recommendations of the blower manufacturers manual located in the Manufacturers Manuals section 2 Electric Motor Follow the recommendations of the motor manufacturers manual located in the Manufacturers Manuals section 3 Lubricator if applicable ISO VG32 or equivalent Hi VAC OPERATIONS PARTS amp SERVICE MANUAL MAINTENANCE 5 LM C MAINTENANCE i LUBRICATION MAINTENANCE RECORD OWNER PLANT LOCATION BUILDING Hi Vac SERIAL HV l MODEL MAINTENANCE PERFORMED BY DATE RECORD Hi Vac HOUR METER HOURS LUBRICATION OIL DRAINED amp PERFORMED CHANGED OIL ADDED GREASED VACUUM PUMP FILTER REGULATOR N A LUBRICATOR ELECTRIC MOTOR N A N A Hi VAC OPERATIONS PARTS amp SERVICE MANUAL 6 MAINTENANCE PREVENIIVE MAINTENANCE PREVENTIVE MAINTENANCE II I DAILY CHECKS Perform the daily maintenance checks listed below and record on Record Form 1 NOTE It is suggested the Hi Vac unit be started once per every 7 days to prevent rust build up on the vacuum pump lobes and housing A Vacuum Pump Oil Level with machine NOT running 1 Checking the vacuum pump oil level is critical and should be done frequently Some vacuum pumps have oil level sight
4. PRESSURE DIFFERENTIAL OF FILTER BAGS 20 C NO LOAD VACUUM Hg D DUST DISCHARGE E MECHANICAL VACUUM RELIEF VALVE S Hg F COMPRESSED AIR PRESSURE SWITCH G COMPRESSED AIR REGULATOR BOWL CLEAN Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL PREVENTIVE MAINTENANCE 5 LM C PREVENTIVE MAINTENANCE LUBRICATION MAINTENANCE RECORD RECORD FORM 2 WEEKLY OWNER PLANT LOCATION 0IIC C Hi Vac amp SERIAL MAINTENANCE PERFORMED DATE RECORD Hi Vac HOUR METER HOURS CHECKS NEEDS NO MAINTENANCE MAINTENANCE PERFORMED MAINTENANCE NEEDED PERFORMED A ELECTRIC CABLE B LEVEL PROBE VACUUM LEAKS D COMPRESSED AIR LINE LEAKS Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 6 PREVENTIVE MAINTENANCE PREVENTIVE MAINTENANCE II I LUBRICATION MAINTENANCE RECORD RECORD FORM 3 MONTHLY OWNER PLANT LOCATION f Q f f _ BUILDING Hi Vac SERIAL HV L MODEL MAINTENANCE PERFORMED BY DATE RECORD Hi Vac amp HOUR METER HOURS CHECKS NEEDS NO MAINTENANCE MAINTENANCE PERFORMED MAINTENANCE NEEDED PERFORMED A VACUUM PUMP LOBE WEAR B CENTRIFUGAL SEPARATOR C POWERHEAD GASKET Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL PREVENTIVE MAINTENANCE 7 M 4 C PREVENTIVE MAINTENANCE The following are
5. to the low setpoint of 240 F If the discharge air temperature reaches 350 F a second temperature switch located inside the control panel will shut down the unit and the BLOWER HIGH TEMP indicator will light on the control panel This condition is to be reset after the problem is corrected by pressing the BLOWER STOP RESET button on the control panel Note For details on the operation of the High Vacuum part of this option refer to the High Vacuum Vacuum Breaker section located in the Automatic Protection Systems Optional within this manual BROKEN FILTER This unit is equipped with a Broken Bag Detector which contains a set of dust passage filters These filters are installed between the clean side of the filters and the vacuum pump inlet to collect the dust passing through the leaking filters When a sufficient amount of dust is collected on the dust passage filters it will cause an increased resistance to air flow This resistance to air flow is detected by a pressure differential switch and at 20 inches of water pressure difference across the dust passage filters the unit will shut down and the BROKEN FILTER indicator will light on the control panel This condition can only be reset by removing power from the system Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 7 OPERATIONS OPERATIONS l i AUTOMATIC PROTECTION SYSTEMS STANDARD The following conditions can cause serious damage to the
6. OPERATIONS PARTS amp SERVICE MANUAL PREVENTIVE MAINTENANCE 1 M 4 C PREVENTIVE MAINTENANCE DAILY the daily maintenance checks listed below and record on Record Form 1 D Dust Discharge with machine running Inspect the silencer for visible dust in the air stream NOTE Shut the unit off immediately if dust is present Any dust discharge should be corrected immediately to protect the vacuum pump 1 Check filter cartridges for rupture or leaks by raising the lid and looking for any signs of dust on top of the filter cartridges SILENCER under the inside of the domed lid E Mechanical Vacuum Relief Valve with machine running Check vacuum relief valve for proper operation With the machine running in a load condition slowly block off power head inlet until 15 of mercury at sea level is indicated on the vacuum gauge Relief valve should remain closed Continue to block off powerhead inlet while watching vacuum gauge Relief valve should open at 16 of mercury at sea level 1 2 inch Record where valve opens in inches of Hg NOTE Do not check relief valve with hand You will hear the in rush of air when the valve opens NOTE Under no circumstances should the powerhead be used with a valve that opens higher then 16 of mercury F Compressed Air Pressure Switch with machine running REGULATOR With the machine compressed air system full
7. air bleed in sleeve on the nozzle Keep in mind the following A Lots of air little material low vacuum B Little air lots of material high vacuum C No air no material conveyed plugged conveying line Additional nozzle movement in material will be necessary for maximum capacity on materials that are not free flowing Eliminate as many air leaks as possible in conveying hoses For instance replace hoses that are worn through tighten compression type hose couplings for minimum air leakage Keep conveying hoses as straight as possible Eliminate sudden kinks or sharp bends whenever possible The best way to avoid unnecessary bends in the hose is to carry the nozzle end past the work area until the hose is straight then go back to work area Do not convey hot and moist material Steaming may cause moisture to condense on the filter cartridges causing a non releasing cake on the filter cartridges This cake must then be manually removed from the filter cartridges Use the correct nozzle for the work A Bulk nozzle To be used when vacuuming measurable depths of liquids and large piles of material B Round lance nozzle For general clean up and reaching in corners C Flat lance nozzle For vacuuming between and under equipment and into tight places D Flared nozzle For cleaning large areas where materials do not exceed 6 depth Serrated edge for caked materials E Hand brushes For removal of accumulated dust on flat an
8. gauges and others have oil level plugs Refer to the vacuum pump s maintenance manual located in the manufacturer s bulletins section to determine proper oil level requirements If oil is needed see Recommended Lubricants in the Maintenance section NOTE Powerhead must be on level surface to get an accurate Oil Site Plugs level reading B Filter Pressure Differential with machine running With the inlet to your machine open record the reading on the pressure differential gauge in inches water 10 5 7 Load Vacuum with machine running With the inlet completely open check vacuum gauge reading This no load reading is an important indicator of the condition of the powerhead The no load vacuum should be between 1 to 4 inches of Differential Gauge mercury Hg Record vacuum reading in Hg 1 If load vacuum reading is zero 0 a Inspect vacuum gauge plumbing for hose rupture loose fittings or plugged lines b Check that the powerhead is properly seated on the hopper and that there are no leaks 2 If load vacuum reading is higher a Check for obstruction in the machine inlet b Check differential gauge Reading should be between 1 and 7 of water Vacuum Gauge 1 If higher than 10 inches of water a visual inspection should be made or excessive buildup of material on the filter cartridges Hi VAC amp
9. instructions contained herein the equipment will operate reliably and the plant environment will be improved thereby making it a safer and cleaner place to work The Hi Vac in it s simplest form is a large vacuum cleaner A positive displacement pump is used to evacuate the air from the storage bin below the Hi Vac Powerhead Because there is a vacuum in the hopper air enters it through the pick up hose and piping connected to the unit lt is this air movement that conveys the material from the pick up point to the Hi Vac The heart of the system is a positive displacement lobe vacuum pump blower It is driven by a coupler or a Set of v belts and sheaves connected to a drive element which could be an electric motor or a fuel fed engine The blower contains impeller lobes spinning in opposite directions and always in contact of each other and the blower housing While spinning the lobes are capturing small volumes of air and pushing them out of the blower discharge and through an exhaust silencer back into the atmosphere In order to prevent the material and the dust generated by this conveying procedure from being discharged into the atmosphere as well a set of filter cartridges are installed Before the air and material go into the blower they must first pass through these cartridges which remove nearly 10096 of the dust from the air As well as protecting the atmosphere from dust this also stops any dust from entering the blower and ca
10. on the Hi Vac units has a level detection range from approximately 6 inches from the probe tip to a level that applies pressure on the probe tip The level probe sensitivity may need to be adjusted to get the desired level of your particular material in the hopper To adjust the sensitivity refer to the manufacturer s manual Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 3 MAINTENANCE Wo c MAINTENANCE i MAINTENANCE INSTRUCTIONS 1 LUBRICATION INTERVALS A Positive Displacement Vacuum Pumps Blowers 1 Drain oil reservoir and replace with new oil every 500 hours of operation Depending on the model of blower Oil plug may vary in location Check your blower manual for exact location Oil Plug Oil Plug 2 Grease lubricated bearing should have the grease replenished every 500 hours of operation but it should be noted that excessive grease will cause overheating The escape vent must not be allowed to become blocked by solidified grease Depending on the model of blower Grease fittings my vary in location Check blower manual for exact location Grease Fitting Grease Fitting B Electric Motor 1 Follow the recommendations of the motor manufacturer s manual located in the component manual section NOTE Record the performed maintenance on Lubrication Maintenance Record Form Filter Regulator Lubricator If applicable 1 Check oil level in Lubricator and fill when needed
11. 2 850 SERIES PARTS amp SERVICE Hi Vac Corporation 117 Industry Road Marietta Ohio 45750 Corporate Tel 740 374 2306 Toll Free 800 752 2400 Fax 740 374 5447 Web www hi vac com E mail sales hi vac com Lac TABLE OF CONTENTS INSPECTION OF YOUR NEW Hi Vac UNIT WARRANTY INFORMATION FOR YOUR NEW Hi Vac UNIT MESSAGE TO NEW OWNER SECTION 1 SAFETY PRECAUTIONS GENERAL PRECAUTIONS AND WARNINGS PLEASE READ SAFETY FIRST SECTION 2 MACHINE SPECIFICATIONS BASIC DESCRIPTION OF A Hi Vac amp UNIT THEORY OF OPERATION MACHINE COMPONENTS AND PARTS LIST POWERHEAD FILTER RECEIVER HOPPER AIRLIFT RECOMMENDED SPARE PARTS LIST SECTION 3 OPTIONS AS LISTED SECTION 4 INSTALLATION SET UP PROCEDURES SECTION 5 OPERATIONS CONTROL PANEL BREAKDOWN PRESTART PROCEDURES START UP PROCEDURES MANUAL SHUTDOWN AUTOMATIC SHUTDOWNS AUTOMATIC PROTECTION SYSTEMS CONVEYING TIPS AND NOZZLE USAGE ss w w sssi Hi VAC OPERATIONS PARTS amp SERVICE MANUAL 1 Hsc SECTION 6 MAINTENANCE FILTER CARTRIDGE CHANGE PROCEDURES ADJUSTING THE LEVEL PROBE MAINTENANCE INSTRUCTIONS RECOMMENDED LUBRICANTS LUBRICATION MAINTENANCE RECORD BILL OF MATERIALS SECTION 7 PREVENTIVE MAINTENANCE DAILY CHECKS WEEKLY CHECKS MONTHLY CHECKS RECORDS TROUBLESHOOTING SECTION 8 ELECTRICAL CONTROL PANEL SCHEMATIC SECTION 9 ACCESSORIES ACCES
12. AKER Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL OPERATIONS 3 OPERATIONS START UP PROCEDURES A Electric Motor Drive 1 Perform pre start procedures 2 Confirm that vacuum conveying hoses and fittings are connected and pick up nozzle is out of material so that the vacuum pump may breathe freely during startup Note Always connect or disconnect vacuum conveying hoses and nozzles to your Hi Vac inlet or manifold before turning on the powerhead FAILURE TO DO SO COULD RESULT IN INJURY TO OPERATING PERSONNEL 3 Control panel door must be closed and locked 4 Circuit breaker turned on 5 Push Blower Stop Reset button 6 Push Blower Start button Note The blower is turning in the correct rotation if the silencer exhaust cover lifts open and air is discharging from the silencer Note For units supplied with the new Drexelbrook The Point Series Level Probe During initial start up and after a loss of power the operator must wait approx 20 seconds to allow the probe to finish its calibration cycle The blower will not start and the Hopper Full light will remain on until the cycle is complete and the blower Stop T Your Hi Vac is now operating and ready to use Check your gauges to make sure that the unit is running correctly 8 Slowly introduce the pickup nozzle into the material to be conveyed Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 4 OPERATIONS OPERATIONS II
13. AL PREVENTIVE MAINTENANCE 11 ELECTRICAL ACCESSORIES Hi Vac Hi Vac 1 1 Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac 1 1 Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac 1 1 Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac 1 1 Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac 1 Hi Vac 1 1 Hi Vac Hi Vac Hi Vac Hi Vac Hi Vac Li MANUFACIURER S MANUALS
14. HE ORIGINAL PURCHASER AND WHICH Hi Vac CORPORATION S EXAMINATION SHALL DISCLOSE TO ITS SATISFACTION TO BE DEFECTIVE THIS WARRANTY REQUIRES PURCHASER TO OPERATE THE Hi Vac UNIT IN STRICT COMPLIANCE WITH THE PRINTED INSTRUCTIONS AND TO SERVICE THE Hi Vac UNIT ACCORDING TO THE METHODS AND SCHEDULES CONTAINED IN THE Hi Vac UNIT S MANUAL EVIDENCE OF PURCHASER S SCHEDULED MAINTENANCE MUST BE REPORTED IN WRITING TO Hi Vac CORPORATION ON THE FORMS SUPPLIED TO PURCHASER IN THE Hi Va MAINTENANCE MANUAL SHOULD PURCHASER BELIEVE A DEFECT HAS BEEN DISCOVERED THE PURCHASER SHALL RETURN THE ALLEGED DEFECTIVE PART TO Hi Vac CORPORATION FOR EXAMINATION F O B THE Hi Vac PLANT MARIETTA OHIO IN THE EVENT PURCHASER DOES NOT SERVICE AND MAINTAIN THE Hi Vac UNIT ACCORDING TO THE Hi Vac MAINTENANCE MANUAL THE WARRANTY IS TO BE CONSIDERED NULL AND VOID AND Hi Vac CORPORATION S OBLIGATION HEREUNDER SHALL BE DEEMED FULFILLED WARRANTY THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE AND OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF Hi Vac CORPORATION LIMITS OF LIABILITY Hi Vac CORPORATION SHALL NOT BE LIABLE FOR AND PURCHASER ASSUMES RESPONSIBILITY FOR ALL PERSONAL INJURY AND PROPERTY DAMAGE RESULTING FROM THE HANDLING POSSESSION OR USE OF YOUR Hi Vac INDUSTRIAL VACUUM CLEANER BY THE PURCHASER THE LIABILITY OF Hi Vac CORPORATION ARISING OUT OF THE S
15. Hi Vac unit The Hi Vac unit is designed with built in protection from each of the following listed potential hazards by the following means A EXCESSIVELY HIGH VACUUM The Hi VacQ unit is equipped with a spring loaded mechanical vacuum relief valve which is set at a maximum allowable vacuum of 16 inches of mercury hg at sea level When the vacuum reaches this level the spring loaded mechanical vacuum relief valve located on the inlet pipe of the vacuum pump opens and allows air to enter the vacuum pump directly thus relieving the high vacuum condition When the vacuum has gone down sufficiently the valve automatically closes B CLOTH DUST COLLECTOR PROTECTION The Hi VacQ unit is equipped with a differential pressure switch and gauge to measure and limit the pressure drop across the filters and to prevent an overloading of the filters with dust As the dust buildup increases on the dirty air side of the filters so does the resistance to air flow through the filters This resistance will cause a higher static vacuum on the clean side the inner side and a lower static vacuum on the dirty side of the filters This difference is the differential pressure Any dust buildup on the filters which causes 40 inches of water differential pressure is excessive The pressure differential switch is set so that at 40 inches of water the Hi Vac will shut itself off Note For additional details on this operation refer to the High Differential sec
16. NCE the monthly maintenance checks listed below and record on Record Form 3 A Vacuum Pump Lobe Wear BLOWER INLET PIPING Remove the vacuum pump inlet pipe and inspect blower lobes for wear During monthly check wear of vacuum pump lobes it recommended that Liquid Wrench Lubricating amp Penetrating Oil a Radiator Specialty Company product or equal be used to lubricate the vacuum pump lobes and the inside of the vacuum pump housing B Centrifugal Separator Remove end dump hopper or remove side access door fixed hopper and inspect centrifugal separator ring on bottom of your Hi Vac powerhead for signs of wear Replace Before it is worn through C Powerhead Gasket Remove end dump hopper or remove hopper side access door fixed hopper Inspect gasket at bottom of your Hi Vac amp powerhead for positive seal against the hopper and for possible wear Centrifugal Separator Powerhead Gasket Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 4 PREVENTIVE MAINTENANCE PREVENTIVE MAINTENANCE II I LUBRICATION MAINTENANCE RECORD RECORD FORM 1 DAILY OWNER PLANT LOCATION Q BUILDING Hi Vac SERIAL HV __ MODEL MAINTENANCE PERFORMED BY DATE RECORD HiVAC HOUR METER _ HOURS CHECKS NEEDS NO MAINTENANCE MAINTENANCE PERFORMED MAINTENANCE NEEDED PERFORMED A VACUUM PUMP OIL B
17. ROCEDURES Turn filter assembly over and remove hardware securing filter to spool Remove filter spool gasket neoprene washer and discard in responsible way Repeat this with all other cartridges Clean all surfaces of tube sheet and cartridge mounting spools FILTER ASSEMBLY Install new spool gasket Slip new filter cartridge onto spool and ensure that gasket is in proper contact with spool Install new neoprene washer and attach filter to spool using same hardware Inspect cartridge gasket as you tighten to ensure gasket is properly seated Carefully insert each assembly into tube sheet lining up holes on top of spool with studs on tubesheet Be careful not to damage filter doing this SPOOL GASKET Reattach all hardware to secure these assemblies into place NEOPRENE WASHER IN PLACE OR DUST PASSAGE WILL OCCUR CAUSING SEVERE DAMAGE TO BLOWER Swing domed lid over filter housing and lower back down into position The lid does not need to be tightened down as long as it is resting on the gasket OPERATIONS PARTS 4 SERVICE MANUAL 2 MAINTENANCE ADJUSTING THE SENSITIVITY THE LEVEL Every standard Hi Vac comes with a Drexelbrook Level Probe This probe is used for wet or dry applications The sensitivity of the probe may need to be adjusted according to the material that is filling the hopper or if the probe is replaced The Drexelbrook Level Probe used
18. SO COULD RESULT IN INJURY TO OPERATING PERSONNEL 2 Before starting the machine check all fluid levels This includes the vacuum pump oillevels Rear on allunits and shaft end if so equipped Level should be midway on site glass TYPES OF OIL SITE GLASSES 3 Before starting the machine check all wiring for abrasions cuts cracks etc If any repair or replace NOTE BE SURE TO DISCONNECT ALL POWER WHEN REPAIRING ELECTRICAL LINES FAILURE TO DO SO COULD RESULT IN INJURY 4 Before starting the machine check all conduit runs and fittings for defects Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 2 OPERATIONS OPERATIONS II 1 Vac PRESTART PROCEDURES 5 Check electric blower motor for proper rotation as follows Disconnect Emergency Stop Blower Stop Reset Blower Start A While observing the silencer exhaust flap bump electric motor by pushing the Blower Start button and immediately pushing the Blower Stop Reset button If flap rises and air is exhausted from silencer the rotation is correct II If the silencer flap does not move air is being sucked in the rotation is wrong a Correct this by first insuring that incoming power is disconnected then rewire incoming service wire at the top of the circuit breaker NOTE This will correct both the blower motor as well as the optional air compressor if so equipped DO NOT REVERSE ANY WIRES BELOW THE MAIN CIRCUIT BRE
19. SORIES SECTION 10 MANUFACTURER S MANUALS ROOTS BLOWER MANUAL UNITED ELECTRIC SWITCHES DREXELBROOK LEVEL PROBE ENIDINE AIR BAGS LEESON ELECTRIC MOTORS SURE FLEX COUPLINGS SMC FILT REG SEP MARSH GAUGES ASCO SOLENOID VALVES GEMS LEVEL SWITCH DWYER INSTRUMENTS GOYEN TIMER BOARD CONBRACO RELIEF VALVE BARKSDALE VALVE SPAN GAUGES Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 2 All pieces received should be inspected for damage immediately upon receipt INSPECTION PROCEDURES Damage can be most easily detected by looking for scrapes on the paint 2 Inspect all sheet metal and structural steel for damage such as bends kinks or breaks 3 Check all wiring for abrasions cuts cracks etc If any are found repair or replace before connecting to power source Check all conduit runs and fittings for defects 5 Check motor and vacuum pump for free rotation before starting under power for the first time after installation Compare the packing list attached to each piece of each shipment Verify the number of pieces and description of each piece shown on the packing slip REPORT ANY DAMAGE NO MATTER HOW SLIGHT IMMEDIATELY TO Hi Vac Corporation 117 Industry Road Marietta OH 45750 Attention Service Department Phone 740 374 2306 Toll Free 800 752 2400 Fax 740 374 5447 Storage of your Hi Vac unit Allow machine to be crated if at all possible while storing for short or long term durat
20. STALLATIQN II 1 Vac SET UP PROCEDURES After you have done all the inspection procedures as recommended in the beginning of this manual you are now ready to install your Hi Vac unit Please follow the procedures listed in this section If you have any questions please feel free to call Hi Vac at 1 800 752 2400 or in OHIO call 1 740 374 2306 Your Hi Vac unit is broken down into 4 sections Hopper Stand Airlift and Powerhead Once together you can move the unit throughout the plant Be sure that the Airlift is bolted to the stand before operation begins 1 Due to loosening during truck transport retighten 20 ft Ibs the nuts clean and dirty side on flanges holding down each cartridge mounting spool 2 Connect customer supplied power cord as shown in item A This must be done by a certified electrician Note Refer to your electrical schematic for proper voltage specification Note Use National or Local electrical codes to install incoming power to your Hi Vac unit 3 Connect air line to unit as shown in item B Air Requirements are as follows a Airlift mechanism 90 PSI at 1 CFM b Filter Cleaning Regulator 60 PSI at 20 CFM for 820 825 and 830 series units C Filter Cleaning Regulator 60 PSI at 40 CFM for 840 850 and 875 series units Note The Filter Cleaning Regulator is set to 60 PSI at the factory Caution Maximum air pressure should not exceed 120 PSI 4 Remove the three 3 spacers on powerh
21. SULT IN SEVERE INJURY OR DEATH PLEASE REMEMBER Safe operation begins with a safe operator We ask you to be that type of operator Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 2 SAFETY PRECAUTIONS MACHINE SPECIFICATIONS MACHINE SPECIFICATIONS II I BASIC DESCRIPTION OF A 800 SERIES Hi Vac UNIT The MODEL NUMBER is broken down into two descriptive parts 1 The first part is the SHELL SERIES This describes the series of the Hi Vac unit 2 The second part is the HORSEPOWER given to the POWERHEAD There are six different ranges of motors on an 800 SERIES Hi Vac 20HP 25HP 30HP 40HP 50HP and 75HP Hi VAC OPERATIONS PARTS amp SERVICE MANUAL MACHINE SPECIFICATIONS 1 M 4 c MACHINE SPECIFICATIONS I THEORY OF OPERATIONS A SIMPLE NARRATIVE OF HOW A Hi Vac amp WORKS The following pages will describe in as much detail as practical the Hi Vac vacuum system The system consists of four major components The Hi Vac Powerhead which is the actual vacuum producing part of the system is mounted on a hopper The Powerhead and hopper are mounted in a support stand Connected to the Powerhead hopper support stand assembly is a pipe hose used to direct vacuum air flow to material to be conveyed The intent of the system is to pick up spills and dust accumulations through various parts of the Hi Vac and return the materials to the to the plant By carefully reading and following the
22. UPPLYING OF YOUR Hi Vac INDUSTRIAL VACUUM CLEANER OR ITS USE WHETHER ON WARRANTIES OR CLAIM OF NEGLIGENCE OR OTHERWISE SHALL NOT IN ANY CASE EXCEED THE COST OF CORRECTING DEFECTS IN YOUR Hi Vac INDUSTRIAL VACUUM CLEANER AS HEREIN PROVIDED Hi Vac CORPORATION SHALL NOT IN ANY EVENT BE LIABLE FOR ANY LABOR EXPENDED BY THE PURCHASER ON ANY PART OR PARTS OR FOR ANY SPECIAL DIRECT OR INDIRECT OR CONSEQUENTIAL DAMAGES NO MATERIAL MAY BE RETURNED WITHOUT FIRST GETTING APPROVAL FROM Hi Vac CORPORATION ANY GOODS RETURNED WITH SUCH APPROVAL MUST BE SENT BACK WITH ALL TRANSPORTATION CHARGES PREPAID WITHIN 30 DAYS AFTER ISSUANCE OF APPROVAL GOODS RETURNED AND ACCEPTED IN ACCORDANCE WITH THE ABOVE CONDITIONS WILL BE CREDITED ON THE BASIS OF THE PRICES PAID AT TIME OF SHIPMENT Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 4 MESSAGE NEW OWNER I Congratulations on your purchase of a new Hi Vac INDUSTRIAL VACUUM SYSTEM Hi Vac Corporation is a leader in conveying and material pickup The use of a Hi Vac system will not only save you money in the short term it will also put you on the cutting edge of todays technology in vacuum systems With HiVAC s vast array of configurations itis possible to meet every consumers needs in material pickup for both wet and dry appli cations To get the most out of your new Hi Vac INDUSTRIAL VACUUM SYSTEM please read and review the contents of this manual and become familiar with the proc
23. ble dust passage through vacuum pump due to a filter bag rupture or leak will cause premature vacuum pump failure At the first sign of dust being discharged from the HiVAC prompt elimination of the dust passage is necessary EXAMPLE Ifthe HiVAC has been used extensively and a bag rupture is found we recommend changing all filter bags to reduce bag maintenance time Leakage past flap seal Material collecting hopper is full At the bottom of the bag house compartment is a rubber flap seal Visually inspect the rubber flap seal for signs of air leakage wear tears or if it has been pulled in Empty hopper and reset controls by pressing Stop Reset push button Note Some problems listed above may not apply to your equipment Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 10 PREVENTIVE MAINTENANCE PREVENTIVE MAINTENANCE II I PROBLEMS POSSIBLE CAUSES CHECK FOR 13 14 Instrument indicates alarm at all times Coating build up on sensing element HLFS needs longer coat shield Consult factory Sensing element not seeing material LLFS Short in coax cable HLFS See section 10 DP 2 5 Open in the coax cable LLFS See section 10 DP 2 5 Defect in sensing element See section 10 DP 2 5 Loss of power HLFS See electrical schematic Improper wiring See electrical schematic Improper Calibration See section 10 DP 1 3 Electronic Malfunction See section 10 DP 2 2
24. d or irregular surfaces Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 9 OPERATIONS MAINTENANCE MAINTENANCE FILTER CARTRIDGE CHANGING PROCEDURES 1 Disconnect power to main breaker at control panel 2 Disconnect air supply to Hi Vac unit located beside the airlift control valve and bleed off any air pressure that remains in the system Header tanks have air in them because of check valve Drain via petcock 3 Using hand crank at rear of filter housing raise domed lid high enough to clear top of housing Be sure it is high enough to clear the guide so damage does not occur to the support 4 Swing domed lid to the side where it will not interfere with any obstacles 5 Loosen clamps at purge tube housing connections located inside clean air side of filter housing 6 Loosen nuts securing purge pipes at other end T Remove purge pipe assembly saving all hardware for HEADER PIPE PETCOCK later use 8 Remove hardware from flanges holding down each cartridge mounting spool 9 Lift this assembly straight up and out of tube sheet FILTER HOUSING gt 4 4 5 SPOOL FLANGES PURGE PIPES FILTER ASSEMBLY Hi VAC OPERATIONS PARTS amp SERVICE MANUAL MAINTENANCE 1 10 11 12 13 14 15 19 16 17 WARNING CARTRIDGE FILTERS MUST BE TIGHTLY SECURED 18 Wo c MAINTENANCE FILTER CARTRIDGE CHANGING P
25. d with any one of several optional discharges Any thing from rotary feeders and pinch valves for con tinuous discharge to knife gates and fluid powered swing gates for regulated and or remote applications Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 2 MACHINE SPECIFICATIONS MACHINE SPECIFICATIONS POWERHEAD VALVE RELIEF 3 16 HG Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 3 MACHINE SPECIFICATIONS MACHINE SPECIFICATIONS C I FILTER RECEIVER ITEM 6 LOCATED INSIDE FILTER RECEIVER 1 160266 VALVEDIAPHRAGM WE NPT O Ta 2 U4003 0117 VAVESOLRANPROOFARBLASTHOVAG 4 3 O12398 HEADER PIPE PULSER 800 SERIES 2 4 O14569 DOMED LID WELDMENT800 SERIESAZOD omo awurmwomouon 11 200121 FILTER CARTRIDGE SORTES 1 4 200069 FICTER TUBE PRESSURE DIFFERENTIAL Hi VAC OPERATIONS PARTS amp SERVICE MANUAL MACHINE SPECIFICATIONS 4 MACHINE SPECIFICATIONS i Hi VAC amp OPERATIONS PARTS 4 SERVICE MANUAL 5 MACHINE SPECIFICATIONS MACHINE SPECIFICATIONS i RECOMMENDED SPARE PARTS LIST FOR Hi Vac MODEL 850 0 1 5 OPERATIONS PARTS 4 SERVICE MANUAL 6 MACHINE SPECIFICATIONS OPTIONS OPTIONS OPTION 110 END DUMP RESTART OPTION 130 BROKEN FILTER BROKEN BAG DETECTOR INSTALLATION IN
26. e if necessary Offline cleaning without the vacuum pump on can usually rejuvenate the car tridges 7 Low Air Pressure Lights when air pressure drops below 60 PSI and shuts down unit automatically Light Check air pressure and press Blower Stop Reset button Pulse Filter This allows the unit to pulse the filters only when the blower is running AUTO or Selector Switch to pulse the filters all the time manual Blower Start Turns blower on to start vacuum Pushbutton Blower Stop Reset Turns blower off and resets alarms Pushbutton Blower High Temp Lights when the discharge air temperature of the vacuum pump reaches high set Light point Broken Filter Lights when the resistance to air flow is detected by a pressure differential switch Light at 20 inches of water pressure difference across the dust passage filters EB Low Blower Oil Lights when oil level in the blower reaches a low setpoint Light Hi VAC OPERATIONS PARTS amp SERVICE MANUAL OPERATIONS 1 Wo c OPERATIONS PRESTART PROCEDURES As with type of heavy duty equipment caution must be exercised its proper use A thorough understanding of the use and functions of this equipment should be attained before an attempt is made to use it 1 Connect or disconnect vacuum conveying hoses fittings to the machine inlet pipe or manifold system only when the powerhead is off NOTE FAILURE TO DO
27. ead guides Be sure to replace caps on guides and tighten down firmly See item C 5 You are now ready for the Pre start procedures for your new Hi Vac unit Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL INSTALLATION 1 OPERATIONS OPERATIONS II 800 SERIES CONTROL PANEL W OPTIONS BREAKDOWN ITEM DESCRIPTION Filter Differential Shows the operator the differential pressure between the clean and dirty side of Gauge the baghouse This gauge is essentially telling you how dirty the cartridges are and the filter cartridge should never go over 40 of water column 2 HorMetr This displays the period of time that the unit has run Utility Air Gauge A compressed air supply is required to clean the filter cartridges and raise the air lift should never go below 60PSI or the unit will shut down automatically This gauge shows the air pressure in PSI Vacuum Gauge Shows operator the level of vacuum that the system is performing at Under normal operations this gauge will read 12 to 15 Hg At this level the relief valve will open Maximum level is 16 Hg Hopper Full Lights when hopper is full of material This will go out when the hopper is emptied Light and the Blower Stop Reset button is pushed High Differential Lights when the differential reading between the clean side and dirty side of the Light filters is above 40 of Water Column Check the filters and replac
28. edures within Thank you for your purchase and we look forward to serving you again in the future Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 5 SAFETY PRECAUTIONS SAFETY PRECAUTIONS 1 CAUTION SOME DO S AND DON TS BEFORE GETTING STARTED WITH YOUR NEW Hi Vac amp SYSTEM The safety of the operator is of great importance to us at Hi Vac Corporation The decals shields guards and other protective features that are designed into the machine are there for your protection A high percentage of the accidents that occur are due to careless behavior or misuse of machinery We ask you to be a careful operator and to properly service your machine AIRLIFT SAFETY NOTE Airlifts are standard on all units with an end dump hopper Before startup remove the three 3 powerhead shipping spacers and discard This is done by unscrewing the pipe caps slipping off the spacers and reinstalling the three 3 caps on the pipe BE SURE TO REINSTALL THE CAPS BACK ONTO THE PIPE FAILURE TO DO SO MAY CAUSE SERIOUS INJURY TO PERSONNEL AND OR DAMAGE TO MACHINE PROCEED WITH CAUTION Before attempting to operate the machine read carefully and understand all instructions contained in the manual Do not put your hand in front of the intake nozzle while in operation Do not put your face or any portion of head in front of the nozzle Do not open control panel or remove any junction box cover while ma
29. ers requiring them be servieced See servicing instructions for broken bag detector filters Large amounts Usually indicate worn or torn filler bags It is recommended at this time to replace all filter bags reducing bag maintenance time Inspect and correct malfunction Possibly there is something lodged in the valve Inspect hose and free obstruction from hose by raising and impacting heavy part of hose where plugging is probably located on floor while unit is running On more severe cases turn plugged hose section end for end for a reverse air purge through hose Material with clay or other bonding material which has consistancy of mud may build up inside the conveying hose adding more moisture for slurry handling Impact hose on floor as above With HiVAC turned off remove the linear separator door located on top of the powerhead Inspect for and remove any obstruction Low blower speed which reduces the amount of cooling air through blower Usually caused by loose belts Refer to tensioning V belts section in this manual High vacuum caused by operating for long periods of time at vacuums in excess of 16 Hg Check the belt tension and tighten if necessary Should the belt be worn replace all belts with a matched set Refer to tensioning V belts section in this manual The greater the wear the less vacuum achieved and the hotter a vacuum pump will run NOTE IMPORTANT Vacuum Pump Wear Continual visi
30. he unit by pressing the BLOWER START button on the control panel The BLOWER STOP RESET button can be pressed prior to the BLOWER START button however it is not a requirement HIGH DIFFERENTIAL There is a pressure differential switch that will trip when the differential between the clean side and dirty side of the filter cartridges reaches 40 W C The unit will shut down and the HIGH DIFFERENTIAL indicator will light on the control panel If this should occur this means that the filters are not being cleaned sufficiently or need to be replaced Check timer board diaphragm valves and solenoids to make sure that the reverse pulse of air is taking place The interval between pulses should be between 8 and 15 seconds depending on the material being conveyed Timer board is preset to 15 second time intervals at the factory This condition is to be reset after the problem is corrected by pressing the BLOWER STOP RESET button on the control panel Note For additional details on this operation refer to the Cloth Dust Collector Protection section located in the Automatic Protection Systems Standard within this manual Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 6 OPERATIONS ri SHUTDOWNS OPTIONAL The following conditions cause the Hi Vac Unit to shut down automatically Note Check the electrical schematic supplied with your unit to see if any of the following opti
31. in power supply is live Do not vacuum any flammable liquid For mobile configurations check that unit is properly stopped so unit will not tip or roll Do not lubricate adjust or repair the Hi Vac unit unless power source to the electric motor has been disengaged and locked out Keep all safety devices in place while operating your Hi Vac unit Read all warning and instruction decals placed on the machine and its associated equipment Allow only responsible properly instructed individuals to operate the machine Always keep the unit in good operating condition Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL SAFETY PRECAUTIONS I SAFETY PRECAUTIONS Clear the work area of objects that might interfere with proper operation of the Hi Vac unit careful to avoid overhead electrical installations Extreme caution should be exercised whenever working near or around electrical installations Do not operate the Hi Vac unit while wearing loose clothing watches or rings Periodically check for bolts set screws NOTE AS WITH ANY TYPE OF HEAVY DUTY EQUIPMENT CAUTION MUST BE EXERCISED IN ITS PROPER USE CAUTION KEEP HANDS CLEAR AND AWAY FROM BETWEEN POWERHEAD AND HOPPER WHEN POWERHEAD IS RAISED AND WHEN LOWERING POWERHEAD WARNING FAILURE TO COMPLY WITHANY OF THEABOVE SAFETY INSTRUCTIONS OR THOSE THAT FOLLOW WITHIN THIS MANUAL MAY RE
32. ions 1 For short term storage 30 days or less A Rotate shafts every two to three weeks to avoid flat spotting of the ball bearings 2 For storage over 30 days A To prevent damage due to corrosion oxidation etc Refer to the maintenance manuals for each component B Make sure that the inlets to the piping manifold system are covered with the dust plugs to prevent foreign objects from entering the system C Add packages of desiccant to all electrical enclosures on sides of Hi Vac D Turn off the compressed air supply to the Hi Vac and relieve any pressure in the compressed air lines on the unit Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 3 ri CORPORATION WARRANTS THE ORIGINAL PURCHASER THE Hi Vac UNIT QUOTED HEREIN THAT THE Hi Vac UNIT SHALL BE FREE FROM DEFECTS IN MATERIAL AND WORKMANSHIP UNDER NORMAL USE AND SERVICE Hi Vac CORPORATION DOES NOT WARRANT COMMERCIAL ITEMS MANUFACTURED BY OTHERS SUCH AS DIESEL ENGINES TRUCK CHASSIS TIRES OR MOTORS IN ADDITION Hi Vac amp CORPORATION DOES WARRANT THE REPLACEMENT OF ANY OF ITS PRODUCTS OR COMPONENTS AS A RESULT OF FAILURE DUE TO CORROSION Hi Vac CORPORATION S OBLIGATION UNDER THIS WARRANTY SHALL BE LIMITED TO THE REPAIR OR EXCHANGE OF ANY PART OR PARTS WHICH MAY PROVE DEFECTIVE UNDER NORMAL USE AND SERVICE WITHIN THE SHORTER PERIOD OF TWO 2 YEARS OR FOUR THOUSAND 4 000 WORK HOURS FROM THE DATE OF DELIVERY TO T
33. ons apply HIGH BLOWER TEMPERATURE There is a high temperature sensing thermal switch and gauge located on the side of the control panel The thermal switch sensor is located in the discharge pipe of the vacuum pump When the discharge air temperature reaches 350 the unit will shut down and the BLOWER HIGH indicator will light on the control panel This condition is to be reset after the problem is corrected by pressing the BLOWER STOP RESET button on the control panel LOW OIL LEVEL IN THE GEAR CASE S OF THE VACUUM PUMP There is a low oil level float switch s installed near the vacuum pump Daily checks of the oil level by visually inspecting the oil level sight glass s on the vacuum pump will prevent a low oil condition Do not use level switches to check oil level In the event a loss of oil occurs during operation the unit will shut down and the BLOWER LOW OIL indicator will light on the control panel This condition is to be reset after the problem is corrected by pressing the BLOWER STOP RESET button on the control panel HIGH TEMPERATURE VACUUM BREAKER There is a high temperature sensing thermal switch and gauge located on the side of the control panel The thermal switch sensor is located in the discharge pipe of the vacuum pump When the discharge air temperature reaches 340 F a compressed air operated butterfly valve located on the Filter Receiver opens allowing the air temperature to return
34. ows Blower Oil Level Low If the oil level in the blower drops to a critical level Dirty Filter Bags During operation whenever pressure differential across bags reaches 20 water column the HiVAC will shut down and shake bags then restart This is a normal operation If this occurs too frequently If the high pressure dirty side of the filter bags is broken you will have excessive shutdown bag shake cycles If these lines are crimped no air passage you may never shut down on dirty bags If the low pressure clean side of the filter bags is broken the pressure differential gauge will read 0 and a bag shaking cycle will not be initiated when the pressure difference across the bags reaches 20 H O Oil level is at proper level in sight glass of blower Oil level switch is at porper adjustment the oil level in the switch should be approximately 1 4 below the top inside of the switch itself and even with the sight glasses of the blower if filled to proper level Pool of oil below blower indicates external leakage Repair as required No sign of external leak certain amount of oil will be lost naturally and if left unattended will eventually cause the switch to trip If the unit shuts down frequently because of this it is possible that there is an internal leak in the blower Refer to the blower manual for proper correctiive action Check for Blower Oil Level indication Check for Blower Tem
35. perature high indication Check for one of the high material level indicators Chck for Dust Passage indication Cake on filter bags caused by conveying hot moist material Do not convey Hot Moist material Replacement of bags is necessary see bag change procedures Impregnation of material is common after prolonged use of the HiVAC This is material absorbed into the fabric which will not shake out Replacement of bags is necessary see bag change procedures Hole or broken line in the differential tubing on the dirty side Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL PREVENTIVE MAINTENANCE 9 H ac PROBLEMS POSSIBLE CAUSES 7 12 Broken bag Detector dust passage Indicating filter bag starting to leak 8 17 18 Vacuum Relief Valve Jammed In Closed Position 8 17 18 Obstruction in the conveying hose Obstruction in linear separator Blower Temperature High air discharged by the blower gets above 350 degrees F Slipping of V belts Worn Vacuum Pump Lobes or Housing PREVENTIVE MAINTENANCE CHECK FOR Small amount of leakage May be stopped by retightening the hold down retainers on top of bags Broken bag detector filter must be serviced See servicing instructions for broken bag detector filters No amount of leakage observed There will always be a certain amount of leakage regardless of bag condition After a time this will collect on broken bag detector filt
36. some problems which arise and ways to correct them 6 BLOWER Drive motor overloads tripped 7 BLOWER Not starting 9 FILTER CARTRIDGE Dirty 11 FILTER CARTRIDGE Holes in 13 HOPPER Bottom LED is lit 15 ROTARY AIRLOCK Drive motor overloads tripped 16 SCREW CONVEYOR Drive motor overloads tripped 17 VACUUM Continuous high 18 VACUUM Sudden loss of 19 Hi Vac Unit will not shut down when hopper is full 20 Control panel circuit breaker blows immediately when Blower Start button is pressed Note Some problems listed above may not apply to your equipment OPERATIONS PARTS 4 SERVICE MANUAL 8 PREVENTIVE MAINTENANCE PREVENTIVE MAINTENANCE PROBLEMS POSSIBLE CAUSES Bag Shaker Motor Overloads tripped Excessive current draw in shaker motors due to malfunction in system Fi CHECK FOR Drive Mechanism binding or misalignment Gearbox lubrication Rod end bearing lubrication NOTE If tripped they must be reset inside the control panel Remember the bags should shake each time the HiVAC is shut down either manually or automatically 7 8 10 17 18 Note Some problems listed above may apply to your equipment Broken Differential Pressure Line the black plastic tubing If the black plastic tubing is damaged in any way Le cracked crimped melted and colapsed or torn out of a connector false readings generally are as foll
37. tion located in the Automatic Shutdowns Standard within this manual AUTOMATIC PROTECTION SYSTEMS OPTIONAL A HIGH VACUUM VACUUM BREAKER A compressed air operated butterfly valve located on the Filter receiver opens when the operating vacuum reaches the high set point and closes when the operating vacuum is relieved to the low setpoint Note For details on the operation of the HighTemperature part of this option refer to the High Temperature Vacuum Breaker section located in the Automatic Shutdowns Optional within this manual Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL OPERATIONS 8 OPERATIONS MATERIAL CONVEYING TIPS The Hi Vac should always be operated with one of the nozzles furnished For heavy bulk material pick up air must always be bled in with material for conveying through hose Hose dead head pick up of material piles without our nozzle should be avoided because hose overloading will occur causing the conveying hose and or pipe to become plugged For maximum bulk pick up rate bury the end of the bulk nozzle into the material pile Material an conveying air will automatically be drawn into the nozzle For peak capacity the Hi Vac vacuum pump should operate between 13 Hg and 15 Hg as shown on the vacuum gauge located on the control panel Any extra vacuum capability should be reserved to take care of sudden material surges into the nozzle The vacuum is adjustable by means of the
38. using serious damage There is one stage of separation of the material and dust from the air before they get to the filter cartridges As the material enters the Hi Vac from the pickup hose and piping system it goes through a centrifugal separator which spins the material out of the air stream and into the collection bin below the Powerhead Any material left in the air is then carried to the filter cartridges As the air passes through the filter cartridges the dust is trapped on the outside of the cartridges Every 10 to 15 seconds compressed air is blasted into the inside of the cartridges This pulse of air keeps the outside of the cartridges clean There are several different types of material bins all of which will eventually fill with material When this occurs the unit will shut down and cannot be restarted until this condition is corrected In some cases as with end dump and rear dump hoppers the Powerhead will be lifted off of the hopper with an airlift The hopper will then be taken by a fork lift to a location to be emptied then replaced below the Powerhead In this case the Powerhead must be restarted manually In other cases as with bottom dump hoppers it may have a self dumping discharge gate In this situation the unit will shut down momentarily discharge the material the gate will close and the unit will restart automatically there is a switch in the panel to override this auto restart This self dumping gate may be replace
39. y charged Close off supply of compressed air Slowly bleed off compressed air until Low Air Pressure light comes on and record the reading on the gauge mounted on the compressed air regulator This reading should be approximately 60 PSI G Compressed Air Regulator Filter Bowl with machine running Inspect regulator filter bowl sight glass and empty if partially full Refer to regulator instructions located in the Manufacturer s Bulletins section of this manual FILTER BOWL Hi VAC amp OPERATIONS PARTS amp SERVICE MANUAL 2 PREVENTIVE MAINTENANCE PREVENTIVE MAINTENANCE II I WEEKLY CHECKS Perform the weekly maintenance checks listed below and record on Record Form 2 A Electric Cable Visually inspect all electrical conduit cables and connections for signs of abrasions or breaks B Level Probe Check level probe for operation by touching the probe Control panel must be on with the blower OFF The Hopper Full light will turn on on the control panel C Vacuum Leaks Level Probe Inspect all openings for possible damage to gaskets With machine running listen for audible leaks around doors hose connections flanges etc and repair as required D Compressed Air Line Leaks Check for audible leaks in the compressed air lines Re tighten fittings or repair as required Hi VAC OPERATIONS PARTS amp SERVICE MANUAL PREVENTIVE MAINTENANCE 3 M 4 C PREVENTIVE MAINTENA
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