WD20 Walk-Behind Floor Scrubber User Manual
Contents
1. 6 SS 6 Charge Status Indicator anas ene eenenennnsrer rens enrennnnennerreennnenreennnnnnnrnennn sene ennnnenn 6 Optional OUI Metel En 7 az 7 Baten Compartine M 7 Diagnostic Code Guide ann annnnennnnenseenn eere ennnennnnensersn enen ennnnnnnnenensnnenevennennnsensennnenen 8 Handie eb rg 8 Angle ACS WMS 8 a ee eee 9 Solution Tank Drain 9 Solution Level 9 10 Screened Float 10 Screened Float 10 In Line Solution Filter Assembly 11 Rear Squeegee 11 Cleaning 11 Changing the Squeegee Blades ccccccccccccssseeeeceeceeeeeeeeaueeseeeeeeeeeeeeeseaeaeeeseeeeeeeeeeessaaaas 11 Adjusting the Squeegee Blades nonnen eenenennnsnsereneneeeenennnnnenseerssenvennennnnnenn 12 Angle Adjustment 12 Adjusting the Squeegee Blades nnee eeneennnnsnserrn2. User Manual Floor Scrubber Traction Drive www bulldogscrubbers com 877 292 3935 This manual is furnished with each new Floor Scrubber This provides the necessary operating and preventive maintenance instructions Operators must read and understand this manual before operating or servicing this machine This machine was designed to give you excellent performance and efficiency For best results and minimal cost please follow the general guidelines below Operate the machine with reasonable care Follow the manufacturer s suggested maintenance instructions as provided in this booklet Use original manufacturer supplied parts 21 3 54 1 42 3 107 4 96 5 z 5 een Ll L en mm 10 0 25 4 47 4 120 4 in cm Technical Specifications Model Floor Scrubber Traction Drive Model No WD20 Current Max 40 amps Battery Capacity Lead Acid 140Ah 20 hr Battery Capacity Gel 95Ah 20 hr Sound Level 69 dBA Cleaning path width 20 in 51 cm Squeegee width 34 in 86 cm Productivity Traction Drive 27 280 ft hr 2 534 Working speed Traction Drive 3 1 mph 5 km hr Transport Speed 3 mph 4 8 km hr Rated voltage 24 volts Vacuum flow 65 cfm 110 m3 hr Vacuum water lift 45 inches 112mbar Vacuum power 60 HP 450 W Brush type Disc Brush motor s power 3 4 HP 560W Number of brushes 1 Brus
3. NOTE Refer to the Service Manual for more detail on maintenance and service repairs Regularly scheduled lubrication of certain machine parts should be performed to insure trouble free operation of the machine Apply a generous amount of grease into the fittings on the rear caster swivel 2 until grease seeps out around the bearings Apply lubricant or light machine oil to lubricate the e Pivot mounting point of the rear squeegee to the chassis 1 e Rear squeegee caster wheel axle 2 Troubleshooting Recovery hose to squeegee or recovery tank Reconnect or replace recovery hose disconnected damaged Squeegee is down and directional switch is in Raise squeegee when in reverse mode reverse position Bail handle depressed too quickly after turning Turn key off turn on wait until battery gauge key on lights up without flashing Recovery tank full Empty recovery tank Empty recovery tank rinse off the screened float inside recovery tank Use less or change chemical Use defoaming agent Foot pedal not in the home position Excessive foam in recovery tank Troubleshooting Charger Warning Indicators LED status Description RED LED lamp blinks Output open circuit or short circuit or reverse polarity connection of charger to Warning once battery Battery voltage is too high may be connected to wrong voltage battery RED LED lamp blinks Abnormal cycle may be weak or bad battery Charging time has safety timed tw
4. SOLUTION CONTROL LEVER RECOVERY TANK DRAIN HOSE ONBOARD CHARGER CORD CIRCUIT BREAKERS moov Dp FAC TIGO Machine Overview Control Panel BAIL HANDLE HANDLE ADJUSTMENT KNOB KEY SWITCH DIRECTION SWITCH SQUEEGEE LIFT LEVER SOLUTION CONTROL LEVER BATTERY FAULT GAUGE SPEED CONTROL CHARGE STATUS INDICATOR 0 gt Bail Handle A When the scrub deck is lowered to the floor the bail handle enables the brush motor and moves the machine forward once depressed This also allows the operator to automatically load the brush when the scrub deck is lowered Handle Adjustment Knobs B Allows the handle position to be raised or lowered Key Switch C Controls the machine s power Brush Unload Off On with a key for safety This switch when turned counter clockwise operates the auto brush unload when scrub deck is in the raised position When it is turned to the on position the machine will operate Direction Switch D This switch sets the direction the machine will move when the bail handle is pulled Squeegee Lift Lever E When actuated to the top position the squeegee is lowered and the vacuum motor is turned on When locked in the bottom position the squeegee is raised and the vacuum motor shuts off after 10 second delay Solution Control Lever F This lever controls the rate at which solution is released Moving the lever up will increase the amount of solution Moving the lever down will dec
5. B blocks the vacuum intake inside the tank protecting the vacuum motor and internal electronics from water damage It is essential to keep the float in working order through regular maintenance The float should be cleaned daily by thoroughly rinsing with hose Removal of the screened float is not necessary for daily maintenance At least once a month the screened float should be completely removed cleaned and checked for any damage to the seal or metal screen WARNING Damage to the machine may occur if operated without the screened float properly in place Screened Float Removal The screened float is positioned between the vacuum manifold A and recovery tank C The screened float B can be accessed by removing the 1 5 bolt D and two 1 25 bolts E that attach the manifold to the recovery tank using a 7 16 socket Vacuum Manifold Screened Float Recovery Tank 1 5 Bolt 1 25 Bolt 2 Helical Washer 3 Flat Washer 3 11 Machine Overview In Line Solution Filter Assembly The solution solenoid which shuts off solution flow when the bail handle is released is protected from debris by the in line filter assembly The filter assembly is located at the rear of the machine on the left hand side just under the solution tank It is important to check and clean the screened washer inside the assembly regularly to ensure proper solution flow To open unscrew the assembly Note tha
6. enereneennnnnsnseersvervennennnnnenn 12 Height Adjustment 12 0 14 1 1 92113 Neenee een 15 TO KU 15 To Turn on WC UNS EEE 15 9 15 Turn on Cleaning Solution 15 E 15 Speed control 15 BE 15 Charge Batteries nnn onnnn neer eennnnensserneneneerenennnnnsrrnsenerenenennnanserrnsnneeveesnnnnennen 15 SENO EE Ene 15 Hour Meter Optional 15 Eas 16 Unloading 16 ANET USO mesen e EE 17 17 ise ee a te aes 18 Safety Instructions IMPORTANT SAFETY INSTRUCTIONS Operators must read and understand this manual before operating or maintaining this machine Do not operate this machine in
7. flammable or explosive areas This machine is designed solely for scrubbing dirt and dust in an indoor environment The manufacturer does not recommend using this machine in any other capacity The following information below may cause a potential hazard to the operator and equipment Read this manual carefully and be aware when these conditions can exist Take necessary steps to locate all safety devices on the machine and train the personnel operating the machine Report any machine damage or faulty operation immediately Do not use machine if it is not in proper operating condition FOR SAFETY DURING OPERATION Keep hands and feet clear of moving parts while machine is in operation Make sure all safety devices are in place and operate properly All covers doors and latches must be closed and fastened before use During operation attention should be paid to other persons in the work area and especially if small children are present Electric motors and components can cause an explosion when operated near explosive materials or vapor Do not operate this machine near flammable materials such as solvents thinners fuels grain dust etc Store or park this machine on a level surface only To prevent unauthorized use machine should be stored or parked with the key removed This machine is designed for level operation only Do not operate on ramps or inclines greater than 2 This machine 18 not suitable for picking up hazardous dusts Use caution w
8. gned to operate on 24 volts DC 2 12 volt batteries Batteries The recommended batteries are rated 140Ah WET Manufacturer s P N 956140 or 100Ah Maintenance Free GEL Manufacturer s P N 956100 We do not recommend mixing AMP hour capacities Alternate battery sets can be used if they equal physical size and capacity If alternate battery sets are used please contact the manufacturer for on board charger settings Operator Responsibility Read this manual carefully before operating this machine The operator is responsible for taking care of the daily maintenance and check ups of the machine to keep it in good working condition The operator must inform the service mechanic or supervisor when the scheduled maintenance intervals are required as stated in the MAINTENANCE section of this manual Before starting familiarize yourself with the machine and its controls see Machine Overview Front Machine 23 Overview Rear Control Console diagrams Machine Overview Machine Overview Front CUP HOLDER SOLUTION FILL PORT RECOVERY TANK LID RECOVERY TANK BRUSH DECK FRONT WHEEL REAR CASTER SOLUTION TANK FLOATING DECK SKIRT eromoonp NOTE FRONT TIRES ARE FOAM FILLED TO BE MAINTENANCE FREE NO AIR CAN BE ADDED Machine Overview Rear RECOVERY HOSE CONTROL PANEL SOLUTION TANK DRAIN HOSE LEVEL INDICATOR BRUSH LIFT PEDAL REAR SQUEEGEE DIAGNOSTIC CODE GUIDE BAIL HANDLE SQUEEGEE LIFT LEVER
9. h RPM 180 RPM Aqua Stop equipped Coming Soon Solution capacity 12 Gal 45 liters Recovery capacity 13 Gal 49 liters Working Grade 2 Weight with batteries 372 lbs 169 kg Weight without batteries 238 lbs 108 kg Dimensions LxWxH 47 4 x 21 3 x 42 3 120 4 x 54 1 107 4 cm Drive Motor Power 1 5 HP 150W Table Of Contents Technical 2 9 4 IMPORTANT SAFETY INSTRUCTIONS 4 FOR SAFETY DURING OPERATION 4 FOR SAFETY WHEN SERVICING MAINTAINING MACHINE 4 Gapa kna TS WIG ile EA EErEE 4 MAS EEE 4 BNC WC 4 DANCE 4 Operator SSD ONS 4 Machine VCE VOW 2 websted 8 Machine Overview 8 Machine Overview R Aal ccccccccccccecsssesseeceeeeeeesseaeeeeeseceeeeeeessaeaeeseceeeeeeeeesesaeeeaeeeeeeeeetessaeaaas 8 Control FP AS 6 Bail Handle EEE EEE EEEN 6 Handle Adjustment Knobs 2 2 6 KE 6 6 Squeegee Lift Lever 6 Control LEVET 6 Battery Fault Gauge
10. harging batteries generate explosive gasses DO NOT CHARGE BATTERIES WHEN OPEN FLAMES OR SPARKS ARE PRESENT DO NOT SMOKE Charge the batteries in a well ventilated area Fluid levels should be checked before and after charging and maintained at the proper levels If low add distilled water until the metal plates are covered If the machine is not used for an extended period of time batteries should be kept fully charged with a boost charge once a week Check for wire string or twine wrapped around the scrub brushes Check the rear squeegee for wear and damage Check the rear squeegee suction hose for obstructions Drain and clean the recovery tank Check under the machine for leaks Check the service records to determine maintenance requirements WARNING Be sure you understand the machine controls and their functions While on ramps or inclines avoid sudden stops when tanks are filled Avoid abrupt sharp turns Slow down driving speed when going downhill 15 Machine Operation To Turn on Machine Turn key to operate position 1 Wait for battery gauge to stop flashing If flashing continues see troubleshooting guide To Turn on Vacuum Lower squeegee into operating position vacuum motor will turn on automatically To Turn on Brush Motor Lower the scrub deck to the floor by moving the brush lift pedal from the home down position to the operating position up Depress the operator bail handle Br
11. he brush motor is turned on The solution lever must be moved to the desired operating position but does not need to be moved to the closed position when stopping for brief periods Hour Meter Optional Hour meter will automatically record operating time of the brush motor Machine Operation Loading Brush ow rz fn S Ki p Li nd J i 1 To load the brush first center the 2 Lower the scrub deck by releasing With the key turned on pull the Floor Scrubber brush deck over the deck lift pedal bail handle to engage the scrub the scrub brush brush onto the scrub deck nn Unloading Brush UNLOAD 1 To unload the brush first lift the 2 Momentarily turn the key 1 to 2 3 When done correctly the brush scrub deck by pressing down on seconds to the Brush Unload should release from the scrub the deck lift pedal Make sure position then let the key return to deck and fall to the floor the pedal is in the home posi the off O position tion shown below CAUTION Make sure scrub deck is clear of all personnel and obstructions before operating Brush Unload 16 17 After Use After Use 18 gt When finished scrubbing lift the scrub deck and turn the solution lever off Lift the rear squeegee the vacuum motor will turn off after 10 seconds Move the machine to a service area for da
12. hen moving this machine into areas that are below freezing temperatures Any water in the tanks or hoses can cause damage to the machine FOR SAFETY WHEN SERVICING or MAINTAINING MACHINE Stop on level surface Disconnect the power to the machine by unplugging the red Battery connector located under the recovery tank near the batteries Avoid moving parts Do not wear loose jackets shirts or sleeves when working on machine Avoid contact with battery acid Battery acid can cause burns When working on or around batteries wear protective clothing and safety glasses Remove metal jewelry Do not lay tools or metal objects on top of batteries Charging batteries generates explosive gasses Do not charge batteries when open flames or sparks are present Do not smoke Make sure the charger is turned off before disconnecting it from the machine Charge the batteries in a well ventilated area with the battery cover removed completely Do not clean machine with a pressure washer Authorized personnel must perform repairs and maintenance Use manufacturer supplied replacement parts SAVE THESE INSTRUCTIONS Inspection Carefully unpack and inspect your Floor Scrubber for shipping damage Follow unpacking instructions on shipping pallet Each unit has been tested and thoroughly inspected before shipment Any damage is the responsibility of the delivery carrier who should be notified immediately Electrical This machine is battery operated and desi
13. ice out due to battery problem Fault Diagnostic Codes The Battery Fault gauge will flash when a fault is detected A decal labeled Diagnostic Codes is located below the battery gauge as an abbreviated and convenient guide to determine the cause of the fault and the remedy refer to machine or see Diagnostic Code Guide section of this manual The flashing codes are for the following The battery needs charging 1 Bar there is a bad connection to the battery or dependent on programming may indicate that the battery lockout function is active and the controller is ina restricted mode of operation Check the connections to the battery If the connections are good try charging the battery There is a bad connection to the 2 Bar motor Check all connections between the motor and the EE controller The motor has a short circuit to a battery connection Contact your service agent The bail handle was activated prior to turning the machine on Make sure that the bail handle is in the rest position Restart the key switch A controller fault is indicated Make sure that all connections are secure Not used The battery charge level has fallen below the Battery Lockout level and the controller is inhibiting certain machine functions Charge the battery An excessive voltage has been applied to the controller This is usually caused by a poor battery connection Check the battery connections No
14. ily maintenance and review items that may need service Empty the solution tank by disconnecting the solution tank drain hose from the barb fitting and routing hose to a drain Rinse the tank with clean water to prevent any buildup of dried chemicals that could clog the plumbing Empty and clean the recovery tank by flushing with a hose Be sure to also clean the float shut off screen Remove the brush or pad holder and rinse them in warm water and hang to dry Remove the rear squeegee rinse with warm water and reinstall after cleaning Check the maintenance schedule in the next section and perform any required maintenance before storing the machine Store the machine indoors in a clean dry place Keep from freezing Leave solution and recovery tank lids open for ventilation to prevent odor buildup Turn Key switch OFF and remove key Maintenance Weekly Monthly Charge Batteries Check Each Battery Lubrication Grease Check Carbon Brushes Cell s Water Level Fittings Check Clean Tanks and Check Clean Brush Hoses Deck Skirt Check Clean the Brush Check Clean In line and Pad Solution Filter Check Clean the Squeegee Check Clean Vacuum Shut Off Float in Recovery Tank Have a qualified service technician check the vacuum motor carbon motor brushes once a year or after 300 operating hours The brush motor and transaxle motor carbon brushes should be checked every 500 hours or once a year
15. just the squeegee using the adjusting screw so that the ends of the squeegee blades still have contact with the floor By turning the adjusting screw A counterclockwise the clearance between squeegee blade and floor is increased in the center Fig 1 When turning the adjusting screw A clockwise the clearance between squeegee blade and floor is reduced in the center Fig 2 3 Switch the machine on and check the suction pattern When the machine is in operation the entire surface of the squeegee blades center and outer areas must be applied as evenly as possible 4 Tighten the lower wing nut B on the adjusting screw A against the metal bracket to lock in the pitch setting Adjusting the Squeegee Blades Height Adjustment streaks are present despite an optimum angle adjustment the clearance between the caster wheels and floor must be adjusted by changing the number of washers underneath the bracket that holds the wheel The squeegee height is preset at the factory to 3mm In cases of very smooth floors e g finished floors PVC linoleum etc see 2mm illustration for washer configuration In cases of very uneven floors e g poorly laid tiles water does not run off configure as shown in 4mm illustration Keep the extra washers by iS installing them above the bracket as shown 13 Machine Overview Recovery Tank Drain Hose Twist Lift cap to clean out Twist Cap to Open and Drain la
16. le Adjustment The handle angle can be adjusted without tools by loosening the Angle Adjustment Knob A on each side and rotating the handle to the desired position There are 5 angular positions 11 25 apart for a total of 45 between the minimum and maximum position Machine Overview Horizontal Adjustment The horizontal position can be adjusted by removing the 4 Mounting Bolts B 2 each side with a 9 16 socket and sliding the Mounting Plate P to one of the 3 available positions The machine is shipped from the factory in position 1 Plate Position 1 Fully Extended Shipping Position Plate Position 3 Plate Position 2 Solution Tank Drain Hose The solution tank may be drained by removing the Solution Tank Drain Hose A from the Hose Barb B and routing the hose to a floor drain Solution Level Indicator The Solution Tank Drain Hose also serves as a water level indicator for the solution tank The amount of water remaining in the solution tank can be seen through the clear drain hose Level markers molded into the solution tank are positioned at 1 4 1 2 3 4 and full levels 10 Machine Overview Solution Fill Filter The Solution Fill Filter B should be cleaned regularly To remove simply open the Solution Tank Lid A and pull the filter out Screened Float If the recovery tank is overfilled or a large amount of foaming is present the screened float
17. rease the solution rate Moving the lever all the way down shuts off solution flow Battery Fault Gauge G This gauge displays the remaining battery charge This gauge also displays any fault codes that might occur with the Drive Motor Controller see Diagnostic Codes Speed Control H This control sets the speed at which the machine will move Charge Status Indicator 1 This gauge displays the status of the batteries during charging The gauge has a readout of 3 LEDs 1 Green 1 yellow 1 Red Green indicating a full charge Yellow indicating 80 charged Red indicating the batteries are charging Machine Overview Optional Hour Meter The Manufacturer offers an optional hour meter for the Floor Scrubber The optional kit replaces the power cord mounting bracket at the rear of the machine with one that contains an hour meter Manufacturer s Kit K E1720HM Circuit Breakers The circuit breakers are located at the bottom of the back panel of the machine A Main Control Circuit Breaker 4A B Brush Motor Circuit Breaker 30A Vacuum Motor Circuit Breaker 20 D Drive Motor Circuit Breaker 20A If any of the functions above are not operating check if the circuit breaker buttons have tripped Press to reset Battery Compartment The battery compartment is located under the recovery tank The Bat tery compartment can be accessed for servicing and maintenance by tilting the recovery tank make sure recover
18. rge debris Deck Skirt Removal Do not lower without brush CAUTION Bristles may be damaged if deck is lowered onto floor without brush pad driver installed Brush Deck Skirt will ride on With brush removed amp deck raised the floor in use and float up or Remove skirt for cleaning by pulling down based on amount of pad forward then down over the edge of brush remaining the deck 14 The Floor Scrubber This machine was designed with total operator comfort and ease of use in mind All machine components have been designed as a total system to efficiently clean dirty floors The Floor Scrubber has two available scrub head types and sizes to fit specific applications Please contact your representative for specific recommendations for the correct scrub head type size and brush type and chemical applications Before using the machine always perform the following steps to ensure proper machine operation e Check under the machine for leaks e Check the rear squeegee for wear and damage e Check the solution and recovery tank levels After using the machine always perform the following steps e Check the battery charge level Charge batteries if necessary When charging batteries extra precaution is required Battery acid can cause burns When working on or around batteries always wear protective clothing and safety glasses Remove metal jewelry Do not lay tools or metal objects on top of the batteries C
19. t the cone of the washer is facing out toward the rear of the machine Remove washer and rinse reinsert and screw assembly together tightening by hand Overtightening with tools may damage the plastic threads A Fitting MGHT B Screened Washer Hose Barb Insert D Fitting FGHT Rear Squeegee Cleaning the Squeegee Changing the Squeegee Blades A Squeegee Check the squeegee A daily and clean Check the inner and outer squeegee Star shaped knob as necessary blades on the squeegee A weekly for Adjusting screw for angle adjustment 1 Pull off the suction hose 0 signs of wear The squeegee blades can D Suction hose 2 Loosen the two star shaped knobs B reused by turning them can be turned E Blade fastening latch 3 Remove the squeegee A for four total uses F Washers for caster height adjustment 1 Pull off the suction hose D loosen the G Caster Wheel Axle two star shaped knobs B and remove the squeegee 2 Unlock the fastening device E and re move the outer squeegee blade Turn the squeegee blade or install a new one necessary Change the inner squeegee blade in the same way 12 Machine Overview Adjusting the Squeegee Blades Angle Adjustment The angle adjustment is the decisive factor in ensuring that the squeegee blades on the squeegee lie evenly on the floor 1 Park the machine on a level surface and lower the squeegee 2 Loosen the lower wing nut B on the adjusting screw A and ad
20. t used The controller is being inhibited from driving this may be because the battery charger is connected www bulldogscrubbers com 877 292 3935 Rev 12 09
21. ush motor will turn on To Turn on Cleaning Solution Move solution lever from closed down position up to the desired flow position With the scrub deck on the floor depress the bail handle solution will begin to flow Note The solution solenoid will stop solution flow whenever the bail handle is released Direction Switch Select direction of machine by moving the directional rocker switch from the neutral position to the forward or reverse position The direction of the machine movement is shown on the operator panel with forward and reverse arrows Speed control Move the speed dial to the desired position Turning the dial clockwise increases the speed Turning the dial counterclockwise decreases the speed Driving Depress the operator bail handle the machine will move in the direction selected To Charge Batteries When the battery status indicator reaches the red zone the batteries need be recharged Take the machine to a well ventilated area unwind the battery charger power cord from the electrical box cover and plug into an appropriate power source After approximately 10 seconds the battery charge status indicator will turn on Be sure to check the battery water levels as recommended WARNING Charging batteries generates explosive gasses Do not charge batteries when open flames or sparks are present Do not smoke Charge the batteries in a well ventilated area Solution Solenoid Water solenoid will operate when t
22. y tank has been drained before tilting The battery compartment contains two 12 volt batteries connected in series Connect the batteries according to the battery connection diagram see diagram The recommended batteries are 140Ah Manufacturer s P N 956140 or 100Ah Manufacturer s P N 956100 Gel The battery tray may be drained if necessary using the orange drain hose located above the rear caster on the right side of the machine FRONT OF MACHINE Machine Overview Diagnostic Code Guide When an error or fault occurs within the machine a fault code will appear on the battery gauge represented by a specified number of flashing LEDs See Trouble shooting for further information Low Battery Voltage Check condition of battery and conditions Drive Motor Fault Check all connections between the motor and controller Diagnostic Codes The number of flashing bars on the battery gauge represent fault codes as indicated below Drive Motor Short Circuit 3 Motor has a short circuit to a battery connection Contact Service Agent Battery Lockout 4 Battery voltage is too low controller is preventing function Charge batteries Not Used Drive Inhibit Check battery charger drive is inhibited when plugged in Handle Adjustment The Floor Scrubber handle was designed with operator comfort in mind The angle and horizontal position of the handle can be adjusted to suit the needs of the operator 7 9 Ang
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