Pacific ScrubMaster 20B Installation and operation manual

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The contents of this manual are based on the latest
product information available at the time of
publication. Pacific Steamex reserves the right to
make changes or improvements to its machines
withoutnotice.
FOR YOUR CONVENIENCE, RECORD THE
FOLLOWING IMPORTANT INFORMATION:
MODEL
SERIAL NUMBER
PART NUMBER
DATE PURCHASED
INTRODUCTION
READ THIS BOOK
This operator’s book has important information for
the use and safe operation of this machine. Read
this book carefully before starting the machine.
Keepthisbookandtellalloperatorstoreadthebook.
If you do not follow the instructions, you can cause
an injury or damage equipment, furniture or
buildings.
For new books write to:
Pacific
2259 S. Sheridan
Muskegon, MI 49442-6252
Carefully inspect all components to ensure that there
is no concealed freight damage. If such damage is
discovered, file a “CONCEALED DAMAGE
REPORT” immediately with the delivering carrier.
OPERATING & MAINTENANCE
INSTRUCTIONS
ScrubMaster 20B & 20BT
Single Disc
Automatic Scrubbers

TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS
SYMBOLS USED ON THE MACHINE
MACHINE PREPARATION
1. UNPACKING THE MACHINE
2. BATTERY INSTALLATION
3. CONNECTING THE BATTERY CHARGER
4. CHARGING THE BATTERIES
5. CONNECTING THE BATTERY CONNECTOR
6. BATTERY CHARGE LEVEL INDICATOR (machines with traction)
7.BATTERYCHARGELEVELINDICATOR(machineswithouttraction)
8.HANDLEBARHEIGHT
9. SQUEEGEE ASSEMBLY
10. ADJUSTING THE SQUEEGEE HEIGHT
11. ADJUSTING THE SQUEEGEE INCLINATION
12. RECOVERY TANK
13. SOLUTION TANK
14. SOLUTION WATER
15. BRUSH ASSEMBLY
OPERATION
OPERATING
MOVEMENT (MACHINES WITHOUT TRACTION)
MOVEMENT (MACHINES WITH TRACTION)
DEVICE TOO FULL
BRAKE
UPONCOMPLETIONOFTHEWORK
DAILYMAINTENANCE
CLEANING THE RECOVERY TANK
CLEANING THE VACUUM FILTER
CLEANING THE SQUEEGEE
REPLACING THE SQUEEGEE BLADES
DISASSEMBLY OF THE BRUSH
CLEANING THE BATTERY COMPARTMENT
WEEKLYMAINTENANCE
CLEANING THE SQUEEGEE HOSE
SOLUTION TANK CLEANING
CHECK BRAKE
TROUBLESHOOTINGGUIDE
INSUFFICIENT WATER ONTO THE BRUSH
THE MACHINE DOES NOT CLEAN SATISFACTORILY
THE SQUEEGEE DOES NOT DRY THE FLOOR WELL
EXCESSIVE FOAM PRODUCTION
WARRANTYPOLICY
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READ AND UNDERSTAND ALL INSTRUCTIONS AND WARNINGS BEFORE OPERATING
THIS MACHINE!
WARNING: To reduce the risk of fire, electric shock or injury:
1. Youmusthavetrainingintheoperationofthe machine before usingit. READTHE
INSTRUCTIONBOOK. Ifyou donotunderstandany instruction, askyoursupervisor.
2. Make sureall labels, decals,warnings, cautions andinstructions are fastenedto the machine.
3. Readthelabelscarefully on themachine. Do notcoverthemforany reason andreplacethemif
damaged.
4. Donot operate this machine unless it iscompletelyassembled,inspectthemachinecarefullybefore
operation.
5. Payclose attention to other peopleandespeciallychildrenwhileoperatingthis machine.
6. Be acarefuldriver,donotstrikeshelvingorscaffolding,especiallywherethereisadangeroffalling
objects.
7. Machinescancausean explosion whenoperated nearflammablematerialsandvapors. Do not
usethismachinewithornear fuels, graindust,solvents,thinners,orotherflammablematerials.
8. Incaseof fire, useapowder extinguisher. Donotuse water.
9. Do notuse thismachineas a meansoftransport.
10. Donotuse acid solutionsthat could damagethe machine.
11. Adjustyour speed totheconditionsof the floor.
12. Donotturn themachineona ramp. Donot stopandleavethe machineonaramp orincline.
13. When themachine is parked,take out thekey and setthe parking brake.
14. Duringanymaintenanceoperationdisconnectthepowersupplyfromthemachine.
15. Leadacidbatteries generate gasesthatcancausean explosion. Readtheinstruction manual
suppliedwiththe batterycharger. Keepsparks and flamesawayfrombatteries.
NOSMOKING. Charge the batteriesonlyinan areawithgoodventilation.
16. Do notuse a chargerif thepowercord isdamaged.
17. Alwaysweareye protection and protectiveclothing when workingnear batteries. Removeall
jewelry. Donotput toolsorother metal acrossthebattery terminals,orthe tops ofthe batteries.
18. Checkthelevel of theelectrolyteeverytime you charge thebatteries. Ifthe levelis low,add
distilledwateronly.
19. Maintenanceandrepairs must beperformedbyauthorized Service Centersonly. Make
adjustmentsaccordingtothespecificationsgivenintheservicemanualforthismachine.
20. Keeptheelectrical partsofthemachine dry. Donot washthemachinewith directwaterjetsor
highpressure,norwithcorrosive material. For storage,keep themachine in adry building.
21. Watersolutions orcleaning materials usedwith thistype of machinecan leave wetareas on the
floorsurface. These areascancause adangerouscondition for theoperator or otherpersons.
AlwaysputCAUTION signs neartheareayouare cleaning.
22. Donotreachunder shrouds with fingers,hands, or toes whenmachine is running.
IMPORTANT SAFETY INSTRUCTIONS
5

Indicatesthemaximumrecommendedtemperatureforthesolutiondetergent (50°C or
122°F).
Itislocatednearthefill hole of thesolution tank.
SymbolsUsedontheMachine
6
Symbolforthewatervalve:
Itisusedtoindicate the solenoid valveswitch.
Symbolforthebrushorpad:
Itisused to indicatethebrushmotorswitch.
Symbolindicatingtheraisedor lowered position ofthebrushbase:
Itindicatestheleverforliftingthebrushbase.
Symbolforthevacuummotor:
Itisusedtoindicate the vacuummotor switch.
Symbolindicatingthe raised orloweredpositionofthe squeegee:
Itindicatesthesqueegeeleverposition.
Symbolindicatingthechargelevelofthebatteries:
Itis necessary torechargethebatteries whenthe
greenlightbeginstoblink.
Thesymboldenotingthe brake.
Itis usedontop oftheemergencyandparking brakelever, andused to
indicatethesignallightofthehandbrake.
Indicatesthe drainpipeoftherecovery tank.

Symbolindicatingtheadjustment leverforthehandlebarheight.
Thissymbol serves asareminder for theoperatorto readthemanual.
7
SymbolsUsedontheMachine
ON/OFF
I / O
Symbolfor the keyswitch.
Symbolindicatingthepush button forthe brushrelease.
Symbolforthe couplingthat shows theanchorpointsandthe load direction.
WarningSymbol-Readthese sections carefullyfor thesafetyoftheoperator and the
machine.
Indicatesthedangerofgasexhalationsandemissionofcorrosiveliquids.
Indicatesafirehazard.
Donotapproach with openflames.

2. BATTERY INSTALLATION
The two 12 volt 145 A/H batteries fit in the compartment under the recovery tank.
Recommended Batteries:Crown Battery Manufacturing Company Part #711
Trojan Battery Company Part #30XHS
East Penn Manufacturing Company Part #8KFS
For battery maintenance and charging, follow the instructions
provided by the battery supplier.
8
MACHINE PREPARATION
1. UNPACKINGTHEMACHINE
1. Use a fork truck to move the machine when packaged.
2. Take off the outer package.
3. The machine is fixed on the pallet with wooden wedges that block the wheels.
4. Take the wedges off.
5. Using a ramp, pull the machine down from the pallet, pushing it in reverse
motion. Avoid violent blows to the base.
Installation Instructions:
1. Lift the recovery tank forward.
2. Detach the squeegee hose (1) from the recovery tank.
3. Take off the vacuum plug (2) by rotating it counterclockwise.
4. Take the recovery tank off.
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9
MACHINE PREPARATION
5. Place the batteries in their compartment.
6. Connect the batteries’ connector (2) to the machine’s connector (1).
7. Reassemble the recovery tank, vacuum plug and squeegee hose.
3. CONNECTINGTHE BATTERYCHARGER
The battery charger’s connector fits into the battery connector (2) located under
the recovery tank.
4. CHARGINGTHE BATTERIES
NEVER ALLOW THE BATTERIES TO RUN COMPLETELY DOWN,
recharge them within a few minutes after the battery indicator starts blinking. Never
leave the batteries completely discharged, even if the machine is not being
used.
When charging the batteries, take the recovery tank off. If the machine is equipped
with a hinge, keep it lifted by supporting the prop as shown in the figure.
Turn the key to the OFF position. Connect the DC connector on the charger to the
DC battery connector. Connect the AC charger plug to a receptacle that has the
correct voltage and frequency for your charger. Make sure the receptacle is
connected to the electrical ground.
WARNING! When charging the batteries, follow all the instructions
provided with this manual and the battery charger. Trained staff must
carry out the installation and maintenance operations.
WARNING! Fire Danger: Lead acid batteries generate gases that
can cause an explosion. Keep sparks and flames away from batteries.
NO SMOKING!
WARNING! To prevent an explosion, charge the batteries only in an
area with good ventilation.
WARNING! Always wear eye protection and protective clothing
when working near batteries.
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MACHINE PREPARATION
5. CONNECTINGTHE BATTERYCONNECTOR
After charging the batteries, reconnect the battery connector (2) to the connector
of the machine (1).
6. BATTERYCHARGE LEVELINDICATOR(machineswithtraction)
The batteries’ indicator is digital with 4 fixed positions and a blinking one. The
numbers, which appear on the display, show the approximate charge level.
4= maximum charge, 3= charge 3/4, 2= charge 2/4, 1= charge 1/4,
0= (blinking) discharged batteries)
NOTE: The brush motor automatically switches off a few seconds after the
battery indicator light begins to blink. By restarting the machine, you will be
allowed to turn on the vacuum motor and finish drying any wet areas.
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1
7. BATTERYCHARGEINDICATOR(machineswithouttraction)
The battery indicator is a green signal light; it is constantly on when the batteries
are sufficiently charged. The signal light will blink when it is necessary to
recharge the batteries.
8. HANDLEBARHEIGHT
The handle bar is adjustable in three different positions, to adjust:
1. Release the lever.
2. Put the handle bar at the desired height.
3. Release the lever and the handle bar will lock into place.

9. SQUEEGEEASSEMBLY
The squeegee is assembled as shown in the figure. The squeegee lever should be in
its up position. Insert the holding pin into the squeegee stud bolt to secure the
squeegee in place. Then fit the squeegee hose into its coupling; the hose should be
located to the right of the lifting cable.
10. ADJUSTINGTHESQUEEGEEHEIGHT
The height from the floor to the squeegee should be adjusted based on the blade’s
wear. Rotate the knob (2) counter-clockwise to lift the squeegee and clockwise to
lower it.
Note: Adjust the right and left knobs the same amount; the squeegee should be
positioned parallel to the floor.
MACHINE PREPARATION
2
1
5mm
11. ADJUSTINGTHE SQUEEGEEINCLINATION
During operation, the rear squeegee blade is most efficient when tilted back about
3/16 inch (5mm) along its whole length. To increase the blade bending in the central
part, tilt the squeegee body backward by turning the adjuster (1) counter-clockwise.
Subsequently, turn the adjuster clockwise to increase the bending at the sides of the
squeegee blade.
12. RECOVERYTANK
Open the lid and confirm the following connections are secure:
1. The vacuum plug (2) is securely attached: line up the notches and rotate the
plug clockwise to close. The vacuum motor hose must also be attached.
2. Confirm the squeegee hose (1) is properly connected.
3. Make sure the drain plug, which is located on the front of the machine is also
closed.
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13. SOLUTIONTANK
Unscrew the water inlet plug and confirm the solution filter, which is located on the
bottom left side, is properly assembled.
WARNING! Always use low foaming detergent. Adding antifoam liquid
into the recovery tank before cleaning will also help prevent foaming.
NEVER USE PURE ACID.
12
MACHINE PREPARATION
15. BRUSH ASSEMBLY
1. Lift the brush base, line up the lugs with the holes in the brush plate.
2. Lower the brush base, turn the key (1) to the ON position, press the brush
switch (2), then push the lever (3) on the handle bar. At this point the brush is
locked in place.
14. SOLUTIONWATER
Fill the solution tank with clean water at a temperature not more than 50°C/122°F.
Add the proper concentration of liquid detergent by following the manufacturer
instructions. Excess foam in the recovery tank can damage the vacuum motor, so
use only the minimum amount of detergent necessary. Reassemble the cover.
WARNING! No objects or people should be close to the brush during this
operation.
3. Adjust the height of the splash guard so it doesn’t touch the floor by turning the
knob (1). This adjustment has to be repeated regularly as the brush wears.
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OPERATION
OPERATING
1. Connect the machine connector (1) to the battery connector.
2. Turn the key (2) clockwise to ON. The signal light will come on (3), indicating
the batteries are charged. Note: If the battery indicator is blinking, the batteries
need to be charged.
3. Press the solenoid valve switch (4).
4. Press the vacuum motor switch (5).
5. Press the brush motor switch (6).
6. Adjust the amount of cleaning solution through the lever (1). There should be
enough solution to wet the floor uniformly, but not so much that it gets past the
splash guard. Remember that the correct solution quantity depends on the type
of floor, the dirt and the speed.
7. Release the lever (2) and lower the brush base.
8. Lower the squeegee using lever (3).
9. Make sure the parking brake (4) is released.
10. The machine will move by pushing the lever on the handle bar forward as
described in the next section. During the first few yards of operation, confirm
the amount of cleaning solution is sufficient and that the squeegee dries the floor
surface.
1
MOVEMENT(machineswithouttraction)
The traction of this machine is obtained through the brush, which is slightly inclined
to help drag the machine forward. To move the machine, turn the key (1) ON, wait
for 3 seconds and then push the lever (2) on the handle bar forward.
WARNING! Lift the squeegee when moving backward.
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MOVEMENT(machineswithtraction)
Thesemachinesareequippedwith electronically controlled traction, with two speeds
foward and one backwards. To move the machine, turn the key (1) ON, wait for 3
seconds and then rotate the lever (2) on the handle bar - rotate forward to move
forward or backward to move in reverse. The first forward speed is obtained by
pushing the lever only a few millimeters. The second and faster speed is obtained by
pushing the lever all the way forward.
WARNING! Lift the squeegee when moving backward.
14
OPERATION
DEVICETOOFULL
The machine is equipped with a float that stops the vacuum when the recovery tank
is full. When this occurs, empty the recovery tank by removing the plug on the drain
hose.
WARNING! Use gloves for protection from contact with
dangerous solutions.
BRAKE(machineswithouttraction)
The machine is equipped with a braking system controlled through the left lever (1),
which is used as both a parking and an emergency brake.
BRAKE(machineswithtraction)
The machine is equipped with an electronic braking system. To brake in normal
working conditions, just release the lever on the handle bar.
However, in case of an emergency, push down on the mechanical lever (1), as
shown above.
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15
UPON COMPLETION OF THE WORK
Afterfinishing your work and before any type of maintenance is done, it is necessary
todothefollowing:
1. Close the water valve through lever (1).
2. Raise the brush base with lever (2).
3. Lift the squeegee with lever (3). Note: The squeegee blades can be damaged if
the squeegee is not raised during storage or transport.
4. Switch off the solenoid valve switch (1).
5. Switch off the brush switch (2).
6. Switch off the vacuum motor switch (3).
7. Transportthe machinetothelocation where the recovery tank shouldbeemptied.
8. Turn the key (4) OFF.
9. Set the parking brake.
10. Pull out the hose on the front part of the recovery tank.
11. Unscrew the drain plug and empty the recovery tank.
WARNING! Use gloves for protection from contact with dangerous
solutions.
12. Remove the brush and clean it with water (refer to the section “Disassembly of
the Brush”).
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16
DAILY MAINTENANCE
CLEANINGTHERECOVERYTANK
1. Empty the recovery tank by removing the drain plug from the drain hose.
2. Unscrew the drain plug and empty the recovery tank.
Use gloves for protection from contact with dangerous solutions.
3. Lift the recovery tank.
4. Take off the vacuum plug (2) by rotating it counter-clockwise.
5. Remove the filter and its housing.
6. Rinse the tank with water.
CLEANINGTHEVACUUMFILTER
1. Lift the recovery tank.
2. Take off the vacuum plug by rotating it counter-clockwise.
3. Remove the filter and its housing.
4. Use water to clean the walls and the bottom of the filter.
5. If necessary, loosen the screws which lock the filter to the housing.
6. Rotate the filter counterclockwise until it is released.
7. Wash all components thoroughly.
8. Reassemble repeating the above operations inversely.
CLEANINGTHESQUEEGEE
To obtain the best drying results, keep the squeegee clean.
To clean the squeegee it is necessary to:
1. Remove the hose from the squeegee.
2. Loosen the knobs (1).
3. Clean the inside of the squeegee thoroughly.
4. Clean the squeegee blades thoroughly.
5. Reassemble.

17
DAILY MAINTENANCE
REPLACINGTHESQUEEGEEBLADES
Check the squeegee blades for wear and if necessary, change them.
To replace the squeegee blades:
1. Remove the squeegee hose from its coupling.
2. Push on the rocker arm and loosen the stud bolt.
3. Remove the squeegee from its support.
4. Loosen the wing nuts (1) that lock the rubber blades and take them off.
5. Replace the blades.
6. To reassemble the squeegee, repeat the above operations inversely.
DISASSEMBLYOF THEBRUSH
The machine is equipped with an automatic brush release system.
1. Lift the brush base with lever (1).
2. Set the brake lever (2).
3. Turn the key (1) ON and press the brush switch (2) while keeping the
release button (4) pressed. Then push and release the lever on the handle
bar (3). The brush will loosen and then fall under the cover.
WARNING! No objects or people should be close to the brush during
thisoperation.
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CLEANINGTHEBATTERY COMPARTMENT
Use the hose under the solution tank, which is accessible from the rear of the
machine to empty any liquids from the battery compartment.
WARNING! Use gloves for protection from contact with
dangerous solutions. Danger of emission of corrosive liquids!
Fire Danger: Do not approach with open flames!

18
WEEKLY MAINTENANCE
CLEANINGTHESQUEEGEEHOSE
Weekly or whenever the suction is insufficient, make sure the squeegee hose is not
obstructed. To clean:
1. Take off the hose from its coupling on the squeegee.
2. Take off the other end from the recovery tank.
3. Wash the inner part of the hose with a water jet from the tank side.
4. Reassemble.
WARNING! Do not wash the hose that goes from the vacuum
motor to the vacuum plug.
SOLUTIONTANKCLEANING
1. Remove the cap from the solution tank.
2. Rinse with water.
3. Remove the drain plug (1) and empty the tank.
WARNING! Use gloves for protection from contact with dangerous
solutions.
CHECKBRAKE
Check the distance between the brake pads and wheels weekly. Adjust to about
1/8 inch (3mm) by adjusting the nuts shown in the picture.

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TROUBLE SHOOTING GUIDE
INSUFFICIENTWATER ONTOTHE BRUSH
1. Make sure the water valve is open (lever 1).
2. Confirm there is water in the solution tank.
3. Make sure the solenoid valve switch is on.
THEMACHINEDOESNOTCLEANSATISFACTORILY
Check the condition of the brush and replace it if necessary. The brush should be
replaced when the bristles reach about 5/8 inch (15mm).
THESQUEEGEEDOES NOTDRYTHEFLOORWELL
1. Check that the squeegee blades are clean.
2. Adjust the inclination of the squeegee (see “MACHINE PREPARATION” ).
3. Confirm the vacuum hose is correctly fitted in its housing on the recovery tank.
4. Take off the entire vacuum assembly and clean it.
5. Replace the blades if worn.
6. Check that the vacuum motor switch is on.
7. Check the squeegee height adjustment (see “MACHINE PREPARATION”).
EXCESSIVEFOAMPRODUCTION
Check that a low foam detergent has been used. If required, add a small quantity
of antifoam liquid into the recovery tank.
Remember that more foam is generated when the floor is not very dirty. Use
less detergent if this is the case.
REFERTOTHE PARTS&SERVICEMANUAL FORELECTRICALSCHEMATICS
1