Windsor PT-20 User Manual

Operator Safety Instructions

Read the instruction manual before operating this

mac h i ne.

Operate this machine only from the rear of machine.

~ ~~~~ ~~~

Use caution when operating the machine on a ramp

or

incline.

on a ramp or incline.
Machine can cause an explosion when operated near

flammable vapors and materials.

Do

not turn

or

leave this machine unattended

~

'

~ ~~

Store machine inside. Keep the electrical components
of the machine dry.

~ ~ ~~

Lead acid batteries generate gases which can cause
an explosion. Keep sparks and flames away from the
batteries. Charge the batteries only in a well ventilated
area.

~ ~ ~~ ~~ ~

Wear eye protection when working near batteries.

Do

not put any type of metal objects across the battery

or

terminals

on top of the batteries.

Maintenance and repairs must be done by qualified
personnel only. Maintain adjustments on machine

as per specifications noted in the service manual.

Make sure all warning and caution labels are legible

and properly attached to the machine.

2

CONTROL

HANDLE

SOLUTION

“ON”

I

LIGHT

MAIN

SWITCH

LIGHTED

VACUUM

SWITCH

SOLUTION

CONTROL

LEVER

Controls flow of cleaning solution to floor.

Light

Indicates charge condition of batteries

Switches on main drive motor and brush.

Light
Lighted switch indicates vac motor is on.

“ON”

4

green lights - full charge - approximately

1

green light - approximately

“ON”

BATTERY

CONDITION

LIGHTS

indicates solution valve is open.

indicates brush is turning.

BRUSH

“ON”
LIGHT

-

112

hour run time left.

4

TRAVERSE

112

hours run time.

CONTROL

HANDLE

3

,

MACHINE PREPARATION

BAITERIES

1.

Install batteries and connect battery
cables as shown.

RE

MfARN/NG:

leave cover open when charging batteries.

2.

Charge the batteries before using the
machine. (See Battery Charging
ced u re)

Provide proper ventilation and

BRUSH/DRIVE PAD ASSEMBLY

1.

Remove brush cover.

2.

Position brush under drive plate and lift
brush to engage drive lugs in recesses
in plate.

lock brush to drive plate.

A

quick clockwise motion will

FRONT

Pro-

NOTE

This pedal can also be used to

Increase brush pressure to the floor.

This can be done by pulling up on the
pedal and locking it in one of the posi
tions on the brush adjustment bracket.

2.

Switch on brush motor by turning the
main switch clockwise.

CAUTION:

on floor while machine is stationary.

3.

Switch on vacuum switch.

4.

Push solution lever forward.
amount of solution can be regulated
during operation depending on the type
of floor and the traverse speed of the
machine.

Do

not leave brush running

NOTE:

REGULAR MAINTENANCE

BEFORE STARTING

-

1.

Disconnect battery charger.
connect the “AC” power cord from the
wall receptacle before removing the
“DC” charger plug from machine.

2.

Check water level In batteries. Add
distilled water as needed.

3.

Attach brush

4.

Check vac motor and float for proper seal.

5.

Check vac hose connection at squeegee
shoe.

8.

Check squeegee blades for wear.

7.

Fill machine with hot water and add
cleaning chemical at the proportions
noted on the container.
sudsing cleaner designed for use in
automatic hard surface floor scrubbers.

BEFORE STORING MACHINE AT

The

THE END

1.

Drain both solution and recovery tanks
and rinse clean.

2.

Lift out vac motor and float assembly
to allow recovery tank to air dry.

3.

Remove brush or drive pad from drive
plate and store upside down or hang on
wall.

4.

Wipe down exterior of machine with

damp cloth.

5.

Raise squeegee assembly to “store”

position.

8.

Charge batteries. (See Battery Charging

Procedure)

OF

WORK

or

drive pad to drive plate.

WORK

PERIOD

NOTE

NOTE

Use a low

PERIOD:

Dis

-

CLEANING SOLUTION

1.

Fill machine with hot water and add

cleaning chemical at the proportion
noted on the container.

CAUTION:

cleaning chemical designed for use in
automatic hard surface floor scrubbers.

OPERATINO

Always use a

THE

MACHINE

low

rudsing

BRUSH/DRIVE PAD CONTROL

1.

Push down and slightly to the left on
brush lift arm to lower brush to floor
(right hand pedal).

4

5.

Push down on front of squeegee pedal
to release the latch arm and lower
squeegee assembly to

CAUTION:

moving the machlne in
vent damage to squeegee blades.

8.

To

go

traverse handle.

STOP

To

pull back on the control handle.

To

REVERSE

handle.

Always lift squeegee before

FORWARD

release the traverse handle and

machine lift up on traverse

floor.

REVERSE

press down on the

to pre

BATTERIES - CHAROINQ
AND MAINTENANCE

BAITERY CHARGING PROCEDURE

-

WARNING:

gases which can cause an explosion. Keep
sparks and flames away from batteries.

SMOKING.

when working near batteries. Charge the
batteries only in a well

1.

Set the charger on a flat level surface.

2.

Lift

cover up during charging cycle.

3.

Connect the “DC” charger plug to the

connector on the machine.

safety override switch is activated when

the

prevents all panel circuits on the machine
from accidentally being switched on

during charging cycle.

4.

Connect charger “AC” plug to properly
grounded outlet that has correct voltage
for the charger.

5.

The charger supplied by Windsor is
totally automatic and shuts
batteries are fully charged.

NOTE:

detailed charging information.

8.

After charging check electrolyte level
the batteries. Add distilled water to the

level as shown in dlagram. (upper right)

Lead acid batteries generate

Always wear eye protection

ventilated area.

up battery compartment cover. Leave

NOTE

“DC’

charge plug Is connected. This

off

when the

Refer to the charger manual for

NO

A

Of

BATTERY MAINTENANCE

1.

Keep tops of batteries clean and dry.
Use a damp cloth with a weak
of baking soda or ammonia and water.
Use a clean dry cloth to wipe battery
tops dry after cleaning.

2.

If

corrosion (white deposits) appears on
the battery terminals and cable clamps,
remove and clean. Use a battery terminal
and connector cleaning tool.

SOlutlOn

2.

Check motor brushes - when worn to

318"

length replace both brushes.

DRIVE CHAIN

1.

Remove left side skirt and side panel.

2. To

remove chain, remove retaining clip

and pull out master link.

2.

Remove pulley to allow removal of left
hand lift arm.

3.

Remove right hand pivot bolt, bushing
and lift arm.

BATTERY TERM

3.

Keep the battery electrolyte at the
correct level
bottom of filler tube of each cell. Dis

tilled

water should be added, as needed,

AFTER

charging cycle.

WARNING:

level to drop below the tops of the plates.

SERVlClNQ

I

N

AL CLEAN E

-

approximately

Do not allow electrolyte

THE

114

PT-20

SCRUBBER

CAUTION:

ments or repairs to the machine..

1.

Only qualified maintenance personnel
are to perform repairs.

2.

Make sure battery charger is dlscon

nected.

3.

Make sure all switches are

4.

Remove batteries as required or dlscon-
nect main battery leads from batteries
when making repairs to electrical

VACUUM

1.

Disconnect motor leads from connector
and

Before making any adjust

MOTOR

lift out vac motor.

"

.

OFF

R

"

below

"

system.

3.

To

adjust chain tension

A.

Remove traverse drive pulley.

-

-

B.

Loosen lock nut and back out screw

-

(I)

turn.

C.

Use a hammer and punch to rotate
the eccentric bushing to tighten or
loosen the drive chain.

. . .

4.

To

check gear unit oil level - remove
Inspection plug;
bottom of hole.
plug and add

TRAVERSE DRIVE

1.

Remove lower right hand side skirt.

2.

Disconnect motor leads from terminal

block.

3.

Remove snap ring from end of motor
pivot shaft.

oil should be at the

To

add

011,

90

welght oil as needed.

remove

MOTOR

fill

QEAR

1.

UNIT

Loosen belt tension screw and remove
belts.

5

4.

Lift out motor - check motor brushes.

When worn to

318"

replace brushes.

3.

Remove axle hub clamps. Lift
bly and lay on bench to service.

off

assem

-

SQUEEQEE ASSEMBLY

To

remove squeegee assembly.. .

1.

Depress pedal to raise squeegee.

2. Pull retaining pin from locator stud.

3.

Push down on squeegee to remove from
drag arm and slide squeegee to the right
to disengage right hand stud from arm.

DIFFERENTIAL ASSEMBLY

NOTE:

The differential assembly, traverse

drive motor and brush gear unit can be

removed as a total unit for servicing, if
required.

1.

Lay machine on side or build tripod
supports for each side of machine to
hold unit upright as shown.

WHEEL/DIFFERENTIAL

AXLE ASSEMBLY

1.

Remove bolt holding wheel to axle.

2.

Remove wheel from axle. Use wheel

if

puller,
damage threads in center hole of axle.

3.

To
A.

B.

needed, being careful not to

remove axle and bearings from hub ...
Remove snap ring from hub.

Use an arbor press or hammer and
block of wood to remove bearing and

axle.

4.

When installing or replacing squeegee

blades make sure the smooth
blade is next to the squeegee casting.

5.

Squeegee support caster - with
squeegee assembly setting perpendicular
to the floor surface, adjust caster to a
clearance of approximately

bottom of caster and the floor.
squeegee blades wear, adjust caster to
maintain this dimension.

6. The angle of the squeegee can be
changed with the adjusting screw. Turn
screw clockwise to tilt squeegee forward
and counterclockwise to tilt rearward.
Tighten lock nut after making adjustment.

1/8"

slde

between

As

1/0"

of the

the

2. Remove boits from brush lift arm bracket

and traverse drive connecting arm.

6

C.

To

remove roiler bearing from hub,
use a piece of
out bearing.

314"

dia. tube to drive

7.

Squeegee pressure can be changed with
the adjusting screw.
turn counterclockwise, to decrease
pressure turn

To

clockwise.

Increase

pressure