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Operator Safety Instructions
Read the instruction manual before operating this
h
ine.
Operate this machine only from the rear of machine.
Use caution when operating the machine on a ramp
or incline. Do not turn or leave this machine unattended
on a ramp or incline.
Machine can cause an explosion when operated near
flammable vapors and materials.
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
terminals or 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
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NOTE This pedal can also be used to
brush pressure to the floor.
REGULAR MAINTENANCE
,
MACHINE PREPARATION
This can be done by pulling up on the
BEFORESTARTING WORK PERIOD
1. Disconnect battery charger. NOTE Dis
pedal and locking it in one of the posi
-
1. Install batteries and connect battery
-
tions on the brush adjustment bracket.
cables as shown.
connect the “AC” power cord from the
wall receptacle before removing the
“DC” charger plug from machine.
2. Check water level
batteries. Add
distilled water as needed.
RE
FRONT
3. Attach brushor drive pad to drive plate.
4. Check
motor and float for proper
5. Check
shoe.
hose connection at squeegee
Provide proper ventilation and
leave cover open when charging batteries.
8. Check squeegee blades for wear.
7. Fill machine
hot water and add
2. Charge the batteries before using the
machine. (See Battery Charging
cedure)
cleaning chemical at the proportions
noted on the container. NOTE Use a low
sudsing cleaner designed for use in
automatic hard surface floor scrubbers.
2. Switch on brush motor by turning the
main switch clockwise.
Do not leave brush running
on floor while machine is stationary.
PAD ASSEMBLY
1. Remove brush cover.
3. Switch on vacuum switch.
BEFORE STORING MACHINE AT
THE END OF WORK PERIOD:
2. Position brush under drive plate and lift
brush to engage drive lugs in recesses
4. Push solution lever forward. NOTE: The
amount of solution can be regulated
during operation depending on the type
of floor and the traverse speed of the
machine.
in plate.
A
quick clockwise
will
1. Drain both solution and recovery tanks
brush to drive plate.
and rinse clean.
2. Lift out
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)
5. Push down on front of squeegee
to release the latch arm and lower
squeegee assembly to
BATTERIES
CLEANING SOLUTION
AND MAINTENANCE
Always lift squeegee before
1.
machine with hot water and add
cleaning chemical at the proportion
noted on the container.
CHARGING PROCEDURE
moving the
in REVERSEto pre-
vent damage to squeegee blades.
WARNING: Lead acid batteries generate
gases which can cause an explosion. Keep
sparks and flames away from batteries. NO
SMOKING. Always wear eye protection
when working near batteries. Charge the
Always use a low
cleaning chemical designed for use in
automatic hard surfacefloor scrubbers.
batteries only in a well
area.
OPERATINO THE MACHINE
1. Set the charger on a flat level surface.
2. Lift up battery compartment cover. Leave
cover up during charging cycle.
PAD CONTROL
1. Push down and slightly to the left on
brush lift arm to lower brush to floor
(right hand pedal).
3. Connect the
connector on the machine. NOTE
safety override switch is activated when
the charge plug connected. This
prevents all panel on the machine
charger
to the
A
from accidentally being switched on
during charging cycle.
8. To go FORWARD press down on the
traverse handle.
4. Connect charger “AC” plug to properly
grounded outlet that has correct voltage
for the charger.
To STOP release the traverse handle and
pull back on the control handle.
To REVERSE machine lift up on traverse
handle.
5. The charger supplied by
is
totally automatic and shuts off when the
batteries are fully charged.
NOTE: Refer to the charger manual for
detailed charging information.
8. After charging check electrolyte
Of
the batteries. Add distilled water to the
as shown in dlagram. (upper right)
4
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2. Check motor brushes
-
when worn to
length replace both brushes.
2. Remove
hand lift arm.
to allow removal of left
hand pivot bolt, bushing
DRIVE CHAIN
1. Remove left side skirt and side panel.
MAINTENANCE
3. Remove
and lift arm.
2. To remove chain, remove retaining clip
and pull out master link.
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.
BATTERY TERM
I
NAL CLEANE
3. To adjust chain tension ...
3. Keep the battery electrolyte at the
correct level approximately 114 below
bottom of filler tube of each cell. Dis
A. Remove traverse drive pulley.
4. To check gear
Inspection plug;
oil level
should be at the
remove fill
-
remove
-
"
-
bottom of hole. To add
tilled water should be added, as needed,
AFTER charging cycle.
plug and add 90 welght oil as needed.
WARNING: Do not allow electrolyte
to drop below the tops of the plates.
THE
SCRUBBER
Before making any adjust
ments or repairs to the machine..
-
.
1. Only maintenance personnel
are to perform repairs.
2. Make sure battery charger is dlscon
B. Loosen
nut and back out screw
-
turn.
3. Make sure all switches are
"
OFF
"
C. Use a hammer and punch to rotate
the eccentric bushing to tighten or
loosen the drive chain.
TRAVERSE DRIVE MOTOR
4. Remove batteries as requiredor
1. Remove lower right hand
skirt.
nect main battery leads from batteries
when making repairs to electrical
2. Disconnect motor leads from terminal
VACUUM MOTOR
3. Remove snap
from end of motor
1. Disconnect motor leads from connector
pivot shaft.
and
out
motor.
QEAR UNIT
1. Loosen belt tension screw and remove
belts.
5
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4. Lift out motor
worn to
-
check motor brushes.
replace brushes.
3. Remove axle hub clamps. Lift off assem
-
ASSEMBLY
To remove squeegee assembly.. .
bly and lay on bench to service.
1. Depress pedal to
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
AXLE ASSEMBLY
drive motor and brush gear unit can be
removed as a total unit for servicing, if
required.
1. Remove bolt holding wheel to axle.
4. When installing or replacing squeegee
2. Remove wheel from axle. Use wheel
puller, if needed, being careful not to
damage threads in center hole of axle.
blades make sure the smooth
of the
blade is next to the squeegee casting.
1. Lay machine on side or build tripod
supports for each side of machine to
hold unit upright as shown.
5. Squeegee support caster with
-
squeegee assembly setting perpendicular
to the floor surface, adjust caster to a
clearance of approximately
between
bottom of caster and the floor. As the
squeegee blades wear, adjust caster to
maintain this dimension.
3. To remove axle and bearings from hub...
A. Removesnap ring from hub.
B. Use an arbor press or hammer and
block of wood to remove bearing and
axle.
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.
2. Remove boits from brush lift arm bracket
and traverse drive connecting arm.
C. To remove roiler bearing from hub,
7. Squeegee pressure can be changed with
use a piece of
out bearing.
dia. tube to drive
the adjusting screw. To
pressure
turn counterclockwise, to decrease
pressure turn
6
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BRUSH ANGLE
2. After installing new belt check for clear
-
Operatingthe machinewith
excessive pressure on the squeegee will
cause abnormal wear on the squeegee
blades.
between traverse pulley and brush
drive belt. The pulley should not be in
contact
the belt when the traverse
brush slowly to the floor. When the rear
of the brush “A” touches the floor, the
front of the brush
3/16” from the
handle is in the neutral position.
BRUSH DRIVE BELT
1. Remove traverse drive belt by rolling belt
To adjust clearance:
should be about
A. Remove left side panel.
off pulley.
Loosen
nuts on link rod. Adjust
2. Loosen belt tension adjusting screw and
bracket on link rod so pulley
not
will allow the brush to rest com-
pletely on the floor.
remove brush drive belt. After readjust
ing belt tension, make sure lock nut on
adjusting screw tight.
-
contact belt. Retighten lock nuts on
link rod.
A. If the brush vibrates while in
tlon Increase dirtanu “B”.
B. If the machine pulls to the left during
dlrtanu “B”.
3. The springs (C) should be adjustedso as
to maintain the distances as shown.
4. To change brush inclination,
(D) and turn tie rod (E)
angle reached.
nut
the correct
-
TRAVERSE DRIVE BELT
1. With operating handle in neutral position,
roll belt off pulley. Replaceas required.
A
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VAC, BATTERY, TANK
VAC, BATTERY, TANK
9
70280 Stud, 1/4 Turn Fastener
10 70076 10 32 1 FHMS
11 51074 Lug, Shroud Mounting
12 48012 Knob, 5/16 18
-
x
-
8
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A
9
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MAINFRAME
34
37
36
35
38
I
41'
39
,
46
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SQUEEGEE
59
--
21
I
11
.
.
.
.
,
,
.
.
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CONTROLS (MECHANICAL)
(MECHANICAL)
KEY PART NO. DESCRIPTION
1
2
3
4
5
6
7
8
9
05029 Arm. Drive Linkage
70015 Scr. 1/4 20 x HHMS
87090 Washer, 1/4 ID x 3/4 OD
14492 Bushing, .25 ID .37 OD x .25
70270 Scr, 1/4 20 x 3/4 HHCS
05030 Arm, Drive Linkage
70260 Scr., M6 x 16 HHMS
87087 Washer, M6 x 25
-
x
-
14493 Bushing,
ID x .37 OD
20 Hex Washer
11 05033 Arm, Linkage Transfer
12 14491 Bushing, .25 ID
13 70265 Scr, 1/4 20
14 73268 Spring, Drive Linkage
15 57117 Nut. 5/16 24 Hex
16 67114 Rod, Drive Linkage
17 87096 Washer, 5/16 Lock
10 57105 Nut, 1/4
-
x
OD
SHCS
-
x
-
-Lite
18 27277 Clevis, 5/16
19 66116 Clevis,
20 66121 Pin, 3/32 x
21 70273 Shoulder Bolt,
22 87003 Washer,
-
24 UNF Rod
x
28
Cotter
x 1.OO
ID
x
OD
23 90002 Yoke, PT
-
20 Drive Linkage
18 Flange
-32 Washer
24 57112 Nut, 5/16
25 57104 Nut. 10
-
26 67122 Rod, Drive Linkage
27 14509 Bracket, RH Drive Handle Mtg
\
‘25
28 62190 Plate, PT-20 Support
29 62211 Plate, Drive Handle Arm
30 70085 Scr, 1/4
31 57047 1/4
-
-
20 x
20
PHMS
32 61102 Panel, PT
33 70054 Scr, 8 32 x 3/8 FHMS
34 38131 Handle, PT 20 Drive
35 36084 Grip, PT 20 Drive
36 48030 Knob, PT 20 Solution Lever
37 38133 Handle, PT 20 Main
-20 Control
\
-
\
47
-
-
-
-
.
38 70057 Scr, 1/4
-
20 x 1.OO RHMS
\
48
49
Controls (Mechanical) continued
KEY
DESCRIPTION
I
45 70245 Scr, 4
46 72053 Switch, 125 VDC SPST No Lever
47 57100 Nut, 4 40 Hex
48 14519 Bracket, Solution Cable Mtg
-40
PHMS
-
49 27289 Cable, PT
-
20Solution
7
50 70085 1/4
-
20
PHMS
51 70024 Scr,
52 70279 Scr,
x
Sheet Metal
Sheet Metal PH
5
53 87029 Washer, 5/16 ID x 3/4
OD
12
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48 49 50
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-39
14
2 1
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LABELS
PART NO. DESCRIPTION
LOCATION
I
I
inside cover
On handle
Under hood
50378 Instruction Card
Maintenance
15
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DRIVE
I
.
74-Reduction Gearbox Assembly
BRUSH DRIVE
KEY
PART NO. DESCRIPTION
t
53 67112 Rod, Turnbuckle Sliding
54 57022 Nut, 3/8-16
66105
56 67104
57 70260 Scr,
Pin, Turnbuckle
Ring, Ext Snap
16
H-D
58 87056 Washer, M6
59 20068 Clamp, PT-20 Brush
60 73317 Shim,
Dia.
61 73318 Shim, 15mm Dia.
62 73319 Spring, PT-20 Brush Lock
63A 02095 Brush, PT-20 Nylon
638 02096 Brush, PT-20 Polypro
63C 02097 Brush, PT-20 Extra Aggressive
02098 Pad Driver, PT
64 59020 0-Ring, 4125
-20
,
65 57133 Nut, M24 x 2 Lock
66 73320 Shim, M47 x 0.3
67 67144
68 73313 Seal, M30
69 36090 Gear, Reduction Pinion
70 67143 Ring, M60 Snap
Ring, M47 Int Snap
x
47 x
7
Oil
71 62202 Plate, PT-20 Brush Holder
72 70304 Scr, 1/4-20 x 1.25 FHWS
73 51076 Lug, Brush Mounting
74 36076 Gearbox Asm, PT-20 Reduction
16
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Product Modification
Pi-20 BATTERY SCRUBB
Beginning with Serial
the following changes
were made to the brush drive as shown on Page 16
in the .service manual. Retain this notice in your
manual for reference when ordering replacement
parts.
Key #44
replacing the snap rings.
-
Changed to rod with lock nuts,
2. Keys #1 35 72 73 74
-
2
-
3
-
4
-
6
-
-
-
-
-
75
-
76
-
77
-
Changed
drive plate, brush drive lock, and new gear unit
assembly.
37
43 42 41 40
39
38
I
I
3/91)
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I
PROBLEM
PROBABLECAUSE
CORRECTIVEACTION
Nopower.
Circuit breaker tripped.
Reset brush motor circuit breaker (50 amp).
1. Clean battery cable clamps and battery terminals.
2. Check voltage at points A and Voltage should be 22/26 VDC.
Battery cables corroded
at battery terminals.
Faulty main switch.
1. Check voltage at points A and C. Voltage should be 22/26 VDC.
2. Turn main switch on and check voltage at points A and D. Voltage should be
22/26 VDC. If no voltage remove leads and check switch for continuity,
Faulty safety override
micro switch.
With main switch “ON” check voltage at points A and
E
and
A
and F. Voltage should
be 22/26 VDC. If no voltage at A and F remove leads and check micro switch for
continuity. Should be continuity in normal position and no continuity when switch
lever is activated.
Faulty solenoid.
With main switch on (solenoid energized)check voltage at points
should be 22/26 VDC. If no voltage replace solenoid.
A
and
G
-
voltage
Vacuum motor
does not run.
Circuit breaker tripped.
Loose connections.
Reset
motor circuit breaker.
Check motor lead connections at terminal block and
motor. Keep all connections tight.
connector near
With main switch on check voltage at points A and H and A and I. If no voltage,
check continuity of circuit breaker. Replace as needed.
Faulty
breaker.
circuit
Remove leads and check switch for continuity. Replace as needed.
Faulty
switch.
Check motor brushes. Replace when worn to
Check
motor by securing
Motor brushes worn.
motor and applying 24 VDC to motor leads. No load amp draw of motor should be
15 amp.
Brush motor
doesnot run.
Reset (50 amp) brush motor circuit breaker.
Circuit breaker tripped.
Loose connection.
Check motor leads at terminal block connection (located under right hand lower
side panel) tighten set screws as needed.
With main switch on check ouput voltage at points A and G. Voltage should be
22/26 VDC.
Faulty solenoid.
Check motor brushes
-
replace when worn to
With batteries fully charged
Faulty drive motor.
and motor secured, apply battery voltage direct to motor. No load amp draw of motor
should be 12 to 13 amps.
Reset (6 amp) battery circuit breaker.
Solution light
does not work.
Faulty circuit breaker.
Loose connections.
Check for loose electrical connections at terminal block, solution switch, and
solution light.
Remove light and apply direct battery voltage (24 VDC) to light. Replace light as needed.
Adjust solution light switch.
Faulty solution light.
Light stay on with
solution lever in
“OFF” position.
Check (6 amp) battery circuit breaker. Reset if tripped.
Batterycharge
levelIndicator
lights.
No light are on with
main switch on.
1. Check electrical connections at circuit breaker.
2. Check voltage at inline connector at PC Board. Should be 22/26 VDC.
Loose connections.
17
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|