Minuteman MC20000CE Guide

200X
Brush Drive
Floor Scrubber
Battery
Model: MC20000QP, CE
Revised 6/02
OPERATION SERVICE PARTS CARE

TABLE OF CONTENTS
Page
Safety Instructions 1
Electrical Requirements 2
Control Panel Identification 3
Operating Instructions 4
Squeegee Adjustments 5
Brush Installation/Removal 6
Base Assembly 7 & 8
TankAssembly 9 & 10
Upper Assembly 11
Console Assembly 12
Motor Lift Assembly 13
Scrubhead Assembly 14
Dashboard & Back Panel Assembly 15
Squeegee Lift & Mechanism Assembly 16
Squeegee Assembly Complete 17
Wiring Diagram 18
Wiring Diagram - CE 19

1
IMPORTANT SAFETY INSTRUCTIONS
CAUTION
Operators must read and understand this manual before operating or maintaining this equipment.
• Keep hands and feet clear of moving parts while machine is in operation.
• All switches must be in the “OFF” position when charging batteries.
• Electrical motors and components can cause an explosion when operated near explosive
materials or vapors. Do not operate this machine near flammable materials such as solvents,
thinners, fuels, grain dusts, etc.
• Make sure all switches are turned “OFF” and battery connections are removed before
performing any maintenance procedures.
• Store or park this machine on a level surface only.
• These machines are designed for level floor operation only. DO NOT OPERATE on ramps
or inclines.
• 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.
• This machine is not suitable for picking up hazardous dust.
Charging batteries generates explosive gases. 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 batteries. Charge the batteries in a well-ventilated area.
Maintenance and repairs must be performed by authorized personnel.
SAVE THESE INSTRUCTIONS

2
ELECTRICAL REQUIREMENTS:
This piece of equipment operates on 24 Volt DC.
BATTERY REQUIREMENTS:
2 x 12V 105 Amp Hour 20 Hour Rate Deepcycle P/N 956712
BATTERY SERVICE AND INSTALLATION:
Warning: 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.
BATTERY INSTALLATION:
1. Raise tank assembly by gripping the front of the tank and lift the tank
backward as shown in Fig. 1.
3. Install batteries as shown in Figure 2.
CHARGING OF BATTERIES:
Charging of batteries generates explosive gases. 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 batteries. Charge the batteries
in a well-ventilated area. Fluid levels should be checked before and after charging and
maintained at the proper levels.

3
1. Squeegee lift lever
2. Recovery dump hose
3. Dashboard control panel
4. Solution control lever
5. Solution dump hose
6. Quick disconnect aux. out (optional)
7. Food pedal
8. Circuit breaker - Brush
9. Circuit breaker - Vac
10. Main power
11. Emergency button
12. Brush switch
13. Pump switch
14. Vacuum switch
15. Battery gauge
COMPARISON RECOMMENDED
TYPE DESCRIPTION DURABILITY* COLOR TO PADS USE
Bassine Natural Fiber Short Dark Brown Red Light duty
general cleaning,
acid etching
Nylon Nylon Medium Black Tan/Red General cleaning
& scrubbing vinyl
floors, ceramic tile
& concrete floors
Dyna-Scrub Nylon impregnated Long Light Blue Red General scrubbing,
with 500 Grit vinyl tile, ceramic
Silicon Carbide tile, epoxy floors,
Fine Bristle, urethane finish,
Dense Fill uneven concrete floors
Power-Scrub Nylon impregnated Long Rust Red/Blue Moderate aggressive
with 120 Grit Silicon scrubbing, tile floors,
Carbide Fine Bristle, concrete floors
Dense Fill
Poly-Grit Nylon impregnated Long Green Brown/Black Aggressive stripping
with 80 Grit and scrubbing, tile
Silicon Carbide floors, unfinished
Coarse Bristle concrete floors
Strata-Grit Nylon impregnated Long Dark Blue Black Heavy duty
with 46 Grit stripping/scrubbing
Silicon Carbide unfinished concrete
Coarse Bristle
AUTO SCRUBBER BRUSH DESCRIPTION
••
••
• Durability is dependent on floor surface, chemicals used and proper care.

4
OPERATING INSTRUCTIONS
BEFORE STARING, FAMILIARIZE YOURSELF WITH THE MACHINE AND ITS CONTROLS
(SEE “MACHINE OVERVIEW” & CONTROL PANEL DIAGRAMS)
1. Filling: Fill the solution tank with the desired amount of water and add liquid cleaning
solution to the proper dilution ratio. DO NOT USE powdered cleaning chemicals.
Powders are unlikely to dissolve thoroughly, resulting in clogging the in-line solution
filter. This can reduce or stop water flow to the brush.
2. Close lid.
3. Turn on machine by lifting the red emergency disconnect button (11) so it is in the up
position. Turn on main power switch (10).
4. Lower brush assembly.
- To lower the brush, first push the pedal (7) slightly outward on the machine
(unlock it), and then release it slowly.
- To lift the brush, press the pedal (7) down until lift mechanism engages.
5. Turn on brush (12).
6. Adjust solution control feed lever (4).
7. Turn on vacuum switch (14).
8. Lower squeegee assembly by lowering handle (1).
After Use:
1. Turn off solution feed (4).
2. Switch off brush (12) and raise (7).
3. Raise squeegee assembly (1).
4. Turn off vacuum motor (14).
Solution and recovery tanks should be emptied after every use.
MAINTENANCE:
Daily 1. Clean float assembly & squeegee blades. Vac filter
2. Recharge batteries (check battery acid levels before
and after charging).
Monthly 1. Check wear on squeegee blades.
2. Grease front wheels.
3. Grease pivot points on brush motor assembly.
Every 500 hours check condition of carbon brushes on vacuum motor and brush
drive motor.

5
SQUEEGEE ADJUSTMENTS
Squeegee Adjustment
The squeegee set-up is pre-adjusted
at the factory. Adjustments may be
required to get optimum performance
for different floors and conditions.
Pitch Control Adjustment
1. Ensure that the scrubber is on
a relatively flat surface. Pull the
red emergency button away from
the dashboard to activate power.
Turn on the main power switch
and turn the key switch. Raise
the scrubhead off the floor.
Turn the vacuum switch.
2. Lower the squeegee (item 1)
to the floor and move the
machine one or two feet
forward to check the rear
squeegee blade for uniform
deflection to the floor.
3. If uneven deflection or lay is evident, minor adjustments may be necessary to avoid
streaking and uneven wear on the blade.
4. To correct this, pitch adjustment is necessary. Loosen the pivot screw (item 2) and the
pitch screw (item 3). Move the machine forward and allow the squeegee to level itself
or adjust the angular position accordingly to achieve a uniform blade deflection.
Re-tighten screws.
5. In certain applications where a different blade set-up is required, the reinforcement
blade (item 4) may be turned upside down. The notch, which is normally on the bottom
will now be located on the topside. This allows the rear squeegee blade a larger deflection
than normal.

6
BRUSH INSTALLATION - REMOVAL
INSTALLATION
Traction Drive
1. Raise the scrubhead to the “UP” position by depressing the pedal (A)
downward as shown on Fig. 1.
2. Center brush (D) under the scrubhead shroud while lining up the center
hex drive hub and pressing the brush up until the brush engages on the
drive hub.
REMOVAL
1. Raise the scrubhead to the “UP” position by depressing the pedal (A) downward
as shown on Fig. 1.
2. Remove the brush (D) by stepping on the “BRUSH RELEASE PIN” on the top of
the scrubhead shroud as shown on Fig. 1 below.
Figure 1

7
BASE ASSEMBLY

8
BASE ASSEMBLY
Parts List
Item Part No. Qty. Description
1 200102 1 Base
2 200250 1 Axle Weldment
3 712310 2 WSR-Flat .52 x .87 x .06
4 762332 2 Wheel, 8 x 2 w/Bearing
5 711375 1 Nut-Nyloc 3/8-16
6 711578 1 WSR-Flat ½ Brass
7 712318 2 WSR-Flat ¾ x 1.12 x .12
8 712759 2 WSR-Flat 5/16 x 1.37 x .06 SS
9 712042 2 BOLT-WSR HH 5/16-18 x .62
10 711544 30 WSR-Helical 1/4
11 711203 19 BLT-HH 1/4-20 x .62
12 711505 11 WSR-Flat ¼
13 200158 1 Pin Bracket
14 200153 1 Squeegee Mechanism Assy.
15 711808 1 Cotter Pin
16 210415 1 Clevis Pin 5/16
17 260183 3 Nut ¼ NPT Nyloc
18 712564 1 Bolt-HH ¼-20 x 1 SS
19 200265 1 Back Panel Assy. - BD
20 200154 1 Electrical Box Cover
21 715286 1 Decal, CB
22 711125 4 SCR-ST-B #10 x ½
23 713002 8 BLT-HH 1/4-20 x .75
24 200345 2 Caster, 3 1/2”
25 200125 1 Battery Tray Weldment
26 210048 1 Battery Liner
27 712565 5 SCR-MC ¼-20 x .62 SS
28 200145 1 Hinge
29 200146 1 Hinge Plate
30 711228 4 Bolt-HH 5/16-18 x ¾
31 711507 4 WSR-Flat .37 x 1.12 x .06
32 200233 1 Bottom Cover
33 712822 5 SCR-THMS 10-24 x ½
34 200235 1 Hose Nylobraid 17.50
35 450076 2 Crimp Clamp 185R SS
36 200255 1 Scrubhead Assy. BD
37 200186 1 Motor Cover
38 200280 1 Motor Lift Assy.
39 712099PLT 2 Shoulder Bolt ½ x .50
40 711510 4 WSR-Flat .50 x 1.38 x .10
41 711545 4 WSR-Helical 5/16
42 200130 1 Pawl Weldment
43 200260 1 Solution Valve Assy. - BD
44 200234 1 Solution Hose 51.00
45 711316 3 Nut-Hex ¼-20
46 200129 1 Pawl Mounting Bracket
47 711575 6 WSR-Flat .312 x .75 x .06
48 200318MCH 1 Reservoir
49 712908 2 Nut-Wizz 10-24
50 260183 1 Nut-Nylon 1/4 NPT
51 833325 1 Barb 90°Elbow 3/8 x 1/4 NPT
52 82-54-A 1 Clamp
53 711106 1 SCR-ST-A 10 x .75 PL