Minuteman MC20000QP Operation manual

200X
Brush Drive
Floor Scrubber
Battery
Model: MC20000QP, CE
OPERATION SERVICE PARTS CARE
Revised 9/03

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
Tank Assembly 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
The squeegee set up is pre adjusted at the factory. Adjustments may be required to get optimum
performance for different floors and conditions.
1 Ensure that the scrubber is on a relatively flat surface. Turn on the main power switch and lower the
scrubhead assembly to the floor.
2 Lower the squeegee (item 1) to the floor. Move the machine one or two feet forward to check the rear
squeegee blade (item 8) 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, loosen the wing jam nut (item 4) in order to adjust the castor height. If the squeegee
blade is deflecting too much, the castors need to be lowered to control the down pressure. Lower the
castor by turning the exposed threaded stem (item 9) on the castor clockwise. Make the adjustment a
few turns at a time. Repeat Step 2.
5 If the blades are not deflecting enough, raise the castor by turning the stem counter clockwise to adjust
the castor height to allow more down pressure on the squeegee. Repeat Step 2.
6 Make sure that there is an even deflection on the entire length of the rear blade. Adjust the castors and
retighten the wing jam nuts to lock the castor setting in place.
7 Pitch adjustment is necessary if the outer ends on the squeegee blade does not contact the floor and
there is too much deflection in the middle area or if the outer ends are over deflected and there is no
contact in the middle.
8 To adjust the pitch, lower the squeegee to the floor. Loosen the lock nut (item 3) in the turnbuckle
assembly. Turning the turnbuckle (item 2) clockwise or counter clockwise controls the forward and
backward pitch of the squeegee. Having the rear blades deflected uniformly along the entire length is
the desired set up.
9 Repeat Step 2 until the desired set up is achieved.
10 In certain applications where a non-slotted front wiper blade (item 6) is needed, detach the squeegee
assembly by loosening the wing bolts (item 7). Unlock the clamp on the front squeegee to release the
straps and flip the blade over to the non-slotted side. Reattach straps and lock the clamp back in place.
11 You can also easily replace the rear blade by unlatching the latch (item 5) and removing the straps by
sliding them off the assembly.

6
BRUSH INSTALLATION - REMOVAL
INSTALLATION
Brush 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 1/2 Brass
7 712318 2 WSR-Flat 3/4 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 1/4
13 200158 1 Pin Bracket
14 200153 1 Squeegee Mechanism Assy.
15 711808 1 Cotter Pin
16 210415 1 Clevis Pin 5/16
17 711373 2 Nut-Nyloc 1/4-20
18 712564 1 Bolt-HH 1/4-20 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 1/2
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 1/4-20 x .62 SS
28 200145 1 Hinge
29 200146 1 Hinge Plate
30 711228 4 Bolt-HH 5/16-18 x 3/4
31 711507 4 WSR-Flat .37 x 1.12 x .06
32 200233 1 Bottom Cover
33 712822 5 SCR-THMS 10-24 x 1/2
34 200235 1 Hose Nylobraid 17.50
35 450076 3 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 1/2 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 1/4-20
46 200129 1 Pawl Mounting Bracket
47 711575 4 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
54 711583 2 WSR-Wave .78 x 1.00 x .02

9
TANK ASSEMBLY

10
TANK ASSEMBLY
Parts List
Item Part No. Qty. Description
1 200101 1 Solution/Recovery Tank
2 200147 3 Bracket, Vac Motor
3 200173 1 Float, Housing
4 210122 1 Drain Hose, Wirelock
5 200232 1 Cable, Tank
6 200251 1 Stand Pipe Assembly
7 200258 1 Muffler Assembly
8 200270 1 Hose, 3/4 Solution Drain
9 200023 1 Garden Hose Cap
10 210409 1 Fitting, Brass 3/8 MPT
11 210410 1 Fitting, Brass 3/8 FPT
12 210414 1 “O” Ring 2-113
13 250038 3 Clamp, Plastic 5/16 3305
14 260203 1 Hose Clamp 102120 Murray
15 290017 1 Gasket, Molded, Vac Motor
16 760859 1 Clamp-Hose
17 383321 1 Elbow 3/4 MPT 3/4 Barb PP
18 200022 1 3/4” MGHT x Hose Barb
19 829129 2 Clamp, Crimp 3/4 Hose
20 430050 1 Filter Screen 4 x 4
21 260155 1 Foam Float
22 200320 1 Float Valve Weldment
23 460019 1 Gasket
24 710207 1 SCR-MC 6-32 x .87 ST PL
25 200234 1 Solution Hose
26 130118 1 Solution Strainer
27 712540 3 SCR-MC #10-24 x .375 SS
28 712574 1 CR Bolt SS ¼-20 x 3”
29 712667 2 Nut-Hex 1/4-20 SS Nyloc
30 200321 1 Gasket, Shut-Off
31 712568 1 SCR-MC 1/4-20 x 2.25 SS
32 832996 1 Terminal Block 2-Pole VDE
33 833316 1 Drain Plug
34 740225 1 Vac Motor 6515-13 24V
35 760245 2 Hose Clamp 62P24
36 760343 1 Tube Hose 24/32B
37 762384 2 Bushing .277 x .375 x .37 SS
38 830062 1 Fitting Brass 90 3/8 MPT
39 710180 3 SCR-MC 1/4-20 x .75
40 711544 6 Lockwasher - Helical 1/4
41 711505 6 Washer 1/4
42 715285 1 Decal, 200X
43 200024 1 Black Vinyl Washer
44 712759 4 WSR-Flat .31 x 1.37 x .06 SS
45 310008 1 O-Ring
46 712565 3 SCR-MC 1/4-20 x .625 SS
47 805613 1 Hose Cuff, Grey Vinyl
48 320269 1 Strap, Drain Plug Retaining

11
UPPER ASSEMBLY
Parts List
Item Part No. Qty. Description
1 200160 1 Tank Assembly
2 200178 2 Gasket, Lid
3 200136 1 Gasket, Solution Lid
4 200103 1 Tank Lid
5 712120 2 Shoulder Bolt 1/2 x 2
6 710178 6 SCR-MC 1/4-20 x 1/2
7 711503 2 WSR-Flat #10
8 711125 5 SCR-ST-B #10 x 1/2
9 760286 1 Wire Formed Hook
10 200176 1 Dump Hose Bracket
11 200170 1 Console Assy. - Brush Drive
12 715284 1 Decal, Solution Control
13 383367 1 Spring Clip
14 430053 1 Solution Control Cable
15 711228 6 Bolt-HH 5/16-18 x 3/4
16 711545 6 WSR-Helical 5/16
17 711575 6 WSR-Flat 5/16
18 200032 1 Console Back Cover Weldment
19 450054 1 Vacuum Recovery Hose
20 200152 1 Solution Control Bracket

12
CONSOLE ASSEMBLY
Parts List for 200170
Item Part No. Qty. Description
1 200104 1 Console
2 200134 1 Console Bracket Right
3 200135 1 Console Bracket Left
4 200151 1 Hinge Bracket Weldment
5 200299 1 Dashboard ASM BD
6 712320 4 WSR-Nylon .22 x .45 x .04
7 712540 8 SCR-MC #10-24 x .37 SS
8 711575 6 WSR-Flat .31 x .75 x.06
9 711545 6 WSR-Helical 5/16
10 711228 6 Bolt-HH 5/16-18 x .75
11 711505 2 WSR-Flat 1/4
12 200240 1 Squeegee Lift Assy.
13 711544 6 WSR-Helical 1/4
14 711203 6 Bolt-HH 1/4-20 x .62

13
MOTOR LIFT ASSEMBLY
Parts List
Item Part No. Qty. Description
1 200120 1 Base Plate Weldment
2 260036 2 Pin
3 712310 4 WSR-Flat .52 x .88 x .06
4 711527 6 WSR-Flat 5/8 x 1.12 x .12
5 762340 2 Oilite Bushing 1/2
6 260041 4 Oilite Flanged Bushing 1/2
7 200115 1 Lift Arm Weldment
8 711713 2 E-Ring 1/2
9 710207 2 SCR-MC 6-32 x .87
10 740128 1 Microswitch
11 711430 1 Tinnerman Clip
12 833638 2 Brass Stud
13 711368 2 Wing Nut
14 740132 2 Insulator Glastic
15 711546 2 WSR-Helical 3/8
16 713041 2 Bolt-HH 3/8-16 x 3/4
17 711376 1 Nut-Nyloc 1/2-13
18 260137 1 Compression Spring
19 200110 1 Spring Bracket
20 200149 1 Adjustment Rod
21 200116 1 Pedal Arm Weldment
22 210142 1 Pedal Pad
23 450040 2 Elbow 3/8 Barb x 3/8 MPT
24 809413MCH 1 Solution Valve Machined
25 829463 1 WSR-Flat SS
26 828975 1 WSR-Neoprene .75 x 1.5 x .09
27 200259 1 Valve Bracket
28 711513 1 WSR-Flat .689 x 1.06 x .029 SS

14
SCRUBHEAD ASSEMBLY
Parts List
Item Part No. Qty. Description
1 200109 1 Motor Platform Weldment - BD
2 200187 1 Brush Shroud Weldment
3 200194 1 Pin, Brush Release
4 200294 2 Shroud Strap
5 210066 1 Retainer Bolt
6 200293 1 Shroud Skirt
7 260183 1 Nut 1/4 NPT Nylon
8 833621 1 Key, 1/4 x 1/4 x 1.00
9 430035 1 Drive Hub
10 500033 1 Locking Screw
11 710986 4 SCR-SC 3/8-16 x 1.00
12 711203 3 SCR-MC 1/4-20 x .62
13 711544 3 WSR-Helical 1/4
14 711519 1 WSR-Flat .25 x 1.01 x .06
15 711517 2 WSR-Flat .77 x 1.37 x .03
16 740209 1 Gear Motor 24V
17 833102 1 Spring
18 833325 1 Hose Barb 90° Nylon
19 711578 2 WSR-Flat 1/2 Brass
20 712310 8 WSR-Flat .52 x .87 x .06
21 430085 2 Bumper Wheel
22 712759 2 WSR-Flat .31 x 1.37 x .06 SS
23 710975 2 SCR-SC 5/16-18 x .87
24 712560 8 SCR-MC 1/4-20 x .50 Nyloc
25 200029 1 Pitch Adj. Bar Weldment
26 711334 1 Nut-Hex 1/2-13
27 710754 1 Bolt-HH 1/2-13 x 2 3/4
28 711505 1 WSR-Flat 1/4
29 711373 1 Nut-Nyloc 1/4-20
30 743425 1 Ground Wire

15
BACK PANEL
DASHBOARD
Parts List for 200299
Item Part No. Qty. Description
1 200179 1 Dashboard Plate 2 715283 1 Decal 200 Dashboard 3 740216 1 Battery Gauge 4 740711CE 3 Switch Dreefs w/Splashguard 5 742202 1 Disconnect Switch 125A
Parts List for 200265
Item Part No. Qty. Description
1 200124 1 Backpanel Weldment 2 742749 2 Circuit Breaker Plug 3 711368 2 Wing Nut, ¼-20 4 740132 2 Insulator (Glastic) 5 742748 2 Boot, Circuit Breaker 6 740247 1 Circuit Breaker 30 7 742000 2 Diode Assembly 8 740549 1 Circuit Breaker 50 9 711210 2 SCR-HH ¼-20 x 1 ¼
10 740159 1 CB175 Red Housing Only
11 743260 1 Wire Harness, 200X BD
12 788147 2 Solenoid 24VDC 13 833638 2 Brass Stud 14 711425 6 Whiz-Nut ¼-20

16
SQUEEGEE LIFT SQUEEGEE MECHANISM
Parts List for 200240
Item Part No. Qty. Description
1 200239 1 Panel Cover Weldment 2 715603 1 Decal Squeegee Lift 3 200241 1 Squeegee Lift Cable 4 200261 1 Inner Arm Weldment 5 200017 1 Arm Squeegee Lift Weldment 6 712081 1 Bolt, Shoulder 5/16 x .75 7 831965 1 Clevis Pin 3/8 8 809311 1 Cotter Pin 7/64 x 1” 9 881009 1 Yoke
10 881002 1 Clevis Pin 5/16
11 711808 1 Cotter Pin #13
12 712041 1 Bolt-Shoulder 5/16 x .44 13 200038 1 Handle Weldment 14 711642 1 3/16 x 1.00 Roll Pin 15 711504 2 WSR-Flat 1/4, SS
Parts List for 200153
Item Part No. Qty. Description
1 200144 1 Spring Housing Weldment 2 200300 1 Yoke Weldment 3 210375 1 Swivel Pin 4 210391 2 Return Spring SS 5 210415 1 Clevis Pin .31 x 1.7 11-097 6 260041 4 Oilite Flange Bushing 7 710180 1 SCR-MC 1/4-20 x .75 ST PL 8 711544 1 WSR-Helical ¼ 9 711519 1 WSR-Flat .25 x 1.01 x .06
10 711808 1 Cotter Pin - Hair #13
11 712320 4 WSR-Nylon .22 x .45 x .04
12 900080 1 Spring, Torsion RH 13 900081 1 Spring, Torsion LH 14 200159 1 Pin 15 712536 4 SCR-MC 10-24 x .62 SS 16 712564 1 BLT-HH ¼-20 x 1.00 SS

17
Parts List for 200348
Item Part No. Qty. Description
1 200064 2 Caster Wheel 3/8”-16 x 1-5/8”
2 200065 1 Castor Support Bracket
3 200169 1 200X Sq Lift Weldment New
4 200342 1 Squeegee Brkt Weldmt, 200X
5 200344 1 Top Plate Weldmt, 200X LH
6 200347 1 Top Plate Weldmt, 200X RH
7 210153 2 Roller Wheel
8 220249 2 Wing Bolt 1/2-13 x .75”
9 260066 2 Oilite Bushing
10 260242 1 Front Squeegee Blade 260
11 260243 1 Rear Squeegee Blade 260
12 260248 1 260 Sq. Casting w/Roll Pin
13 260339 1 Strap - Rear Latch 260
14 260344 1 Strap - Front Stop 260
15 260346 1 Strap - Rear Catch 260
16 281074 1 Squeegee Toggle Clamp, 2800
17 281075 1 Squeegee Latch, 2800
18 281740 1 Stop Bar
19 320308 1 Strap-Front Clamp 320
20 383424 1 Mounting Bracket-Right
21 383425 1 Mounting Bracket-Left
Item Part No. Qty. Description
22 710530 7 SCR-MC 8-32 x .50 BR
23 711026 5 Nut, Hex 8-32 Nyloc SS
24 711241 4 SCR-Hex 3/8-16 x .75” ZP
25 711367 2 Nut-Wing 3/8-16 ST PL
26 711504 4 WSR-Flat 1/4 ID SS
27 711507 4 WSR-Flat .37 x 1.12 x .06
28 711509 1 WSR-Flat 1/2 (.54 x 1.08 x .087)
29 711524 2 WSR-Wave .52 x .87 x .01
30 711546 6 WSR-Helical 3/8
31 711592 2 WSR-Nylon .50 x 1.06 x .06
32 711668 3 Cleavis Pin, 3/8 x 1 11-141
33 711713 2 Retaining Ring - “E” Type Ext .500
34 711808 3 Cotter Pin - Hair #13
35 712301 6 WSR-Flat .87 x .37 x .06
36 712564 4 Bolt-HH 1/4-20 x 1.00 SS
37 712667 2 Nut, Hex 1/4-20 Nyloc SS
38 712680 1 Nut-Hex 5/16-18 SS
39 712758 4 WSR-Helical 1/4 SS
40 750689 1 Adjustment Stud
41 762022PLT 1 Nut, Adjusting (LH)
42 762257PLT 1 Nut, Adjusting (RH)