Minuteman E17 Parts list manual

Parts and Instruction Manual
E17/E20 Scrubber

Parts
and Instruction Manual
This manual is furnished with each new MINUTEMAN E17/E20. This provides the necessary operating and
preventive maintenance instructions. Operators must read and understand this manual before operating or
servicing this machine.
This machine was designed to give you excellent performance and efficiency. For best results and minimal cost,
please follow the general guidelines below:
• Operate the machine with reasonable care.
• Follow the manufacturers suggested maintenance instructions as provided in this booklet.
• Use original Minuteman supplied parts.
Current (Max)
Voltage, Batteries
Battery Capacity (Lead Acid)
Battery Capacity (Gel)
Sound Level
Gross Weight (with Batteries)
Gross Weight (w/o Batteries)
Squeegee Width
Working Grade Transport
Working Grade Cleaning
TECHNICAL SPECIFICATIONS
Model E17/E20
Model No. E17BD / E17BDCE / E17BDQP / E17BDQPCE
E17BDQPG / E17BDQPGCE
E20BD / E20BDCE / E20BDQP / E20BDQPCE
E20BDQPG / E20BDQPG
32 amps
24V
105AH @ 20Hr
100AH @ 20Hr
69 dBA
310 lbs (141 kg)
200 lbs (91 kg)
33” (84cm)
2%
2%
Working Width E17
Working Width E20
Working Speed
Vacuum Flow
Vacuum Waterlift
Vacuum Power
Brush Speed
Solution Tank Capacity
Recovery Tank Capacity
17” (43cm)
20” (60cm) E20
2.5 mph (4 km/hr)
65 cfm (110 m³/hr)
45 in.H2O (112 mbar)
3/4hp (560W)
180 RPM
12 gal (45 ltr)
13 gal (50 ltr)

Parts
and Instruction Manual
Table of Contents
Important Safety Instructions............................................................................................................ 1
During Operation............................................................................................................................. 1
When Servicing or Maintaining Machine ......................................................................................... 1
Inspection & Unpacking ..................................................................................................................... 2
Electrical.............................................................................................................................................. 2
Batteries .............................................................................................................................................. 2
Operator Responsibility..................................................................................................................... 2
Machine Overview .............................................................................................................................. 3
Front................................................................................................................................................ 3
Rear ................................................................................................................................................ 3
Control Panel .................................................................................................................................. 4
The Control Panel............................................................................................................................... 4
Bail Handle...................................................................................................................................... 4
Handle Adjustment Knobs ............................................................................................................... 4
Key Switch ...................................................................................................................................... 4
Squeegee Lift Lever ........................................................................................................................ 4
Solution Control Lever..................................................................................................................... 4
Battery Gauge ................................................................................................................................. 4
Charge Status Indicator................................................................................................................... 4
Optional Hour Meter ........................................................................................................................... 5
Optional Solution Solenoid................................................................................................................ 5
Circuit Breakers.................................................................................................................................. 6
Battery Compartment ......................................................................................................................... 6
Rear Squeegee.................................................................................................................................... 7
Handle Adjustment ............................................................................................................................. 8
Horizontal Adjustment ..................................................................................................................... 8
Angle Adjustment ............................................................................................................................ 8
Solution Tank Drain Hose / Level Indicator ......................................................................................9
Solution Tank Drain Hose................................................................................................................ 9
Solution Level Indicator................................................................................................................... 9
Solution Fill Filter ............................................................................................................................... 9
Brush Load / Unload ........................................................................................................................ 10
Loading Brush ............................................................................................................................... 10
Unloading Brush............................................................................................................................ 10
Screened Float.................................................................................................................................. 11
Screened Float Removal .................................................................................................................. 11
The E17/E20 ...................................................................................................................................... 12
Machine Operation ........................................................................................................................... 13

Parts
and Instruction Manual
Optional Equipment Operation........................................................................................................ 13
Hour Meter ................................................................................................................................... 13
Solution Solenoid .......................................................................................................................... 13
After Use............................................................................................................................................ 14
Maintenance...................................................................................................................................... 14
General Machine Troubleshooting .................................................................................................. 15
Exploded Views ................................................................................................................................ 16
Main Assembly .............................................................................................................................. 16
Main Assembly BOM..................................................................................................................... 17
Brush Drive Base Assembly .......................................................................................................... 18
Brush Drive Base Assembly BOM................................................................................................. 19
E17/20 Base Assembly ................................................................................................................. 20
Chassis Assembly ......................................................................................................................... 21
Chassis Assembly BOM................................................................................................................ 22
Solution Valve Assembly ............................................................................................................... 23
Solution Tank Assembly ................................................................................................................ 24
Lift Pedal Stop Assembly............................................................................................................... 25
Recovery Tank Assembly .............................................................................................................. 26
Recovery Tank Assembly BOM ..................................................................................................... 27
Handle Assembly .......................................................................................................................... 28
Battery Tray Assembly .................................................................................................................. 29
Electrical Box Assembly ................................................................................................................ 30
Electrical Box Assembly BOM ....................................................................................................... 31
Electrical Box Cover Assembly...................................................................................................... 32
Vac Motor Assembly...................................................................................................................... 33
17” Brush Deck Assembly ............................................................................................................. 34
17” Brush Deck Assembly BOM .................................................................................................... 35
20” Brush Deck Assembly ............................................................................................................. 36
20” Brush Deck Assembly BOM .................................................................................................... 37
E17 Brush Hub Assembly.............................................................................................................. 38
E20 Brush Hub Assembly.............................................................................................................. 39
Rear Squeegee Assembly............................................................................................................. 40
Squeegee Mechanism Assembly .................................................................................................. 41
Wiring Diagrams............................................................................................................................ 42
Minuteman International Made Simple Commercial Limited Warranty........................................ 45

Parts and Instruction Manual
Page 1
Operators must read and understand this manual before operating or maintaining this
machine.
Do not operate this machine in flammable or explosive areas.
Thismachine isdesigned solely forscrubbing dirtand dustin anindoor environment. Minuteman
does not recommend using this machine in any other capacity.
The following information below may cause a potential hazard to the operator and equipment.
Read this manual carefully and be aware when these conditions can exist. Take necessary
steps to locate all safety devices on the machine and train the personnel operating the machine.
Report any machine damage or faulty operation immediately.
Do not use machine if it is not in proper operating condition.
Keep hands and feet clear of moving parts while machine is in operation.
Make sure all safety devices are in place and operate properly. All covers, doors and latches
must be closed and fastened before use.
During operation, attention should be paid to other persons in the work area and especially if
small children are present.
Electricmotors andcomponentscancause anexplosion whenoperatednearexplosivematerials
or vapor. Do not operate this machine near flammable materials such as solvents, thinners,
fuels, grain dust, etc.
Store or park this machine on a level surface only. To prevent unauthorized use, machine should
be stored or parked with the key removed.
This machine isdesigned for leveloperation only. Do not operate on ramps or inclines greater
than 2%.
This machine is not suitable for picking up hazardous dusts.
Use caution when moving this machine into areas that are below freezing temperatures. Any
water in the tanks or hoses can cause damage to the machine.
Stop on level surface.
Disconnect the power to the machine by pulling the red Battery Connector located under the
recovery tank near the batteries.
Avoid moving parts. Do not wear loose jackets, shirts, or sleeves when working on machine.
Avoid contact with battery acid. 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.
Do not clean machine with a pressure washer.
Authorized personnel must perform repairs and maintenance. Use Minuteman supplied
replacement parts. SAVE THESE INSTRUCTIONS
Important Safety Instructions
For Safety During Operation
For Safety When Servicing or Maintaining Machine

Parts and Instruction Manual
Page 2
Carefully unpack and inspect your E17/E20 Walk-Behind Scrubber for shipping damage. Follow
unpacking instructions on shipping pallet. Each unit has been tested and thoroughly inspected before
shipment.Any damage is the responsibility of the delivery carrier who should be notified immediately.
This machine is battery operated and designed to operate on 24 volts DC (2) 12-volt batteries.
The recommended batteries are rated 105Ah (Minuteman P/N 956712) or 100Ah (Minuteman P/N
956100). We do not recommend mixing AMP hour capacities. Alternate battery sets can be used if
they equal physical size and capacity.
Read this manual carefully before operating this machine.
The operator is responsible in taking care of the daily maintenance and check ups of the machine to
keep it in good working condition. The operator must inform the service mechanic or supervisor when
the scheduled maintenance intervals are required as stated in the MAINTENANCE section of this
manual.
Before starting familiarize yourself with the machine and its controls (see “Machine Overview, Front”,
“Machine Overview, Rear”,“Control Console” diagrams).
Inspection & Unpacking
Electrical
Batteries
Operator Responsibility

Parts and Instruction Manual
Page 3
A
B
C
D
G
H
F
E
A BAIL HANDLE
B SQUEEGEE LIFT LEVER
C SOLUTION CONTROL LEVER
D RECOVERY TANK DRAIN HOSE
E ONBOARD CHARGER CORD
F CIRCUIT BREAKERS
G RECOVERY HOSE
H CONTROLPANEL
I SOLUTION TANK DRAIN HOSE / LEVEL INDICATOR
J BRUSH LIFT PEDAL
K REAR SQUEEGEE
Machine Overview - Rear
A
B
C
D
E
F
G
H
A CUP HOLDER
B SOLUTION FILL PORT
C RECOVERY TANK LID
D RECOVERYTANK
E BRUSH DECK
F FRONT WHEEL
G REAR CASTER
H SOLUTION TANK
Machine Overview - Front
I
J
K
K

Parts and Instruction Manual
Page 4
Machine Overview - Control Panel
A BAIL HANDLE
B HANDLE ADJUSTMENT KNOB
C KEY SWITCH
D SQUEEGEE LIFT LEVER
E SOLUTION CONTROL LEVER
F BATTERY GAUGE
G CHARGE STATUS INDICATOR
A
B
C
D
F
E
For operator ergonomics, the control panel houses all the primary functions. Controls are grouped in a central area
at the rear of the machine.
Bail Handle
(A) When the scrubdeck is lowered to the floor, The Bail Handle Enables the brush motor and moves the machine
forward once depressed. This also allows the operator to automatically load the brush when the scrubdeck is
lowered.
Handle Adjustment Knobs
(B) Allows the handle position to be raised or lowered.
Key Switch
(C) Controls the machine’s power (Brush Unload/Off/On) with a key for safety. This switch, when turned counter
clock-wise, operates the auto brush unload when scrubdeck is in the raised position. When it is turned to the on
position, the machine will operate.
Squeegee Lift Lever
(D) When actuated to the top position, the squeegee is lowered and the vacuum motor is turned on. When locked
in the bottom position, the squeegee is raised and the vacumm motor shuts off.
Solution Control Lever
(E) This lever controls the rate at which solution is put down. Moving the lever up will increase the amount of
solution. Moving the lever down will decrease the solution rate. Moving the lever all the way down shuts off solution
flow.
Battery Gauge
(F) This gauge displays the remaining battery charge.
Charge Status Indicator
(G) This gauge displays the status of the batteries during charging. The gauge has a readout of 3 LEDs. 1 Green,
1 yellow, 1 Red. Green indicating a full charge, Red indicating the batteries are charging.
The Control Panel
G

Parts and Instruction Manual
Page 5
Optional Hour Meter
Minuteman offers an optional hour meter for the E17/E20. The optional kit replaces the
power cord mounting bracket at the rear of the machine with one that contains an hour
meter.
Kit# K-E1720HM
Optional Solution Solenoid
Minuteman offers an optional solution solenoid for the E17/E20. The optional solenoid
automatically turns off the solution flow when the brush motor is not active.
Kit# K-E1720S

Parts and Instruction Manual
Page 6
Circuit Breakers
A MAIN CONTROL BREAKER
B BRUSH MOTOR BREAKER
C VACUUM MOTOR BREAKER
BCA
The circuit breaker is located at the bottom of
the back panel of the machine.The 4-amp
breaker (A) protects the main controls circuit,
The 30-amp breaker (B) protects the brush
motor circuit, and the 20-amp breaker (C)
protects the vacuum motor circuit.
Battery Compartment
The battery compartment is located under the re-
covery tank. The Battery compartment can be ac-
cessedfor servicingandmaintenance bytilting the
recovery tank (make sure recovery tank has been
drained before tilting). The battery compartment
containstwo12-volt batteriesconnected in series.
Connectthebatteriesaccordingto thebatterycon-
nectiondiagram(seediagram).Therecommended
batteries are 105Ah (Minuteman P/N 956712) or
100Ah(minutemanP/N 956100) Gel. Thebattery
tray may be drained if neccessary using the or-
ange drain hose located above the rear caster on
the right side of the machine.
If any of the functions above are not
operating, check if the circuit breaker buttons
have tripped. Press to reset.

Parts and Instruction Manual
Page 7
Rear Squeegee
The rear squeegee is the main element of the conduit that transfers the spent solution
into the recovery tank.A daily maintenance check of this component is essential to have
optimum machine performance. The blade configuration has two usable edges and can
be turned inside out to utilize the opposite side of the blade. If streaking occurs it is time
to turn the blade to good edge or replace if this has already been done. The blade can be
accessed by removing the 6 adjusting nuts (A), 2 bumper wheels (B), and the squeegee
mounting bracket (E).
A
B
C
D
E
A Adjusting Nut (6)
B Squeegee Bumper Wheel (2)
C Squeegee Casting Assembly
D Squeegee Blade
E Squeegee Mounting Bracket

Parts and Instruction Manual
Page 8
The E17/E20 handle was designed with operator comfort in mind. The angle and horizontal
position of the handle can be adjusted to suit the needs of the operator.
The handle angle can be adjusted without tools by
looseningtheangle adjustment knob (A) on each
sideand rotatingthehandle tothe desiredposition.
There are 5 angular positions 11.25° apart for a
total of 45° between the minimum and maximum
position.
Angle Adjustment
Handle Adjustment
A
12
3
Plate Position 1
(Shipping Position)
Plate Position 2
Plate Position 3
(Fully Extended)
Horizontal Adjustment
The horizontal position can be adjusted by
removing the 4 mounting bolts (B) (2 each side)
witha 9/16”socket andslidingthemounting plate
(P) tooneofthe 3availablepositions. Themachine
is shipped from the factory in position 1.
PB

Parts and Instruction Manual
Page 9
Solution Tank Drain Hose / Level Indicator
Thesolution tankmaybe drainedby removing
the Solution Tank Drain Hose (A) from the
Hose Barb (B) and routing the hose to a floor
drain.
AB
The Solution Tank Drain Hose also serves as a
water level indicator for the solution tank. The
amount of water remaining in the solution tank
canbeseenthroughthecleardrain hose. Level
markers molded into the solution tank are
positioned at 1/4, 1/2, 3/4, and full levels.
Solution Tank Drain Hose
Solution Level Indicator
The Solution Fill Filter (B) should be
cleanedregularly. To remove,simplyopen
theSolution Tank Lid (A) andpull thefilter
out.
Solution Fill Filter A
B

Parts and Instruction Manual
Page 10
Brush Load / Unload
To load the brush, first center
the E17/E20 brush deck over
the scrub brush.
Lower the scrub deck by
releasing the deck lift pedal. Withthekeyturnedon, pullthe
bail handle to spin the scrub
brush onto the scrubdeck.
Loading Brush
Unloading Brush
Tounloadthebrush,first liftthe
scrub deck by pressing down
on the deck lift pedal . Make
sure the pedal is in the “home”
position shown below.
If done correctly the brush
should release from the scrub
deck and fall to the floor.
Momentarily(1to2 seconds)
turn the key to the “Brush
Unload” position.
Note: The brush will release
only when the key returns to the
off position (O).

Parts and Instruction Manual
Page 11
Screened Float
Iftherecoverytank(C) isoverfilledor alargeamount
of foaming is present, the screened float (B) blocks
the vacuum intake inside the tank protecting the
vacuum motor and internal electronics from water
damage. It is essential to keep the float in working
order through regular maintenance.
The float should be cleaned daily by thoroughly
rinsing with a hose. Removal of the screened float
is not necessary for daily maintenace.
At least once a month the screened float should be
completely removed, cleaned, and checked for any
damage to the seal or metal screen.
WARNING: Damage to the machine may occur
if operated without the screened float properly
in place.
C
B
A
Screened Float Removal
Thescreenedfloatispositionedbetweenthevacuum
manifold (A) and recovery tank (C). The screened
float (B) can be accessed by removing the 1.5” bolt
(D) and two 1.25” bolts (E) that attach the manifold
to the recovery tank using a 7/16” socket.
A
F
B
D
E
A Vacuum Manifold
B Screened Float
C Recovery Tank
D 1.5” Bolt
E 1.25” Bolt (2)
F Helical Washer (3)
G Flat Washer (3)
G
E

Parts and Instruction Manual
Page 12
The E17/E20
This machine was designed with total operator comfort and ease of use in mind. All machine
components have been designed as a total system to efficiently clean dirty floors.The E17/E20 has
twoavailable scrub headtypes andsizes tofitspecific applications.Please contactyour Minuteman
representative for specific recommendations for the correct scrub head type, size, and brush type
and chemical applications.
Before using the machine, always perform the following steps to ensure proper machine operation:
-Check under the machine for leaks.
-Check the rear squeegee for wear and damage.
-Check the solution and recovery tank levels.
After using the machine, always perform the following steps:
-Check the battery charge level. Charge batteries if necessary.
When charging batteries, extra precaution is required:
Battery acid can cause burns. When working on or around batteries, always wear protective
clothing and safety glasses. Remove metal jewelry. Do not lay tools or metal objects on top of the
batteries.
Charging batteries generate explosive gasses. DO NOT CHARGE BATTERIES WHEN OPEN
FLAMES OR SPARKS ARE PRESENT. DO NOT SMOKE. Chargethebatteries ina well-ventilated
area. Fluid levels should be checked before and after charging and maintained at the proper levels.
If low, add distilled water until the metal plates are covered. If the machine is not used for an
extended period of time, batteries should be kept fully charged with a boost charge once a week.
-Check for wire, string, or twine wrapped around the scrub brushes.
-Check the rear squeegee for wear and damage.
-Check the rear squeegee suction hose for obstructions.
-Drain and clean the recovery tank.
-Check under the machine for leaks.
-Check the service records to determine maintenance requirements.
WARNING!
Be sure you understand the machine controls and their functions.
While on ramps or inclines, avoid sudden stops when tanks are filled.
Avoid abrupt sharp turns. Slow down driving speed when going downhill.

Parts and Instruction Manual
Page 13
Machine Operation
To Turn on Machine:
Turn key to operate position ( I )
To Turn on Vacuum:
Lower squeegee into operate position, vacuum motor will turn on automatically.
To Turn on Brush Motor:
Move brush lift pedal from the “home” (down) position to the operating position (up). Depress
the operator bail handle. Brush motor will turn on and assist to propel the machine forward.
To Turn on Cleaning Solution:
Move solution lever from closed (down) position up to the desired flow position.
To Unload Brush/Pad Driver
Raise the brush deck with the deck lift pedal, foot pedal must be in its “home” position for the
brush to unload. Turn operator keyswitch to the Brush Unload position for approximatedly 1-2
seconds, then release keywitch back to off position (O). Brush will release and fall to the floor.
To Charge Batteries:
When the battery status indicator reaches the red zone the batteries need to be recharged.
Take the machine to a well ventilated area, unwind the battery charger power cord from the
electricalbox coverand plugintoan appropriatepower source. Afterapproximately10 seconds
the battery charge status indicator will turn on. Be sure to check the battery water levels as
recommended.
WARNING: Charging batteries generates explosive gasses. Do not charge batteries when open
flames or sparks are present. Do not smoke. Charge the batteries in a well-ventilated area.
Optional Equipment Operation:
Hour Meter:
Hour meter will automatically record operating time of the brush motor.
Solution Solenoid:
Water solenoid will operate when the brush motor is turned on. The solution lever must be
moved to the desired operating position, but does not need to be moved to the closed
position when stopping for brief periods.
CAUTION: Make sure brush deck is clear of all personnel and obstructions before operating
Brush Unload.
NOTE: When you no longer want solution or stop the machine for an extended period
of time, you must move the solution lever back to the closed (down) position. Otherwise,
solution will continue to flow onto the floor.

Parts and Instruction Manual
Page 14
After Use
When finished scrubbing, lift the scrub deck and turn the solution lever off, water flow will cease. Lift the rear
squeegee (the vacuum motor will turn off). Move the machine to a service area for daily maintenance and
review items that may need service.
Empty the solution tank, by disconnecting the solution tank drain hose from the barb fitting over a drain.
Rinse the tank with clean water to prevent any build-up of dried chemicals that could clog the plumbing.
Empty and clean the recovery tank by flushing with a hose. Be sure to also clean the float shut off screen.
Remove the brushes or pad holders and rinse them in warm water and hang to dry.
Remove the rear squeegee, rinse with warm water and reinstall after cleaning.
Check the maintenance schedule in the next section and perform any required maintenance before storing
the machine.
Store the machine indoors in a clean dry place. Keep from freezing. Leave solution and recovery tank lids
open for ventilation to prevent odor build-up.
Turn Key switch OFF (O) and remove key.
Have a qualified service technician check the vacuum motor carbon motor brushes once a year or after 300 operating hours.
The brush motor carbon brushes should be checked every 500 hours or once a year.
NOTE: Refer to the Service Manual for more detail on maintenance and service repairs.
Regularly scheduled lubrication of certain machine parts should be performed to insure trouble-free
operation of the machine. Apply a generous amount of grease into the fittings on the machine until grease
seeps out around the bearings.
The grease points are listed below:
Rear squeegee caster wheel axle (2)
Rear squeegee caster swivel (2)
Apply lubricant or light machine oil to lubricate the:
Rear squeegee general pivot points
Scrub deck linkages
Daily Weekly Monthly Yearly
Charge Batteries
Check Each Battery Cell(s)
Water Level
Lubrication –
Grease Fittings Check Carbon Brushes
Check/Clean Tanks
& Hoses Inspect Scrub Housing Skirts
Check/Clean/Rotate
the Brushes/Pads Inspect and Clean Solution
Filter
Check/Clean the
Squeegee
Check/Clean
Vacuum Shut-Off
Float in Recovery
Tank
Maintenance

Parts and Instruction Manual
Page 15
Problem Possible Cause Remedy
Worn or torn squeegee blades Rotate or replace blades
Recovery tank full Empty recovery tank
Recovery tank drain hose leak Secure drain hose cap or replace
Recovery tank lid gasket leak Replace gasket lid cover properly
Debris caught in squeegee Clean squeegee
Vacuum hose clogged Remove debris and flush hose
Using too much solution Adjust solution control valves
Poor water pick-up
Recovery hose to squeegee or recovery
tank disconnected or damaged Reconnect or replace recovery hose
Worn brushes Rotate or replace brushes
Wrong brush or cleaning chemical Consult Minuteman
Debris caught on scrub brushes Remove debris
Moving machine too fast Slow down
Not using enough solution Adjust solution flow setting
Poor scrubbing performance
Low battery charge Recharge batteries
Solution tank empty Fill solution tank
Solution lines, valves, filter or spray jets
clogged Flush lines, and clean solution filter and spray jets
Inadequate solution flow or
no solution to the floor
Solution Lever in down position Move lever up
Tripped Control Power circuit breaker Reset breaker
Batteries have low charge Recharge batteries
Machine does not operate
Battery charger operating Unplug battery charger when charge
is complete
Recovery tank full Empty recovery tank
Excessive foaming in recovery tank. Empty recovery tank.
Use less or change chemical.
Use defoaming agent.
Carbon Brushes worn Replace carbon brushes
Vacuum switch disconnected Connect wiring
Tripped vacuum motor circuit breaker Reset breaker
Broken vacuum limit switch Replace switch
Vacuum motor does not turn
on
Squeegee in raised position Lower squeegee
Foot pedal not in “home” position Place pedal in notch
Tripped brush motor circuit breaker Reset breaker
Broken brush motor switch Replace switch
Brushes do not unload
Damaged brush block or drive hub Replace
General Machine Troubleshooting

Parts and Instruction Manual
Page 16
Exploded Views
Main Assembly