Nobles Tuff Scrub 3300 Product manual

Rider Scrubber
Tuff Scrub 3300
Model No.:
606993
606994 - Pac
609237 - Can. Pac
Operator and Parts Manual
608596
Rev. 01 (06-00)
CUSTOMER SERVICE: 1-800-365-6625
FAX: [phone]
NOBLES
12875 RANSOM STREET
HOLLAND MI 49424 U.S.A.
TM
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OPERATION
2sTuff Scrub3300 (06–00)
This manual is furnished with each new model. It
provides necessary operating and preventative
maintenance instructions and an illustrated parts list.
Read this manual completely and understand the
machine before operating or servicing it.
When ordering replacement parts, use the parts list
section in this manual. Before ordering parts or
supplies, be sure to have your machine model number
and serial number available. Parts and supplies may
be ordered by phone or mail from any authorized
Service Center or Distributor.
This machine will provide excellent service. However,
the best results will be obtained at minimum costs if:
The machine is operated with reasonable care.
The machine is maintained regularly - per the
machine maintenance instructions provided.
The machine is maintained with manufacturer
supplied or equivalent parts.
MACHINE DATA
Please fill out at time of installation for future reference.
ModelNo.-
Install. Date -
Serial No.-
2000 Tennant Company Printed in U.S.A.
Nobles is a registered United States trademark of Tennant Company.
Tuff Scrub is a United States trademark of Tennant Company.
TABLE OF CONTENTS
SAFETY PRECAUTIONS 3. . . . . . . . . . . . . . . . . . . . . . .
SAFETY LABELS 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MACHINE COMPONENTS 5. . . . . . . . . . . . . . . . . . . . .
CONTROL CONSOLE SYMBOLS 6. . . . . . . . . . . . . .
MACHINE INSTALLATION 7. . . . . . . . . . . . . . . . . . . . .
UNCRATING MACHINE 7. . . . . . . . . . . . . . . . . . . . . . .
INSTALLING BATTERIES 7. . . . . . . . . . . . . . . . . . . . .
MACHINE SETUP 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ATTACHING SQUEEGEE ASSEMBLY 8. . . . . . . . . .
ADJUSTING SQUEEGEE ASSEMBLY 8. . . . . . . . . .
INSTALLING BRUSHES/PAD DRIVERS 9. . . . . . . . .
FILLING SOLUTION TANK 10. . . . . . . . . . . . . . . . . . . .
MACHINE OPERATION 10. . . . . . . . . . . . . . . . . . . . . . . .
PRE–OPERATION CHECKS 10. . . . . . . . . . . . . . . . . . .
OPERATING MACHINE 10. . . . . . . . . . . . . . . . . . . . . . .
EMERGENCY STOPPING 12. . . . . . . . . . . . . . . . . . . . .
WHILE OPERATING MACHINE 12. . . . . . . . . . . . . . . .
BATTERY METER 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
MACHINE CIRCUIT BREAKERS 13. . . . . . . . . . . . . . .
HOUR METER 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRAINING TANKS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRAINING RECOVERY TANK 13. . . . . . . . . . . . . . . . .
DRAINING SOLUTION TANK 14. . . . . . . . . . . . . . . . . .
REMOVING BRUSHES/PAD DRIVERS 14. . . . . . . . .
CHARGING BATTERIES 15. . . . . . . . . . . . . . . . . . . . . . .
MACHINE MAINTENANCE 16. . . . . . . . . . . . . . . . . . . . .
DAILY MAINTENANCE 16. . . . . . . . . . . . . . . . . . . . . . . .
WEEKLY MAINTENANCE 16. . . . . . . . . . . . . . . . . . . . .
MONTHLY MAINTENANCE 16. . . . . . . . . . . . . . . . . . . .
QUARTERLY MAINTENANCE 17. . . . . . . . . . . . . . . . .
BATTERY MAINTENANCE 17. . . . . . . . . . . . . . . . . . . .
STEERING CHAIN MAINTENANCE 17. . . . . . . . . . . . .
BRAKE ADJUSTMENT 18. . . . . . . . . . . . . . . . . . . . . . . .
JACKING MACHINE 18. . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSPORTING MACHINE 19. . . . . . . . . . . . . . . . . . .
STORING MACHINE 19. . . . . . . . . . . . . . . . . . . . . . . . . . .
RECOMMENDED STOCK ITEMS 19. . . . . . . . . . . . . . .
TROUBLESHOOTING 20. . . . . . . . . . . . . . . . . . . . . . . . . .
MACHINE SPECIFICATIONS 22. . . . . . . . . . . . . . . . . . .
MACHINE DIMENSIONS 22. . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL DIAGRAMS 23. . . . . . . . . . . . . . . . . . . . .
LADDER DIAGRAM 23. . . . . . . . . . . . . . . . . . . . . . . . . .
WIRE DIAGRAM 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS LIST 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOLUTION TANK GROUP 26. . . . . . . . . . . . . . . . . . . . .
CONTROL CONSOLE GROUP 28. . . . . . . . . . . . . . . . .
ELECTRICAL PANEL GROUP 30. . . . . . . . . . . . . . . . .
RECOVERY TANK GROUP 32. . . . . . . . . . . . . . . . . . . .
SEAT GROUP 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHARGER AND BATTERY GROUP 36. . . . . . . . . . . .
STEERING GROUP 38. . . . . . . . . . . . . . . . . . . . . . . . . .
MAIN FRAME AND DRIVE GROUP 40. . . . . . . . . . . . .
CONTROL GROUP 42. . . . . . . . . . . . . . . . . . . . . . . . . . .
PAD DRIVER GROUP 44. . . . . . . . . . . . . . . . . . . . . . . . .
SOLUTION GROUP 46. . . . . . . . . . . . . . . . . . . . . . . . . .
SKIRT GROUP 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SQUEEGEE CONTROL GROUP 50. . . . . . . . . . . . . . .
SQUEEGEE GROUP 52. . . . . . . . . . . . . . . . . . . . . . . . .
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OPERATION
NoblesTuff Scrub3300 (09–9 3
SAFETY PRECAUTIONS
This machine is intended for industrial and commercial
use. It is suited to scrub hard floors in an indoor
environment and is not constructed for any other use.
Use only recommended pads, brushes and cleaning
detergents.
The following safety alert symbols are used throughout
this manual as indicated in their description.
WARNING: To warn of hazards or unsafe
practices which could result in severe personal
injury or death.
FOR SAFETY: To identify actions which must be
followed for safe operation of equipment.
The following information signals potentially dangerous
conditions to the operator or equipment:
FOR SAFETY:
1. Do not operate machine:
– Unless trained and authorized.
– Unless operation manual is read and
understood.
– In flammable or explosive areas unless
designed for use in those areas.
2. Before starting machine:
– Make sure all safety devices are in place
and operate properly.
– Check brakes and steering for proper
operation.
3. When using machine:
– Go slow on inclines and slippery surfaces.
– Use care when reversing machine.
– Do not carry riders on machine.
– Always follow safety and traffic rules.
– Report machine damage or faulty
operation immediately.
4. Before leaving or servicing machine:
– Stop on level surface.
– Set parking brake.
– Turn off machine and remove key.
5. When servicing machine:
– Avoid moving parts. Do not wear loose
jackets, shirts, or sleeves.
– Block machine tires before jacking
machine up.
– Jack machine up at designated locations
only. Block machine up with jack stands.
– Use hoist or jack of adequate capacity to
lift machine.
– Wear eye and ear protection when using
pressurized air or water.
– Disconnect battery connections before
working on machine.
– Wear hand and eye protection when
handling batteries or battery cables.
– Avoid contact with battery acid.
– Use manufacturer supplied or approved
replacement parts.
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away.
WARNING: Flammable materials can cause
an explosion or fire. Do not use flammable
materials in tank(s).
WARNING: Flammable materials or
reactive metals can cause explosion or fire.
Do not pick up.
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OPERATION
4sTuff Scrub3300 (06–00)
SAFETY LABELS
The safety labels appear on the machine in the
locations indicated. Replace labels if they become
damaged or illegible.
BATTERY CHARGING LABEL – Located on and
underneath battery compartment cover.
FOR SAFETY LABEL –
Located on control console
WARNING: Batteries emit
hydrogen gas. Explosion or
fire can result. Keep sparks
and open flame away.
FOR SAFETY:
Read manual
before operating
machine.
WARNING: Flammable materials can
cause an explosion or fire. Do not
use flammable materials in tank(s).
Flammable materials or reactive met-
als can cause explosion or fire. Do
not pick up.
FLAMMABLE MATERIALS/
SPILLS LABEL – Located
near solution tank fill port and on
recovery tank lid.
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OPERATION
NoblesTuff Scrub3300 (06–0 5
MACHINE COMPONENTS
13
12 11 10 98 7 6 5432
15
16 17
14
1
19
25
24
22
23
21
29
27
33
26
28
32
20
31
30
Steeringwheel removed for clarity.
1
18
29
1. Control Console
2. Key Switch
3. Main Power Indicator Light
4. Battery Meter
5. Hour Meter
6. Brush Pressure Meter
7. Brush/solution ON/OFF Indicator Light
8. Brush Switch
9. Horn Button
10. Squeegee/Vacuum Switch
11. Solution Control Knob
12. Solution Low Indicator Light
13. Power Kill Button
14. Directional Pedal
15. Brake Pedal
16. Parking Brake Pedal
17. Charger Plug
18. Circuit Breaker Panel
19. Steering Wheel
20. Seat Adjustment Lever
21. Recovery Tank
22. Recovery Tank Lid
23. Recovery Tank Drain Hose
24. Solution Tank
25. Solution Fill Port
26. Solution Tank Drain Hose
27. Battery Compartment
28. Squeegee Assembly
29. Wall Rollers
30. Scrub Head
31. Scrub Head Skirt
32. Drive Wheels
33. Rear Wheels
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OPERATION
6sTuff Scrub3300 (06–00)
CONTROL CONSOLE SYMBOLS
Main Power
Indicator Light
Brush Lower
Brush Down/
Solution On
Brush Motor (RH)
30A Circuit Breaker
Main Power 10A
Circuit Breaker
Horn Brush Motor (LH)
30A Circuit Breaker
Vacuum Motor 30A
Circuit Breaker
Drive Motor 35A
Circuit Breaker
Key Switch
Solution Low
Indicator Light
Squeegee Raise
Vacuum On/
Squeegee Lower
Brush Raise
Solution Flow
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OPERATION
NoblesTuff Scrub3300 (09–9 7
MACHINE INSTALLATION
UNCRATING MACHINE
1. Carefully check crate and machine for signs of
damage. Report damages at once to carrier.
2. Check Machine Contents list, contact distributor
for missing items.
Machine Contents:
– 5 Battery Cables (stored in battery
compartment)
– Squeegee Assembly (bolted on shipping pallet)
– 6 Batteries, 335A 6V (included with Pac
606994; not included with Pac 609237)
– Battery Charger (included with Pac 606994 &
609237)
– 2 Pad Drivers (included with Pac 606994 &
609237)
Scrub brushes and pads must be purchased
separately (See PARTS LIST section).
3. To uncrate your machine:
a. Remove shipping straps.
b. Install batteries if not pre–installed (See
INSTALLING BATTERIES)
c. Remove rear wheel block from pallet.
d. Position ramp (supplied) at rear of machine,
release parking brake and carefully back
machine off pallet (See MACHINE
OPERATION).
ATTENTION: Do not roll machine off pallet without
using ramp, machine damage may occur.
INSTALLING BATTERIES
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away.
FOR SAFETY: When servicing machine, wear
hand and eye protection when handling batteries
and battery cables. Avoid contact with battery
acid.
Recommended Battery Specifications:
Six 6 volt, deep cycle, 335 amp. hour batteries.
Maximum battery dimensions are 179 mm (7.00 in) W
x 296 mm (11.66 in) L x 424 mm (16.69 in) H.
1. Turn key to the off position.
2. Set parking brake pedal. Press brake pedal
completely forward then press parking brake pedal
with toe to set (Fig. 1).
Figure 1
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Hinge seat away from machine to access battery
compartment. Remove loose battery cables from
compartment (Fig. 2).
Figure 2
4. Carefully install batteries into battery compartment
and arrange battery posts as shown (Fig. 3).
Machine
Front
R
E
D
BLACK
12
3
4
5
7
6
Figure 3
ATTENTION: Do not drop batteries into
compartment, battery and machine housing
damage may result. This damage is not covered
by warranty.
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OPERATION
8sTuff Scrub3300 (06–00)
5. Before connecting battery cables, make sure
terminals and posts are clean. Use a post cleaner
and wire brush to clean posts and terminals.
6. Connect cables to battery posts in numerical order
as labeled, RED TO POSITIVE & BLACK TO
NEGATIVE (Fig. 3).
NOTE: Apply a light coating of non-metallic grease or
protective spray on the cable connections to prevent
battery corrosion.
7. Check battery meter charge level. Machine must
be in full operation for correct reading (See
MACHINE OPERATION). Charge batteries if
necessary.
MACHINE SETUP
ATTACHING SQUEEGEE ASSEMBLY
1. Turn key to the on position and raise squeegee
mount bracket by pressing vacuum/squeegee
switch (Fig. 4).
Figure 4
2. Turn key to the off position and set parking brake.
Press brake pedal completely forward then press
parking brake pedal with toe to set (Fig. 1).
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Loosen two thumb knobs on squeegee assembly.
From underneath machine, slide squeegee
assembly into slots of squeegee mount bracket.
Tighten thumb knobs securely (Fig. 5).
Figure 5
4. Attach vacuum hose to squeegee.
ADJUSTING SQUEEGEE ASSEMBLY
1. Lower squeegee to floor and drive machine
slightly forward to deflect squeegee blade.
2. Leave squeegee down and turn machine off and
set parking brake.
3. View squeegee blade deflection. Squeegee blade
should slightly deflect evenly across the entire
width of the squeegee as shown (Fig. 6).
Figure 6
If squeegee needs adjusting, perform the following
instructions to achieve proper squeegee operation.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
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OPERATION
NoblesTuff Scrub3300 (06–0 9
To Adjust Squeegee Blade Deflection
(Down Pressure):
Turn the squeegee adjustment cams counter–clock
wise to increase blade deflection or clockwise to
decrease (Fig. 7).
Figure 7
To Level Squeegee Blade Assembly:
Loosen the squeegee mount knobs and jam nuts on
the leveling screws. Turn leveling screws
counter–clockwise to increase blade deflection at the
ends of squeegee or clockwise to decrease. Retighten
knobs and jam nuts after leveling (Fig. 8).
Figure 8
INSTALLING BRUSHES/PAD DRIVERS
NOTE: Consult an authorized distributor for brush/pad
recommendations.
1. Turn key to the on position and press brush switch
to raise scrub head (Fig 9).
Figure 9
2. Turn key to the off position and set parking brake.
Press brake pedal completely forward then press
parking brake pedal with toe to set (Fig. 1).
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Unfasten two skirt latches and hinge open skirts to
access motor hubs (Fig. 10).
Figure 10
4. Attach pads to pad drivers before installing
drivers. Secure pads with centerlock rings
(Fig. 11).
Figure 11
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OPERATION
10 sTuff Scrub3300 (06–00)
5. To attach pad driver to machine, insert pad driver’s
mounting studs into drive plate slots. Hold drive
plate with thumb and give the driver a quick turn
toward the spring clip. Be certain that all three
mounting studs are engaged before operating
machine (Fig. 12).
NOTE: Make sure pad driver and motor hub surfaces
are clean before installing drivers. Keeping surfaces
clean allows for easy removal.
Figure 12
6. Close skirts and refasten latches.
FILLING SOLUTION TANK
1. Drive machine to filling station. Raise squeegee
and scrub head when traveling (See MACHINE
OPERATION).
2. Turn machine power off and set parking brake.
Press brake pedal completely forward then press
parking brake pedal with toe to set (Fig. 1)
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Lift fill-port cover and fill solution tank with clean
water, 60°C (140°F) maximum (Fig. 13). Solution
tank capacity is 151 L (40 gal).
Figure 13
WARNING: Flammable materials can cause
an explosion or fire. Do not use flammable
materials in tank(s).
4. Add a recommended cleaning detergent according
to mixing instructions on bottle.
ATTENTION: Use only recommended cleaning
detergents, DO NOT use substitutes. Consult an
authorized distributor for cleaning detergent
recommendations.
MACHINE OPERATION
PRE–OPERATION CHECKS
1. Sweep and dust-mop floor.
2. Check battery meter, machine must be in full
operation for correct reading .
3. Check that pads/brushes are installed.
4. Lower pads/brushes to floor and check that scrub
skirt touches floor all the way around.
5. Check that squeegee is installed and blades are in
good condition.
OPERATING MACHINE
FOR SAFETY: Do not operate machine unless
operation manual is read and understood.
1. Adjust operator seat to desired position. Move
lever to the left and slide seat backward or forward
to adjust (Fig. 14).
Figure 14
2. Turn key to the on position.
NOTE: To operate machine without using cleaning
functions move ahead to step 6.
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OPERATION
NoblesTuff Scrub3300 (06–0 11
3. Press brush switch to lower scrub head to floor.
The brush/solution indicator light will turn on when
scrub head reaches floor (Fig. 15).
Figure 15
NOTE: The brushes and solution flow are activated
when directional pedal is pressed.
4. Press vacuum/squeegee switch to lower
squeegee to floor. The vacuum motor will
automatically turn on once squeegee is lowered
(Fig. 16).
Figure 16
5. Turn solution control knob to maximum flow when
starting out. Then adjust to a desired flow rate
after scrubbing speed is determined (Fig. 17).
Figure 17
6. Press brake pedal to release parking brake pedal
(Fig. 18).
Figure 18
7. Press top of directional pedal to drive machine
forward. Travel speed is controlled by the amount
of pressure applied on pedal (Fig. 19).
NOTE: A safety switch is located under the seat. If
the operator is not seated the machine will not move in
either direction.
Figure 19
8. To operate machine in reverse, press bottom of
directional pedal with heel of foot (Fig. 20).
Figure 20
9. To stop machine, return directional pedal to the
neutral position and/or press brake.
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OPERATION
12 sTuff Scrub3300 (06–00)
EMERGENCY STOPPING
In the event of an emergency while operating, strike
the power kill button on the control console to halt the
machine. Turn button clockwise to reset (Fig. 21).
Figure 21
WHILE OPERATING MACHINE
1. Observe brush pressure meter. Meter should read
within the green zone, press brush switch to adjust
pressure (Fig. 22).
Figure 22
2. Scrub in straight paths overlapping each path by
50 mm (2 in).
WARNING: Flammable materials or
reactive metals can cause explosion or fire.
Do not pick up.
3. Avoid bumping into walls or scraping the sides of
machine.
4. Use caution when backing up and turning around
corners.
5. Use horn button located on control console to alert
people of on coming machine.
6. Drive machine slowly on inclines (See
TRANSPORTING MACHINE for ramp climbing
preparations).
FOR SAFETY: When using machine, go slow on
inclines and slippery surfaces.
7. Keep machine moving to prevent damage to finish
or floor.
8. Periodically observe recovery tank for excessive
foam. Pour a recommended foam control solution
into recovery tank if excessive foam appears
ATTENTION: Do not allow foam or water to enter
float shut-off screen, vacuum motor damage will
result; not covered by warranty. Foam will not
activate float shut-off screen.
9. Observe solution low indicator, located on control
console. When indicator light turns on, solution
level is low and is approaching time to refill
solution tank and drain recovery tank (See
DRAINING TANKS) (Fig. 23).
Figure 23
10. For heavily soiled areas, double scrubbing is
recommended. First scrub area with squeegee up,
let solution set for 15–20 minutes, then scrub area
a second time with squeegee down.
ATTENTION: Do not operate machine with pad
pressure meter in red zone, circuit breakers will
trip and floor damage may occur.
11. If machine is scrubbing poorly, stop scrubbing and
refer to the TROUBLE SHOOTING section in this
manual.
12. Stay clear of floor obstructions, such as electrical
plates or grates, brush/pad damage will occur.
13. If squeegee leaves streaks, raise and wipe blades
with a cloth. Pre-sweep area to prevent streaking.
If squeegee needs adjustment, refer to the
ADJUSTING SQUEEGEE section in this manual.
14. Observe battery meter (See BATTERY METER).
15. After scrubbing, perform the Daily Maintenance
procedures (See MACHINE MAINTENANCE).
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OPERATION
NoblesTuff Scrub3300 (06–0 13
BATTERY METER
The battery meter displays charge level. The indicator
light will move from right to left as the batteries
discharge. When the left side indicator light begins to
flash, discharge level is approaching time to recharge.
When two indicator lights flash alternately, stop
scrubbing and recharge batteries immediately
(Fig. 24).
Figure 24
MACHINE CIRCUIT BREAKERS
The machine is equipped with five resettable circuit
breakers to protect machine from damage. If a circuit
breaker should trip during operation, determine cause,
allow motor to cool and then manually reset breaker.
When replacing breakers, never substitute a higher
breaker than specified. Circuit breaker panel is located
below control console (Fig. 25).
– 10A Main Circuit Breaker
– 60A Drive Motor Circuit Breaker
– 30A Vacuum Motor Circuit Breaker
– 30A Brush Motor Circuit Breaker (2)
Figure 25
HOUR METER
The hour meter records number of scrubbing hours the
machine has performed. Use hour meter to determine
when to perform recommended maintenance procedures
and to record service history (Fig. 26).
Figure 26
DRAINING TANKS
When finished scrubbing, the recovery and solution
tanks should be drained and cleaned.
DRAINING RECOVERY TANK
Drain recovery tank:
– When solution tank is refilled.
– After each use.
– When squeegee starts trailing water.
– When float shut-off screen, located inside
recovery tank, is activated.
1. Drive machine to floor drain.
2. Turn key to the off position and set parking brake.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Remove drain hose from hose hook. Turn drain
hose knob counter-clockwise and pull plug out
while holding hose up. Then slowly lower hose to
floor drain (Fig. 27).
Figure 27
4. Remove recovery tank lid and flush tank out with
clean water.
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OPERATION
14 sTuff Scrub3300 (06–00)
5. Replace drain hose plug securely.
6. When finished scrubbing, perform the Daily
Maintenance procedures (See MACHINE
MAINTENANCE).
DRAINING SOLUTION TANK
Drain unused solution after each use.
1. Drive machine to floor drain.
2. Turn key to the off position and set parking brake.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Remove drain hose from hose clip located under
right side of machine (Fig. 28).
Figure 28
4. Turn drain hose cap counter-clockwise to remove
(Fig. 29).
Figure 29
5. Flush out solution tank with clean water.
6. Replace drain hose plug securely and return hose
in clip.
7. When finished scrubbing, perform the Daily
Maintenance procedures (See MACHINE
MAINTENANCE).
REMOVING BRUSHES/PAD DRIVERS
Brushes should be replaced when bristles are worn to
a length of 10 mm (0.38 in). Pads should be replaced
or cleaned daily.
NOTE: Always replace brushes and pads as a set.
Never replace just one.
1. Turn key to the on position and press brush switch
to raise scrub head.
2. Turn machine power off and set parking brake.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Unfasten two skirt latches and hinge open skirts to
access motor hubs (Fig. 30).
Figure 30
4. Grip brush/pad driver and give it a quick turn
counter-clockwise to release from spring clip
(Fig. 31).
Figure 31
5. Install new brushes/pads (See MACHINE
SETUP).
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OPERATION
NoblesTuff Scrub3300 (09–9 15
CHARGING BATTERIES
NOTE: Recharge batteries ONLY after a total of 30
minutes of use or more. This will prolong battery life.
The following charging instructions are intended
for chargers supplied with machine. Only use a
battery charger with the following specifications
to prevent battery damage.
BATTERY CHARGER SPECIFICATIONS:
OUTPUT VOLTAGE - 36 VOLTS
OUTPUT CURRENT - 36 AMPS
AUTOMATIC SHUTOFF CIRCUIT
FOR DEEP CYCLE BATTERY CHARGING
NOTE: For optimum machine operation, keep
batteries charged at all times. Never leave batteries
discharged for lengthy periods.
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away.
FOR SAFETY: When servicing machine, wear
hand and eye protection when handling batteries
and battery cables. Avoid contact with battery
acid.
1. Drive machine to a well–ventilated area for
charging.
2. Park machine on a level surface, turn key to the
off position and set parking brake.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
3. Hinge seat away from machine to access battery
compartment.
4. Check fluid level (A) in each battery cell before
charging. If battery plates (B) are exposed, add
just enough distilled water to cover plates by
approximately 3 mm (0.13 in). DO NOT
OVERFILL. Overfilled batteries will overflow
during charging due to fluid expansion. Replace
cell caps before charging (Fig. 32).
A
B
Figure 32
5. With charger disconnected from machine, plug
charger’s power cord into a grounded wall outlet
(Fig. 33).
Grounded
Grounding
Edge/hole
Grounded
3 Hole Outlet
Ground Pin
(120V) (230V)
Outlet
Figure 33
6. Connect battery charger to machine as shown
(Fig. 34).
Figure 34
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away.
NOTE: The machine becomes inoperable once
charger is connected.
7. Charger will automatically begin charging and shut
off when fully charged.
8. When disconnecting charger, always unplug
charger from wall outlet first.
9. After charging, check battery fluid level. Fluid level
should be within 3 mm (0.13 in) of full level
indicator. Add distilled water if needed. DO NOT
OVERFILL.
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OPERATION
16 sTuff Scrub3300 (09–99)
MACHINE MAINTENANCE
To keep machine in good working condition, simply
follow daily, weekly and monthly maintenance
procedures.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking brake,
turn off machine and remove key.
FOR SAFETY: When servicing machine,
disconnect battery connections before working on
machine.
ATTENTION: Contact an Authorized Service
Center for machine repairs. Machine repairs
performed by other than an authorized person will
void your warranty.
DAILY MAINTENANCE
(Every 4 Hours of Use)
1. Drain and flush out tanks with clean water (See
DRAINING TANKS).
2. Remove and rinse float shut-off screen located in
recovery tank (Fig. 35).
Figure 35
3. Check brushes for entangled debris.
4. Change pads or brushes, replace if worn or
damaged (See REMOVING BRUSHES/PAD
DRIVERS).
5. Check scrub head skirt(s) for wear and adjustment.
6. Raise squeegee and wipe it down with a dry cloth.
Store squeegee in the up position to prevent
squeegee damage.
7. Check machine for water leaks and loose nuts and
bolts.
8. Clean machine housing with an all purpose
cleaner and damp cloth.
ATTENTION: Do not power spray or hose off
machine. Electrical component damage due to
water is not covered by warranty.
9. Recharge batteries (See CHARGING
BATTERIES).
NOTE: Recharge batteries ONLY after a total of 30
minutes of use or more. This will prolong battery life.
WEEKLY MAINTENANCE
(Every 20 Hours of Use)
1. Remove solution bowl filter and clean screen, filter
is located behind scrub head under machine.
Make sure solution tank is empty before removing
filter (Fig. 36).
Figure 36
2. Check fluid level in battery cells (See BATTERY
MAINTENANCE).
3. Clean battery tops to prevent corrosion (See
BATTERY MAINTENANCE).
4. Check for loose or corroded battery cables.
MONTHLY MAINTENANCE
(Every 80 Hours of Use)
1. Flush solution system. Pour 11.3 L (3 gal) of hot
water into solution tank. Add an alkaline detergent
according to mixing instructions. Position machine
over a floor drain, turn travel speed knob to
slowest setting and set parking brake. Now fully
operate machine for 30 seconds. Turn key off and
leave machine overnight. Next day, disperse
remaining alkaline detergent and rinse solution
system.
2. Lubricate skirt caster with a water resistant
grease.
3. Lubricate all pivot points and rollers with silicone
spray then coat with a water resistant grease to
maintain smooth operation.
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OPERATION
NoblesTuff Scrub3300 (06–0 17
QUARTERLY MAINTENANCE
(Every 250 Hours of Use)
1. Check drive transaxle, vacuum and brush motors
for carbon brush wear, replace brushes when worn
to a length of 10 mm (0.38 in) or less.
Contact an Authorized Service Center for motor
maintenance.
2. Check steering chain tension (See STEERING
CHAIN MAINTENANCE).
BATTERY MAINTENANCE
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away.
FOR SAFETY: When servicing machine, wear
hand and eye protection when handling batteries
and battery cables. Avoid contact with battery
acid.
1. Always follow proper charging instructions (See
CHARGING BATTERIES).
2. After charging, check fluid level (A). Fluid level
should be within 3 mm (0.13 in) of full level
indicator. Add distilled water if needed. DO NOT
OVERFILL. Overfilled batteries will overflow
during charging due to fluid expansion (Fig. 37).
A
Figure 37
3. Keep battery tops and terminals clean and dry.
To clean batteries:
a. Mix a strong solution of baking soda and water
(Fig. 38).
Figure 38
b. Brush solution sparingly over battery tops,
terminal and cable connectors.
NOTE: Do not allow baking soda solution to enter
battery cells.
c. Use wire brush to clean terminal post and
cable connections.
d. After cleaning, apply a coating of clear battery
post protectant to terminals and cable
connections.
4. Check for loose or worn cables. Replace if worn.
STEERING CHAIN MAINTENANCE
The steering chain tension should be checked after
the first 50 hours of operation and every 250 hours
thereafter.
FOR SAFETY: When servicing machine,
disconnect battery connections before working on
machine.
1. To access steering chain, remove five floor panels,
13 mm wrench and Phillips head screwdriver
required (Fig. 39).
Figure 39
2. Measure amount of chain deflection at location
shown below. Proper chain deflection should be
approximately 25 mm (1.00 in) total (Fig. 40).
Idler Sprocket
Adjustment
Screw
Figure 40
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OPERATION
18 sTuff Scrub3300 (06–00)
3. To adjust chain tension, loosen jam nut on the idler
sprocket adjustment screw and turn screw
clockwise to increase tension. Retighten jam nut
after adjusting (Fig. 40).
4. Lubricate chain with a water resistant oil.
BRAKE ADJUSTMENT
If machine pulls in either direction while braking or if
machine does not stop immediately, brake adjustment
may by required.
FOR SAFETY: When servicing machine,
disconnect battery connections before working on
machine.
1. Hinge open skirts to access brakes (Fig. 41).
Figure 41
2. Locate hex link brake adjusters in front of each
drive wheel (Fig. 42).
Figure 42
3. To adjust brakes, loosen jam nut and turn hex link
adjuster as described below:
RIGHT SIDE – Turn hex link adjuster clockwise to
increase or counter-clockwise to reduce brake
pressure.
LEFT SIDE – Turn hex link adjuster counter–
clockwise to increase or clockwise to reduce brake
pressure.
NOTE: Brake adjustment should be made so that
brake pads are loose; not rubbing disc. A .045” shim
should be used for proper adjustment between pad
and disc. Adjusting the brakes too tightly will create an
extra load on the drive system and cause overloading
problems.
JACKING MACHINE
Empty tanks prior to jacking. Stop machine on a flat
level surface and block machine tires before jacking
up machine.
Use designated location for jacking up machine. Use a
piece of wood to distribute machine weight (Fig. 43).
Figure 43
FOR SAFETY: When servicing machine, block
machine tires before jacking machine up.
FOR SAFETY: When servicing machine, jack
machine up at designated locations only. Block
machine up with jack stands.
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OPERATION
NoblesTuff Scrub3300 (06–0 19
TRANSPORTING MACHINE
When transporting machine by use of trailer or truck,
be certain to follow tie–down procedures below:
FOR SAFETY: When using machine, go slow on
inclines and slippery surfaces.
1. Empty solution and recovery tanks.
2. Remove squeegee assembly, scrub head skirts
and brushes/pads.
3. Raise scrub head.
4. Loosen (4) knobs holding front caster in place and
remove caster (Fig, 44).
Figure 44
5. Load machine using a recommended loading
ramp.
6. Position front of machine up against front of trailer
of truck. Once machine is positioned, replace
brushes/pads and lower scrub head to floor.
7. Set parking brake and place a block behind each
drive wheel and steering wheel.
8. Place tie–down straps over top of bumper wheel
brackets.
STORING MACHINE
1. Charge batteries before storing. Never store
machine with discharged batteries.
2. Drain and rinse tanks thoroughly.
3. Store machine in a dry area with squeegee and
scrub head in the raised position.
4. Remove recovery tank lid to promote air
circulation.
ATTENTION: If storing machine in freezing
temperatures, be certain to drain machine of all
water. Damage due to freezing temperatures is not
covered by warranty.
ATTENTION: Do not expose machine to rain; store
indoors.
RECOMMENDED STOCK ITEMS
Refer to the Parts List section for recommended stock
items. Stock Items are clearly identified with a bullet
preceding the parts description. See example below:
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OPERATION
20 sTuff Scrub3300 (09–99)
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
Machine will not turn on Faulty key switch Contact Service Center
Seat safety switch not activated You must be seated
Batteries need charging See CHARGING BATTERIES
Faulty battery(s) Replace battery(s)
Loose battery cable Tighten loose cable
MAIN circuit breaker has tripped Determine cause and reset breaker
Power kill button activated Turn button clockwise to reset
Brush motors will not turn on Scrub head is not lowered Lower scrub head to floor
Directional pedal not pressed Press pedal
Faulty brush switch Contact Service Center
Brush circuit breaker has tripped Replace pad or adjust pad pressure
and reset brush circuit breaker button
Faulty brush motor or wiring Contact Service Center
Worn carbon brushes Contact Service Center
Faulty brush solenoid Contact Service Center
Faulty scrub head switch Contact Service Center
Vacuum motor will not turn on Faulty vacuum/squeegee switch Contact Service Center
Squeegee is raised off floor Lower squeegee
Main circuit breaker has tripped Determine cause and reset circuit
breaker button
Vacuum motor circuit breaker has
tripped Determine cause and reset circuit breaker button
Faulty vacuum motor or wiring Contact Service Center
Worn carbon brushes Contact Service Center
Faulty squeegee switch Contact Service Center
Little or no solution flow Scrub head is not lowered Lower scrub head to floor
Directional pedal not pressed Press directional pedal
Solution tank is empty Fill solution tank
Solution control knob not activated Turn solution flow knob
Loose set screw on solution control
knob Calibrate knob and tighten screw
Clogged solution line or solution tank
filter Remove hose and blow compressed air through it. Flush solution tank after
each use
Clogged solution valve or solenoid Remove valve or solenoid and clean.
Do not scratch inside of valve
Faulty solution solenoid Contact Service Center
Faulty scrub head switch Contact Service Center
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