Tennant 1500 Product manual

Battery Automatic Carpet Extractor
1500
Model No.:
607647
607653 - Pac
Operator and Parts Manual
607648
Rev. 00 (11-99)
FAX: [phone]
CUSTOMER SERVICE: 1–800-982–7658
TENNANT COMPANY
Commercial Products
12875 RANSOM STREET
HOLLAND MI 49424 U.S.A.

OPERATION
2Tennant 1500 (05–99)
This manual is furnished with each new model. It
provides necessary operation and 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 illustrated
Parts Lists in this manual. Before ordering parts or
supplies, be sure to have your machine model number
and serial number handy. 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
Pleasefill out at time of installation for future reference.
Model No.-
Install. Date -
Serial No.-
1999 Tennant Company Printed in U.S.A.
Specifications and parts are subject to change without notice.
TABLE OF CONTENTS
SAFETY PRECAUTIONS 3. . . . . . . . . . . . . . . . . . . . . . . . .
MACHINE COMPONENTS 4. . . . . . . . . . . . . . . . . . . . . . . .
CONTROL PANEL SYMBOLS 4. . . . . . . . . . . . . . . . . . . . .
MACHINE INSTALLATION 5. . . . . . . . . . . . . . . . . . . . . . . .
UNCRATING MACHINE 5. . . . . . . . . . . . . . . . . . . . . . .
INSTALLING BATTERIES 5. . . . . . . . . . . . . . . . . . . . .
MACHINE SETUP 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FILLING SOLUTION TANK 6. . . . . . . . . . . . . . . . . . . .
ADJUSTING CONTROL GRIP HEIGHT 6. . . . . . . . . .
MACHINE OPERATION 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
WHILE OPERATING MACHINE 7. . . . . . . . . . . . . . . .
CIRCUIT BREAKERS 7. . . . . . . . . . . . . . . . . . . . . . . . .
OPTIONAL ACCESSORY TOOL
SETUP AND OPERATION 8. . . . . . . . . . . . . . . . . . . . . . . . .
DRAINING TANKS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRAINING RECOVERY TANK 9. . . . . . . . . . . . . . . . .
DRAINING SOLUTION TANK 9. . . . . . . . . . . . . . . . . .
BATTERY CHARGING 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DAILY MAINTENANCE 11. . . . . . . . . . . . . . . . . . . . . . . .
WEEKLY MAINTENANCE 11. . . . . . . . . . . . . . . . . . . . .
MONTHLY MAINTENANCE 12. . . . . . . . . . . . . . . . . . . .
EVERY 250 HOURS OF OPERATION 12. . . . . . . . . . .
BATTERY MAINTENANCE 13. . . . . . . . . . . . . . . . . . . .
ADJUSTING BRUSH HEIGHT 13. . . . . . . . . . . . . . . . . .
ADJUSTING PICK-UP HEAD PRESSURE 14. . . . . . .
STORING MACHINE 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECOMMENDED STOCK ITEMS 14. . . . . . . . . . . . . . . . . .
TROUBLE SHOOTING 15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS LIST 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOLUTION TANK GROUP 18. . . . . . . . . . . . . . . . . . . . .
RECOVERY TANK GROUP 20. . . . . . . . . . . . . . . . . . . .
LIFT GROUP 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BRUSH BASE GROUP 24. . . . . . . . . . . . . . . . . . . . . . . .
DRIVE GROUP 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PLUMBING GROUP 26. . . . . . . . . . . . . . . . . . . . . . . . . .
CONSOLE GROUP 28. . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL / BATTERY GROUP 30. . . . . . . . . . . . . .
ELECTRICAL DIAGRAMS 32. . . . . . . . . . . . . . . . . . . . . . . .
WIRE DIAGRAM 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LADDER DIAGRAM 33. . . . . . . . . . . . . . . . . . . . . . . . . .
OPTIONS 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
127 MM (5 IN) HAND TOOL 34. . . . . . . . . . . . . . . . . . . .
SOLUTION HAND VACUUM HOSES 34. . . . . . . . . . . .
FLOOR TOOL 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION
Tennant 1500 (11–99) 3
SAFETY PRECAUTIONS
This machine is intended for commercial use. It is
designed to clean carpets in an indoor environment
and is not constructed for any other use. Use only
recommended cleaning solutions.
All operators must read, understand, and practice the
following safety precautions:
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.
3. When using machine:
– Go slow on inclines and slippery surfaces.
– Use care when reversing machine.
– Always follow safety and traffic rules.
– Report machine damage or faulty
operation immediately.
– Follow mixing and handling instructions
on chemical containers.
4. Before leaving or servicing machine:
– Stop on level surface.
– Turn off machine.
5. When servicing machine:
– Avoid moving parts. Do not wear loose
jackets, shirts, or sleeves.
– Block machine tires before jacking
machine up.
– Use hoist or jack of adequate capacity to
lift machine.
– Disconnect battery connections before
working on machine.
– Wear protective gloves 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. Keep battery compartment open
when charging.
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.

OPERATION
4Tennant 1500 (05–99)
MACHINE COMPONENTS
1
8
7
36
5
4
18
16
22
15
25
24
26
27
31
30
28
29
32
23
13
11
10
19
20
12
21
9
2
17
14
1. Control Console
2. Control Roll Grips
3. Main ON/OFF Switch
4. Pump ON/OFF Switch
5. Vacuum ON/OFF Switch
6. Brush/Pickup Head Actuator Switch
7. Battery Meter
8. Reverse Switch
9. Speed Control Knob
10. Main/Pump/Brush Circuit Breaker
11. Vacuum/Drive Circuit Breaker
12. Intake Vacuum Hose
13. Brush/Pickup Head Actuator
14. Adjustable Control Console Levers
15. Recovery Tank Drain Hose
16. Solution Tank Drain Hose
17. 19L (5 Gal) Increment Markers
18. Rear Fill Port
19. Inline Solution Filter Strainer
20. Accessory Solution hose Coupler
21. Accessory Vacuum Hose Connecter
22. Recovery Tank
23. Recovery Tank Lid
24. Solution Tank
25. Solution Tank Fill Door
26. Battery Compartment
27. Charger Plug
28. Drive Wheels
29. Rear Casters
30. Wall Rollers
31. Pick-up Head
32. Brush Base
CONTROL PANEL SYMBOLS
MainPower
Vacuum
Less Brush
Pressure
More Brush
Pressure
Fast Speed
Slow Speed
Reverse
Main Power
Circuit Breaker
Read Manual
Before Operating
Battery Charge
Meter
Pump
Vacuum/drive Motor
Circuit Breaker

OPERATION
Tennant 1500 (05–99) 5
MACHINE INSTALLATION
UNCRATING MACHINE
Carefully check carton for signs of damage. Report
any damage at once to carrier.
Batteries and battery charger are packaged separately.
ATTENTION: Battery installation must be
accomplished after removing machine from
shipping crate.
To uncrate your machine, remove shipping straps and
carefully lift or make a ramp using crate boards to
remove machine from pallet.
ATTENTION: Do not roll machine off pallet,
damage may occur.
INSTALLING BATTERIES
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away. Keep battery compartment open
when charging.
FOR SAFETY: When servicing machine, wear
protective gloves when handling batteries or
battery cables. Avoid contact with battery acid.
Battery Specifications:
Two 12 volt, deep cycle batteries. Consult with an
Authorized Distributor for specific batteries. Maximum
battery dimensions are 178 mm (7 in) W x 381 mm
(15 in) L x 356 mm (14 in) H.
1. Turn all switches to the OFF position.
2. Carefully hinge open recovery tank to access
battery compartment. Remove loose battery cable
from compartment (Figure 1).
FIG. 1
3. Carefully install batteries into battery tray at
bottom of compartment and arrange battery posts
as shown (Figure 2).
(+) (–)
(+)
(–)
FIG. 2
ATTENTION: Do not drop batteries into
compartment, battery and machine housing
damage may result. This damage in not covered
by warranty.
4. Connect battery cables to battery posts as shown
(RED TO POSITIVE & BLACK TO NEGATIVE)
(Figure 2).
5. After batteries are properly installed, turn on the
main switch and check battery meter charge level
to ensure batteries are fully charged. Charge if
necessary, See Battery Charging (Figure 3).
FIG. 3

OPERATION
6Tennant 1500 (11–99)
MACHINE SETUP
FILLING SOLUTION TANK
1. Transport machine to filling station. Raise
brush/pick-up head when transporting.
2. Turn off main switch.
3. Open solution fill door at front of machine and fill
solution tank with 64 L (17 gal) of clean water,
60°C (140°F) maximum temperature. Or you can
use the rear fill port to fill solution tank. Twist off
plug and insert hose to fill. The clear tube below
the fill port has 19 L (5 gal) increment markers to
indicate amount of water in tank (Figure 4).
FIG. 4
WARNING: Flammable materials can cause
an explosion or fire. Do not use flammable
materials in tank(s).
NOTE: If filling with a bucket, be certain that bucket is
clean. This will prevent possible solution line clogs.
4. Add cleaning chemical. See proper dilution ratio
instructions on bottle.
FOR SAFETY: When using machine, follow
mixing and handling instructions on chemical
containers.
ATTENTION: Use only recommended cleaning
chemicals, DO NOT use substitutes. Consult an
authorized distributor to assist you with the
recommended cleaning chemicals.
ADJUSTING CONTROL GRIP HEIGHT
The machine has three control grip height settings.
1. Locate two spring loaded levers below console.
2. Squeeze levers together and lift or lower control
grips to a comfortable operating height
(Figure 5).
FIG. 5
MACHINE OPERATION
PRE–OPERATION CHECKS
Vacuum floor and remove any debris.
Check battery meter charge level to ensure
batteries are fully charged (See Battery Charging) .
Check that spray bar is installed.
Check that inline strainer filter is installed.
Inspect spray tips for proper spray pattern
(See Weekly Maintenance) .
FOR SAFETY: Do not operate machine, unless
operator manual is read and understood.
1. Turn on main switch.
2. Lower brush/pick-up head to floor by depressing
brush height switch (Figure 6).
FIG. 6
3. Turn on vacuum and pump switches.
NOTE: The brush and pump will start once control
grips are rotated.

OPERATION
Tennant 1500 (05–99) 7
4. Before you begin cleaning, turn speed control
knob to slowest speed (Figure 7).
FIG. 7
5. To begin cleaning, rotate control grips completely
forward and gradually turn speed control knob to
desired cleaning speed (Figure 7).
For optimum cleaning results, operate at a cleaning
speed of 15 m (50 ft) per minute for deep cleaning
and 30 m (100 ft) per minute for interim cleaning.
WARNING: Flammable materials or reactive
metals can cause explosion or fire. Do not pick
up.
6. To stop machine, release control grips.
7. To operate machine in reverse, simply pull reverse
switch backwards one speed (Figure 8).
FIG. 8
8. After cleaning carpets, allow sufficient time for
carpet to dry. Use a carpet blower to reduce drying
time.
WHILE OPERATING MACHINE
1. Periodically check for foam buildup in recovery
tank (look through clear lid) . If excessive foam
buildup begins to develop, pour a recommended
foam control solution into recovery tank.
ATTENTION: Do not allow foam or water to enter
float shut-off screen, vacuum motor damage will
result. Foam will not activate float shut-off
screen. Vacuum damage due to foam or water is
not covered by warranty.
2. Always operate at a slower speed when cleaning
around walls or obstacles.
3. Always reduce speed to maintain control when
turning machine.
4. Overlap each pass by 50 mm (2 in).
5. Before reaching end of cleaning path, turn off
pump switch and continue to drive machine
forward to extract solution.
6. Periodically check battery meter discharge level.
When needle drops to the red zone, recharge
batteries.
ATTENTION: Do not continue to run machine
when battery meter needle is in the red zone,
battery damage will result.
7. While cleaning, view clear hose gallon marker for
remaining cleaning solution. Each mark on hose
indicates 19 L (5 gal).
8. When solution tank runs dry, turn off pump and
vacuum switches, raise brush, and transport
machine to draining area (See Draining Tanks) .
9. If the cleaning path leaves streaks, spray tip
cleaning is required (See Weekly Maintenance) .
CIRCUIT BREAKERS
The machine is equipped with two resetable circuit
breakers, Main (15A) and Vacuum/Drive (60A), to
protect machine from damage. If a circuit breaker
should trip, determine cause and reset breaker by
depressing circuit breaker button.
The main and vacuum/drive circuit breakers are
designed to stop current flow by manually pulling out
the circuit breaker button. Pull out the main circuit
button to protect you from electric shock when
servicing machine, or when machine is left
unattended. Pull out vacuum/drive circuit breaker
button to keep machine stationary while performing
specific maintenance procedures. Circuit breakers are
located below control console (Figure 9).

OPERATION
8Tennant 1500 (05–99)
FIG. 9
OPTIONAL ACCESSORY TOOL SETUP
AND OPERATION
Machine is equipped with accessory tool connections.
Accessory tool enables you to reach areas that the
machine is unable, such as alcoves, stairs and corners
(See Options).
1. Vacuum area before cleaning.
2. Fill solution tank and add cleaning chemical (See
Filling Solution Tank) .
WARNING: Flammable materials can cause
an explosion or fire. Do not use flammable
materials in tank(s).
3. Disconnect lower vacuum hose at rear of machine
and replace with accessory vacuum hose
(Figure 10).
FIG. 10
4. Connect solution hose to accessory tool coupler,
located at lower rear of machine (Figure 11).
FIG. 11
5. Connect accessory tool to solution hose and
vacuum hose (Figure 12).
FIG. 12
6. Turn on main, pump and vacuum switches.
7. Take accessory tool and begin cleaning at top of
area and work backwards toward machine.
WARNING: Flammable materials or reactive
metals can cause explosion or fire. Do not pick
up.
8. Place accessory tool head on area to be cleaned;
squeeze trigger, apply downward pressure on
accessory tool head, and slowly pull tool
backwards. Release trigger 152 mm (6 in) from
end of stroke (Figure 13).

OPERATION
Tennant 1500 (05–99) 9
FIG. 13
9. When returning for next stroke, push accessory
tool forward over same path with trigger released.
Continue this pull and push method with a 50 to
102 mm (2 to 4 in) overlap of each stroke.
NOTE: For heavily soiled areas, repeat stroke or
change angle of stroke.
10. Empty recovery tank when solution tank runs dry
(See Draining Tanks) .
ATTENTION: Do not allow foam or water to enter
vacuum standpipe, vacuum motor damage will
result. Ball float shutoff will not keep foam out of
standpipe. Vacuum damage due to foam or water
is not covered by warranty.
DRAINING TANKS
ATTENTION: Raise brush/pickup head when
transporting machine to floor drain.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface and turn off
machine.
DRAINING RECOVERY TANK
Always empty recovery tank when refilling solution
tank. You may refill solution tank while emptying
recovery tank. To drain recovery tank, perform the
following steps:
ATTENTION: If recovery tank is not emptied
between fill–ups, foam or water will enter vacuum
standpipe and damage vacuum motor. Float
shut–off screen will not keep foam out of
standpipe. Vacuum damage due to foam or water
is not covered by warranty.
1. Remove drain hose from holder, position hose
over floor drain and twist off drain hose plug. To
completely drain recovery tank, hinge open tank
and flip up tank support stand to rest tank on
(Figure 14).
NOTE: Use different buckets for filling and emptying
tank. This will prevent possible solution line clogs.
FIG. 14
2. Rinse out recovery tank after each use. This will
prevent a foul odor and residue buildup in tank.
Unscrew clear lid on recovery tank and rinse out
the tank with hose. Be careful not to spray water
into float shut-off screen.
3. Replace drain hose plug tightly when tank is
empty.
DRAINING SOLUTION TANK
To drain leftover cleaning solution from solution tank,
follow steps below:
1. Pull clear hose off hose barb at rear of machine
and drain solution into floor drain or bucket
(Figure 15).
FIG. 15

OPERATION
10 Tennant 1500 (11–99)
2. Rinse out solution tank and solution system with
clean water after each use. This will prevent
clogging due to chemical buildup. Use clear hose
to drain solution tank when rinsing.
3. When reconnecting clear hose to hose barb, be
certain hose is completely pushed onto hose barb.
BATTERY CHARGING
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.
CHARGER SPECIFICATIONS:
OUTPUT VOLTAGE - 24 VOLTS
OUTPUT CURRENT - 25 AMPS MAXIMUM
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.
ATTENTION: Do not continue to run machine
when battery meter needle is in the red zone,
battery damage will result.
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away. Keep battery compartment open
when charging.
FOR SAFETY: When servicing machine, wear
protective gloves when handling batteries or
battery cables. Avoid contact with battery acid.
1. Transport machine to a well ventilated area for
charging.
2. Turn main switch off.
3. Hinge open recovery tank to access battery
compartment. Make sure recovery tank is empty
before opening (Figure 16).
FIG. 16
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 can overflow
during charging due to fluid expansion. Replace
cell caps before charging (Figure 17).
A
B
FIG. 17
5. With charger disconnected from machine, plug
charger’s power cord into a grounded wall outlet
(Figure 18).

OPERATION
Tennant 1500 (05–99) 11
Grounded
Grounding
Edge/hole
Grounded
3 Hole Outlet
Ground Pin
(120V) (230V)
Outlet
FIG. 18
6. Connect battery charger to machine as shown.
Flip up tank support stand to promote ventilation
(Figure 19).
FIG. 19
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.
MAINTENANCE
To keep machine in good working condition, simply
follow daily, weekly and monthly maintenance
procedures.
FOR SAFETY: When leaving or servicing machine,
stop on level surface and turn off machine.
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 Operation)
1. Recharge batteries if discharged below 50%.
2. Remove float shut-off screen and rinse off. Screen
is located in recovery tank (Figure 20).
FIG. 20
3. Drain and rinse tanks thoroughly. After draining
tanks, hinge recovery tank open and remove any
clogging debris in inlet hole if necessary.
4. Clean machine housing with a nonabrasive,
nonsolvent cleaner.
5. Inspect brush for entangled debris.
WEEKLY MAINTENANCE
(Every 20 Hours of Operation)
1. Check electrolyte level in battery cells (See
Battery Maintenance).
2. Clean battery tops to prevent corrosion (See
Battery Maintenance).
3. Check for loose or corroded battery cables.
4. Remove inline strainer filter and rinse out. Make
sure solution tank is empty before removing filter.
Filter is located under machine at rear (Figure 21).

OPERATION
12 Tennant 1500 (11–99)
FIG. 21
5. Inspect spray tips for proper spray pattern:
a. Pull out vacuum/drive circuit breaker button,
located at rear of control console.
b. Lower brush/pick–up head and remove
detachable spray bar from brush base. Do not
disconnect bar from quick coupler. Raise
brush after removing spray bar (Figure 22).
c. Turn on main and pump switches.
d. Rotate control grips and observe spray
pattern. Pattern should fan out evenly across
the width of the spray bar.
e. Clean or replace defective twist-out spray tips
if necessary (See Weekly Maintenance).
FIG. 22
MONTHLY MAINTENANCE
(Every 80 Hours of Operation)
1. Flush out tanks and solution lines:
a. Pull out the vacuum/drive circuit breaker
button, located at rear of control console.
b. Pour 750 ml (24 oz) of an acetic acid solution
with 11.3 L (3 gal) of hot water into solution
tank; do not exceed 60C (140F).
FOR SAFETY: When using machine, follow
mixing and handling instructions on chemical
containers.
c. Turn on the main and pump switches.
d. Over a floor drain, rotate control grips and
hold for one to two minutes.
e. Shut off power and let machine set overnight
to allow acetic acid solution to breakdown
alkaline buildup.
f. Next day, operate pump to disperse remaining
acetic acid solution.
g. Then rinse out solution tank and solution lines
with clean water.
h. Reset drive circuit breaker button when
completed.
2. Remove detachable spray bar from brush base.
Remove twist-out spray tips from spray bar and
soak in 118 ml (4 oz) acetic acid solution for up to
6 hours. After soaking tips, use a small brush to
remove excess alkaline and rinse thoroughly. DO
NOT use pointed objects to unplug spray tips
(Figure 23).
FIG. 23
3. Lubricate caster grease fittings with a water
resistant grease.
4. Lubricate all linkage pivot points with silicone
spray, then coat with a water resistant grease to
maintain a smooth operation.
5. Check machine for water leaks and loose nuts and
bolts.
EVERY 250 HOURS OF OPERATION
Check drive and vacuum motors for carbon brush
wear, replace brushes if worn to a length of 10 mm
(0.38 in) or less.

OPERATION
Tennant 1500 (05–99) 13
BATTERY MAINTENANCE
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep sparks and
open flame away. Keep battery compartment open
when charging.
FOR SAFETY: When servicing machine, wear
protective gloves when handling batteries and
battery cables. Avoid contact with battery acid.
1. Always follow proper charging instructions (See
Battery Charging).
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 can overflow
during charging due to fluid expansion
(Figure 24).
A
FIG. 24
3. Keep battery tops and terminals clean and dry.
To clean batteries:
a. Mix a strong solution of baking soda and water
(Figure 25).
FIG. 25
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.
ADJUSTING BRUSH HEIGHT
Brush height is factory preset and should not require
any adjustment. If brush height adjustment is
necessary, follow steps below.
Proper brush height is correct when bristles slightly
bend creating a flicking action on the carpet.
To adjust brush height:
1. Stop machine on level surface and pull out main
circuit breaker button to shut-off power. Button is
located at rear of control console.
2. Carefully hinge open recovery tank to access
brush height adjustment screws.
3. Loosen the two brush height lock screws as
shown. Do not remove screws (Figure 26).
FIG. 26
4. Then turn the two adjustment screws an equal
amount of turns as shown (clockwise to raise). It is
very important that screws are turned an equal
amount, otherwise the brush will tilt causing
premature brush wear and ineffective cleaning
(Figure 27).

OPERATION
14 Tennant 1500 (05–99)
FIG. 27
5. Retighten lock screws once proper brush height is
achieved.
ADJUSTING PICK-UP HEAD PRESSURE
Pick-up head pressure is factory preset and should not
require any adjustment. If pick-up head adjustment is
necessary, follow steps below.
Proper pick-up head pressure is correct when pick-up
head glides smoothly with minimal drag restriction.
To adjust pick-up head pressure:
1. Stop machine on level surface and pull out main
circuit breaker button to shut-off power. Button is
located at rear of control console.
2. Carefully hinge open recovery tank to access
pick-up head adjustment nut.
3. Turn adjustment nut clockwise for more pick-up
head pressure or counter–clockwise for less. Do
not remove nut (Figure 28).
FIG. 28
STORING MACHINE
1. Before storing machine, be certain to rinse tanks
and drain machine of all water.
2. Store machine in a dry area.
3. Remove recovery lid to promote air circulation.
4. Raise the brush/pickup head off the floor.
5. If storing machine in freezing temperatures, be
certain to circulate an undiluted anti-freeze
solution throughout the machine.
ATTENTION: Do not allow machine to freeze
without anti freeze. Damage due to freezing
temperatures is not covered by warranty.
ATTENTION: Do not expose machine to rain and
store indoors.
RECOMMENDED STOCK ITEMS
Refer to Standard Parts section for recommended
stock items. Stock Items are clearly identified with a
Bullet preceding the parts description. See example
below:

OPERATION
Tennant 1500 (05–99) 15
TROUBLE SHOOTING
PROBLEM CAUSE SOLUTION
No power. Faulty main switch. Contact Service Center.
Batteries need charging. See Charging Batteries.
Main circuit breaker is pulled out. Depress main circuit breaker.
Faulty battery(s). Replace battery(s).
Loose battery cable. Tighten loose cable.
MAIN circuit breaker has tripped. Determine cause and reset circuit breaker
button.
Brush motor does not
operate
Pump switch is not on. Turn on pump switch.
operate. Control grips are not rotated. Rotate control grips.
Brush circuit breaker has tripped or is
pulled out. Remove obstruction from brush and reset brush circuit breaker button.
Faulty brush motor or wiring. Contact Service Center.
Carbon brushes worn. Contact Service Center.
Loose or broken belt. Replace, or contact Service Center.
Vacuum motor does not
operate
Faulty vacuum switch. Contact Service Center.
operate. Vacuum motor thermal overload activated. Remove obstruction and wait 20 minutes
for motor to cool.
Faulty vacuum motor or wiring. Contact Service Center.
Carbon brushes worn. Contact Service Center.
Drive motor does not
operate
Drive motor circuit breaker has tripped. Determine cause and reset breaker.
operate. Faulty speed control board or connection. Contact Service Center.
Faulty solenoid. Contact Service Center.
Faulty drive motor. Contact Service Center.
Faulty wiring. Contact Service Center.
Worn carbon brushes. Contact Service Center.
Drive motor operates, but
not correctly. Faulty potentiometer or speed control board. Contact Service Center.
y
Loose wire connection. Contact Service Center.
Uneven or no solution spray. Twist–out spray tips are plugged. Remove and clean.
Control grips are not rotated. Rotate control grips.
Solution line or solution tank filter is
clogged. Remove hose and blow compressed air through it. Flush solution tank after each
use.
Inline strainer filter is plugged. Drain solution tank, remove filter and
clean. Located under machine at rear.
Faulty pump switch. Contact Service Center.
Faulty pump or solenoid. Contact Service Center.
Short run time. Batteries not fully charged. Charge batteries.
Bad cell in one or more batteries. Replace battery.
Batteries need maintenance. See Battery Maintenance.
Faulty charger. Replace battery charger.

OPERATION
16 Tennant 1500 (05–99)
TROUBLE SHOOTING –Continued
PROBLEM CAUSE SOLUTION
Poor vacuum recovery. Recovery tank is full. Empty recovery tank.
Float shut-off screen inside recovery tank
is clogged. Remove screen and clean.
Pick-up head is clogged with debris. Remove debris, use coat hanger.
Pick-up head is not sealed to carpet. Adjust pick-up head.
Faulty actuator. Contact Service Center.
Vacuum hose connections are loose or
hose has a hole. Push hose cuffs firmly on connections. Replace hose if damaged.
Vacuum hose is clogged with debris. Remove clogged debris.
Recovery tank inlet hole is obstructed. Empty recovery tank and tilt tank sideways
to access inlet hole, remove obstruction.
Tank gasket is defective. Replace gasket.
Drain hose plug is loose. Tighten drain plug.
Recovery tank lid is loose. Tighten lid.
Vacuum motor is loose. Contact Service Center.
Battery charge level is low. Charge batteries. Do not run machine
when battery meter is in the red zone.

OPERATION
Tennant 1500 (05–99) 17
SPECIFICATIONS
MODEL 1500
LENGTH 1270 mm (50 in)
WIDTH 559 mm (22 in)
HEIGHT 990 mm (39 in)
WEIGHT 170 kg (375 lbs) –w/ batteries 272 kg (600 lbs)
SOL./REC TANK CAPACITY 64 L (17 gal)
SPEED CONTROL Variable Fwd. / Fixed Reverse.
CLEANING SPEED (MAX) 418.05m2(4,500 sq. ft) per hour
CLEANING PATH WIDTH 559 mm (22 in)
PAD PRESSURE Variable 36–68Kg (80–150 lbs)
SOLUTION PUMP 6.9 bar (100 psi) max., 24V
DRIVE SYSTEM Transaxle, .2 h.p., 24V
BRUSH MOTOR .2 h.p., 2000 rpm, 24V, 8A, 192W
VACUUM MOTOR 1 h.p., 2–stage 7.2”, 24V, 30A, 720W
WATERLIFT 2057 mm (81 in)
BATTERIES 2–12V, 215AH
RUN TIME PER CHARGE Up to 4.5 hours
DECIBEL RATING AT OPERATOR’S EAR,
INDOORS ON CARPET 75dB(A)

PARTS LIST
Tennant 1500 (05–99)
18
SOLUTION TANK GROUP
30
2
3
28
13
14
15
16
18
17 19 20
24
26
27
21
22 18
19 23
29
31
33
34
31
38
37
36
35
42
43
4
6
5
1
32
40
41
39
40 39
25
7
9
11
10
8
910 12 12 10
97

PARTS LIST
Tennant 1500 (05–99) 19
SOLUTION TANK GROUP
REF PART # DESCRIPTION QTY.
1 607515 COVER, TANK, TEAL 1
2230626 HINGE, COVER 1
3140706 RIVET, POP 7
4 602529 SCREEN, FILL 1
5140826 SCREW, #6X3/4 2
6140032 WASHER, FLAT 2
7230661 PLATE, LOCK CONTROL HOUSING 2
8602641 WELDMENT, DRAIN HOSE 1
9140027 WASHER, FLAT 4
10 140015 WASHER, LOCK 4
11 140275 SCREW, M8X1.25X16MM 4
12 200 031 488 SCREW, M08X20MM 4
13 100151 GASKET, TUBE ADAPTER 1
14 230664 TUBE, ADAPTER 1
15 140424 SPRING, ADAPTER TUBE 1
16 602878 WASHER 1
17 602847 BRACKET, VAC TUBE 1
18 140027 WASHER, FLAT 2
19 140015 WASHER, LOCK 2
20 200 031 486 SCREW, M08X16MM 2
21 230925 SUPPORT, RECOVERY TANK 1
22 140116 BUSHING 1
REF PART # DESCRIPTION QTY.
23 140275 SCREW, M8X1.25X16MM 1
24 600476 STRAP, PLUG 1
25 621324 PLUG, EXPANSION 1
26 140011 WASHER, FLAT 1
27 140350 SCREW, #10X1/2 1
28 603233 DECAL, BATTERY DIAGRAM 1
29 607552 TANK, SOLUTION, TEAL 1
30 608155 DECAL, 1500 2
31 150529 HOSE BARB 2
32 130040 WIRE TIE 4
33 607309 HOSE, 3/4” X 24” 1
34 630369 CLAMP, HOSE 1
35 630002 CASTER 4” 2
36 140036 WASHER, FLAT 8
37 140333 WASHER, LOCK 8
38 140276 SCREW, M10X1.5X16MM 8
39 150419 ELBOW, 1/4M X 3/8H 90°2
40 140310 CLAMP 2
41 607310 HOSE, 3/8” X 17.5” 1
42 600730 DECAL, RECESS 1
43 120192 DECAL, “TENNANT” 1
RECOMMENDED STOCK ITEMS

PARTS LIST
Tennant 1500 (05–99)
20
RECOVERY TANK GROUP
28
15
26
20
23
24
15
22
1
2
30
12
3
4
5
611
9
10
13
1514
16
15
14
13
1415
13
8
7
34
35
33
32
36
17
18
19
25
27
31
21a
21