OPERATION
Tennant 750 (06--05)
20
TROUBLE SHOOTING
PROBLEM
CAUSE
SOLUTION
Machine does not operate.
Tripped GFCI device.
(120V Models Only)
Reset GFCI device.
(120V Models Only)
Faulty GFCI device.
(120V Models Only)
Contact Service Center.
Faulty power cord.
Contact Service Center.
Building circuit breaker tripped.
Reset breaker.
Spray gun does not operate.
Air in pump system.
Operate spray gun at low pressure to
prime pump.
Empty solution tank.
Fill solution tank.
Pump switch not activated.
Activate pump switch.
Kink in solution hose
Unwind hose.
Plugged spray gun nozzle.
Clean Nozzle.
Plugged solution tank filter
Unplug filter.
Loose solution hose connection.
Properly connect solution hose to
coupler.
Kinked or plugged internal pump hose. Unkink or unplug pump hose.
Faulty pump.
Contact Service Center.
Faulty pump switch or wiring.
Contact Service Center.
Faulty spray gun.
Replace spray gun.
No vacuum.
Vacuum/blower switch is pressed
towards blower symbol.
Press switch towards vacuum symbol.
Faulty vacuum/blower switch or wiring. Contact Service Center.
Defective vacuum motor.
Contact Service Center.
Worn carbon brushes.
Contact Service Center.
Poor vacuum.
Clogged float shut--off screen.
Remove recovery tank lid and clean
lint off screen.
Full recovery tank.
Empty recovery tank.
Loose recovery tank lid.
Tighten recovery tank lid.
Loose vacuum hose connections.
Secure connections.
Defective vacuum hose.
Replace hose.
Loose vacuum hose cuffs.
Secure cuffs to hose.
Defective squeegee tool.
Replace squeegee blades.
Formula Cleaner not injecting.
Spray gun set to high pressure.
Set gun to low pressure.
Plugged metering tip.
Remove metering tip and clean.
Plugged injection tube.
Unplug injection tube.
Empty Formula container.
Replace with new container.
Formula ON/OFF lever turned off.
Turn Formula ON/OFF lever to ON.
Injector tube not submerged in
Formula container.
Submerge injector tube to bottom of
Formula container.
Plugged formula Injector.
Remove and clean injector. When
replacing injector, point arrow towards
spray gun.
No air--flow from blower hose.
Loose blower hose connection.
Secure hose connection.
Defective blower motor.
Contact Service Center.
Worn carbon brushes in blower motor. Contact Service Center.