MAINTENANCE
Tennant 1230 (7–96)
20
TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
Machine does not operate
Power cord not plugged in
Plug in to proper circuit
Building circuit breaker tripped
Reset breaker
Electrical malfunction
Contact service center
Brush does not run
Circuit breaker is tripped
Reset circuit breaker
Brush belt broken
Replace belt
Electrical malfunction
Call service center
Brush runs but does not scrub
carpet
Powerbrush head locked up
Release powerbrush head latch
Brush bristles worn
Replace brush
Vacuum motor does not run
Vacuum switch in OFF position
Turn to ON
Electrical malfunction
Call service center
Pump does not dispense
solution (triggers/valve
operated)
Tank low or empty
Refill tank(s)
Nozzle feed hose or accessory hose
not connected to quick disconnect
Connect properly
Pump inlet filter clogged
Clean filter
Nozzles and/or feed lines plugged
Clean
Pump or electrical malfunction
Contact service center
Solution flow does not stop
when triggers are released
Hand tool switch is set in the WAND
position
Set hand tool switch to TOP position
Machine leaves streaks on
carpet
Solution low or empty
Refill tank(s)
Nozzle(s) and solution tank screen
plugged
Clean
Operation too fast on dirty carpet
Slow down cleaning speed
Improper chemical or mixture
Use proper chemical and dilution
(in recycle mode) Solution
contaminated
Rinse and refill
Carpet too wet – machine
does not recover enough
water solution
Hose loose at vacuum head or tank
Install hose tightly
Tank cover(s) improperly installed
Reposition
Tank cover gaskets leak
Inspect/replace
Recovery tank not seated properly
against solution tank gaskets
Reposition tank properly
Operation too fast on dirty carpet
Slow down cleaning process
Could be normal – different carpets
release solution differently
Test on different carpet