OPERATION
7100 330690 (1--04)
56
MACHINE TROUBLESHOOTING
Problem
Cause
Remedy
Trailing water -- poor or no
water pickup
Worn squeegee blades
Rotate or replace squeegee blades
Squeegee out of adjustment
Adjust squeegee
Vacuum hose clogged
Flush vacuum hoses
Vacuum fan inlet filter dirty or wet
Clean and dry inlet filter
Debris caught on squeegee
Remove debris
Vacuum hose to squeegee or
recovery tank disconnected or
damaged
Reconnect or replace vacuum hose
Tank cover not completely closed
Check for obstructions
Torn seals on recovery tank
Replace seals
Vacuum fan will not turn on Recovery tank full
Drain recovery tank
Foam filling recovery tank
Empty recovery tank
Use less or change detergent
Use a defoamer
Vacuum fan circuit breaker tripped
Reset circuit breaker
Little or no solution flow to
the floor
Solution tank empty
Fill solution tank
Solution control rod broken or out of
adjustment
Replace and/or adjust rod
Solution flow turned off
Turn solution flow on
Solution supply lines plugged
Flush solution supply lines
Solution solenoid clogged or stuck
Clean or replace
ES mode (option): ES switch off
Turn ES switch on
Poor scrubbing
performance
Debris caught on scrub brushes
Remove debris
Improper detergent or brush used
Check with TENNANT
representative for advice
Worn scrub brush(es)
Replace scrub brush(es)
Scrub brush motor circuit breaker(s)
tripped
Reset circuit breaker(s)
Reduce scrub brush down pressure
Uneven brush pressure, level scrub
head
Broken brush drive belts on
cylindrical scrub head, replace belt
Check with TENNANT
representative for advice
Low battery charge
Charge batteries until the charger
automatically turns off