66
T7AMR 9018134 (12-2021)
OPERATION
MACHINE TROUBLESHOOTING
Problem
Cause
Remedy
Trailing water-
poor or no
water pickup
Vacuum fan turned off
Turn vacuum fan on
Squeegee in raised double scrub position
Lower squeegee from raised double
scrub position
Worn squeegee blades
Rotate or replace squeegee blades
Squeegee out of adjustment
Adjust squeegee
Vacuum hose clogged
Flush vacuum hoses
Vacuum fan filter dirty
Clean vacuum fan filter
Vacuum fan cover seals worn
Replace seals
Debris caught on squeegee
Remove debris
Vacuum hose to squeegee or recovery tank
disconnected or damaged
Reconnect or replace vacuum hose
Recovery tank cover not completely closed Check for obstructions and close cover
Vacuum fan
will not turn on
Vacuum fan switch turned off
Turn vacuum switch on
Recovery tank full
Drain recovery tank
Foam filling recovery tank
Empty recovery tank
Use less detergent
Recovery tank sensor dirty or stuck
Clean or replace sensor
Little or no
solution flow
to the floor
(Conventional
Scrubbing
Mode)
Solution tank empty
Fill solution tank
Solution flow turned off
Turn solution flow on
Solution supply lines plugged
Flush solution supply lines
Clogged solution tank filter
Drain solution tank, remove solution tank
filter, clean and reinstall
Poor
scrubbing
performance
1-Step button
not on
Turn
1-Step button
on
Improper detergent or brushes used
Contact Tennant service representative
Recovery tank full
Empty recovery tank
Solution tank empty
Fill solution tank
Debris caught on scrub brushes or pads
Remove debris
Worn scrub brush
Replace scrub brush
Brush pressure set too light
Increase brush pressure
Low battery charge
Charge batteries until the charger
automatically turns off