26 - FORM NO. 56041479 / ConvertaMAX
™
34 / I-MAX
™
34HD
TROUBLESHOOTING
Problem
Possible Cause
Remedy
Poor water pick-up
Worn or torn squeegee blades
Reverse or replace
Squeegee out of adjustment
Adjust so blades touch floor evenly
across entire width
Recovery tank full
Empty recovery tank
Recovery tank drain hose leak
Secure drain hose cap or replace
Recovery tank cover gasket leak
Replace gasket / Seat cover properly
Debris caught in squeegee
Clean squeegee tool
Vacuum hose clogged
Remove debris
Using too much solution
Adjust solution control valves
Poor scrubbing performance
Worn brush or pad
Rotate or replace brushes
Wrong brush or pad type
Consult Nilfisk-Advance
Wrong cleaning chemical
Consult Nilfisk-Advance
Moving machine too fast
Slow down
Not using enough solution
Adjust solution control valves
Inadequate solution flow
Solution tank empty
Fill solution tank
or no solution
Solution lines, valves, filter clogged
Flush lines, and clean solution filter
Solution control valves not open
Adjust solution control valves
Solution solenoid valve
Clean or replace valve
Machine does not run
Main system controller
Check error fault codes
(see service manual)
Tripped control circuit circuit breaker (10A)
Check for electrical short circuit & reset
No FWD/REV wheel drive
Drive system speed contoller
Check error fault codes
(see service manual)
Tripped wheel drive circuit breaker (45A)
Check for drive motor overload
Vacuum shuts off and display shows
Plugged squeegee hose
Clear debris
“FULL” when recovery tank is not full
Vacuuming large amounts of water
Slow down or disable auto shut-off feature
at a high travel speed
(see service manual)
