ENGLISH
SERVICE MANUAL
48
909 6424 000(3)2007-12 BR 601 / BR 651 / BR 751 / BR 751 C
RECOVERY WATER SYSTEM
TROUBLESHOOTING
The vacuum system motor does not turn on
The function electronic board supplies current to the vacuum system motor directly; if the motor does not work, possible causes are
the following (see also the Electrical System chapter, function electronic board diagnosis):
The vacuum system motor carbon brushes are worn (replace).
The vacuum system motor is faulty (check the electrical input).
The function electronic board is damaged (replace).
Dirty water vacuuming is insuffi cient or there is no vacuuming
Possible causes:
The vacuum grid with automatic shut-off fl oat is activated because the recovery water tank is full (empty the recovery water
tank).
The grid is dirty (clean).
The tank cover is not correctly positioned (adjust).
The tank cover gasket is not effi cient (replace).
The squeegee or the vacuum hose is clogged or damaged (clean or repair/replace).
The vacuum gaskets are damaged or do not match perfectly (repair or replace).
The squeegee leaves lining on the fl oor or does not collect water
Possible causes:
There is debris under the blade (remove).
The squeegee blade edges are torn or worn (replace).
The squeegee is not balanced (adjust it with the relevant handwheel).
The recovery water drain hose plug is open (close).
The squeegee does not lift/lower
Possible causes (see also the Electrical System chapter, function electronic board diagnosis):
The actuator is faulty (repair/replace).
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