Recovery System 35Service Manual – SC351
Troubleshooting
Trouble Possible Causes Remedy
The vacuum system motor (M2) does not
turn on.
The program selection knob/rotary switch (SW1) is
broken.
Replace.
The vacuum system motor (M2) is faulty. Check the amperage.
Replace.
The vacuum system motor fuse (F2) is open. Replace.
The vacuum system motor relay (K2) is broken. Replace.
The recovery water vacuuming is
insufcient or there is no vacuuming.
The vacuum grid with automatic shut-off oat is activated
because the recovery tank is full.
Drain the recovery tank.
The vacuum grid is dirty. Clean.
The transparent cover is not properly positioned. Adjust.
The tank cover gasket is not sealing. Clean/replace.
The vacuum system motor lter is dirty. Clean.
The vacuum gaskets are damaged or do not match
perfectly.
Repair or replace.
The squeegee or the vacuum hose is clogged or
damaged.
Clean/repair/replace.
Warning! This procedure must be performed by qualied personnel only.
Measure the vacuum suction at the end of the recovery hose with a gauge
Note: For the particular shape of the end vacuum hose (not circular), this operation is to be
performed with a suitable rettangular support mounted on the gauge.
1. Disconnect the vacuum hose from the squeegee.
2. Turn the knob on the number 3 working program.
3. With the gauge verify that the value is 27.7 in/H
2
O (710 mmH
2
O)
P100791
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