540889_PUB_DATE_1_JUL_2011.DOC INSTALLATION, MAINTENANCE AND USER' MANUAL 33
Maintenance and adjustments
Checking and maintenance every six months
1. The filters in the water connection at the valves need to be cleaned. Turn off the tap. Unscrew the hoses
at the back of the appliance. Take out the filter at the center with pointed pliers, clean and re-insert.
When re-attaching the hoses, make sure that the seals are seated correctly. Check water inlets for leaks.
Tighten the connections or replace the seals of the inlet hose if necessary.
WARNING!
BEFORE REMOVING TOP OR BACK PANEL OF THE MACHINE, SWITCH POWER OFF AND WAIT
FOR AT LEAST 10 MINUTES. BEFORE STARTING INSPECTION OF FREQUENCY INVERTER,
CHECK FOR RESIDUAL VOLTAGE ACROSS MAIN CIRCUIT TERMINALS + AND -. THIS VOLTAGE
MUST BE BELOW 30VDC BEFORE YOU CAN ACCESS THE INVERTER FOR INSPECTION.
2. Remove dirt and dust, clean, and verify functionality from:
– the cooling fin of the inverter
– the motor cooling fins
– the internal ventilator of the inverter (if present)
– the external ventilator (if present)
– the external air relieves of the machine
!
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