Guide book
Instantaneous water heater system WM 400 V
Page 14 from 17
8 Maintenance and care
The suction hoses, pumps, filter housings and filter are contaminated after the
first use. Repairs and maintenance have to be executed only under the observance
of all relevant safety measures.
8.1 Daily maintenance
- Control if the hoses have a continuous flow
- Control of the sewage water filter pressure gauge
- Visual inspection of the pre-filter for contamination
8.2 Sewage water pump
In case of frost danger, the stopped pump has to be emptied through the drain plug.
After a long standstill this is to check, before restarting, if the wheel has been blocked by
deposits caused by impurities, sediment and other causes. You may clean with
appropriate measures.
Caution!
All works on the unit are to be performed only if the electrical power has been
turned off.
Before commissioning, the pump must with the fluid through the vent port to be fully
populated
Note:
The pump must not be operated without liquid filling. Before operating, the pump
must be filled completely with the fluid through the vent port
Exhaust port
Drain plug
Notch on the
shaft end for
screwdriver
