Desa Master WA 33 Operating Manual page 38

Maintenance
The heater requires little maintenance activities. The observance of manufacturer's recommendations will
ensure fault-free and safe operation of the device.
- clean the furnace pan and the elements of the combustion chamber (cylinder, ring and cover) everyday
- check the overflow conduit is jammed or not (the conduit in the lower part of the combustion chamber,
directly over the overflow tank), clean if necessary
- clean the furnace base in the combustion chamber (the element under the furnace pan) at least once a
week
- check if the air inlet openings are not covered in the bottom and the top part of the combustion chamber
- clean the conduit supplying oil onto the furnace pan, the maximal time of operation of the furnace pan
without cleaning amounts to about 7-14 hours (depending on the applied oil for combustion)
- during the heating season, clean the fuel tank and the oil pump filter
- if the furnace is inoperable for a longer period of time, clean the combustion chamber and the daily tank
accurately, then protect them from corrosion coating them with a thin layer of oil
IT IS RECOMMENDED TO PERFORM PERIODICAL CHECKS AT AN AUTHORISED
SERVICE
Overflow conduit
Fig.7. Combustion chamber
10
Furnace base