6
MAINTENANCE
After every heating season, or sooner if used in a dirty environment,
carry out the following maintenance procedures on your heater.
GENERAL
Disconnect the heater from the electricity main power socket and
from the gas cylinder. Remove the screws retaining the cover and
remove the cover.
BURNER SERVICE
Remove the retaining clip (39) and remove the gas jet assembly from
its seat. Remove the gas jet (40). Check it and clean it by blowing in
the opposite direction to the gas flow.
Remove the combustion chamber assembly (be careful to remove all
screws/bolts and electrical connections holding it to the rest of the
heater) and remove the burner head assembly from it. Clean the
burner head assembly by using an airline. Where fitted check the
flame detecting probe, ignition electrode and thermocouple for
positioning, wear and cracks referring to the drawing attached.
Check and clean (or replace if necessary) the filter fitted in the nipple
(14) of the heater. Reassemble the above using reverse order and
remake any threaded joints in the gas line using Loctite 577.
GAS SUPPLY
Check the tightness on the gas supply hose and check pipe
connections in the gas line. PROPANE gas has a distinctive smell
and leaks can usually be detected immediately by this fact. If a leak
is suspected extinguish all naked flames and close the cylinder
valve. Never look for a leak using a naked flame but trace by
smell and confirm by brushing a soap solution over the
suspected leak. Remake any threaded joint in the gas line using
Loctite 577.
ELECTRICAL
Check that the motor fixing bolts are tight and make sure that the fan
fixing screw at the fan boss is tight.
Check the limit thermostat junction for continuity. Check that all
electrical connections are tight and in good condition.
GENERAL
Reassemble the heater making sure all screws and fittings are tight.
Reconnect and start the heater following the installation and
operating instructions. Test the heater for correct operation making
sure that all safety mechanisms (where fitted thermocouple, flame
detecting probe, air proving switch, limit thermostat) are operating
correctly.
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