SERVICING
33 MINOR MAINTENANCE
Fig. 33.1 Preparing the burner detachment
Minor maintenance involves the following activities:
1.
Isolate the electricity supply.
2.
Successively remove or detach (refer to frame 6):
-
the jacket of the unit (refer to frame 8)
-
the gas pipe from the valve
-
the gas/air pressure pipe
-
the plugs of the burner safety thermostat
-
the air supply hose of the fan.
3.
Loosen the two fasteners of the burner.
Remove and inspect the burner. If necessary, clean the
burner (refer to Fig. 33.2).
Note: the burner cover should be handled with care.
Only clean the burner with compressed air or a smooth
brush.
4.
Inspect the heat exchanger. If the heat exchanger is
polluted, major maintenance should be carried out.
Note: If the heat exchanger must be cleaned, the igniter
has to be removed. The igniter is very fragile and should
never be touched. The igniter is supplied with
120 V-AC. The mains supply MUST therefore always be
isolated before removing the burner (dangerous voltage
above 50 V-AC).
5.
After cleaning the burner, the silicone burner sealing
gasket can be re-used, provided it shows no damage.
If it is damaged it should be replaced. Reassemble the
burner in reverse order.
6.
Remove the fan by loosening it from the lower access
cover plate (refer to Fig. 33.3). Inspect and clean the fan,
if necessary. In order to remove the fan, disconnect the
connecting hose to the burner, remove the green block,
and pull the fan towards you.
7.
Remove and clean the siphon (refer to Fig. 33.4).
8.
After carrying out all the above activities, all parts have to
be fitted and the unit put back into operation. The following
control measurements and adjustments have to be made:
-
Measure the gas/air differential pressure:
refer to frame 31.
-
Measure the ionisation current: refer to frame 31.
Fig. 33.2 Detaching and cleaning the burner
Fig. 33.3 Removing the fan
Fig. 33.4 Removing the siphon
3
1
2
211214
212014 C
219055
219146
25
Maximiser SE
- Installation
