!
- 38 -
MAINTENANCE
7 - OIL FILTER
Annually clean the fuel filter or if it becomes da-
maged (e.g. when filling the tank).
- Close the fuel inlet tap,
- unscrew the bowl
8 - CHANGING A THERMOSTAT OR A THERMOMETER
- Boiler temperature control thermostat.
- Water overheating safety thermostat.
- Boiler temperature thermometer.
- Combustion product overheating safety thermostat
Safety: After each change, the capillary
must be properly secured on the pocket
opening so that the thermostat bulb
cannot accidentally fall out.
- Remove the boiler front panel (J), the top of the
casing (A) and the plastic cover (6), (Refer to
section 3 - page 14 - chapter V - INSTALLA-
TION)
8.5 - Bulbs in the boiler shell
- Extract the bulbs from the pockets (25 and 35) af-
ter removing the retaining clip (M, fig. 43),
- unscrew the 2 fixing screws (K) from the protec-
tion plate (9),
- remove the protection plate (9),
- unscrew the 4 fixing screws (L) from the control
panel (1),
- remove the control panel (1) to gain access to the
thermostat,
- remove the faulty appliance and replace it,
- position the bulbs in the pockets (25) and (35). To
ensure satisfactory heat contact, insert them as
far as possible inside the pocket.
• maintain it using the clip (M),
Do not crush the bulbs with the clip (M,
fig. 43) - deterioration of this latter.
15
34
35
1
26
33
25
F
C
X
-5
3
-U
K
K
9
L
L
1
28
Fig. 42
8.1 - Bulbs positioned in the boiler shell
8.2 - Bulb positioned on the heating output
tube
8.3 - Bulb positioned in the pocket of the
condensor
8.4 - Changing thermostats or thermometer
!
FCX-73-3
25
35
M
Fig. 43
