20148049
38
GB
Maintenance
Fan
Check to make sure that no dust has accumulated inside the fan
or on its impellers, as this condition will cause a reduction in the
air flow rate and provoke polluting combustion.
Servomotor
Release cam 4)(Fig. 38 on page 32) from the servomotor, by
pressing and shifting button 3)(Fig. 39 on page 33) to the right.
Manually rotate it backwards and forwards to make sure it moves
smoothly. Now engage the cam again by shifting the button
2)(Fig. 39 on page 33) to the left.
Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics
intact, especially: the flue gas temperature and combustion
chamber pressure.
Flame inspection window
Clean the glass of the flame inspection window (Fig. 45).
7.2.4
Flame presence check
Check the level of the flame detection signal with the “Check
Mode” function from the flame control: LEDs from 2 to 6 indicate
the flame signal level, respectively.
See “LED indicator and special function” on page 41.
Check Mode
With burner flame on:
hold the reset button on the flame control pressed for at
least 3 sec.;
the button colour will change from green to yellow;
each operating status signalling LED will be compared to
20% of the maximum brightness;
press the reset button again (<0.5sec) to reset the standard
operation of the signalling LEDs.
7.2.5
Safety components
The safety components must be replaced at the end of their life
cycle indicated in Tab. N.
The specified life cycles do not refer to the warranty terms
indicated in the delivery or payment conditions.
Tab. N
Fig. 45
D484
Safety component
Life cycle
Flame control
10 years or 250.000
operation cycles
Flame sensor
10 years or 250.000
operation cycles
Gas valves (solenoid)
10 years or 250.000
operation cycles
Pressure switches
10 years or 250.000
operation cycles
Pressure adjuster
15 years
Servomotor (electronic
cam) (if present)
10 years or 250.000
operation cycles
Oil valve (solenoid)(if
present)
10 years or 250.000
operation cycles
Oil regulator (if present)
10 years or 250.000
operation cycles
Oil pipes/ couplings
(metallic) (if present)
10 years
Flexible hoses (if present)
5 years or 30.000 pressurised
cycles
Fan impeller
10 years or 500.000 start-ups