Maintenance; Routine Maintenance; Extraordinary Maintenance; Checking The Combustion Parameters - Beretta POWER X 50 DEP Installation Manual

5

MAINTENANCE

It is mandatory to perform maintenance and cleaning of the
device at least once a year.
This operation, carried out by Technical Assistance Cen-
tre or by professionally qualified personnel, is necessary to
monitor and ensure that the flue pipes inside and outside
of the device, the fan, the safety valves, the condensate re-
moval devices, the water drainage tubes and all the meas-
urement and control devices are in perfect working order.
b
Before carrying out any maintenance or cleaning, dis-
connect the power from the device by turning off the
bipolar main switch and closing the main gas valve.
In addition, for all maintenance (to be carried out at
least once a year, as noted above) always replace all
the flue and gas seals, in particular the burner seals.
Perform the following operations before beginning any
maintenance:
- Switch the electricity supply OFF at the mains power
switch and turn the control panel function selector to
(OFF)
- Close all external fuel shut-off cocks.
74
The external panels and control panel must be cleaned us-
ing cloths moistened with soap and water.
To remove stubborn marks, use a cloth damped in a 50%
mix of water and denatured alcohol or a suitable cleaning
product.
Carefully dry after cleaning.
a
Do not use abrasive products, petrol or triethylene.

5 1 Routine maintenance

This normally means the following tasks:
- removing any oxidation from the burner
- removing any scale from the heat exchangers;
- removing any residues from the condensate drainage
pipe;
- checking and cleaning the drainage pipes;
- checking the external appearance of the boiler
- checking the ignition, switch-off and operation of the
appliance, in both domestic water mode and heating
mode
- checking the seal on the gas and water couplings
and pipes
- checking the gas consumption at maximum and min-
imum output;
- checking the position of the ignition-flame detection
glowplug
- checking the gas failure safety device.

5 2 Extraordinary maintenance

These tasks restore appliance operation in accordance
with the design and regulations - e.g. following the repair of
an accidental fault.
This normally means:
- replacement
- repair
- overhaul of components.
These tasks require special means, equipment and tools.
During the initial installation phase, or in the event of ex-
traordinary maintenance, it is recommended to discharge
the air from the heating circuit and the boiler, see section
Eliminating the air from the heating circuit and boiler
5 3 Checking the combustion
parameters
To carry out the combustion analysis, proceed as follows:
- insert the analyser's probes into the flue gas (A) and
Fig. 49
air (B) inlets on the boiler, after having removed caps
(C) and (D).
A
Fig. 50
b
The flue gas analysis probe should be inserted until
its reaches the stop.
- Tighten the analyser's sealing screw in the flue gas
analysis inlet hole
- Calibrate the boiler as described in the section "Ad-
justments".
- Remove the probes from the analyser, and reapply
the previously removed caps.
b
Even during the combustion analysis phase, the
function that switches the boiler off when the water
temperature reaches the maximum limit (about 90°C)
remains enabled.
C
B
D
Fig. 51