Maintenance; Scheduled Maintenance; Extraordinary Maintenance - Beretta NOVELLA 55-64-71 RAP Installation Manual

6 MAINTENANCE

To maintain maximum functionality and effi-
ciency, and to comply with applicable legisla-
tion, have the boiler serviced at regular inter-
vals.
The frequency at which servicing should be
performed depends on installation and oper-
ating conditions. The boiler should neverthe-
less be inspected by specialist personnel
from the manufacturer's Technical Assistance
Service at least once a year.
Always switch the boiler off if any work or
servicing has to be done on other equipment
installed near the flue gas vent pipes and/or
flues and associated accessories. On com-
pletion of work, have the efficiency of the flue
checked by qualified personnel.
b
Switch the boiler off at its control panel
and at the mains power switch, and turn
the gas supply off by closing the gas
shut-off cock before performing any
cleaning or maintenance on the boiler.
24
6.1

Scheduled maintenance

Scheduled maintenance normally consists of
the following operations:
- remove encrustations from the burner;
- remove encrustations from the heat
exchangers;
- check and clean the flue pipes;
- check the efficiency of the external casing;
- check the ignition, normal functioning and
shutdown of the boiler in DHW and CH
modes;
- check the tightness of the gas and water
pipe joints;
- check gas consumption at maximum and
minimum power;
- check the position of the ignition electrode
and flame detection sensor;
- check the gas failure safety system.
Do not use flammable substances (e.g. pet-
rol, alcohol etc.) to clean the boiler or any of
its parts.
Do not use paint thinners to clean the casing
or any painted or plastic parts of the boiler.
Use only soapy water to clean the boiler cas-
ing.
6.2

Extraordinary maintenance

Extraordinary maintenance involves actions
designed to restore the functioning of the
boiler to its design specifications and to
ensure conformity to legal requirements after
a failure or malfunction.
These actions can be:
- replacement of parts
- repairs
- reconditioning of parts.
These actions generally require special tools
and equipment.