35
20141167
GB
Maintenance
Gas filter
Change the gas filter when it is dirty.
Combustion
If the combustion values measured before starting maintenance
do not comply with applicable legislation or do not indicate
efficient combustion, consult the Tab. S on page 33 or contact
our Technical Support Service to implement the necessary
adjustments.
Leave the burner working without interruption for about 10 min,
checking the right settings in the 1st and 2nd stage of all the
components stated in this manual:
–
Percentage of CO
2
(%);
–
CO content (ppm)
–
NOx content (ppm)
–
Ionisation current (µA)
–
Smoke temperature at the flue
7.3
Opening the burner
If maintenance of the combustion head is required, refer to the
instructions given in "Operating position" on page 14.
For accessing to the interior of the burner, loosen the screws that
secure the cover and proceed with the maintenance operation.
Check the operation
–
Burner start-up with sequence of the functions
–
Ignition device
–
Air pressure switch
–
Flame monitoring
–
Seal test of components to the passage of fuel
DANGER
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel shut-off valve.
Wait for the components in contact with heat
sources to cool down completely.
DANGER
Operating safety hazards
Repairs to the following components may only be
carried out by the respective manufacturers or by
personnel instructed by them:
–
fan motor
–
air damper
–
electromagnetic valves
–
burner programmer
After carrying out maintenance, cleaning or
checking operations, reassemble the cover and
all the safety and protection devices of the burner.
