Unical XC-K3 1000, Инструкция по установке и обслуживанию

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37
Maintenance instructions
ENGLISH
Boiler body maintenance
danger!
Before performing any maintenance, make
sure the boiler and its components have
cooled off.
Disconnect the boiler from the electric mains and
shut the gas supply to the appliance.
attention!
Before cleaning the boiler body, protect the
panel board against any water sprays.
Once a year, at the end of the heating season, the boiler must
receive a general cleaning.
Before performing any maintenance, make sure that all the
precautions referred to in the previous point have been taken.
To proceed with maintenance you must:
- disconnect power by acting on the main switch;
- remove the burner, which could be overhauled at the same
time;
- open the furnace door to access the combustion
chamber;
- make sure the internal parts are intact.
checking gasket status
Check the status of the seal gaskets which must
not show signs of deterioration; if so, they must
be replaced, using only original spare parts.
Maintenance of burner
Burner maintenance must be carried out by personnel authorised
by its manufacturer (or else the warranty shall be terminated).
checking ignition electrode
Burner maintenance must be carried out by personnel authorised
by its manufacturer (or else the warranty shall be terminated).
Components to check during yearly inspection
COMPONENT: VERIFY: CONTROL/INTERVENTION MEASURE:
Safety thermostat does the thermostat place the boiler in
safety when overheating?
Bring the boiler to operating temperature with
the pumps stopped.
System expansion vessel does the vessel contain the right amount
of air?
Check the nitrogen pressure.
Pressurise the boiler (open the pump
bleeder). Open the heating circuit closing
valves.
door gaskets does smoke seep through the door
gaskets?
Further tighten the door nuts.
replace the sealing gasket.
door gaskets does smoke seep through the smoke
chamber gaskets?
Further tighten the smoke chamber nuts.
replace the sealing gaskets.