•
Check and cleaning of electrodes, which must be free of deposits and properly positioned.
•
Check of gaskets and seals (burner, sealed chamber, etc.).
•
Check and cleaning of sludge remover filters and system filters.
•
Check, cleaning and filling of condensate drain traps.
•
Check of wiring, contacts, electrical actuators.
•
Check and cleaning of generator air inlets and boiler room air intakes.
•
Check and cleaning of fume evacuation duct-manifold-flue system.
•
Check of expansion tank and precharge.
•
Check of correct and stable system water pressure, ensuring conformity with the required working pressure.
The use of automatic filling systems for reinstatement of operating conditions
B
must provide for adequate treatment of the water (ref. "System water characte-
ristics" on page 228 )
•
check of heating system water chemical and physical parameters (ref. "System water characteristics" on page 228 )
•
water and gas system tightness check
•
check of correct and stable gas supply pressure to the plant (20 mbar for operation with natural gas); any fluctuations
or pressure drops below the declared value can create malfunctioning and stops with need for manual resetting.
•
check of correct burner ignition and operation of control and safety devices (gas valve, flow meter, thermostats, etc.)
•
check of circulating pump operation, freeing them when necessary
•
fume analysis and check of combustion parameters
The boiler casing, control panel and aesthetic parts can be cleaned with a damp, soft cloth, if necessary
A
soaked in soapy water. Do not use abrasive detergents and solvents.
Opening the front panel
Some internal parts of the boiler can reach high temperatures able to cause
B
severe burns.Before carrying out any operation, allow these parts to cool or,
alternatively, wear appropriate gloves.
To open the boiler casing:
1. Undo the screws A (see fig. 78).
2. Pull the panel B.
Proceed in reverse order to refit the front panel. Make sure it is correctly hooked to the upper fastenings and is correctly
positioned at the sides.
260
fig. 78- Front panel opening
cod. 3541V232 - Rev 00 - 08/2021
FORCE W
EN