Maintenance - Ferroli OPERA 70 Instructions For Use, Installation And Maintenance

OPERA

3.3 Maintenance

Periodical inspection
To ensure proper operation of the unit, it is necessary to have an annual inspection carried out by qualified personnel,
providing for the following:
• heat exchanger check and cleaning with suitable products if dirty or clogged
• check and possible cleaning of burner (do not use chemical products or wire brushes)
IMPORTANT: after cleaning the burner, be sure to position it by aligning the flange joint weld with the cen-
A
ter of the peephole hole (see fig. 67).
• check and cleaning of electrodes, which must be free of deposits and properly positioned
• seal and gasket check (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.
• expansion tank check and prefilling
• check of correct and stable system water pressure, ensuring conformity with the required working pressure.
B
The use of automatic filling systems for reinstatement of operating conditions
must provide for adequate treatment of the water (ref. *** 'System water charac-
teristics' on page 151 ***)
• check of heating system water chemical and physical parameters (ref. *** 'System water characteristics' on page
151 ***)
• water and gas system tightness check
• check of correct and stable gas supply pressure to 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.
• burner ignition and control and safety device check (gas valve, flowmeter, thermostats, etc.)
• circulating pump check, freeing when necessary
• fume analysis and check of combustion parameters
The casing, control panel and aesthetic parts of the boiler can be cleaned with a soft damp cloth, possibly
A
soaked in soapy water. All abrasive detergents and solvents should be avoided.
EN
fig. 67 - Alignment of the burner
cod. 3541R964 - Rev. 00 - 10/2021
179