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10 MAINTENANCE
IMPORTANT
Carry out thorough cleaning and periodic maintenance to ensure a correct and safe operation of the sys-
tem. A perfectly clean tube bundle increases the thermal exchange between fumes and water contributing
to energy saving and reducing air pollution.
10.1 PREPARATION FOR INSPECTION AND MAINTENANCE
Before carrying out any kind of maintenance, in order to avoid risks, the operator must be
equipped with all the personal protection provided by the standards in force.
Before performing any cleaning and maintenance operation, it is first necessary to disconnect the
device from both the fuel and the mains supply.
Maintenance must be entrusted only to
technically qualified personnel
and can be either mechanical or electri-
cal.
The preparation and status of the generator may be different, depending on the operations to be performed:
With the boiler running,
to check the integrity of the generator when hot (fume trace seal, water side gasket
seal, flue draught, operation of adjustment and safety accessories),
With switch-off and complete cooling
of the generator, when having to open the front door with inspection in-
side the furnace and fume chamber.
With cooling, complete empting and safe shut-off of the generator
towards the system of use, in the case
of water side internal visit.
Particular precautions must be taken to avoid the risk of electric shock since the system on the
generator has accessories powered at 230V and/or at 400V.
Before intervening on the generator, ensure that the connection to the electrical system has been
made according to current standards, also ensuring proper earthing connection to the system.
10.2 CLEANING
As economic operation depends on the cleanliness of the heat exchanger surfaces and on burner adjustment, it is
well to:
-
Have the burner settings checked by professionally qualified personnel;
-
Analyse the system water and allow for adequate water treatment to avoid the formation of calcareous
incrustations that initially reduce boiler efficiency, and then lead to damage;
IMPORTANT
It is recommended to check periodically possible scale deposits through the side inspection plugs (see
par. Technical Data): if necessary, carry out chemical washing.
-
Check the integrity and cleanliness of the turbulators, if any
-
Check that the cladding and the flue gas sealing gaskets are in good order and if not, replace;
-
Periodically check the efficiency of the regulation and safety instruments on the system.
