20
ECONCEPT 100
3.3 Maintenance
The following operations are strictly reserved for Qualified Personnel, such as those of our Sales Organiza-
tion or the local Customer Technical Assistance Service.
Seasonal inspection of the generator and flue
Have the following checks carried out at least once a year:
• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function correctly.
• The fume ducts must be free of obstructions and leaks.
• The condensate evacuation system must be efficient without any leaks or obstructions.
• The gas and water systems must be tight.
• The burner and exchanger must be clean. Follow the instructions in the next paragraph.
• The electrodes must be free of scale and correctly positioned.
• The water pressure in the system when cold must be approx. 1 – 1.5 bar; otherwise bring it to that
value.
• The gas flow and pressure must correspond to that given in the respective tables.
• The circulating pumps must not be blocked.
Cleaning the generator and burner
The body and burner must not be cleaned with chemical products or wire brushes.
Particular attention must also be paid after performing all the operations, in checking and carrying out all
the switch-on and operation phases of the thermostats, gas valves and circulating pumps.
After these checks, make sure there are no gas leaks.
Shutting off the exchangers from the system
To isolate the single exchanger from the system and allow maintenance operations, firstly shut off the return
valve “
1
” and then the three-way delivery valve “
2
”. In this way the three-way valve “puts the exchanger
in communication with the atmosphere”, causing it to discharge into the special manifold “
4
”.
4
1
2
