37
Pegasus LN 2S
Cod. 3540G310 - 03/2007 (Rev. 02)
EN
3.3 Maintenance
The following operations must only be carried out by Qualified Personnel.
Seasonal inspection of the boiler and flue
It is advisable to carry out the following checks at least once a year:
• The control and safety devices (gas valve, thermostats, etc.) must function correctly.
• The fume ducts must be free of obstructions and leaks.
• The gas and water systems must be airtight.
• The burner and boiler shell must be clean. Follow the instructions in the next paragraph.
• The electrodes must be free of scale and properly positioned (see Fig. 16).
• The water pressure in the cold water system must be about 1 bar; otherwise, bring it to that value.
• The expansion tank, if present, must be filled.
• The gas flow and pressure must correspond to that given in the respective tables.
• The circulating pumps must not be blocked.
Safety devices
The PEGASUS LN 2S boiler is equipped with devices that guarantee safety in the event of operating trouble.
Temperature limiter (safety thermostat) with manual reset
This device prevents the water temperature in the system from exceeding boiling point. The maximum intervention
temperature is 110°C.
Automatic reset of the temperature limiter can only occur with cooling of the boiler (the temperature must drop
by at least 10° C) and identification and consequent elimination of the problem that caused the shutdown. To reset
the temperature limiter you will need to unscrew the cover 3 (Fig. 1) and press the button below.
Opening the front panel
To open the front panel of the boiler, see the sequence in Fig.
10.
Before carrying out any operation inside the boiler,
disconnect the electrical power supply and close the
gas cock upstream.
1
2
fig. 10
