420010355002 Maior P 45/60/80/120 PR
EN
Use only the suitable box wrench provided for this operation to remove the nozzle, taking care to not damage
the electrodes. Fit the new nozzle with the same care.
Note: Always check the position of electrodes after having replaced the nozzle (see illustration). A wrong posi-
tion could cause ignition troubles.
SUNTEC AJ 6 C-C
5
SUNTEC
SUNTEC
4
2
1 - INLET
2 - RETURN
3 - BLEED AND PRESSURE GAUGE PORT
4 - VACUUM GAUGE PORT
5 - PRESSURE ADJUSTMENT
6 - TO NOZZLE
VERIFY:
- That piping system is perfectly sealed;
- That the use of hoses is avoided whenever is possible (use copper pipes preferably);
- That depression is not greater than 0,45 bar, to avoid pump's cavitation;
- That check valve is suitably designed for the duty;
The pump pressure is set at a value of 22-25 bar during the testing of burners. Before starting the burner, bleed the air
in the pump through the gauge port. Fill the piping with light-oil to facilitate the pump priming.
Start the burner and check the pump feeding pressure. In case the pump priming does not take place during the first
prepurging, with a consequent, subsequent lock-out of the burner, rearm the burner's lock-out to restart, by pushing
the button on the control box. If, after a successful pump priming, the burner locks-out after the prepurging, due to a
fuel pressure drop in the pump, rearm the burner's lock-out to restart the burner. Do never allow the pump working
without oil for more than three minutes. Note: before starting the burner, check that the return pipe is open. An even-
tual obstruction could damage the pump sealing device.
NOZZLE CLEANING AND REPLACEMENT
PRIMING AND ADJUSTMENT OF OIL PUMP
3
6
1
6 mm
SUNTEC J 7 C 1000
1
SUNTEC
SUNTEC
SUNTEC
5
2
12
3,5 mm
4
6
3