LB493
Maior P 15/25/35 AB
B
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.
NOZZLE CLEANING AND REPLACEMENT
3,5 mm
6 mm
MAIOR P 15 AB
MAIOR P 25 AB
3,5 mm
3,5 mm
MAIOR
P
3
5
A
B
SUNTEC
SUNTEC
6
5
4
3
3
3
SUNTEC
SUNTEC
P
V
2
1
SUNTEC
SUNTEC
SUNTEC
SUNTEC
SUNTEC
SUNTEC
6
5
4
3
3
3
SUNTEC
SUNTEC
P
V
2
1
SUNTEC AS 67 B
MAIOR P 15 AB : The pump is a two pressure level type. During the test phase, it is adjusted to 10÷11 bar
for low flame, and 15÷16 bar for high flame.
PRIMING AND ADJUSTMENT OF OIL PUMP
MAIOR P 25 AB : The pressure of SUNTEC AS 47 K pump is adjusted to 12 bar during the test phase.
MAIOR P 35 : The pressure of SUNTEC AS 67 B pump is adjusted to 12 bar during the test phase.
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 12 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 bur-
1 - INLET
2 - RETURN
3 - BLEED AND PRESSURE GAUGE PORT
4 - VACUUM GAUGE PORT
5 - PRESSURE ADJUSTMENT
6 - TO NOZZLE
7 - PRESSURE ADJUSTMENT
8 - SPECIAL PRESSURE PORT
SUNTEC
8
6
5
4
3
2
1
7
SUNTEC AS 47 K
SUNTEC AT3 45A
Содержание MAIOR P 15 AB
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Страница 24: ...ABCD LB493 Maior P 15 25 35 AB...