pag.8
B
LB1122 Minor 1.1/1.1 R
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 by 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
ADJUSTMENT DATA
NOZZLE PUMP OUTPUT FIRING HEAD SETTING AIR DAMPER ADJUSTMENT
normal pre-heater normal pre-heater normal pre-heater
GPH SPRY BAR kg/h kg/h Pos. Pos. Pos. Pos.
0.40 80°S 12 1,7 - 0 - 1,5 -
0.50 80°S 12 2 1,82 1 0 3,5 3
0.60 80°S 12 2,4 1,92 2 1 5 4,5
0.65 80°S 12 2,7 2,4 3 2 7,5 7
0.75 80°S 12 3,1 2,7 4 4 9 8
MINOR 1.1 - 1.1R
NOZZLE : DANFOSS H÷S 80°÷60°; DELAVAN W 60°; STEINEN S 60°
PRIMING AND ADJUSTMENT OF OIL PUMP
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-
ner. 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 eventual obstruction could damage
the pump sealing device.
1 - INLET
2 - RETURN
3 - BLEED AND PRESSURE
GAUGE PORT
4 - VACUUM GAUGE PORT
5 - PRESSURE ADJUSTMENT
6 - TO NOZZLE
7 - CARTRIDGE FILTER