pag.24
EN
420010243004 MULTICALOR 170.1-200.1 PR/PR
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 con-
sequent, 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 eventual obstruction could damage the
pump sealing device.
PRIMING AND ADJUSTMENT OF OIL PUMP
1 - INLET
2 - RETURN
3 - BLEED AND PRESSURE GAUGE PORT
4 - VACUUM GAUGE PORT
5 - PRESSURE ADJUSTMENT
6 - TO NOZZLE
To calculate the length of
the pipework all the staight
parts, curves, up and down
pipes must be taken into
consideration. The static
suction height is the
distance between the stan-
ding valve and the axis of
the burner pump.
Pressure must not exceed
0,45 bar; if pressure is
greather pump operation
may become faulty, leading
to an increase in mechani-
cal noise and perhaps even
breakage.
H
H
Bitubo dalla sommità del serbatoio
Bitubo in aspirazione
H
(m)
Lunghezza tubazioni (m)
0
0,5
1
2
3
3,5
ø 14 mm
ø 16 mm
16
18
20
25
29
31
29
33
37
44
52
55
J 7
H
(m)
0
0,5
1
2
3
3,5
ø 14 mm
ø 16 mm
16
14
12
7
3
1
29
26
22
14
7
4
J 7
Lunghezza tubazioni (m)
SUCTION LINE LENGTHS MAX. FOR TWO - PIPE SYSTEMS
Two-pipe siphon feed system
Two-pipe lift system
Copper pipe
Copper pipe
6
5
3
2
SUNTEC
1
4
SUNTEC J7
SUNTEC TA....C
1
2
5
6
3
4
