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6.3
Pump
Key (Fig. 22)
1
Suction line G 1/4"
2
Return line
G 1/4"
3
Pressure gauge connectionG 1/8"
4
Vacuometer connectionG 1/8"
5
Pressure adjustment
6.3.1
Technical data
BURNER
PUMP MODEL
Min. delivery rate at 20 bar
pressure
Delivery pressure range
Max. suction depression
Viscosity range
Max. light oil temperature
Max. suction and return
pressure
Pressure calibration in the
factory
Filter mesh width
Hydraulic system
RL 38/M
RL 28/M
RL 50/M
Suntec
Suntec
AL 75C
AL 95C
kg/h
74
bar
10 - 20
10 - 20
bar
0.45
2
mm
/s (cSt)
2 - 12
°C
60
bar
2
bar
20
mm
0.15
6.3.2
Priming pump
D1239
Before starting the burner, make sure that the
tank return line is not clogged.
Obstructions in the line could cause the
ATTENTION
sealing organ located on the pump shaft to
break.
(The pump leaves the factory with the by-pass
closed).
–
In order for self-priming to take place, one of the screws 3)
(Fig. 22) of the pump must be loosened in order to bleed off
the air contained in the suction line.
Fig. 22
–
Start the burner by closing the control devices and with the
switch 1)(Fig. 23) in "MAN" position. As soon as burner
starts, check the fan rotation direction through the flame
inspection window 19).
–
The pump can be considered to be primed when the light oil
starts coming out of the screw 3).
–
Stop the burner: set switch 1)(Fig. 23) to "OFF" and tighten
the screw 3).
99
The time required for this operation depends upon the diameter
0.45
and length of the suction tubing.
2 - 12
If the pump fails to prime at the first starting of the burner and the
60
burner locks out, wait approx. 15 seconds, reset the burner, and
then repeat the starting operation as often as required.
2
And so on. After 5 or 6 starting operations allow 2 or 3 minutes
for the transformer to cool.
20
The a.m. operation is possible because the pump
is already full of fuel when it leaves the factory. If
0.15
the pump has been drained, fill it with fuel through
Tab. J
the opening on the vacuum meter prior to starting;
ATTENTION
otherwise, the pump will seize.
Whenever the length of the suction piping
exceeds 20-30 meters, the supply line must be
filled using a separate pump.
21
GB
1
2
D791
Fig. 23
20167399
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