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5.12.1 Priming pump
Before starting the burner, make sure that the tank
return line is not clogged.
Obstructions in the line could cause the sealing
WARNING
organ located on the pump shaft to break.
(The pump leaves the factory with the by-pass
closed).
➤ Also check to make sure that the valves located on the suc-
tion line are open and that there is sufficient fuel in the tank.
➤ In order for self-priming to take place, the pressure gauge
attachment plug located on the pump (or the gauge itself, if
applied) must be loosened in order to bleed off the air con-
tained in the suction line and bring the pump delivery pres-
sure to zero.
Do not illuminate the photocell; otherwise, the
burner will fail to start.
WARNING
➤ Start the burner by closing the control device and the electri-
cal line main switch.
The pump must rotate in the direction indicated by the arrow
marked on the cover or the pump body.
➤ When the light oil begins to flow out of the gauge attach-
ment, the pump is primed.
At this point, stop the burner immediately.
The time required for this operation depends upon the diameter
and length of the suction tubing. If the pump fails to prime at the
first starting of the burner and the burner locks out, wait approx.
40 seconds, reset the burner, and then repeat the starting oper-
ation as often as required.
the a.m. operation is possible because the pump
is already full of fuel when it leaves the factory.
If the pump has been drained, fill it with fuel
WARNING
through the opening on the vacuum meter prior to
starting; otherwise, the pump will seize.
Whenever the length of the suction piping ex-
ceeds 20-30 meters, the supply line must be filled
by hand using a separate pump.
Once the pump has been primed, screw in the plug or the gauge
on the pump's delivery line tightly and close the control devices.
20098582
Installation
20
GB
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