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Les langues disponibles
Troubleshooting
Problem
Oil cannot be
sucked in or steady
flow keeps being
interrupted
Burner switches off
at irregular intervals
due to malfunctions
Other malfunctions
26
Possible reason
Small leaks at the screw
connections between the
withdrawal fitting at the
tank and the burner allow
air to get into the suction
line. This is also the case
during idle times until the
vacuum no longer exists.
This generates an air cush-
ion in the suction line
Burner pump does not
generate a sufficient vacu-
um
Air accumulations in the
suction line because pipe
cross section is too great.
When the anti-siphon valve
opens after the pre-
aeration time of the burner,
a greater bubble may pass
through which causes the
burner to switch off.
–
– English –
Repair
Use cylindrical screwed pipe
connections at the housing
and seal them with flat cop-
per gaskets (air-tight). Use a
support bushing in the
case of soft or semi-soft
copper pipes. Check all seal-
ing surfaces for damage.
Close the stop valve at the
withdrawal fitting and per-
form a vacuum test (at least
-0.6 bar) at the supply con-
nection of the oil vent.
Perform a suction test at the
pump. The pump must gen-
erate a vacuum of at least
-0.4 bar.
Use a suction line as per
chapter 4.2, page 5
Send the product to the
manufacturer
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