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Troubleshooting
7
Troubleshooting
Problem
Heavy oil foam in
the float chamber
due to excessive
amounts of air
sucked in (in excess
of the possible sep-
aration capacity of 4
l/h.
Oil cannot be
sucked in or steady
flow keeps being
interrupted.
24
Repair work may only be carried out by qualified, specially trained
personnel.
Table 6: Troubleshooting
Possible reason
Leak in the suction pipe.
Leaks in the screw con-
nections at the suction
side
Initial commissioning with-
out separate suction
pump.
Suction line rating too
great.
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
cushion in the suction line..
Burner pump does not
generate a sufficient vacu-
um.
– English –
Remedy
Perform a tightness test of
the suction line (vacuum test
or pressure test).
Seal the screw connection.
Use a suction pump.
Observer DIN 4755-2: Flow
speed 0,2-0,5 m/s.
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 sealing sur-
faces for damage. Close the
stop valve at the withdrawal
fitting and perform a vacuum
test (at least -0.6 bar) at the
supply connection of the oil
de-aerator.
Perform a suction test at the
pump. The pump must gen-
erate a vacuum of at least
-0.4 bar.
FloCo-Top-1K / 223
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