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8
Troubleshooting
Any malfunctions that cannot be removed by means of the measures
described in this chapter may only be repaired by the manufacturer or by
qualified persons.
Problem
Heavy formation of
foam in the float cham-
ber due to excessive
amounts of air sucked in
(in excess of the possi-
ble separation capacity
of > 4 l/h)
Burner switches off at
irregular intervals due to
malfunctions
Troubleshooting
Possible reason
Suction line not tight
Screw connection not
tight
Initial commissioning,
no fuel was sucked into
the system before
Suction line rating too
great
(DIN 4755)
Air accumulations in the
suction line because
pipe cross section is too
great
Repair
Perform a tightness test
of the suction line (vac-
uum test or pressure
test)
Seal the screw connec-
tions
Use a suction pump
Observe the flow rate
0.2 - 0.5 m/s
(DIN 4755-2)
Properly rate the suction
line (see chapter "Deter-
mining the suction line
length")
FloCo-Top-2
EN
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