Afriso EURO-INDEX FloCo-Top-1K Notice Technique page 48

Problem
Liquid column cannot be
sucked in or steady flow
keeps being interrupted
Other malfunctions
Troubleshooting
Possible reason
Small leaks (for exam-
ple, at the screw con-
nections between the
withdrawal fitting) allow
air to get into the suction
line, even when the sys-
tem is idle.
Burner pump does not
generate sufficient vac-
uum
-
Repair
Seal the cylindrical
screwed pipe connec-
tions at the housing with
flat copper gaskets (air-
tight)
Use a stiffener in the
case of soft or semi-soft
copper pipes
Check all sealing sur-
faces for damage
Close the shut-off valve
at the withdrawal fitting.
Perform a vacuum test
(at least -0.6 bar) at the
flow connection of the
de-aerator
Perform a suction test at
the pump. The pump
must generate a vac-
uum of at least -0.4 bar
Contact the AFRISO
service hotline
FloCo-Top-1K
EN
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