Troubleshooting
48
20901118_EN-US_PC301x VARIO select Serie_V1.3_100720
Error
Cause
Remedy
Person-
nel
Check gas ballast
cap.
Replace defective
components.
No or very little suc-
tion power
Deposits inside the
vacuum pump.
Diaphragms or
valves defective.
High level of vapor
generated in the
process.
Clean and check
pump heads.
Replace di-
aphragms and
valves.
Check process pa-
rameter.
Specialist
No or very little suc-
tion power
Vacuum line too
long.
Use vacuum lines
with larger cross-
section.
Resp.
specialist
No display
Pumping unit
switched off.
Power plug not cor-
rectly plugged in or
pulled out.
VACUU·BUS plug-
in connection or ca-
bles defective or
not connected.
Controller switched
off or defective.
Switch on Pumping
unit.
Check power con-
nection and cable.
Check
VACUU·BUS plug-
in connection and
cables to the con-
troller.
Replace defective
components.
Operator
Condenser (chiller)
defective
Mechanically dam-
aged.
Send in.
Resp.
specialist
Loud operating
noises
No hose installed.
Check hose and in-
stall it correctly.
Operator
Loud operating
noises
Outlet line open.
Glass flask on EK
missing.
Torn diaphragm or
loose diaphragm
clamping disc.
Ball bearing defec-
tive.
Check outlet line
connections.
Connect outlet line
to an extraction
system or fume
hood.
Mount the glass
flask
Service the vacuum
pump and replace
defective parts or
send in the device.
Specialist
