Troubleshooting
7 Troubleshooting
During the warranty period, intervention in the pumps and accessory components may only
be made by ILMVAC GmbH.
Trouble
Cause
Remedy
Combination pump system,
electrically dead
Check the power supply
Rotary vane pump is rotat-
ing in the incorrect direction
Check the power supply
Oil level too low in rotary
vane pump
Refill oil
Relief valve defective
Replace the relief valve
Suction pipes of the rotary
vane pump, rotary vane
pump are defective
Check the lines and connecting
elements for leaks
Rotary vane pump defective Repair by ILMVAC service de-
partment or replace if necessary
Diaphragm pump defective
Repair by ILMVAC service de-
partment or replace if necessary
The combination pump
system does not gen-
erate a vacuum
Oil is heavily contaminated
by condensate
Change oil
Suction line: diaphragm
pump, oil casing of the ro-
tary vane pump leak
Check the line for leaks, replace
lines and connecting elements if
necessary
Emergency valve defective
Replace the emergency valve
Diaphragm pump defective
Repair by ILMVAC service de-
partment or replace if necessary
For Rotary vane pump -
Bubbler adjusted
Set with vacuum gauge
The pressure in the oil
casing of the rotary
vane pump is too high
(>
10
0 mbar at the ma-
nometer tube spring),
condensate is therefore
starting to collect
(can be seen at the oil level
gauge, increasing intake
pressure can be seen on
the vacuum gauge)
Diaphragm defective
Replace diaphragm
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