Troubleshooting
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Troubleshooting
Only manufacturing firm and authorized service workshops may work on the vacuum pump
and their accessories during the warranty period.
Trouble
Cause
Remedy
by:
with:
Combination
pump system
does not
generate
a vacuum
No power supply
Qualified
electrician
Check
electrical installation
Rotary vane pump is
rotating in the
incorrect direction
Oil level too low in
rotary vane pump
User or
Service
workshop
Refill oil
Overpressure valve
defective
Replace the overpressure
valve
Suction pipes of the
rotary vane pump
and/or diaphragm
pump are defective
Check the lines and
connecting elements for
leaks
Rotary vane pump
defective
Repair and/or exchange
Diaphragm pump
defective
Oil is heavily contami-
nated by condensate
Change oil
Pressure in the
oil casing of the
rotary vane pump
is too high
(outside the green
range),
condensate is
therefore starting
to collect
(can be seen at the
oil level gauge,
increasing intake
pressure can be
seen on the
vacuum gauge)
Suction line of the
diaphragm pump,
Oil casing of the
rotary vane pump leak
User or
Service
workshop
Check the line for leaks,
replace lines and connect-
ing
elements if necessary
Overpressure valve
defective
Replace the overpressure
valve
Diaphragm pump
defective
Repair and/or exchange
Bubbler adjusted -
Rotary vane pump
Service
workshop
Check Bubbler setting
Diaphragm defective -
Diaphragm pump
User or
Service
workshop
Replace diaphragm
Cable(s)
defective and/or brittle
Qualified
electrician
Exchange of the cable(s)
