VWR RV2.5+ - Troubleshooting

VWR Rotary Vane Pump ver 1.3 23.11.2020
10.0 Troubleshooting
Review the information in the table below to troubleshoot operating problems.
Trouble
Cause
Remedy
by:
with:
Vacuum pump
does not start
No power supply
Qualified electrician
Check electrical installation
Motor defective
Service workshop
Exchange
Coupling defective
Repair and/or exchange
Starting temperature too low
User
Put vacuum pump in a warm place
corresponding to the starting
temperature
Oil is resinous after too long
storage
User or Service
workshop
General maintenance / cleaning
Vacuum pump
does not
generate a
vacuum
Ultimate pressure few mbar or
atmospheric pressure, oil
shortage
User
Top-up oil
Oil is dirty
Operate with gas ballast, or perform
oil change with flushing
Oil supply to pump unit
interrupted or reduced
User
Check that the oil circulation is
functioning, measure the oil pressure
at operating temperature, 1 – 1.2 bar
overpressure, check that the pipes
are clear and have no leaks
Gas ballast valve open
User
Close the gas ballast valve
Shaft seals defective
User or Service
workshop
Exchange
Work or pressure control valve
defective
Exchange
Intake valve defective
Repair
Oil supply to pump aggregate
reduced Oil superimposition
interrupted by work valve
Repair
Built-up pressure in the oil
casing too high because of
exhaust gas pipe or oil mist
filter
User or Service
workshop
Check exhaust pipe, change filter
insert
Vacuum pump
runs very
loudly
Motor, rotary vanes and/or
shaft seal rings defective,
rotary vane spring broken
Repair and/or exchange
Vacuum pump
Vacuum pump oil supply
interrupted
User or Service
workshop
Check that the oil circulation is
functioning, measure the oil pressure