7. Maintenance
7.1. Preventive maintenance schedule
Before carrying out any maintenance, repair work or adjustments, proceed as
follow:
▪ Stop the vacuum pump.
▪ Switch off the voltage.
▪ Effectively isolate the machine from all sources of under and/or overpressure
and make sure that the pump system is at atmospheric pressure level.
Warranty - Product Liability
Use only authorized parts. Any damage or malfunction caused by the use of
unauthorized parts is not covered by Warranty or Product Liability.
Service kits
For overhauling or carrying out preventive maintenance, service kits are available
(see Service kits on page 68).
Service contracts
We offer several types of service contracts, relieving you of all preventive
maintenance work. Consult your nearest Customer Centre.
General
When servicing, replace all removed O-rings and washers.
Interval
The local Customer Centre may overrule the maintenance schedule, especially
the service intervals, depending on the environmental and working conditions of
the vacuum pump.
The longer interval checks must also include the shorter interval checks.
T
able 4 Preventive maintenance schedule
Operation
Duty**
Normal Medium Harsh
Check oil level and condition 24 h 24 h 24 h
Clean dirt trap at pump inlet Monthly Monthly Monthly
Clean anti suck back valve at pump inlet Yearly Yearly Yearly
Change oil*, oil filter (if installed) and exhaust filter
▪ Mineral oil
4000 h 2000 h 1000 h
▪ Synthetic oil
8000 h 4000 h 1000 h
Clean the pump, the radiator and the motor fan
guard
2000 h 1000 h 500 h
Check the vanes. Replace them, if needed 15000 h 10000 h 5000 h
Maintenance
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