5 Maintenance
5.1 Leybold Service
Whenever you send us in equipment, indicate whether the equipment is con-
taminated or is free of substances which could pose a health hazard. If it is
contaminated, specify exactly which substances are involved. You must use
the form we have prepared for this purpose.
A copy of the form has been reproduced at the end of these Operating
Instructions: “Declaration of Contamination for Compressors, Vacuum Pumps
and Components”. Another suitable form is available from
www.leybold.com/ -> Documents -> Download Documents.
Attach the form to each pump.
This statement detailing the type of contamination is required to satisfy legal
requirements and for the protection of our employees.
We must return to the sender any equipment which is not accompanied by a
contamination statement.
5.2 Maintenance Intervals
See the table for the recommended maintenance intervals for the pumps.
Periodic and proper maintenance will keep the pump in a normal working
condition, and helps avoiding pump breakdowns and failures. Maintenance
intervals are process-dependent. In clean processes, you may increase the
maintenance intervals; in harsh processes, you may have to decrease them.
We recommend a service contract with Leybold.
We recommend to inspect the pump system and all components after
approximately 6 months under the process conditions. The inspection of the
components shall let corrosion attacks become apparent at an early stage
and indicate possible deposits of process dust. Depending on the findings,
changed maintenance and replacement intervals can become necessary for
specific components.
Service work Interval
Coolant level in the expansion vessel Monthly
Oil level check Monthly
PFPE level and colour Monthly
Gas ballast filter Yearly
N
2
pressure regulator Yearly
N
2
flow regulator Yearly
Vacuum pump bearings 5 years
Vacuum pump impeller seals 5 years
LVO 210 change (synthetic oil) Yearly
PFPE change (with clean / medium appli-
cation)
5 years
Water glycol mixture 5 years
Contamination
Form
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