7.2 Checklist for inspection and maintenance
Notes on maintenance intervals
The times for the maintenance intervals depend to a great extent on the process condi-
tions; they apply for working with clean and inert gases. The use of corrosive process gas-
es can substantially curtail the maintenance intervals.
● Agree shorter maintenance intervals for extreme loads or for specific processes with
Maintenance intervals
You can carry out the
inspection
yourself.
We recommend Pfeiffer Vacuum Service for carrying out maintenance work of
Mainte-
nance Level 1
and
Maintenance Level 3
(revision). If the required intervals listed below
are exceeded, or if maintenance work is carried out improperly, no warranty or liability
claims are accepted on the part of Pfeiffer Vacuum. This also applies wherever parts other
than original spare parts are used.
Action
Inspection Maintenance
level 1
Mainte-
nance lev-
el 3
Required mate-
rial
described in document
OI
Interval
Monthly
5000 h, or
once a year
at the latest
16000 h or
every
4 years
Inspection
Visual and acoustic pump check
● Check the lubricant level and
color of the lubricant
● Check vacuum pump for leaks
■
● Check the coolant level of the
heat exchanger if installed
■
Maintenance level 1 – replacing lubricant and filter
● Changing the lubricant
■
Lubricant
● Check electric connections and
monitoring equipment
■
● Inspect the filter of the gas bal-
last valve if installed, and
change as necessary
■
Gas ballast filter
(optional)
● Clean the outside of the pump
housing
● If installed, inspect silencer
and clean as necessary
● Clean magnetic sealing plug
■
Suitable clean-
ing agent, com-
patible with the
process
Maintenance level 3 – overhaul
● Dismantle and clean the vac-
uum pump
● Change wear parts
● Changing the bearings
■
Contact Pfeiff-
er Vacuum Serv-
ice
Tbl. 13:
Maintenance intervals
7.3 Checking the lubricant level
Checking the fill level
The correct fill level is between the MIN/MAX markings or within the ring mark on the sight
glass.
Maintenance
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