The following section describes the tasks for cleaning and maintaining the vacuum pump. More ad-
vanced works are described in the service instructions.
Prerequisites
● Vacuum pump is switched off.
● Vacuum pump is vented to atmospheric pressure on the suction side.
● Vacuum pump is cool.
Preparing maintenance
1. Safely disconnect the drive motor from the mains.
2. Secure the motor against switching back on.
3. For maintenance work, only dismantle the vacuum pump to the extend needed.
4. Dispose of used operating fluid according to applicable regulations in each case.
5. When using synthetic operating fluid, please observe the associated application instructions.
6. Only use alcohol or similar media to clean the pump parts.
7. Always perform a leak test after carrying out maintenance and inspection work.
7.2 Checklist for inspection and maintenance
You can carry out maintenance work at
Level 1
yourself.
We recommend that maintenance work at
Levels 2 and 3
(inspection) be carried out by Pfeiffer Vac-
uum Service. 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
if original spare parts are not used.
Notes on maintenance intervals
Depending on the process, the required maintenance intervals may be shorter than the ref-
erence values specified in the table.
● Consult with Pfeiffer Vacuum Service about shorter maintenance intervals for extreme
loads or for specific processes.
Action
described in document
Inspec-
tion
BA
Mainte-
nance
level 1
BA
Mainte-
nance
level 2
MM
Mainte-
nance
level 3
MM
Required
material
Interval
daily
≤ yearly
≤ 2 years
≤ 4 years
Inspection
Visual and acoustic pump check
Check operating fluid:
● Check fill level
● Check color (contamination)
● Check vacuum pump for leaks
■
Inspect the OME filter (refer to the
operating instructions)
■
Maintenance level 1 – operating fluid replacement
Clean the outside of the vacuum
pump:
● Pump housing
● Clean motor fan cap
Changing the operating fluid
■
Operating
fluid
1)
Mainte-
nance kit 1
Additional activities:
● Remove cap
● Clean inside cap and sight
glass, and clean the outside of
the pumping system (without
cleaning agent)
● Remove and clean gas ballast
valve, replace wearing parts
■
1)
Operating fluid is required for all maintenance activities, and must be ordered separately in each case.
Maintenance
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