8.2 Checklist for inspection and maintenance
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.
You can carry out maintenance work at
maintenance level 1
yourself.
We recommend Pfeiffer Vacuum Service for carrying out maintenance work at
maintenance level 2
and
maintenance level 3
(revision). If the required intervals listed below are exceeded, or if mainte-
nance 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.
Action
described in docu-
ment
Inspec-
tion
OI
Cleaning
OI
Mainte-
nance
level 1
OI
Maintenance
level 2
MM
Mainte-
nance level
3
MM
Required
material
Interval
Weekly
≤ every
six
months
≤ 1 year
≤ 16000 hours
≤ 5 years
Inspection
Visual and acoustic
pump check
● Check operating
fluid fill level
● Check operating
fluid color (con-
tamination)
● Check saturation
of the exhaust fil-
ters
● Check vacuum
pump for leaks
■
Check accessories
(in accordance with
respective operating
instructions)
■
Cleaning
● Clean the out-
side of the pump
housing
● Clean the fan
cap on the motor
and pump
● Clean the elec-
tronic compo-
nents and cooler
filter
■
Maintenance level 1 – operating fluid replacement
● Changing the
operating fluid
● Change the ex-
haust filter
■
Operating
fluid
Mainte-
nance kit
Maintenance level 2 – RSSR change
● Replace the radi-
al shaft seal ring
1)
■
RSSR set
Maintenance level 3 – overhaul
1)
In event of noticeably high loss of operating fluid from operating fluid escaping between the pump housing and
motor or fan, the radial shaft seal rings have to be replaced.
Maintenance
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