We recommend Pfeiffer Vacuum Service for carrying out maintenance work of
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 document
Inspec-
tion
BA
Maintenance
BA
Inspection
MM
Required
material
Interval
daily
≤ every six
months
≤ 1
years
≤ 4 years
Inspection
Visual and acoustic pump check
● Check operating fluid fill
level
● Check operating fluid color
(contamination)
● Check saturation of the ex-
haust filters
● Check vacuum pump for
leaks
■
Check accessories (in accord-
ance with respective operating
instructions)
■
Maintenance level 1 – operating fluid replacement
● Clean the outside of the
pump housing
● Clean motor fan cap
● Changing the operating flu-
id
● Changing the operating flu-
id filter
● Dismantle and clean the fil-
ter of the gas ballast valve
■
Operating flu-
id
Operating flu-
id filter
Maintenance level 2 – maintenance
● Change the exhaust filter
● Clean the operating fluid
separator and change the
seals
● Changing the operating flu-
id filter
■
Operating flu-
id
Maintenance
kit
Maintenance level 3 – overhaul
Dismantle and clean vacuum
pump, replace seals and all
wear parts:
● Storage
● Replace the radial shaft
seal ring
1)
● Clean or replace the ex-
haust valves
● Check the coupling and re-
place the sleeve
■
Overhaul kit
(without
vane)
Operating flu-
id
● Vane
■
as required
Set of vanes
Tbl. 8:
Maintenance intervals
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
33/60
