Action
Inspec-
tion
Mainte-
nance
level 1
Mainte-
nance
level 2
Mainte-
nance
level 3
Required material
described in document
OI
OI
SI
SI
Interval
daily
≤ 1 year
≤ 1.5
years
≤ 3
years
Inspection
Visual and acoustic pump
check
● Checking lubricant level
and color of the lubricant
● Checking lubricant level of
the sealing oil
■
● Checking vacuum pump for
leaks
● Checking vacuum pump for
running noises
● Check the overflow valve
for unusual noises
■
Maintenance level 1
Clean the vacuum pump
● Pump housing from outside
● Flushing suction chamber
with a suitable cleaning
agent adapted to the proc-
ess
● Check and clean overflow
valve
■
as re-
quired
Lubricant
Suitable cleaning
agent, compatible
with the process
● Changing lubricant and
sealing oil
■
Maintenance level 2
● Checking coupling for dam-
age, replacing toothed ring
if necessary
● Changing radial shaft seal
rings and protective
sleeves
● Clean the gear chambers
and replace the seals
■
Maintenance kit with
wearing parts of the
coupling and the ra-
dial shaft seal rings
Maintenance level 3
Dismantling and cleaning vac-
uum pump
● Replace the seals and all
wearing parts
● Replace 4 piston bearings
(ball bearings/roller bear-
ings)
● Replace overflow valve
wear parts
■
Overhaul kit
Lubricant
Option
● Magnetic cou-
pling set
● Set of gear
wheels
Checking critical components
and replacing if necessary:
● Checking magnetic cou-
pling for damage
● Calibrate the temperature
sensor with the reference
temperature
● Checking gear wheels for
breaks
■
Tbl. 5:
Maintenance intervals
Maintenance
33/54
