Maintenance
17
Turn off the vacuum pump, vent to atmospheric pressure and allow to cool, if neces-
sary.
Disconnect the drive motor from the mains and secure it so that it cannot be switched
on.
Only dismantle the pump as far as necessary in order to repair defects.
Dispose of used operating fluid in compliance with local regulations.
When using synthetic operating fluids or working with toxic substances or substances
contaminated with corrosive gases, the relevant instructions governing their use must
be observed.
Use only alcohol or similar agents for cleaning pump parts.
Checklist for inspec-
tion, maintenance
and overhaul
Certain repair and overhaul work should only be performed by Pfeiffer Vacuum Service
(PV). Pfeiffer Vacuum will be released from all warranty and liability claims if the required
intervals for inspection, maintenance, or overhaul are exceeded or inspection, mainte-
nance, repair or overhaul procedures are not performed properly. This also applies if re-
placement parts other than Pfeiffer Vacuum OEM replacement parts are used.
Activity
daily
as required;
at least annu-
ally
as required;
at least ev-
ery 2 years
as required;
at least ev-
ery 4 years
Check operating fluid level
X
Visual inspection (leak-tightness/oil leaks)
X
Check filter insert of external oil mist filter (if
existent)
X
Change filter insert of external oil mist filter (if
existent)
X
Change operating fluid
X
Change oil filter (if existent)
X
Cleaning the pump and renew the seals
X
Clean gas ballast valve and silencer
X
Clean the motor fan cap
X
Replace radial shaft seal
X (PV)
Clean or change vacuum safety valve
X (PV)
Clean or change exhaust valves
X (PV)
Change vanes
X (PV)
Check or change coupling
X (PV)
Depending on the process, the required replacement intervals for the operating fluid and the intervals
for inspection, maintenance and overhaul may be shorter than the guide values specified in the table.
Consult Pfeiffer Vacuum Service, if necessary.
