19
Maintenance
7
Maintenance
7.1
Precautions
Switch off the pump, vent it to atmospheric pressure and let it cool down.
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 sub-
stances 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, maintenance, repair or overhaul procedures are not performed proper-
ly. This also applies if replacement parts other than Pfeiffer Vacuum OEM replace-
ment parts are used.
WARNING
Pump parts may be contaminated from pumped media!
Danger of poisoning due to contact with harmful substances.
Decontaminate the pump before carrying out any maintenance work.
In the event of contamination, take suitable safety precautions to prevent your health
from being harmed by any dangerous substances.
Activity
daily
as required;
at least
annually
as required;
at least
every 2
years
as required;
at least
every 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 fil-
ter (if existent)
X
Change operating fluid
X
Cleaning the pump and renew the seals
X
Clean gas ballast valve and silencer
nozzle
X
Clean the fan intake side
X
Clean or change vacuum safety valve
X (PV)
Clean or change exhaust valves
X (PV)
Change vanes and hydraulic vane
X (PV)
Depending on the process, the required replacement intervals for lubricants and the intervals for
inspection, maintenance and overhaul may be shorter than the guide values specified in the table.
Consult with Pfeiffer Vacuum Service if necessary.
