7 Maintenance
7.1 Maintenance instructions
WARNING
Health risk and environmental damage due to poisoning on toxic contaminated parts or devi-
ces
Toxic process media result in contamination of the devices or parts thereof. During maintenance work
there is a health risk due to contact with these poisonous substances. The non-permitted disposal of
toxic substances results in environmental damage.
► Take appropriate safety precautions and avoid health risks or environmental hazards due to toxic
process media.
► Decontaminate the affected parts before carrying out maintenance work.
► Wear protective equipment.
CAUTION
Danger of injury from moving parts!
After a power failure or a standstill as a result of overheating, the motor restarts automatically.
► Safely disconnect motor from the mains.
► Secure motor against reactivation.
► Dismantle the pump for inspection, away from the system if necessary.
Danger of property damage from improper maintenance
Pfeiffer Vacuum is not liable for pump damage caused by work being carried out
incorrectly.
● We recommend looking into our service training offering.
● When ordering a replacement part, provide the data from the pump rating plate
where possible.
In the following, we describe the work involved in pump cleaning and maintenance. More advanced
works are described in the service instructions.
Maintenance instructions
► Shut down the vacuum pump and allow it to cool if necessary.
► Vent the pump to atmospheric pressure via the intake side.
► Disconnect the drive motor from the mains and secure it against reactivation.
► If you are carrying out maintenance work, disassemble the pump only to the extent necessary.
► Dispose of used operating fluid according to applicable regulations in each case.
► When using synthetic operating fluid, please observe the associated application instructions.
► Only use alcohol or similar media to clean the pump parts.
7.2 Maintenance instructions for M or MC version magnetic coupling
WARNING
Danger of injury from strong magnetic field
There is a risk of injury for people with pacemakers and medical implants.
► Make sure that such individuals do not enter the sphere of influence (≤ 2 m) of the magnetic field.
– Identify rooms in which magnetic couplings are openly accessible with the symbol: "
No ac-
cess for people with pacemakers
"
► Always keep disassembled couplings away from computers, data carriers, and other electronic
components.
This safety note applies to
drive system disassembly
in pump versions with magnetic coupling.
Maintenance
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