9 Maintenance
9.1 Maintenance information
WARNING
Risk of injury from reactive, potentially explosive, or otherwise hazardous gas/air mixtures
during maintenance
Uncontrolled leakage of process gases may result in the formation of explosive gas-air mixtures after
opening the vacuum pump. Ignition can cause very serious injuries.
► Ensure that the suction chamber is sufficiently inert before starting maintenance work.
► Ensure a closed inert gas system in order to avoid zone entrainment as a result of process gas
escaping.
WARNING
Danger to life from electric shock during maintenance and service work
There is a danger to life from electric shock when making contact with live components that still exist
after the vacuum pump has been switched off.
► Disconnect the vacuum pump safely from the mains.
► Wait until the vacuum pump comes to a standstill (rotation speed = 0).
► After switching off the vacuum pump, wait another 5 minutes until the capacitors have dis-
charged.
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
► Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
► Decontaminate affected parts before carrying out maintenance work.
► Wear protective equipment.
WARNING
Crushing and cutting danger on unprotected parts from unforeseeable automatic run-up dur-
ing maintenance.
During activities on exposed mechanical components, there is a risk of crushing or cut injuries from
sudden run-up.
► Switch off the vacuum pump before any maintenance work and work.
► Vent the vacuum pump to atmospheric pressure.
► Disconnect the vacuum pump safely from the mains.
► Secure the vacuum pump against re-start.
► Disconnect the mains cable from the vacuum pump.
NOTICE
Danger of property damage from improper maintenance
Unprofessional work on the vacuum pump will lead to damage for which Pfeiffer Vacuum accepts no
liability.
► We recommend taking advantage of our service training offering.
► When ordering spare parts, specify the information on the nameplate.
General cleaning and maintenance work
● Clean the ventilation grille
● Clean the outside of the vacuum pump
Maintenance
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