9 Maintenance
9.1 Maintenance information
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
Risk of crushing from rotating parts
Fingers and hands may be caught by rotating pistons within the connection flange. This results in se-
vere injuries.
► Keep limbs out of the reach of the roots 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.
Cleaning and maintenance work
● Cleaning/changing the air filter
● Cleaning the suction chamber and roots piston
● Change the lubricant
● Any more extensive tasks are part of maintenance
level 3
Maintenance instructions
1. Switch off the vacuum pump.
2. Allow the vacuum pump to cool if needed
3. Vent the vacuum pump to atmospheric pressure via the intake side.
4. Disconnect the electronic drive unit from the mains.
5. Secure the electronic drive unit against re-start.
6. After switching off the vacuum pump, wait for at least another 5 minutes until the capacitors have
discharged before starting any work.
7. Remove the vacuum pump from the system if necessary.
9.2 Checklist for inspection and maintenance
Notes on maintenance intervals
Depending on the process, the required maintenance intervals may be shorter than the ref-
erence values specified in the table.
● Consult with Pfeiffer Vacuum Service about shorter maintenance intervals for extreme
loads or for specific processes.
Maintenance
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