Accessories required:
▪ Replacement timing belt
▪ 50 Hz Versions: EK6528531
▪ 60 Hz Versions: EK6528533
Refer to Tools r
equired for maintenance on page 22 for more details.
7.4 Replace the belt
CAUTION:
Obey the safety regulations. Make sur
e that the main power source is disconnected
and all parts with electric supply are covered or closed.
Make sure that there is no pressure difference between inlet and outlet of the pump
during the belt change as the pressure difference will force the pump to rotate. If this
can not be ruled out disconnect the pump from the vacuum system before changing
the belt.
CAUTION:
Loosening the hexagon nuts of rotors will cause sever
e bearing damages.
7.4.1 Disassemble drive enclosure
1. Use a 5 mm Allen key to remove the 3 screws which secure the drive
enclosure.
2. Separate the drive enclosur
e from the pump.
3. Remove the foam by hand.
1. Foam 2. Drive enclosure1. Foam 2. Drive enclosure
23
300766038_002_C3 - 09/2021 - © Leybold
Maintenance
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