Prerequisites
● Vacuum pump switched off
● Vacuum pump vented to atmospheric pressure
● Operating fluid drained
Required tool
● Strap wrench
Required aids
● Collection receptacle (> 1 l)
2
1
Fig. 20:
Changing the operating fluid filter
1 Operating fluid separator
2
Operating fluid filter
Procedure
1. Place a collection receptacle below the operating fluid filter.
2. Unscrew the operating fluid filter using a strap wrench.
– Pay attention to escaping operating fluid.
3. Apply oil to the sealing surface of the operating fluid filter.
4. Screw the operating fluid filter on finger-tight.
7.4 Change the exhaust filter in the operating fluid separator
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.
Change the exhaust filter annually
Pfeiffer Vacuum recommends replacing the exhaust filter in the operating fluid separator
annually, depending on the work process and the contamination incurred during the proc-
ess.
Maintenance
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