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.
Signs for saturation of the exhaust filter:
● higher current consumption of the motor
● increased emission of operating fluid mist at the gas outlet
● increased pressure in the operating fluid separator (pressure gage display in the red area).
7.4.1 Dismantling the exhaust filters
Prerequisites
● Vacuum pump switched off
● Vacuum pump vented to atmospheric pressure
● Vacuum pump cooled
Required tools
● Allen key,
WAF 6
● Socket key,
WAF 10
● Slot screwdriver
8
1
9
2
3
4
5
6
7
Fig. 20:
Dismantling the exhaust filters
1 Exhaust filter
6
Flat seal
2 Filter spring
7
Filter material
3 Operating fluid separator
8
Screw (4x)
4 Separator cover plate
9
Filter support
5 Screw (12x)
Procedure
1. Remove the separator cover plate.
– Pay attention to the flat seal
2. Remove the filter material.
Maintenance
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