3. Check the screw in the filter spring.
– The tip of the screw must project approx. 2 to 5 turns of the thread beyond the filter spring.
4. Fit the separator cover plate with new flat seal.
5. Tighten the screws on the separator cover plate evenly.
– Tightening torque:
6 Nm
6. Assemble the exhaust line.
7.5 Cleaning the gas ballast filter
The gas ballast filter is soiled if the vacuum pump takes in ambient air containing dust during gas ballast
operation.
As the soiling increases, the throughput of the gas ballast filter decreases. The risk of condensation and
corrosion in the vacuum pump increases.
Required consumable materials
● Compressed air
● Industrial alcohol
● Soft cloth (lint-free)
2
3
1
Fig. 19:
Cleaning the gas ballast filter
1 Gas ballast line
3
Gas ballast filter
2 Gas ballast valve
Removing and cleaning the gas ballast filter
1. Dismantle the gas ballast filter.
2. Clean the gas ballast filter using alcohol.
3. Blow out the gas ballast filter from inside to out using compressed air.
4. Replace the gas ballast filter in the event of major contamination or damage.
5. Check the gas ballast line for congestion.
6. If a gas ballast line is plugged, disassemble it.
7. Blow out the gas ballast line using compressed air.
7.6 Cleaning the operating fluid return line
In order to guarantee correct functioning of the operating fluid return, Pfeiffer Vacuum recommends
cleaning the operating fluid return line and the float valve:
● with each operating fluid change
● with each exhaust filter change
Maintenance
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