1
2
3
Fig. 23:
Cleaning the gas ballast filter
1 Gas ballast filter
3
Gas ballast line
2 Gas ballast valve
Removing and cleaning the gas ballast filter
1. Dismantle the gas ballast filter.
2. Clean the gas ballast filter using compressed air.
3. Replace the gas ballast filter in the event of major contamination or damage.
4. Check and clean the gas ballast line using compressed air if the gas ballast line is clogged.
7.7 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
This allows the vacuum pump to reach the final pressure and no operating fluid escapes at the exhaust
flange.
Prerequisites
● Vacuum pump switched off
● Vacuum pump vented to atmospheric pressure
● Vacuum pump cooled
● Operating fluid drained
● Exhaust filter changed in the operating fluid separator
Required consumable material
● Operating fluid of the vacuum pump
● Parts according to the maintenance kit
● Compressed air
Required tool
● Hexagonal wrench,
WAF 4
Maintenance
48/70
