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).
Continuous monitoring of the filter resistance
► To continually monitor the filter resistance, use a manometer from the Pfeiffer Vacuum
7.4.1 Dismantling the exhaust filters
Number of exhaust filters may deviate from the example
Depending on the type of vacuum pump, between 1 and 8 exhaust filters are used. Filter
changing is described using 2 exhaust filters as an example.
● Always change all existing exhaust filters.
● Also change exhaust filters that are located behind the blind cover.
Prerequisites
● Vacuum pump switched off
● Vacuum pump vented to atmospheric pressure
● Vacuum pump cooled
Required consumable material
● Maintenance set level 1
Required tool
● Hexagonal wrench
SW 10
Maintenance
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