3.2 Inline (Inlet) Filter
Check inline (inlet) filter on a weekly basis. The filter cartridge should be cleaned or replaced when dirty.
Consult Airtech Inc. for replacement element information.
Caution: Depending on the mounting position of the filter, be careful not to allow accumulated foreign material
to
fall in the pump suction inlet when removing the filter cartridge. Horizontal filter installation is
recommended to
prevent this.
3.3 Exhaust Filter
Replace these filters every 9 to 18 months of operation or as necessary. The service life of these filters varies
depending upon the application and frequency of oil change. It is necessary to change these filters only when
they become clogged. Indications of clogged filters are smoke or oil mist coming from the exhaust of the pump,
higher than normal motor current, and the exhaust pressure gauge reading of 3 psig or greater.
Do not clean or re-use these filters. Filters must be disposed of in a proper way as they might contain toxic
substances carried over from the process. Replace O-rings on filter when changing.
3.4 Maintenance Chart
See the motor manufacturer’s manual for the periodic motor maintenance.
Daily: visually check oil level and color.
Weekly: inspect inline (inlet) filter.
Every 2-6 months: drain and discard oil from pump while hot. Refill with fresh oil. Every
9-18 months: replace exhaust filter elements and O-ring.
The operating life of the pump is greatly enhanced based on the oil quality and condition of the filters.
Periodic maintenance will ensure a reliable operating vacuum pump.
3.5 Overhaul Kit and Accessories
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