Inspecting And Changing Vacuum Pump Fluid; Inspecting Fluid; Changing Fluid - Micromeritics ASAP 2020 Confirm Operator's Manual

Preventive Maintenance
3. Make sure the dust cover has been removed. Lift the exhaust filter from the exhaust port
and discard it. Install a new filter on the exhaust port and push the filter against the O-ring.
4. Open the clamp and place it around the flange of the exhaust port and the flange of the
exhaust filter. Swing the clamp fastening screw toward the exhaust port until it fits into the
slot in the other half of the clamp. Tighten the wing nut.
5. Reinstall the vacuum pump panel.

Inspecting and Changing Vacuum Pump Fluid

This procedure does not apply, and is not required, for dry vacuum pumps.
The fluid in the vacuum pump should be changed every three months or when the efficiency
of the vacuum pump declines (requiring increased time to reach vacuum levels). The fluid
can first be inspected to determine if a change is necessary.
Use oil supplied by Micromeritics, or refer to the manual for the vacuum pump for other
acceptable oils.

Inspecting Fluid

Inspect the fluid as follows:
1. Remove the vacuum pump panel (located on the left front side of the analyzer).
2. View the vacuum pump fluid through the oil level indicator window. Fluid in good
condition is clean, clear or light in color, and transparent. If the color of the fluid is
darkened, the fluid should be changed.

Changing Fluid

Change the fluid as follows:
1. Place the analyzer ON/OFF switch in the OFF position.
If the high vacuum pump is installed, wait for it to completely stop (approximately
10 minutes).
2. Remove the vacuum pump panel (if not already removed)
202-42811-01 - Mar 2011
ASAP 2020 Confirm
8-9