Degas Port; Replacing The Vacuum Pump Exhaust Filter - Micromeritics ASAP 2020 Confirm Operator's Manual

ASAP 2020 Confirm

Degas Port

1. Using a wrench, remove the degas port fitting and remove the filter and O-ring.
2. Replace the filter and the O-ring. Carefully reassemble the sample tube fitting, filter, O-
ring and manifold connector, and tighten by hand. Then tighten with the wrenches to
prevent leaks when evacuated.
To avoid degassing problems, the new filter and O-ring must be clean. Do not
touch them with bare hands.

Replacing the Vacuum Pump Exhaust Filter

This procedure does not apply, and is not required, for dry vacuum pumps.
The gases used by the ASAP 2020 are exhausted by vacuum pumps. An exhaust filter is
installed on the exhaust port of each vacuum pump. The filter minimizes the release of oil
vapor and should be replaced when it becomes so saturated with oil that it is ineffective.
Exhaust filters are used on the vacuum pump to minimize the release of oil vapors.
The gases used are diluted substantially upon being released from the vacuum
pumps. However, it may be desirable in some locations to provide a fume hood for
added protection from hazardous gases and vapors released into the work area.
1. Using a flat-head screwdriver, remove the screws from the vacuum pump panel on the
front of the analyzer, then remove the panel to access the pump.
2. Loosen the wing nut of the vacuum clamp at the vacuum pump exhaust port. Swing the
clamp fastening screw away from the exhaust port. Open the clamp to remove it from the
port.
8-8
Filter
Clamp
Preventive Maintenance
202-42811-01 - Mar 2011