Micromeritics ASAP 2020 Confirm Operator's Manual page 262

ASAP 2020 Confirm
What Happened
Vacuum gauge shows
reading above 20
mHg, even after
extended pumping
through unrestricted
valve with analysis or
degas ports closed.
(continued)
Analysis valves cannot
be operated.
8-2
Table 8-1. Troubleshooting Chart
Why
Cold trap obstructed by
condensation.
Filter in port being used is dirty. Replace filter in port. Refer to
Leak in vacuum plumbing.
Vacuum pump turned off or
unplugged.
The alumina in the oil vapor trap
is holding moisture.
Circuit opened by circuit breaker. Reset breaker (press breaker
Cable from computer to the
instrument is loose.
Troubleshooting
(continued)
What To Do
Refer to Cleaning the Cold Trap
Tubes, page 8-15.
Replacing the Port Filters, page
8-7.
Check and tighten all connections
in vacuum plumbing, including
cold traps.
Check pump power plug and
power switch.
Replace or dry the alumina. Refer
to Replacing the Alumina in the
Oil Vapor Traps, page 8-12.
button) located on the right side
of the instrument. Refer to
Panel, page 2-5. If it does not
stay in or if it continues to trip,
contact appropriate service
personnel.
Make sure the cable is seated
properly.
202-42811-01 - Mar 2011
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