Micromeritics AccuPyc 2 1340, Operator'S Manual

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AccuPyc II 1340 Troubleshooting
Aug 2013 5-3
Unit will not equilibrate,
or results are not
reproducible. Sample outgassing. Prior to analysis, remove moisture and
contaminants from sample. (Refer to
Preparing and Loading a Sample ,
page 4-2 .)
Pycnometer leaks. Check cap O-ring for defects. Regrease
or replace the O-ring, if necessary.
(Refer to
Greasing the Chamber Cap
O-Ring , page 5-4 or Replacing the
Chamber Cap O-Ring , page 5-5 .)
While in Manual Mode, with the cap
installed, open all valves. With helium
flowing through the pycnometer, actuate
the expansion valve repeatedly for
approximately 1 minute. This will
remove lint, which could cause a leak,
from the valve seat. Repeat the process
for the vent valve with the inlet and
expansion valves open.
Dust filter on 2000 cm
3
unit is clogged or
leaking to atmosphere.
Clean the dust filter. Refer to Cleaning
the Dust Filter (2000-cm3 units only) ,
page 5-9 .