Micromeritics TRISTAR II PLUS Operator's Manual page 232

11 Troubleshooting
Schematic.
5. The following series of prompts display requiring operator response:
a. This is the gas line clean and leak check test for inlet port [n]. Inlet ports being tested
must be connected to a gas cylinder according to the user manual. A Nupro isolation
valve should be installed on the line between the analyzer and the regulator.
b. The test starts with a manual leak check (requires Snoop or equivalent, and IPA), then
the line and regulator are evacuated for 20 minutes for cleaning. Next, the leak rate of
the gas line is determined.
c. With the regulator set to 15 psig, open the cylinder, regulator shut-off valve, and isol-
ation valve. Check each joint for bubbles with Snoop or equivalent. If a joint is leaking,
attempt tightening (without over-tightening) or replace ferrules.
d. When there are no leaking joints, use IPA to remove water from each joint, then wipe
dry.
e. Close the gas cylinder valve. Leave the regulator shut-off and isolation valves open.
f. User will be needed in 30 minutes to close the isolation valve. Click
mated testing.
6. Click OK when the test is complete. The test reports display.
11 - 10
OK to begin auto-
TriStar II Plus Operator Manual
303-42800-01 (Rev M ) — Sep 2023