Micromeritics GEMINI VII 2390 - Clean and Verify the Gas Line

6 Gas Connections
CLEAN AND VERIFY THE GAS LINE
If using a keypad with the analyzer, skip this topic. SeeClean and Verify the Gas
Line on page3 - 4 .
Unit [n] > Diagnostics
Always clean the gas lines and verify there are no leaks at the connections after a gas cylinder is
connected. This test examines the gas line from the analyzer to the gas cylinder, then from the
analyzer to the regulator shut-off valve. A report is generated at the completion of the test to verify
that it has passed or failed. Causes and corrective action for a failure are provided.
Before beginning, confirm that the state for valves and the low pressure gauge are as follows:
A. Gas tubing to instrument
B. Gas regulator shut-off valve -
OPEN
C. Low pressure gauge - 14-15
psig
D. High pressure gauge
E. Gas cylinder shut-off valve -
CLOSED
F. Regulator connecter nut
G. Regulator control knob -
OPEN
H. Brass reducer fitting
1. Click the down arrow to the right of the Test field and select Gas Line Clean and Verify #
Rev [n]. This procedure uses the analysis gas as an example. Select Clean and Verify
6 - 6
Gemini VII 2390 Installation Instructions and Checklist
239-42870-02 Rev (B) — May 2021