Micromeritics Gemini VII 2390a, Operator'S Manual

Page: 248 / 426

Connecting Gases Gemini VII
9-22 239-42828-01 - Dec 2012
Cleaning and Verifying the Gas Line
Always clean the gas lines and verify there are no leaks at the connections after a gas bottle is con-
nected. This test examines the gas line from the instrument to the gas bottle, then from the instrument
to the regulator shut-off valve. A report is generated at the completion of the test verifying 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:
1. To start diagnostic testing, go to
Unit [n] > Diagnostics
.
2. Click the down arrow to the right of the
Test
field and select
Clean and Verify Analysis Gas
Line Rev [n].
This procedure uses the analysis gas as an example. Select
Clean and Verify
Helium Gas Line Rev [n]
if the helium bottle is being verified.
3. Click
Report after analysis
and select
Preview
as the destination. Click
OK
.
4. Click
Start
. From the
View
dropdown list, select either
Operation
,
Instrument Log
, or
Instrument Schematic.
Refer to
Start Analysis
, page
6-2
.
5. A series of prompts display on the screen requiring operator response. The length of time a test
will run is also indicated on the screen.
Regulator control knob

OPEN
Gas bottle shut-off valve

CLOSED
Regulator shut-off valve
OPEN
Low-pressure gauge

14 - 15 psig