Connecting Gases
Gemini VII 2390 Confirm
44 Gemini VII 2390 Confirm Installation Instructions and Checklist
Feb 09
Cleaning and Verifying the Gas Lines
You should always clean the gas line and verify there are no leaks at the connections after you
connect a gas bottle. 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. Select
Unit [n]
and make sure that Manual Control is disabled (there is no check mark
next to Enable Manual Control).
2. Select
Unit [n] > Diagnostics
; the Service Test dialog is displayed.
3.
Click the down arrow to the right of the
Test
field and select
Clean and Verify Analysis
Gas Line Rev. [latest revision letter]
.
This procedure uses the analysis gas as an example. Select
Clean and Verify Helium
Gas Line Rev. [latest revision letter]
if the helium bottle is being verified.
Make sure the Pressure
Control knob is open
OPEN (CW)
Gas Bottle Shut-Off valve
CLOSED (CW)
Regulator Shut-Off valve
OPEN (CCW)
Low-pressure gauge
14 - 15 psig
CW = Clockwise
CCW = Counterclockwise
