Agilent Technologies Agilent 7890 Series Maintenance Manual page 343

WA R N I N G
Maintaining Your GC
Valve rotor index pin
Valve stop Off position
Plumb the new valve using the existing fittings.
12
Hazardous sample gases may be present.
5. Carrier gas in
1. Sample in
13 Turn on the carrier and sample gases, then check for
leaks at the valve fittings.
• Using the needle- nosed pliers to toggle the valve, check
both the On and Off positions.
When leak free, set the valve to Off (see
•
14 Install the upper valve box assembly. (See
Upper Valve Box"
Restore the analytical method.
15
Reset the valve EMF counters. See
16
Counter in the Operation Manual.
on page 346.)
To Reset an EMF
19
Maintaining a Valve
4. Column
2. Sample out
step 11).
"To Install the
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