Agilent Technologies 7820A Manual page 281

WA RN IN G
Maintaining Your GC
Valve rotor index pin
Valve stop Off position
12 Plumb the new valve using the existing fittings.
Hazardous sample gases may be present.
5. Carrier gas in
1. Sample in
Turn on the carrier and sample gases, then check for leaks at
13
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
Install the upper valve box assembly. (See
14
Upper Valve Box" on page 284.)
Restore the analytical method.
15
Reset the valve EMF counters. See
16
in the Operation Manual.
Maintaining a Valve
4. Column
2. Sample out
step 11).
"To Install the
To Reset an EMF Counter
15
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