Agilent Technologies 8860 Maintaining page 234

15 Maintaining a Valve
To Replace a Rotary Valve in the Valve Box
11 Use needle-nosed pliers to move the valve rotor index pin of the valve counterclockwise
Valve rotor index pin
Valve stop Off position
12 Plumb the new valve using the existing fittings.
Hazardous sample gases may be present.
WAR N IN G
5. Carrier gas in
1. Sample in
13 Turn on the carrier and sample gases, then check for leaks at the valve fittings.
14 Install the upper valve box assembly. See
15 Perform an inlet Leak & Restriction test and reset the maintenance counters.
234
until the pin touches the valve stop Off position.
• 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
4. Column
2. Sample out
step 11.
"To Install the Upper Valve Box" on page 237.
Maintaining Your GC