Installation 3
Procedure
Agilent Gas Sample Selector for 8860 and 8890 Safety and Installation Manual 49
6 Connect the actuator air supply to the Air/N
2
fitting on the back of the Selector.
Set the supply pressure to 380 kPa (55 psi).
7 If not already connected, connect the GC sampling valve output/vent to the
laboratory exhaust system or fume hood. Handle sample gas exhaust in
accordance with all laboratory and local safety guidelines.
When routing the tubing, avoid sharp bends or obstructions. The exhaust tubing
must be able to vent to atmospheric pressure without clogging or
backpressure. Backpressure in the vent line can unbalance the sampling
system and affect repeatability.
CAUTION
Do not use liquid leak detection fluid on the vent line or allow liquid to enter the
vent line. Liquid and condensation in the vent line can cause backpressure and
can be pulled into the Selector and damage the instrument.
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