To Align A Rotary Valve Rotor - Agilent Technologies 7820A Manual

15
Maintaining a Valve

To Align a Rotary Valve Rotor

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Gather the following:
1
• Flathead screwdriver
• 3-mm hex key wrench
• T-20 Torx screwdriver
Set the oven and valve box heated zones to a safe handling
2
temperature (25 °C).
Set all valves to Off.
3
The oven, inlet, detector, and valve box may be very hot. If they are
hot, wear heat-resistant gloves to protect your hands.
Loosen the adjustment set screw.
4
Locate the rotor adjustment shaft on top of the actuator.
5
Using a flathead screwdriver, rotate the valve rotor
counterclockwise until it stops, then back it off a small
amount to set one end of the rotor's motion (< 1 mm).
Tighten the adjustment set screw.
6
Turn the valve On, turn Off to check for smooth operation.
7
Restore the analytical method.
8
Rotor adjustment
slotted shaft
Adjustment set screw
Maintaining Your GC