Valco electronic Valve Oven - Manual (Page 32)

Chapter 2
Valve Installation
Configuring Valves
32 Operating Manual
Configuring Valves
The valves in the Valve Oven are gas-actuated. The valves are controlled by
solenoid valves that are turned on and off by timed events. Each solenoid valve
uses one timed event. Valve 1 will use timed event # 8, Valve 2 will use timed
event # 7, and so on. Once a valve occupies a timed event, this timed event is
removed from the list of external events that can be added to a run table.
You can configure a valve to be a gas sampling valve or a switching valve.
Gas Sampling Valves
Gas sampling valves have two positions—Load and Inject. These correspond to
the OFF and ON positions, respectively. Gas sampling valves are plumbed so that
counter-clockwise position is Load and the clockwise position is Inject
Figure 2-7. Mechanical Stop Positions for Gas Valves
Switching Valves
Switching valves have two positions—On and Off. Switching valves are plumbed
so that the counter-clockwise position is Off and the clockwise position is On.
NOTE Typically, the valve nearest to the rear of the Valve Oven will be configured as valve 1.
1. Press CONFIG on the TRACE GC Ultra keypad.
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Mechanical stop
Load (OFF) Position Inject (ON) Position