Manual Version e1-4.3.0.ae-R3. Page
inserted far enough to hold the plug in place. The excess of the plug can be trimmed using wire cutters
as shown in Figure 45, leaving approx. 1-2 mm exposed so that the plug can be easily removed.
Figure 44. Plug insertion with pliers.
Figure 45. Cut off excess teflon.
6.12 Gas Box Heater
A small heater is supplied with the system to slightly elevate the temperature of the gas box (see Figure
46). The primary purpose of this heater is to maintain the gas box at a warm temperature (25-30 deg
C). The need for heating is most critical for very cold facilities since the sublimation pressure of xenon
difluoride is very temperature sensitive and low temperatures will reduce the maximum xenon difluoride
pressure. The heater is a Positive Temperature Coefficient heater (PTC) which means that as it gets
warmer, its heat output falls which prevents the gas box from overheating. If it is desired to disconnect
the heater, it can be disconnected at the connector shown in Figure 47.
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