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Changing an auxiliary channel frit
1.
Locate the gang fitting block. It connects the three gas outlet tubes for
the auxiliary channels to the pneumatics module.
2.
Remove the screw that holds the block to the pneumatics module. Pull
the block free of the module and rotate it so that the frits are on top.
Aux 4
Aux 5
3.
Pull the frit to be changed out of the block. Also remove the O-ring that
seals it.
4.
Place an O-ring on the new frit. Place the O-ring/frit combination in the
block.
5.
Reconnect the block to the pneumatics module. Tighten the screw
firmly.
Installing an Auxiliary Pressure Control Module
Gang fitting block
Gas restrictors (frits)
Aux 3
Aux 4
Aux 5
Install the new module
Aux 3
Gas outlets
11
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