270 Maintaining Your GC
14 Maintaining the PCM
Installing or Replacing Frits in the PCM
To install or replace a frit:
1 Gather the following:
• O-rings, package of 12, 5180-4181
• Restrictor
• Tweezers
2 Turn off the gas supply to the channel.
3 Select the appropriate frit. For information on selecting PCM
channel frits, refer to the Advanced User Guide.
4 Remove the screw holding the tubing block with the output
tubing.
5 Remove the tubing block. Remove the frit and O-ring using
the tweezers. Be careful to avoid scratching the metal
surfaces.
6 Remove the other O-ring as well. Replace it with a new
O-ring.
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