If your CCPG needs to be cleaned, you can remove the C Clamp (located inside the flange), which will then allow you to remove the ionization chamber. You can then scrub the ion chamber, as long as it isn't heavily damaged. If heavily damaged, you will need a new one. Once clean, re-insert the ionization chamber, replace the C Clamp, and start the gauge. Allow it time to equilibrate.
Category: Instrumentation Gauging
Sub-Category: Wide-Range Combination Gauges