270 Pneumatics Control Module
Replacement procedures
4 of 10
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Figure 270-2 Removing the PCM
9. Install the replacement PCM. Remember to fold the module ribbon cable
and reconnect the ribbon cable from the front inlet, if applicable.
10. Reinstall the pneumatics block gang fitting onto the flow module.
11. Calibrate the interface as described in Calibrating the PCM interface
below.
Replacing the PCM gang weldment
1. Turn off the oven and inlet and allow them to cool.
WARNING Turn off the oven and the inlet and allow them to cool. Turn off all flows at
the initial gas supply. Then turn off the main power switch and unplug the
power cord.
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