7-8 Operator’s Manual – OPTI CCA-TS2
7 MAINTENANCE
7.4.2 Replacing Gas I/O Port
To change the gas I/O port:
1. Open the SMC cover. Remove the black I/O
port by grasping it with a hemostat or tweezers
and rmly pulling upward (Fig. 7-20). Discard
the old part.
2. Install the new gas I/O port with the rounded
surface pointing up and press it into the recess.
When fully seated, the I/O port is approximately
1/8 inch (3mm) above the surrounding surface.
3. Perform a <Pump Test> (see section 8.2.16)
to ensure correct operation. Make sure the
pump rotates smoothly without excessive noise.
In addition, run one sample in control mode.
Make sure the control measurement passes
without errors.
Fig. 7-20 Gas I/O Port
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