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Teledyne API - Model T200H/T200M Operation Manual
7.7. REMOVING / REPLACING THE RELAY PCA FROM THE
INSTRUMENT
07270D DCN7141
22. Power up the analyzer.
23. Verify the basic operation of the analyzer using the ETEST and OTEST features or
zero and span gases, then carry out a hardware calibration of the analyzer
(Section 13) followed by a software calibration.
This is the most commonly used version of the Relay PCA. It includes a bank of solid
state AC relays. This version is installed in analyzers where components such as AC
powered heaters must be turned ON & OFF. A retainer plate is installed over the relay
to keep them securely seated in their sockets.
Figure 7-20:
Relay PCA with AC Relay Retainer In Place
The Relay retainer plate installed on the relay PCA covers the lower right mounting
screw of the relay PCA. Therefore, when removing the relay PCA, the retainer plate
must be removed first.
Figure 7-21:
Relay PCA Mounting Screw Locations
Troubleshooting & Service
261
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