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Troubleshooting & Repair Teledyne API - Model 200EH/EM Operation Manual
274
11.7. REMOVING / REPLACING THE RELAY PCA FROM THE
INSTRUMENT
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.
AC Relay
Retainer Plate
Retainer
Mounting
Screws
Figure 11-23: 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.
A
C Relay Retain Occludes
Mounting Screw on
P/N 045230200
Mounting
Screws
Figure 11-24: Relay PCA Mounting Screw Locations
04521C (DCN5731)