Teledyne 9110T Status LED’s, Relay PCA P/N 045230100 with AC Relay Retainer in Place

Model 9110T NOx Analyzer Principles of Operation

seated in their sockets and prevent accidental contact with those sockets that are not

populated see Figure 13-16).

Never remove this retainer while the instrument is plugged in and turned on. The contacts of the AC relay sockets beneath the shield carry high AC voltages even when no relays are present.

Retainer

Mounting

Screws

AC Relay

Retainer Plate

Figure 13-16: Relay PCA P/N 045230100 with AC Relay Retainer in Place

13.3.4.1. Status LED’s

Eight LED’s are located on the analyzer’s relay PCA to show the current status on the various control functions performed by the relay PCA (see Figure 13-17). They are:

Teledyne Analytical Instruments 346