Valve Control; Figure 9-4. Relay Pca Location - Teledyne T750 User Manual

Valve Control

The power distribution board/Relay PCA also hosts two valve driver chips, each of which
can drive up four valves. The board controls all the valves related to source gas and diluent
gas flow. It also controls those associated with the O3 generator and photometer options.
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Figure 9-4. Relay PCA Location

WARNING – ELECTRICAL SHOCK HAZARD
Never remove the AC Cage, which is a safety shield, 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.
083730750B DCN8606