Filter
Top Products
T400 Ozone Analyzer Operator’s Manual Theory of Operation
289
The most commonly used version of the Relay PCA installed in the T400 analyzer does
not include the AC relays used in instruments where there are AC powered components
requiring control. A plastic insulating safety shield covers the empty AC Relay sockets.
WARNING – Electrical Shock Hazard
NEVER REMOVE THIS 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
AC Relay
Safety Shield
Figure 13-8: Relay PCA P/N 045230100 with Safety Shield In Place
On instruments where the optional Metal Wool Scrubber is installed, the relay PCA
includes a solid state AC relay (see Figure 13-7). A retainer plate is installed over the
relay to
keep them securely seated in their sockets.
AC Relay
Retainer Plate
Retainer
Mounting
Screws
Figure 13-9: Relay PCA P/N 045230200 with AC Relay Retainer in Place
06870C DCN6332