Principles of Operation Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual
230
Power
Connection
for DC
Heaters
Status LED’s
(D2 through D16)
DC Power Supply
Test Points
Watchdog
Status LED (D1)
(JP5)
Thermocouple
Configuration
Jumpers
Thermocouple
Signal Output
I2C
Connector
V
alve Control
Drivers
Pump Power
Output
(JP7)
Pump AC
Configuration
Jumper
AC Power
IN
DC Power
Distribution
Connectors
V
alve Control
Connector
(J2)
Connector for
AC Relays
K4 & K5
(J18)
Connector for AC Relays K4 & K5
Heater AC Power
Configuration
Jumpers
JP2
JP6
Figure 12-10: Relay PCA Layout (PN 04135)
CAUTION ELECTRICAL SHOCK HAZARD
Only those relays actually required by the configuration of the T802 are populated.
A protective retainer plate is installed over the AC power relays to keep them securely
seated in their sockets and prevent accidental contact with those sockets that are not
populated see Figure 12-11).
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.
07275B DCN6418