DETECTOR INSTALLATION (continued)
Testing Operating Voltages and Compensating For Conduit Wire Voltage Drops . (continued)
To expose sensor element of detector 800-086 (Figure 2-19): Loosen four screws holding skirt and
flashback cover assembly to housing. Remove skirt and withdraw flashback cover from housing.
Remove four slotted nuts holding element socket assembly to flashback cover assembly and
withdraw flashback cover assembly from socket assembly to expose sensor.
Prior to May, 1973, 0005-5007 O-rings were not installed in detectors 0023-4012 and 0023-
4017. Order and install the specified O-ring as shown in Figure 2-20 or 2-22 if disassembly reveals that
this sealing device is absent.
To expose sensor element of Detector #0023-4012 (Figure 2-20):
Loosen set screw used to secure shield assembly to detector body. Unscrew shield assembly to
remove from body and expose sensor element.
To expose sensor element of Detector #0023-4014 (Figure 2-21):
Disconnect detector from conduit coupling fitting. Loosen plate assembly thumbscrew and
remove detector from plate assembly. Unscrew and remove hub assembly from body assembly
to expose sensor element.
To expose sensor element of Detector #0023-4017 (Figure 2-22):
(1) Break tubing connections at union fittings
(2) Loosen setscrew used to secure aluminum weatherguard housing from body to expose sensor
To expose element of Detector #0023-7317 (Figure 2-23):
Remove four hex nuts holding high-humidity shield assembly to housing and remove shield and
gasket from flashback cover to housing and remove flashback cover to expose sensor element.
Remove sensor element from socket (all detector models) and plug in Test Socket Adapter #0034-4027.
Plug sensor element into adapter socket (Figure 2-24). Turn on power.