Detcon FP-624D-HT - Manual (Page 38)

Model FP-624D-HT
FP-624D-HT Instruction Manual Rev. 1.1 Page 34 of 44
Replacement of the Connector PCB
NOTE: It is necessary to remove power to the junction box while changing the connector PCB
in order to maintain area classification.
a) Remove the junction box cover and remove the transmitter module from the connector PCB.
b) Remove the red green and blue wires coming from the High Temperature combustible gas sensor from the
connector PCB.
c) Remove the output wiring from the connector PCB terminals.
d) Remove the two 6-32 screws holding the connector PCB to the base of the junction box, and remove the
connector PCB.
e) Install the new connector PCB using the two 6-32 screws removed in step d).
f) Re-connect the output wiring to the terminals on the connector PCB.
g) Reconnect the red, green and blue wires from the High Temperature sensor to the connector PCB according
to wiring diagram for remote sensor (Figure 11).
h) Reinstall the transmitter module, and the junction box cover.