Spectrex 20/20R - Single IR Flame Detector - Manual (Page 56)

Spectrex Inc. - SharpEye TM Single IR Flame Detector Manual – TM 20/20R, Rev. A January2005
48
2. W IRING (R EFER TO F IG . 18.)
1 Disconnect
power.
2 Release the four (4) slotted-head screws (item 3) that secure the chamber
cover (Item 2). The chamber is now revealed.
3 Remove the protective plug mounted on the detector electrical entry, pull the
wires through the detector chamber (Item 7). Use a 3/4"-14NPT or M25x1.5
explosion-proof conduit / cable gland connection to assemble the conduit /
cable to the detector.
4 Connect the wires to the required terminals (Item 4) according to the wiring
diagram. See paragraph 2.1 and figures no. 19 and no. 20.
5 Connect the grounding wire to the ground screw outside the detector cover
(Item 5).
The detector must be well grounded to Earth Ground for proper
operation.
6 Verify the wiring. Improper wiring may damage the detector.
7 Check the wires for secure mechanical connection and press them neatly
against the terminal to prevent them from interfering while closing the cover
(Item 2).
8 Place and secure the cover chamber (Item 2) using four (4) slotted-head
screws (Item 3).