Spectrex 40/40U-UB - UV Flame Detector - Manual (Page 39)

TM 40/40U, Rev (7) July 2013
Connecting the Detector 27
4 Use a ¾" – 14 NPT explosion-proof conduit connection or M25x1.5
flameproof gland to assemble the cable / conduit to the detector.
Figure 7: Detector with Cover Removed
5 Connect the wires to the required terminals on the Terminal Board
according to the wiring diagram (Figure 7) and Table 14.
6 Connect the grounding (earth) wire to the ground (earth) screw outside
the detector (Earth Terminal). The detector must be well grounded to
earth ground.
7 Verify the wiring. Improper wiring may damage the detector.
8 Check the wires for secure mechanical connection and press them neatly
against the terminal to prevent them from interfering while closing the
back cover (Figure 7).
9 Place and secure the detector’s back cover by screwing the three (3)
socket-head-screws in the Cover Bolts (Figure 4).
Earth
Terminal
Terminal
Chamber
Terminals
Internal Earth
Terminal
Detector Holding
Screw
Conduit / Cable
Inlet