Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 46)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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5.6.2 Harness Connection (Figure 13)
1. Remove the four Threaded Plugs (13) from detector front.
2. Release the four Socket-Head Screws (14) that secure the detector
housing (1) to its back cover (2) using No. 5 Hex Key for M6 screw. Hold
the housing during the removal of the screws. Pull the detector housing
from its cover. The cover remains attached to the detector swivel mount.
The housing slides under the cover and remains attached to it by a
securing cable (8). Do not let cover simply drop but rather support it until it
hangs.
The terminal board (12) inside the detector cover is now revealed.
3. Remove the protective plug (6) mounted on the detector conduit inlet. Pull
the wires through the detector cover (2) and secure them firmly to the
cover using the cable-tie (16) attached to it. Use a 3/4”-14NPT or M25 x
1.5P explosion -proof conduit/electrical entry connection to assemble the
conduit/cable to the detector.
4. Connect the wires to the required terminals (12) according to the wiring
diagram. See Appendix B.
5. Connect a Grounding Cable to the Ground Terminal (7) outside the
detector cover (2). 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 Board (12) to prevent them from interfering while
closing the detector’s housing.
8. Dress all wires so they will not interfere with the closure of the unit.
9. Seal the conduit inlet and outlet.
10. Align the two connectors guide pins in the Housing section with the correct
openings in the housing section.
11. Carefully slide the Housing section onto the floating holes in the Female D
Connector.
12. Using the long handled Hex key, tighten the four M6 1.0PX50 screws (14).
13. Insert the four Threaded Plugs (13).