Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 71)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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Appendix D - Mounting the “EExde approved”
version
The EExde approved version provides an additional EExe terminal box attached
below the EExd detector and therefore allows easier access in hazardous areas
(see fig. 25). The unit is prewired to the terminals in the additional EExe terminal
section ready for field wiring connections
1. Detector/Source Mounting
The detector should be mounted by one of the following options:
a. Swivel mount refers to paragraph 5.4.1.
b. Tilt mount refers to paragraph 5.4.3.
c. Duct mount refers to paragraph 5.5.
1.1
Installation
All the installation instructions are the same as defined in Paragraph 5.4.1, 5.4.3
and 5.5.
a. On swivel mount option there are two options of detector/source install on the
swivel mount.
You can use the thread on the de cover marked either Triangle Symbol or
a Square Symbol (Figure 25).
b. On tilt mount option you must use the Triangle Symbol.
c. On duct mount the detector is installed from the front of the detector.
2. W
IRING (R EFER TO F IG . 25.)
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 conduit inlet, pull the
wires through the detector chamber (Item 7). Use M25x1.5 explosion-proof
conduit connection to assemble the conduit 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. 26 and no. 27.
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).