GAI-Tronics 670-002 24 V DC Explosion-proof Page/Party Speaker Station - Manual (Page 4)

Pub. 42004-162E
Model 670-002 24 V DC Explosion-proof Speaker Station Page 4 of 9
f:\standard ioms - current release\42004 instr. manuals\42004-162e.doc
08/13
Mounting
Refer to Pub. 42004-183, which is shipped with this unit. The suggested mounting height for all station
enclosures is 54 inches (137 cm) up to the centerline of the enclosure.
To maintain the explosion-proof integrity of these stations, all mounting hardware is located outside the
enclosure. The unit should be mounted using the two mounting straps that extend past the four corners of
the enclosure. See Figure 1.
Use the standard 3 /
8
-inch bolts to secure the enclosure to the mounting surface. Secure the bottom two
bolts first, then the top bolts. The mounting strap design allows the station to be removed from its
mounting surface by removing only two of the bolts.
NOTE
If this unit is to be used outdoors, it should be mounted inside a Model 10444-003
Weatherproof Non-metallic Enclosure, which is equipped with a front door. This enclosure has four
mounting feet in the four corners and is suitable for mounting to many surfaces.
Conduit Installation
Refer to Pub. 42004-183, which is shipped with this unit. This publication details how to maintain the
explosion-proof integrity of the station.
NOTE
External conduits in areas with Class I, Group C and D areas must have gas seals
not more than 18 inches (457 mm) from the station enclosure. External conduits in Class II and
Class III areas must have seals if the conduit system is not dust-tight.
Wiring
After the station has been mounted, use a 7/16-inch wrench to open the front panel of the station to access
the Termination PCBA. Refer to Pub. 42004-183 for wiring details.
Feed the wiring through the conduit and into the enclosure. Follow the wire colors carefully—these
colors correspond to GAI-Tronics 60029 or 60038 Series cable. The wires must be spade-lugged and
connected carefully and completely to the terminal block. An improper termination may result in
diminished station performance.
Before closing the station, plug the power interconnect cable from the front of the enclosure into the
connector on the power supply card in the rear enclosure.
NOTE
All the bolts must be installed to maintain the integrity of the explosion-proof
construction.