GAI-Tronics 262-001 Intrinsically-Safe Telephones - Manual (Page 4)

Pub. 42004-173G
Model 262-001 and 272-001 Intrinsically-Safe Telephones Page 4 of 12
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Installing the Model 272-001 Outdoor Telephone
The Model 272-001 Outdoor Telephone is intrinsically safe when connected in accordance with GAI-
Tronics drawing 73242 (Pub. 42004-380).
1. Open the front door of the enclosure and locate the four outermost screws.
2. Loosen these four screws, and carefully pull the enclosure apart until there is a slight resistance on the
left side of the enclosure.
3. Separate the front half of the enclosure from the rear half by pulling on the left side of the enclosure
until the hinge plugs pull loose.
4. Put the front half of the enclosure aside, and mount the enclosure to the wall using four ¼-inch screws
of the appropriate length, depending on the mounting surface.
5. Feed the station wire through the hub at the bottom of the enclosure.
6. Refer to drawing 73242 (Pub. 42004-380) for wiring details. The station wire is the pair of wires
coming directly from the GAI-Tronics Model 263-000 Isolation Barrier Unit. This unit must not be
connected directly to the telephone system.
7. Close the front half of the enclosure, and secure it by tightening the four outermost screws.
WARNING
Substitution of components may impair intrinsic safety.
System Setup
GAI-Tronics recommends taking the following steps to ensure a safe and trouble-free installation:
1. Install the Model 263-000 Isolation Barrier Unit (IBU) and wire it completely, except for the
hazardous area signal wires.
WARNING The unit must be wired in accordance with
drawing 73242 (Pub. 42004-380) to ensure intrinsic safety.
2. Next, temporarily connect the I.S. telephone to the IBU with a short pair of conductors, and operate
the unit by making a test telephone call. If any problems are detected, see the Troubleshooting
section.
3. Call the I.S. telephone from another telephone, and adjust the
RING PITCH
(located on the IBU) to
the desired pitch.
4. Disconnect the I.S. telephone and install it in the intended permanent location.
WARNING
The unit must be wired in accordance with
drawing 73242 (Pub. 42004-380) to ensure intrinsic safety.
5. Make a call from the I.S. telephone. If any problems are detected, see the Troubleshooting section.