GAI-Tronics 785-002 24 V DC Explosion-proof Page/Party Handset Stations - Manual

Pub. 42004-157E
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374  800-492-1212  Fax: 610-796-5954
V ISIT WWW . GAI - TRONICS . COM FOR PRODUCT LITERATURE AND MANUALS
G A I - T R O N I C S ® C O R P O R A T I O N
A H U B B E L L C O M P A N Y
Model 780-002, 785-002, 7805-002,
and 7855-002 24 V DC
Explosion-proof Handset Stations
Confidentiality Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics.
GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,
and such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.
General Information
GAI-Tronics hazardous area Page/Party ® 24 V dc handset/speaker stations are designed to provide safe
and clear communications even in high-noise areas. These models are NRTL certified for use in the US
and Canada for the following areas: Class I, Div. 1, Groups C and D; Class II, Div. 1, Groups E, F, and
G; and Class III, Div. 1.
Each of these models include a front-panel push button for paging, a durable 6-foot PVC coil cord, a
noise-canceling microphone for reduced transmission of background noise, and sidetone circuitry to
reduce amplification of the user’s voice into their earpiece. An electrical safety barrier mounted inside
the housing creates an intrinsically-safe handset. Multi-party stations include a durable rotary switch for
party line selection. The following models are covered by this instruction manual:
Model Description
780-002 Explosion-proof Handset Station, indoor, 24 V dc, single party
7805-002 Explosion-proof Handset Station, indoor, 24 V dc, multi-party
785-002 Explosion-proof Handset Station, weatherproof, 24 V dc, single party
7855-002 Explosion-proof Handset Station, weatherproof, 24 V dc, multi-party
This installation manual provides instructions on both the placement and mounting of the stations. Refer
to Pub. 42004-182, which shows the conduit installation and station wiring details necessary to maintain
the explosion-proof integrity of the stations.
WARNING
Explosion Hazard – Do not connect or disconnect equipment unless power
has been switched off or the area is known to be non-hazardous.