GAI-Tronics 780-001 User Manual

Pub. 42004-156D

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model 780-001, 785- 001, 7805-001, and

7855-001 Explosion-proof Handset Stations

Confidentiality Notice

This manual is pr ovided s olely as a n op erat ional, installation, and maintenance guide and contains sens itive
bus ines s and t echnic al infor ma tion tha t is confident ial and prop rieta ry to GAI - Tr onic s. GAI- Tr onic s retains
all intellectual prop erty a nd other r ights in or to the information contained herein, and s uch infor ma tion may
only be used in connection with t he op erat ion of your GAI-T ronics produ c t or s ystem. This manu al may not
be disclos ed in any form, in whole or in pa rt, direct ly or indirectly, t o any third party.

General Information

GAI-Tronics hazardous a rea Page/Party® handset stations are desi gned t o provide safe and clear
communicat ions in hazardou s areas, even in high-noise sit u ations . Thes e models are NR TL certified for
use in t he US and C anada for the following areas : Class I, Div. 1, Group s C and D; Clas s II, Div. 1 ,
Groups E, F, and G; and Class III, Div. 1.

Eac h of these models includes a fr ont-panel push button for paging, a 6-f oot PVC c oil c ord, a noise­canceling microphone for reduc ed t ransmission of background nois e, and s idetone circuitry to r edu c e
amplification of the user ’ s voice and b ackgr ou nd noise into their earpiece. An electrical safet y barrier
mounted inside the hou sing creates an intr insically- safe handset. Mult i-party s tat ions include a dura ble
rotary switch for pa rty line select ion. The wea therproof stat ions include a nonmetallic hous i ng with a front
door. This ins tallation manu al covers the following models:

Model Description

780-001 Explosion-proof Handset Station, indoor, 120 V ac, single party
7805-001 Explosion-proof Handset Station, indoor, 120 V ac, multi-party
785-001 Explosion-proof Handset Station, weatherproof, 120 V ac, single party
7855-001 Explosion-proof Handset Station, weatherproof, 120 V ac, multi-party

This manual provides instructions for station placement and mounting. Refer to Pub. 42004-184, 42004­238, or 42004-239, as applicable, for information detailing how to maint ain the exp losion-proof integr ity of
the stations . The appropr iate pu blication is packed with eac h station.

WARNING

been switched off or the area is known to be non-hazardous.

Explosion Hazard – Do not connect or disconnect equipment unless power has

GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA

610-777-1374  800-492-1212  Fax : [phone]

ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS

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Installation

Whether insta lling an entir e s ystem or only an add-on s tation, cons ult t he s ystem layout diagrams at the end
of this manual. T hese f igures, used in conjunction wit h the station installation information and the ca ble
layout guide, s hould pr ovide all the information necessary to install the Page/P arty
do not show an explos ion- proof sta tion; however, the basic p oints of t he s ystem layou t and design still
apply.

®

stations. T hes e fi gu res

NOTE

separate power feed, the Page/Party

A separate power feed is recommended for Page/Party® stations in Div.1 areas. With a

®

stations c an be shut off for maintenance wit hout disrup ting the power

supply to the other equipment in the Div. 1 area.

Enclos ure Placement

All GAI-Tronics Pa ge/ Party® units are wired in parallel. G ood system layout design minimizes the cable
required for ea ch insta llation. GAI-Tronics multi-condu c tor cable, des igned especially for this applic ation,
is recommended. The number, size, and color-coding of condu c tors are lis ted in the acc ompanying sys tem
connection diagra ms .

®

System layout and power c able length are importa nt consider ations when ins talling Page/Party

equipment.
The r ules vary for different systems, but generally, the total power cable length should not exceed one mile
(5280 feet) for 115 V ac systems. The length of cable between the stations is not a factor; the total cable
length is the most import ant cons iderat ion.

Mounting

To maintain t he explosion-p roof integrity of these stations , all mounting hardwar e is located outside the
aluminum enclosure. The suggested mounting height for all station enclosures is 54 inches (137 mm) up to
the c en ter l i n e o f the en closur e.

Indoor Station: Mount the indoor unit using the two mounting s traps on the rear of t he enclos ure. Refer t o

3

Figu re 1. Use the standard

/8-inch bolts to secure the enclosure to the mounting surface. Secure the two
bott om b olts first, then the t op bolts. The mounting stra p design allows the stat ion to be removed from it s
mounting surface by removing only two of the bolt s.

Outdoor Station: The out door model stations are shipped with a sepa rate glass-reinforced polyester
enclosure with a f ront door. This enclos ure ha s four 0.44-inch diameter mount ing feet in the 4 corners and
is su itable f or mounting t o ma ny types of s urfaces. Refer to Figure 2.

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Figure 1. Mounting details for indoor sta tions

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Figure 2. Mounting details for outdoor sta tions (multi-part y sta tion shown)

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