Avaya EA401 Installation And Operation Manual - Page 5
Browse online or download pdf Installation And Operation Manual for Telephone Avaya EA401. Avaya EA401 20 pages. Avaya explosive atmosphere telephone installation & operation manual
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In no case should this telephone apparatus or wiring be installed in a location where
acetylene may be present in the atmosphere.
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Two back cover retaining bolts on the model EA401 are factory sealed. Damage to the
seals voids the warranty and safety approvals, and may compromise unit safety.
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It is the responsibility of the installer to advise a supervisor if any telephone equipment or
wiring in a hazardous location may not comply with regulations and standards applicable to
that location.
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Avoid creating a spark by striking tools or metal objects together, against concrete, stone, or
any similar substance.
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Test equipment capable of producing an electric spark must not be used in an explosive
atmosphere.
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All apparatus should be completely assembled and properly sealed before reconnecting
power.
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A EA401 telephone should only be installed with proper authorization. It is necessary for
the customer and the telephone company to have a definite agreement regarding the
location of the telephone unit, auxiliary apparatus, and protector (i.e. lightning arrestor at the
demarcation block).
NOTE:
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To maintain maximum protection, broken or worn parts must be replaced immediately. Any
abnormal conditions should be immediately corrected. Periodic inspections are
recommended.
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Unless otherwise specified, the customer must provide and install explosion-proof conduit
and fittings approved by the Canadian Standards Association (CSA) or listed by
Underwriters Laboratories (UL). The customer is also responsible for having the system
inspected and approved by the appropriate electrical inspector in accordance with local
legal requirements and National Electrical Code Standards.
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EA401 telephone sets and associated external bells and control relays are designed to
provide security against ignition of the surrounding atmosphere. All parts of the apparatus
which might produce an electrical spark are completely enclosed. All passages to the
outside are made such that any spark or flame will be cooled to a temperature below the
ignition threshold before reaching the outside atmosphere.
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If the handset or cord is damaged, it must be replaced with part EA10H handset assembly.
Handsets and cords are not covered under warranty other than to be free of defects at time
of installation.
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If the telephone is found to be defective or in need of repair, it must be returned to the
manufacturer. No field repair is possible other than replacement of the handset and fuse.
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Telephones in good condition may be moved from one location to another.
Warnings
General Requirements
Page 5
Installation and Operation
Model EA401