GAI-Tronics DEX-201 Manuale - Pagina 6

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Pub.: 42004-679L2D

DEX-10

DEX-20

Page 5 of 13

ODEL

X AND

RILLER

NTERCOM

TATIONS

Mounting

The station consists of two enclosures that

are connected by a union. The mounting

location must be a flat, vertical surface that

provides proper clearance, rigidity and

strength to support the station.

The suggested mounting height for stations is

54 inches (137 cm) up to the center of the

factory-sealed enclosure.

To maintain the explosion-proof integrity of

these stations, they are designed with all

mounting hardware located outside the

enclosures. Refer to Figure 3 for mounting

hole and slot dimensions.

Securely fasten the factory-sealed and

termination enclosures to the mounting

location using steel mounting bolts and

washers, or washer-head bolts (hardware not

included).

Conduit Installation

Install the conduit using an approved

electrical conducting-type lubricant on the

threads. The termination enclosure on the

station has one conduit entry on each side

Figure 3. Rear view showing mounting slots

and two on the bottom of the enclosure.

The UL-approved Driller's Intercom models contain ¾-inch NPT conduit entries. The bottom entries are

plugged from the factory and can be removed to allow use of the entry. Refer to Figure 2 for locations.

All unused conduit openings must be plugged using a close-up plug approved for the specific hazardous

location where the enclosure is used. All conduit connections must meet minimum thread engagements

as specified by the applicable electrical codes.

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