Pub. 42004-376A
Model 400-001 and 400-002NS RigCom Stations
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d:\standard ioms - current release\42004 instr. manuals\42004-376a.doc
06/06
Speaker Horn Assembly (Model 400-001 Only)
After unpacking the unit, locate the speaker horn and the driver unit. The speaker horn assembly must be
put together prior to installation.
Place the speaker bell over the driver bushing. Position two large diameter fiber washers with the large
diameter steel washer sandwiched between them on the speaker bushing. Place the small diameter rubber
washer into the speaker horn tip, followed by the small diameter fiber washer. Screw the speaker horn tip
to the driver bushing until it is snug.
Installation
These enclosures must be installed by trained, qualified and competent personnel. Installation must
comply with state and national regulations, as well as safety practices for this type of equipment.
Model 400-001 and 400-002NS must be installed in accordance with GAI-Tronics Pub. 42004-381,
Control Drawing # 73214.
CAUTION
Do not install this equipment in hazardous areas other than those indicated
on the approval listing in the Specifications section of this manual. Such installation may cause a
safety hazard and consequent injury or property damage.
The mounting location must be flat and provide proper clearance, rigidity and strength to support the
enclosure and all contained devices.
Securely fasten the enclosure to the mounting location, using (customer-supplied) 7/16-inch diameter
steel mounting bolts and washers, or washer head bolts.
WARNING
Insure proper grounding to protective earthing.
Do not disconnect equipment while energized.
Inspect and clean the machined flange flame joint surfaces of both the cover and box. Surfaces must be
smooth, free of nicks, scratches, dirt or any foreign particle build-up that would prevent a proper seal.
Surfaces must seat fully against each other to provide a proper explosion-proof joint. Clean surfaces by
wiping with a clean lint-free cloth.
Make certain no cover bolts are omitted. Use only those bolts supplied with the enclosure. Recommended
torque setting of cover bolts = 17 ft-lbs, (23 N-m)
