GAI-Tronics 400-003 IEC / ATEX Zone 1 RigCom Station - Manual (Page 14)

Pub. 42004-460A
Model 400-003 IEC/ATEX Zone 1 RigCom Station Page: 14 of 16
f:\standard ioms - current release\42004 instr. manuals\42004-460a.doc
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Maintenance
CAUTION
These servicing instructions are for use by qualified service personnel only.
To reduce risk of electric shock, do not perform any servicing other than that contained in the
operating section unless you are qualified to do so.
Regular inspection and a good preventive maintenance program will increase the reliability of your
GAI-Tronics station. The GAI-Tronics Field Service Department can formulate a service contract suited
to your facility’s specific need for preventive maintenance.
WARNING
Before performing any of the following preventive maintenance steps, remove
all power from the station.
CAUTION
To reduce the risk of ignition of hazardous atmospheres, disconnect the equipment from the supply
circuit before making any adjustments to the PCBA’s settings.
F1/F2 Fuses
WARNING
Do not remove fuses when energized. Replace with the same type
and size fuse for continued safe operation.
F1 is the fuse on the ac power line: 0.5 A, slow-blow type, 250 V, 5 20 mm, UL; or T400 mA, 250 V,
5 20 mm, IEC 60127-2/3.
F2 is the fuse on the dc power line: 2.0 A, slow-blow type, 250 V, 5 20 mm, UL; or T1.6 A, 250 V,
5  20 mm, IEC 60127-2/3.
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.
Install and tighten all cover bolts to 17 ft-lbs. (23 N-m). Make certain no cover bolts are omitted. Use
only those bolts supplied with the enclosure.
Troubleshooting
Problem Solution
Problem with station
performance Review installation, ensuring that you correctly followed all
steps. Check all terminations on the board.
Speaker volume too low. Adjust volume control.
Replace speaker.
Crosstalk One or more system cable pairs may be improperly terminated.
Visually inspect the system cable for accidental crossing of
cable pairs or grounds.