GAI-Tronics 12820-001 Hazardous Area ICS RTU Upgrade Kit - Manual (Page 3)

Pub. 42003-234C
M ODEL 12820-001 H AZARDOUS A REA ICS RTU U PGRADE K IT Page 3 of 3
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Field Wiring
The RTU PCBA provides terminal blocks for field wiring. Attach spade lugs to the wires before
attachment to the terminal blocks for the most secure connection.
OUTPUT 1A and OUTPUT 1B are activated by either the VLC or SmartSeries PCBA. OUTPUT 1B is
fused on the normally open (N. O.) contact with a T1.6 amp fuse.
Attaching the Front Panel
1. After all connections have been completed, inspect and clean the machined flange joint surfaces of
both the cover and the 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.
2. Apply a light coat of Killark “LUBG” lubricant to flange surfaces and close the cover. Install and
tighten all cover bolts to 30 ft-lbs. Make certain no cover bolts are omitted. Use only those bolts
supplied with the enclosure.
3. Reapply power to the station.
Refer to Pub. 42004-723L2 for general information.