GAI-Tronics 478-002 Centra-Page Desktop Subset - Manual (Page 3)

Pub. 42004-120C
Model 478-002 Centra-Page Desktop Subset Page: 3 of 5
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07/04
Installation in Centra-Page Systems
1. Remove the two screws on the back and the two screws on the bottom of the subset.
2. Hinge the housing forward, being careful of the harness still interconnected. This provides access to
the termination blocks on the PCBA (mounted on the subset base assembly as shown in Figure 2).
3. Field wiring cable is user-supplied. Wiring should consist of three twisted and individually shielded
pairs of No. 18 AWG (white and black, brown and yellow, and red and blue when using GAI-Tronics
Model 60051-001 wire).
4. Spade lug the wires, and connect them to the 6-point terminal block.
5. Included in an envelope is a strain-relief bushing. Using a pair of pliers, fit the bushing around the
cable and into the cable entrance on the subset. The bushing will protect the cable entrance.
6. Feed the cable into the conduit that runs to the central cabinet.
7. The terminal blocks for each station (one station per terminal block) are on the chassis that is mounted
on the back of the card rack. These blocks are labeled like the blocks in the desktop station. Make
sure that the wire colors for each lug match the one in the station.
8. Spade lug the wires, and secure them at the central cabinet. Close the central cabinet door.
Figure 2. Subset Wiring for Centra-Page