Alpha Technologies Node Power Supply User Manual

Page 29

Disconnect all power sources from the SPI (Service Power Inserter) before removing its
cover. Verify that the SPI is disconnected from both the utility power and the power supply
before beginning procedure.

WARNING!

Fig. 2-11, Mounting locations for the standard SPI

SPI Cover

Seizure Screw

Fig. 2-13, Coaxial Cable Connection

Seizure Screw

Stinger

Coaxial

Termination

Output Port

2.6

Connecting the Coaxial Cable, continued

2.6.2 Connecting the Service Power Inserter (SPI)

The standard SPI (Alpha p/n 020-019-31) can be mounted in any of three locations as shown in the
illustrations below. Three knockouts (one at the rear of the enclosure and two on the side) are available
for this version of the SPI allowing greater fl exibility with regard to the installation of the coaxial cable.

Installation Procedure:

1. Use the hammer and punch to remove the 3/4" knockout from either front or rear location on the right

side (as viewed from the front) or the right rear corner of the enclosure.

2. Use a 1" wrench to remove the output port fitting from the SPI.

3. Position the SPI inside the enclosure and fix in place by reattaching the output port fitting to the body

of the SPI. Tighten to 130 in-lbs.

4. Disconnect the SPI from all power sources.

5. If needed, remove the cover, exposing the circuit board and seizure screw assembly.

6. Screw the Coaxial Termination into Output Port at the rear of the SPI, inserting the stinger into the

seizure screw assembly.

7. To prevent arcing and failure of the unit,

ighten seizure screw to 35 in-lbs.

8. Replace cover and reinstall screws.

9. Verify switch on front of SPI is on the ON position.

Installed in front
knockout

Installed in rear
knockout

Installed in right
rear knockout

Fig. 2-12, Cover Removal

031-295-B0-001 Rev.A

2.0 Installation