Upgrading An Rpi-8 To An Rpi-16 - Northern Telecom Meridian 1 Installation And Maintenance Manual

Page 32 of 220 Installing the hardware

Upgrading an RPI-8 to an RPI-16

553-3601-200 Standard 7.00 November 1998
Only distributors and authorized service personnel are permitted
to upgrade an RPI-8.
The RPI-8 BIX UL, which has only one power supply unit, has grounding
straps and plates fitted so it can be upgraded to an RPI-16 BIX UL (see Figure
9 on page 22).
1. Power down the RPI.
2. Unscrew the grounding straps and plates.
3. Add the second power supply unit and screw down the grounding straps,
the grounding plates and the power supply unit.
4. Plug the output of the power supply unit into the connector board.
5. Connect the jumper lead from PSU 1 to the lead from PSU 2.
6. Power up the RPI.
Note: The dc power supply passes through the clip and strain relief support,
as shown in Figure 9 on page 22, before connecting to the terminal
block by 16 AWG wire.
The RPI unit should have the dc backup power supplied by
a UL listed UPS.
The UPS should have an output voltage rating of 44 to 50 V dc,
with a maximum fault current limit of 6 A to protect the RPI's
output wiring. Otherwise, it may be necessary to use class 1
wiring.
ATTENTION!
ATTENTION!