Comdial Dxp Plus Instructions Manual

2.0 Understanding System Grounding Requirements
Transient voltage spikes, if induced onto CO or CENTREX lines, can travel through the cable and into the
common equipment. The telephone company offers basic protection against this condition but it is usually
designed to protect the central office circuits. While it will also provide some protection to the common
equipment, you should not rely upon it for total protection. To help ensure that external over-voltage surges do not
damage the system, you...

PLUS073
Grounding Terminal Two Grounding TerminalsGrounding Terminal
Grounding Terminal
Typical Earth Ground
No. 6 Solid Copper
Wire To Earth Ground
From Main Cabinet
No. 10 or 12 Solid Copper
Wire Between Cabinets
Grounding The System
Installing The Switchable Battery Back Up Assembly IMI89–197
Installing The Battery Back Up Assembly – 3 

3.0 Matching The Source Voltage
The factory ships the switchable battery back up charger assembly set for 230 VAC operation. If you plan to
operate the charger from a 120 VAC source, you must set the voltage selection switch for that input. The switch is
located at the lower left edge of the charger chassis. Slide the switch actuator to the setting that matches the AC
source voltage available at the installation site.
Voltage Select Switch
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Matching The Source Voltage
IMI89–197 Installing The...

4.0 Installing The AC Power Plug
The charger assembly’s line cord is terminated with a typical continental European plug matching the CEE 7/7
standard. If this plug does not meet the site needs, you can install a plug of the proper type for your installation.
To install a line cord plug,
·familiarize yourself with the requirements for the plug that you plan to install on the unterminated line cord (the
illustration shows a typical continental European plug matching the CEE 7 standard),
·strip off the...

2.0 Mounting The Charger Chassis
You must mount the charger chassis to the battery cabinet; however, the particular position that you chose for this
mounting depends upon the method that you plan to mount the cabinet at the DXPPlussite.
·If you plan to mount the battery cabinet on a backboard at the side of the common equipment cabinets, you
must attach the charger, with its cables pointing toward you, to the left end of the battery cabinet as you face the
cabinet’s battery opening.
·If you plan to mount...

Charger Chasis
Wiring Access Plate
Battery Cabinet
Screws (3 Places)
bb480j
Mounting the Charger For Double Rack Installations
bb480L
Screws (3 Places)
Charger Chasis
Wiring Access Plate
Battery Cabinet
Mounting The Charger For Below Main Cabinet Installations
Installing The Switchable Battery Back Up Assembly IMI89–197
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3.0 Mounting The Battery Cabinet.
CAUTION
The complete battery back up assembly is heavy. The charger chassis, empty battery cabinet, and wiring
weigh approximately 25 pounds and all the batteries together weigh approximately 130 pounds for a
combined assembly hanging weight of approximately 155 pounds.
You can mount the battery cabinet at several different locations.
·You can mount the battery cabinet on a separate backboard located to the right of the common equipment
cabinet location. Locate the...

Mounting The Battery Cabinet
BB480a
Installing The Switchable Battery Back Up Assembly IMI89–197
Installing The Battery Back Up Assembly – 9 

3.0 Assembling and Wiring The Batteries In The Cabinet
3.1 Installing The Batteries
Install the batteries in the cabinet with their terminals facing the cabinet opening. The batteries set in place, and
you do not need to anchor them to the cabinet.
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Installing The Batteries
IMI89–197 Installing The Switchable Battery Back Up Assembly
10 – Installing The Battery Back Up Assembly 

3.2 Strapping The Batteries
You must strap the batteries together using the supplied strapping bars and hardware. Use three strapping bars at
each strapping location, and install the hardware as shown in the illustration.
# 10-32 Machine Screw
#10 Flat Washer
Battery Straps
Battery Terminal
#10 Flat Washer
#10 Lockwasher
#10 Hex Nut
bb480h
Attaching The Strapping Hardware
BB480c
Strapping The Batteries
Installing The Switchable Battery Back Up Assembly IMI89–197
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