Nortel Meridian 1 Option 11C Planning And Installation Manual page 201

Installing and connecting reserve power supplies Page 201 of 408
Procedure 31
NTAK75 Battery Unit installation
1 Unpack the NTAK75 battery unit and place it according to the
equipment layout plan.
• The battery unit must be a installed within 3 ft (915 mm) of the
cabinet it is serving.
• Install to the side or below the Option 11C cabinet; not above.
• If installed below, the minimum clearance from the top of the
NTAK75 to the bottom of the wall mounted Option 11C cabinet
is 2 ft (610 mm).
• The battery unit should be installed in an open, well-ventilated
area.
• The area must meet the following temperature limits:
Maximum allowed range: 0 ° to 45° C (32 to 110°F)
Recommended range: 20 ° to 35° C (68 to 95 °F).
2 Remove its cover.
The cover is secured by two captive screws on the front of the box.
3 Set the switch on the top of the NTAK75 battery box to OFF.
4 Unpack the batteries and check the expiry dates.
If the batteries do not have the same dates, contact your supplier.
The battery cells can deliver high currents when short-circuited. Make
sure that you do not inadvertently short-circuit the terminals of the
batteries.
5 Place the individual batteries into the battery box (see Figure 82
on page 202).
WARNING
Option 11C Planning and Installation Guide