Utility Relay Company AC-PRO-II, Instruction Manual

Page: 47 / 56

AC-PRO-II
®
Instruction Manual www.utilityrelay.com
Page 45
21.1 Checking the Battery Voltage
See Section 6.4.2.
21.2 Battery Replacement
For best performance, replace the battery with the following
3-volt lithium battery:
Panasonic CR2 Industrial Lithium battery 3V
#CR15H270
A replacement battery can be purchased from:
•
Utility Relay Co. Part # T-125
•
Digi-Key Part # P157-ND
www.digikey.com
•
Newark Part #15R3550
www.newark.com
Lithium battery ratings:
•
850 mAh Capacity
Figure 21.1: Battery Door
To replace the battery:
•
The breaker must be out of service and de-energized
for safety.
•
Remove the black wiring cover by pulling the wiring
cover off the three (3) standoff posts.
•
Loosen the single #2-56 x 1/4 screw with a screwdriver.
•
Remove the screw and associated locking washer.
•
Before sliding the battery door forward, place hand
below the battery door, as the battery contact spring
will push the battery out.
•
Slide the battery door forward.
•
Remove the old battery.
•
Check battery markings and insert positive (+) nub end
of the battery into the trip unit first (the positive (+) nub
should be up when trip unit is upright, flat (-) end should
be down).
•
Replace Battery door, washer and screw.
•
If applicable, to reset low battery state, perform manual
battery test using the MORE Menu. See Figure 6.5 for
MORE Menu.
**** IMPORTANT ****
For best performance, replace the battery with the
recommended Panasonic CR2 3-volt lithium battery.
The breaker must be removed from service before
replacing the battery.
The replacement battery must be inserted with the
proper polarity.
For proper contact, the battery door screw must be in
place and hand-tightened.
After replacing battery, Time and Date must be set.
See Section 11.25.
The AC-PRO-II trip unit consists of a main case and a
display case. Refer to Figure 4.3. The trip unit orientation
can be modified by rotating the display case. Refer to the
AC-PRO-II retrofit kit installation manuals for breaker-
specific trip unit orientation options. The AC-PRO-II can be
configured in the three (3) normal orientations listed below.
1. Horizontal (breaker harness connection at right).
All units are shipped in this orientation.
2. Vertical bottom (breaker harness connection at
bottom).
3. Vertical top (breaker harness connection at top).
To rotate the Display Case:
•
The breaker must be out of service and de-energized
for safety.
•
Ensure the person rotating the display is properly
grounded and takes special care to avoid static
discharge onto trip unit and display internal
components.
•
Remove the black wiring cover by pulling the wiring
cover off the three (3) standoff posts.
•
NOTE: the display case is connected to the main case
via the following
o
One (1) Ribbon cable. See Figure 22.2.
o
Four (4) captive screws. See Figure 22.1
•
Loosen the four (4) captive screws with a screwdriver.
•
Leave the ribbon cable connected. Do not disconnect
the ribbon cable.
•
Rotate the display to one of the three options listed at
the beginning of this section. Be careful not to
damage, pinch, or disconnect the ribbon cable.
•
Tighten the four (4) captive screws.
•
Press the “DISPLAY” button and smart buttons to
confirm operation.
•
Refer back to the AC-PRO-II retrofit kit Instructions for
additional breaker specific steps.
Figure 22.1: Display Case Screw locations
21.0 Battery 22.0 Rotating the Display
Display
Case
Screws
Battery
Door