User's Manual

Replacing the MIU Battery (Wall and Pit)
R450 Wall and Pit MIU User’s Manual 11
Cutting and Splicing the Battery Wires
1 As close to the battery casing as possible, cut the battery
connection wires one at a time. See
Figure 11.
2 Insert battery wire left in MIU ensuring insulation has not
been compromised.
Figure 11 Cutting the Battery Connection
3 Use Scotchlok to splice the wires from the new battery
casing to the wires that were connected to the old battery
casing. See
Figure 12.
Figure 12 Splicing the New Battery
4 Be sure to carefully position wires and Scotchloks into
compartment in space available next to battery as shown
in
Figure 13, making sure the wires are not pinched when
the battery is snapped into the MIU housing.
Figure 13 Location of Toroid
Cutting the battery connection wires one at a time
prevents shorting.
Ensure the R450 MIU’s black wire is connected to the
black wire on the new battery (-) and the red wire is
connected to the red wire on the new battery (+).