Chamberlain LiftMaster CSW24V Installation Manual page 25

WIRING
CONNECT BATTERIES
33AH BATTERIES
The batteries are charged in the circuit by the integrated transformer. The batteries
are for battery backup or solar installation. The 33AH application requires the 33AH
battery harness (Model K94-36596) and an additional battery tray (Model K10-
36183) to allow more space in the enclosure. The heater option cannot be used with
the 33AH battery application.
1
Remove the outlet housing from the chassis by removing the screws (2).
2
Remove the electrical box from the chassis by removing the 4 corner
screws.
3
Disconnect the red (+) and black (-) wires going from the bridge rectifier to
the J15 plug labeled DC POWER on the control board.
4
Connect the red (+) and black (-) wires from the new 33AH harness to the
bridge rectifier.
5
Reassemble the operator.
6
Connect a jumper between the positive (+) terminal of one battery to the
negative (-) terminal of the other battery.
7
Connect the red wire from the J15 plug to the positive (+) terminal of the
battery.
8
Connect the black wire from the J15 plug to the negative (-) terminal of the
battery.
9
Turn ON AC power to the operator.
10
Turn ON the AC power switch on the operator.
11
Plug the J15 plug back into the control board.
(back of Electrical Box)
-
+
-
-
Bridge Rectifier
Black (-)
23
CONNECT BATTERIES
Outlet Housing
J15 Plug
Red (+)
33AH Batteries