Chamberlain Merlin MJ3800R Installation And Operating Instructions Manual page 11

INSTALLATION STEP 6
INSTALLING THE WIRELESS WALL BUTTON
(CM128) (OPTIONAL ACCESSORY)
Control must be mounted out of the reach of children
at a height of 1.5m with an unobstructed view of the
door.
• Ensure your MJ3800R opener is switched off
whilst installing your wireless door control to
prevent accidental activation.
• Remove the cover from the CM128.
• Mount CM128 as shown using the screws
provided if mounting into a wall box (not
provided).
• If mounting directly on the wall use wall anchors
(provided) to fix unit to the plasterboard wall.
• Replace the cover plate and affix the warning label
adjacent to the wall controller.
Fix the emergency door release label adjacent to the
opener.
CONNECT ELECTRIC POWER
TO AVOID INSTALLATION DIFFICULTIES, DO NOT RUN
THE GARAGE DOOR OPENER UNTIL INSTRUCTED TO
DO SO.
Connect to properly fused and earth power outlet.
INSTALLATION STEP 7
MOUNTING THE EVERCHARGE STANDBY
POWER UNIT (SPU)
• The SPU can be mounted to either the ceiling or a wall
within .9 m (3') of the opener.
• Position the SPU as desired to a structural support
(ceiling joist or wall stud).
• Attach the SPU to the support using the mounting holes
on either side of the SPU.
• Secure the SPU using the 1-1/2" lag screws (2) provided
with the SPU unit.
• Connect the SPU cord into the connector on the bottom
of the opener.
• Follow all instructions included with the CM475 unit to
test for proper operation and testing of the SPU.
Disconnect power to the opener whilst installing this
accessory to prevent accidental activation.
Locate minimum 1.5m above the floor.
SPU Cord
11
+
TM
CM475 EverCharge
Standby Power Unit
Connector