Chamberlain 475M Owner's Manual

INSTALLATION
Mounting the standby power unit (SPU) can be done
using one of two methods. The SPU can be mounted
directly on top of the motor unit or it can be secured on a
structural support just above it.
Standby Power
Unit (SPU)
Side Screw
Slots for
Chassis Mount
1. Mounting the SPU Directly to the Motor Unit.
• Position the SPU on top of the motor unit. Make sure
the motor unit power cord is drawn out from beneath
the SPU. The SPU should sit firmly on top of the motor
unit. Adjust angle iron placement so that it is out of the
way of the SPU's installation (Figure 1).
• Align the two screw slots on the SPU to the back
chassis holes.
• Secure the SPU to each side of the chassis flanges
with 3/4" screws provided.
2. Mounting the SPU Directly to a Structural Support.
• After the motor unit has been installed, the SPU can be
mounted to either the ceiling or a wall within 3' (.9 m) of
the motor unit.
• Position the SPU as desired to a structural support
(ceiling joist or wall stud) (Figure 2).
• 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 (provided).
3. Connect the SPU to the Motor Unit.
• Disconnect the motor unit from the electrical outlet.
• Connect the SPU cord into the connector on the end
panel on the motor unit. Connect the motor unit to the
electrical outlet. The SPU will activate and all LEDs will
turn on for 3 seconds.
• The green LED will begin flashing, indicating the SPU
is charging from the motor unit.
IMPORTANT NOTE: Installation of SPU when
permanent electrical power is not available (such as new
construction and the electricity is not installed) may
damage the batteries. Unplug SPU after testing to
prevent damage.
Holes for Ceiling Mount
Lag Screw
1-1/2"
Bring Power Cord
out left side slot
STANDBY POWER UNIT
Model 475LM Owner's Manual
WARNING
To prevent possible SERIOUS INJURY or DEATH from
electrocution, disconnect ALL electric and battery power
BEFORE performing ANY service or maintenance.
3/4" Screw
3/4" Screw
Lag Screws
1-1/2"
475LM Standby
Power Cord
Power Unit
Bring SPU Cord out right
side slot away from Antenna
Antenna
➡
SPU
Connector
Power Cord
Figure 1
Structural
Supports
Figure 2
475LM Standby
Power Unit
SPU Cord
SPU Connector