Install The Protector System - Chamberlain Merlin MJ3800R Installation And Operating Instructions Manual

INSTALLATION STEP 8

INSTALL THE PROTECTOR SYSTEM

When installed the safety reversing sensor must be
connected and aligned correctly before the door
opener will move in the down direction. This safety
device is provided for your safety and MUST not be
disabled.
INSTALLING THE BRACKETS
Be sure power to the opener is disconnected.
Figures 1 and 2 show recommended assembly of
bracket(s) and "C" wrap based on the wall installation of
the sensors on each side of the door shown above, or on
the door tracks themselves. Figures 4, 5 & 6 show
better. Make sure the wraps and brackets are aligned
variations which may fit your installation requirements
so the sensors will face each other across the door.
hardware shown. Note alignment of brackets for left
• Connect each assembly to a slotted bracket, using the
and right sides of the door. Finger tighten the lock
• Use bracket mounting holes as a template to locate and
nuts.
drill (2) (4.8mm) diameter pilot holes on both sides of the
door, (100mm). Max height is (100mm).
• Attach bracket assemblies with 1/4"x1-1/2" lag screws as
shown.
• Adjust right and left side bracket assemblies to the same
distance out from mounting surface. Make sure all door
hardware obstructions are cleared. Tighten the nuts
securely.
• Centre each sensor unit in a "C" wrap with lenses
pointing toward each other across the door.
• Secure sensors with the hardware shown in Figure 6.
Finger tighten the wing nut on the receiving eye to allow
for final adjustment. Securely tighten the sending eye wing
• Run wires from both sensors to the opener as shown on
nut.
page 13. Use insulated staples to secure the wire to the
wall and ceiling.
• Connect both sets of wires to the opener terminals as
• Plug in the opener. If your opener has the Multi-Function
shown page 13.
Door Control, make sure the Lock Feature is off. Red
indicator lights in both the sending and receiving eyes will
glow if wiring connections and alignment are correct.
If the indicator lights are flashing (and the invisible light
beam path is not obstructed), alignment is required.
• Loosen the receiving eye wing nut to allow slight rotation
of unit. Adjust sensor vertically and/or horizontally until the
red indicator light glows.
• When indicator lights are glowing in both units, tighten the
wing nut in the receiving eye unit.
figure 1
Mounting Bracket
With Square Holes
#10-32
Lock Nuts
TM
ALL Installations
"C" Wrap
#10-32x3/8"
Screws
Be sure power is not connected to the door opener
BEFORE installing the safety reversing sensor.
To prevent SERIOUS INJURY or DEATH from a closing
door:
• Correctly connect and align the safety reversing
sensor. This required safety device MUST NOT be
disabled.
• Install the safety reversing sensor so beam is NO
HIGHER than 100mm (4") above the floor.
WALL Installation
Inside
Wall
Mounting Bracket
1/4"-20
Lock Nuts
Inside
Mounting
Wall
Bracket
with Slot
Garage
Floor
Inside
Indicator Light
Wall
"C"
Wrap
Floor
Wing Nut
12
1/4x1-1/2"
1/4-20x1/2" Carriage Bolts
Lag Screws
(with square shoulder)
"C" Wrap
with Slot
Mounting Bracket
with Square Holes
Alternate Wall
Mount
Mounting
Bracket with
Square Holes
"C" Wrap
Sensor
Indicator Light
Alternate Floor
Mount
Sensor
Mounting Bracket
with Square Holes
Mounting Bracket
with Slot
Attach with
concrete anchors
(not provided)
"C" Wrap Wire
Indicator
Light
1/4-20x1-1/2"
Hex Bolt
Sensor
figure 2
figure 4
figure 5
figure 6