WARNING Start by Reading These Important Safety Instructions Failure to comply with the following instructions may result in serious personal injury or property damage. • Read these instructions carefully • The garage door opener is designed and tested to offer reasonable safe service provided it is installed and operated in strict accordance with the instructions in this manual.
Planning TABLE OF CONTENTS Survey the area to see if any of the conditions below apply to your NTRODUCTION installation. Additional materials may be required. You may find it helpful to refer back to this page as you proceed with the installation of your Safety symbol review and signal word review .
Preparing your Door ASSEMBLY STEP 1 Before you begin: Attach the Collar to the Motor Unit • Disable locks. To avoid installation difficulties, do not run the door operator until • Remove any ropes connected to door. instructed to do so. •...
INSTALLATION IMPORTANT INSTALLATION INSTRUCTIONS DEATH: To reduce the risk of SEVERE INJURY or 7. NEVER wear watches, rings or loose clothing while installing or 1. READ AND FOLLOW ALL INSTALLATION WARNINGS AND servicing operator. They could be caught in the door or operator INSTRUCTIONS.
If permanent wiring is required by your local code, refer to the following procedure. To make a permanent connection through the 22mm hole in the back of the motor unit (according to local code): To prevent possible SERIOUS INJURY or DEATH from a falling door: •...
Installing the Multi-function Door Control INSTALLATION STEP 9 INSTALLATION STEP 9 (78LM Optional Accessory): Press the white square to open or close the door. Press again to stop the Install the Rain Cover (optional) Install the Rain Cover (optional) door while it is moving. Position rain cover over the RJO and press down firmly until cover clips Position rain cover over the RJO and press down firmly until cover clips Light Feature: Press the Light button to turn the opener light on or off.
ADJUSTMENT STEP 2 ADJUSTMENT STEP 5 Setting the Force Test the Safety Reversal System The force setting button is located on the front panel. The force TEST setting measures the amount of force required to open and close • With the door fully open, place a 50mm (1 1/2”) board (or a 4x2 laid the door.
• Reconnect the door to the operator. Using Your Door Opener Automatic Close Timer Function Note: Requires the Chamberlain Protector System (IR-sensors) to be Your operator and hand-held remote control have been factory-set to a installed. If Protector System (IR-sensors) is installed only to enable the...
• If it is still flashing 5 times and motor unit moves 150-200mm (6-8"),The unit’s APE (Absolute Positioning failure. Unplug to reset. Encoder) may need to be replaced, for details contact your Chamberlain reseller. 9 FLASHES Symptom: Door reverses while closing.
Remove the bell wire from the door control terminals and operate • Call Chamberlain-Liftmaster dealer for replacement power lock. from the remote only. If this solves the problem, the door control is faulty (replace), or there is an intermittent short on the wire between the control console and the motor unit.
Start Circuit .....Low voltage push button circuit. Dimensions max door height....4.2m (14’) max. door width....5.5m DIMENSIONS max. door area....16m² Hanging Weight ....11kg Receiver Memory Registers ..64 Operating Frequency..433.92MHz SPECIAL NOTE: Chamberlain strongly recommends that the protector system be installed on all garage door openers.
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