LiftMaster 81602 Owners Manual - English French Spanish - Page 22
Install the Protector System®, Introduction
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Install the Protector System® Introduction Be sure power is NOT connected to the garage door opener BEFORE installing the safety reversing sensor. To prevent SERIOUS INJURY or DEATH from closing garage 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 6" (15 cm) above garage floor. IMPORTANT: The safety reversing sensors MUST be connected and aligned correctly before the garage door opener will move in the down direction. The Protector System® includes two safety reversing sensors which use a light beam to prevent the garage door from closing. The sending sensor (amber LED) transmits the beam to the receiving sensor (green LED) when both are powered and aligned. If an obstruction breaks the light beam while the door is closing, the door will stop, and reverse to the full open position. When installing the safety reversing sensors, check: • Sensors are installed INSIDE the garage. • Sensor lenses are facing each other. IMPORTANT: Do not allow direct sunlight to the receiving sensor (green LED). • Sensor beam is NO HIGHER than 6" (15 cm) above the floor and the light beam is unobstructed. Safety Reversing Sensor 6" (15 cm) max. above floor Invisible Light Beam Protection Area Safety Reversing Sensor 6" (15 cm) max. above floor 22