Chamberlain RJO20 RJO20 Owner s Manual - English - Page 17
Install the Protector System®, IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR
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Installation (continued) 10 Install the Protector System® The safety reversing sensor must be connected and aligned correctly before the garage door will move in the down direction. This is a required safety device and cannot be disabled. IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR When properly connected and aligned, the safety reversing sensor will detect an obstacle in the path of its electronic beam. The sending sensor (with an amber indicator light) transmits an invisible light beam to the receiving sensor (with a green indicator light). If an obstruction breaks the light beam while the door is closing, the door will stop and reverse to full open position, and the opener lights will flash 10 times. The sensors must be installed inside the garage so that the sending and receiving sensors face each other across the door, no more than 6 inches (15 cm) above the floor. Either sensor can be installed on the left or right of the door as long as the sun never shines directly into the receiving sensor lens. The mounting brackets are designed to clip onto the track of sectional garage doors without additional hardware. If it is necessary to mount the sensors on the wall, the brackets must be securely fastened to a solid surface such as the wall framing. Extension brackets (see accessories) are available if needed. If installing in masonry construction, add a piece of wood at each location to avoid drilling extra holes in masonry if repositioning is necessary. The invisible light beam path must be unobstructed. No part of the garage door (door tracks, springs, hinges, rollers or other hardware) may interrupt the beam while the door is closing. Be sure power is NOT connected to the garage door opener BEFORE installing the safety reversing sensor. To prevent SERIOUS INJURY or DEATH from a 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. Safety Reversing Sensor 6" (15 cm) max. above floor Invisible Light Beam Protection Area Safety Reversing Sensor 6" (15 cm) max. above floor Facing the door from inside the garage. 17