LiftMaster LJ8950W LJ8950W Manual - Page 16

Installation 6 Install the Light Curtain (Not Provided) The following are general instructions for a typical installation, refer to the complete instructions included with the Light Curtain. The plug-in power supply accessory (model 100MAPS) is required to power the Light Curtain. LiftMaster Light Curtain (Model LC-36A) is an ancillary entrapment protection device designed with 8 optical sensors that form 22 total invisible light beams which create a cross-pattern or netting effect for maximum protection against entrapment. If an obstruction breaks any light beam while the door is closing, the operator will stop and reverse to the full open position. The Light Curtain Transmitter must be installed facing the Light Curtain Receiver across the entrapment zone, 12" (30.5 cm) above the primary monitored entrapment protection device. The minimum installation width is 3 ft. (.91 m) and the maximum width is 33 ft. (10 m). NOTE: Ensure that no part of the door, door tracks, springs, hinges, rollers, cords or other hardware interrupts the light beam while the door is closing. INSTALLATION 1. Fasten the mounting brackets loosely to both Light Curtains with the screws provided. 2. Measure a minimum of 12" (30.5 cm) above the safety reversing sensors. Mark this location. The Light Curtain must be installed above this point. 3. Hold the Light Curtain up to the desired mounting location with the cable end pointing upward. Secure the bottom mounting bracket to the mounting surface. The mounting brackets must be securely fastened to a solid surface such as a wall framing. 4. Make sure the Light Curtain is level and secure the upper mounting bracket to the mounting surface. 5. Tighten the screws to secure the Light Curtain to the mounting bracket. 6. Secure the other Light Curtain to the opposite side of the door following steps 2 - 5, making sure they are aligned. WIRING Transmitting Light Curtain: • White Wire to white terminal on door operator • Black Wire to grey terminal on door operator Transmitting and Receiving Light Curtains: • Brown Wire (+) to White/Black on power supply • Blue Wire (-) to Black on power supply To prevent possible SERIOUS INJURY or DEATH from a closing door: • Be sure to DISCONNECT POWER to the operator BEFORE installing the Light Curtain. • The door MUST be in the fully opened or closed position BEFORE installing the Light Curtain. • Correctly connect and align the Light Curtain transmitter and receiver. • The Light Curtain is for use with LiftMaster Commercial Doors. Use with ANY other product voids the warranty. • DO NOT use this product for the protection of dangerous machinery or in explosive atmospheres or radioactive environments. Use ONLY specific and approved types of devices for such applications. • The Light Curtain MUST be installed ONLY by authorized and fully trained personnel. • LiftMaster Monitored Entrapment Protection devices are required in addition to the Light Curtain. The Light Curtain may NOT be used as the sole entrapment protection device for ANY entrapment zone. White Black Transmitting Light Curtain Light Curtain Mounting bracket Nylon nut Screw with nylon washer 16 Plug-In Power Supply Brown (+) Black/White Blue (-) Black Receiving Light Curtain 12" (30.5 cm) minimum above the safety reversing sensor