1 The second rectangle has a length of 16 centimeter (6.3 in) and a width of 8 centimeter (3.1 in). 2  Find the linear scale factor between the two shapes. 3  The length of the smaller rectangle corresponds to the length of the larger rectangle. 4  The length of the smaller rectangle equals 4 centimeter (1.6 in).
Reset the Keypad. The Smart or Learn button on the motorized unit attached to the garage ceiling resets the keypad and the control unit that operate the garage door opener's motor. You'll need to enter a new code into the keypad to make it operational again and reprogram the control unit.o verify that the reset took, enter the old PIN code into the keypad to see if it opens the garage door. If it does, the reset didn't take. Repeat the step to reset the keypad and verify the old code doesn't work before proceeding.
Remove all ropes and remove or make inoperative all locks connected to the garage door before installingopener.5. If possible, install the door opener 7 feet or more above the floor. Adjust the emergency release cord so thatknob hangs 6 feet above the floor.6.Do not connect the opener to source of power until this manual instructs you to do so.7.ou can quickly press andrelease theâââ button to move the door in small increments.You can also use the â+â key to move the door slightly inthe up direction. Door is fully closed when the door bottomedge presses firmly onto the ground. Once the door is in the desired position, press and release the âPâ button.