We balance-test the door by hand, then inspect springs, cables, hinges, rollers, tracks and seals. The operator is tested through full cycles, including the safety reversal and the light barrier, with limits, force, rail, trolley and chain or belt checked as well. The control board and power supply are looked over, and each remote and wall control is tested. You get a plain list of what was found. Please clear the garage floor and the area behind the door before we arrive.
