Commercial garage doors often get more use than residential doors. The typical home garage may only be opened once or twice a day whereas the commercial garage door is often used several times per hour. With this industrial application in mind, LiftMaster® has developed a full line of strong and durable commercial openers.
LiftMaster commercial door operators are UL325-2010 compliant
Effective August 29, 2010, Underwriters Laboratories mandated that all commercial garage door operators bearing the UL label must be equipped with continuously monitored safety devices, such as photo sensors or sensing edges, to detect and reverse the garage door if a person or object enters its path. ABC Garage Door Repair is proud to carry LiftMaster® commercial and residential products.
Place a stepladder at the area of the garage door opener. Loosen the screw that attaches the small wire antenna at the unit and pull off the wire.
You need at least 2 inches of clearance above the garage door.
The radio waves can be interrupted by electromagnetic fields that are given off by a variety of home appliances, electrical transformers, military bases/homeland security.
The difference between DC and AC operators is the type of motor used in them. While an alternating current (AC) goes back and forth between the power source, a direct current (DC) moves in one constant direction.