Commercial garage door operators

On a commercial door, the opener is usually called an operator, and it is built for heavier doors and more cycles than a home unit. The MassGarage team handles large commercial operators across all of Massachusetts, from diagnosing a unit that has quit to fitting a new one. If you need the door itself looked at, start with commercial garage door repair. For home openers, see all openers.

Three ways an operator can drive the door

Manufacturers sort commercial operators by how they attach to the door. Genie's commercial lineup, for example, offers all three of the styles below:

• Trolley. As Chamberlain describes rail openers, a motor drives a trolley along a track, pulling the door open or pushing it closed. The track runs along the ceiling behind the opening.
• Jackshaft (side-mount). Garaga describes a wall-mount opener as one installed on the wall beside the door that turns the torsion spring shaft directly, with no rail, which frees up ceiling space. It works only with a torsion spring system.
• Hoist. Genie lists hoist operators in its medium-, standard- and heavy-duty classes, alongside its trolley and jackshaft models.

Which style fits depends on the door, the space around the opening and what else shares that wall and ceiling. We check those on site rather than guessing from a photo.

Duty cycle: how hard the door works

Commercial operators are rated by cycles, where one cycle is a full open and close. Genie publishes these ratings for its own line:

• Light-duty trolley: up to 12 cycles per hour. Light-duty jackshaft: up to 15 cycles per hour and 30 per day.
• Medium-duty hoist, jackshaft and trolley: up to 15 cycles per hour.
• Standard-duty hoist, jackshaft and trolley: up to 30 cycles per hour.
• Heavy-duty hoist and trolley: up to 60 cycles per hour.

LiftMaster makes the same point in plainer terms: knowing the daily cycle count allows you to extend the life of the operator. Before you call, try to answer these questions:

1. How many times does the door open in its busiest hour, and in a full day?
2. Is the door wet or washed down? Genie offers a NEMA 4 modification on various models for damp locations, so mention it when a unit is being chosen.
3. Who uses the control: one trained person, or anyone who walks past?
4. Has the use of the space changed since the operator was put in?

Safety devices: photo eyes and edges

LiftMaster explains that the UL 325 standard requires entrapment zones to be protected by monitored safety devices designed to reverse a moving door. It names two kinds: non-contact photoelectric sensors, usually called photo eyes, and pressure-sensitive contact edge sensors fitted along the door. LiftMaster describes its CPS-U commercial photo eyes as primary monitored entrapment protection, and says the devices specified for an operator must be included in the manufacturer's UL Listing. So a replacement sensor has to be one the operator's maker lists for that unit.

For everyday checks, LiftMaster's safety page describes a simple test: block the photo eye and press close, and the door should not close; place a low object in the door's path, and the door should reverse off it. If a door fails either test, take it out of use and call. This is general manufacturer information, not an assessment of your door; we inspect the safety devices as part of any operator visit.

Repair the operator or replace it?

Plenty of operator problems come down to one part: a worn drive component, a failed board, a damaged sensor or wiring that was hit. Those are repair jobs. Replacement makes more sense when the operator is rated for fewer cycles than the door now sees, when parts for an older model are no longer easy to source, or when a change in the building calls for a different mounting style. In each case we explain what failed and why before you approve anything.

Asking for an estimate

Call (781) 602-0737 or send details through the contact page. Useful to include: the door's size and type, the operator's brand and model label, a rough cycle count, and what the operator is or is not doing. Not an authorized dealer for any brand. Licensed and insured, and we service and install all brands. MassGarage is family owned with 15 years of experience. More on our work for businesses is on the commercial page.

Written by the MassGarage team.