An automatic door operator is a motorized device that opens and closes a door without manual effort. It’s the mechanism you see on hospital entrances, pharmacy doors, and accessible building entries, the door swings open on its own when someone approaches or presses a push plate.
For buildings that need to meet ADA accessibility requirements, an automatic door operator can be the difference between a compliant entrance and a non-compliant one. But the operator itself doesn’t guarantee compliance. It has to be installed, adjusted, and maintained to specific standards.
When an Automatic Operator Is Required
The ADA Standards for Accessible Design don’t require automatic doors on every entrance. They require that doors in accessible paths be operable with one hand, without tight grasping or twisting, with a maximum opening force of 5 lbf for interior doors.
If a manual door can meet those requirements, lever hardware, low opening force, accessible clear width, an automatic operator isn’t required. But there are doors where manual operation can’t meet the standard: heavy exterior doors with wind load, doors with strong air pressure differentials, doors that are too heavy for the closer to allow 5 lbf opening force. On those doors, an automatic operator is the path to compliance.
ANSI/BHMA A156.10 is the standard for power-operated doors, doors that open automatically for all users. ANSI/BHMA A156.19 is the standard for low-energy power-operated doors, doors that open on actuation (a push plate, a push-and-go motion) but are slower and safer. Most commercial accessibility installations use A156.19 low-energy operators.
Low-Energy Operators (A156.19)
A low-energy door operator opens the door at a controlled speed, holds it open for a set time, then closes it at a controlled speed. The user activates it with a push plate, a card reader, or a motion sensor. The operator doesn’t “throw” the door open, it moves it slowly enough that someone standing in the door path won’t be struck with force.
A156.19 sets requirements for controlled opening time, a maximum kinetic energy that limits the force of the moving door, a minimum hold-open time, and a closing speed that doesn’t exceed the kinetic energy limit.
These requirements exist because a power-operated door that opens too fast or closes too hard is a safety hazard, particularly to people using wheelchairs or walkers who can’t move out of the way quickly.
Push Plates and Actuators
A low-energy operator has to be activated by the user. The most common actuator is a push plate, a large, accessible button mounted on the wall next to the door. ADA requirements for push plates:
- Mounted at a height of 34 to 48 inches (accessible from a wheelchair)
- Operable with one hand, without tight grasping
- Placed within reach of the door approach path
Some installations use motion sensors instead of push plates. A motion sensor detects approach and opens the door automatically. This is more convenient but requires careful placement, the sensor shouldn’t trigger when someone walks past the door without intending to use it.
What Goes Wrong
Opening speed too fast. If the operator isn’t adjusted correctly, the door opens faster than the A156.19 standard allows. This is the most common compliance failure and the most dangerous, a fast-moving power door can injure someone who can’t move out of the way.
Closing speed too fast. The same issue in reverse. A door that slams shut under power can strike someone from behind. The closing speed has to meet the kinetic energy limit, and the door should slow further in the last few degrees before fully closing.
Push plate out of reach. If the push plate is mounted above 48 inches or behind an obstruction, it’s not accessible from a wheelchair. This is a simple installation error but it fails ADA compliance.
Operator fails, door becomes inoperable. A power-operated door that fails should still be operable manually. If the operator seizes and the door can’t be opened by hand, it’s both an accessibility failure and an egress violation. The operator has to have a manual override, either a disconnect that releases the door for manual operation, or a fail-safe clutch that allows the door to swing freely.
Sensor dead zones. If the approach sensor doesn’t detect a person in a wheelchair or a child, the door doesn’t open. Sensor coverage has to be tested with actual users, not just a standing adult walking straight at the door.
Maintenance
Automatic door operators are mechanical devices with motors, gears, and sensors. They need periodic service:
- Check opening and closing speed against A156.19 requirements (with a stopwatch)
- Verify sensor coverage across the full approach path
- Test the manual override (the door should be openable by hand when the operator is off)
- Inspect the mounting, operators vibrate during use and can work loose over time
- Check the push plate height and function
ANSI/BHMA A156.19 requires that power-operated doors be inspected annually by a qualified person. The inspection has to be documented.
What Pro Locksmith Does
Pro Locksmith LLC installs and services automatic door operators for commercial properties throughout Broward County and Miami-Dade, including Fort Lauderdale, Hollywood, Pembroke Pines, Davie, Pompano Beach, Coral Springs, and Miami. We specify and install low-energy operators from approved manufacturers, paired with listed door hardware and ADA-compliant push plates. We perform annual inspections and speed adjustments per A156.19 requirements. Licensed and insured. Flat-rate pricing quoted up front. COI provided. Employees, not subcontractors.
If your building needs automatic door operators or your existing operators need service, call Pro Locksmith LLC at (954) 406-8266.
Sources
- ANSI/BHMA A156.10, Power Operated Pedestrian Doors
- ANSI/BHMA A156.19, Power Assist and Low Energy Power Operated Doors
- ADA Standards for Accessible Design, Sections 404 and 404.3
- NFPA 101, Life Safety Code (egress requirements for power-operated doors)
Choosing the Right Operator for the Opening
“Automatic door” covers several very different pieces of equipment. Before picking a model, it helps to know which family of operator fits the door you actually have.
Surface-mounted swing operators
This is the most common retrofit on existing commercial swing doors. The operator body mounts on the header above the door, and an arm connects it to the door leaf, much like a large door closer. Surface mounting works on most hollow metal and aluminum storefront frames and does not require replacing the door. The operator can be mounted on the push side or the pull side, and the choice affects which arm is used and how much clearance the door needs overhead.
Concealed operators
Concealed operators sit inside the header of the frame. They look cleaner and are harder to tamper with, but they usually require a header built to hold them. They make the most sense in new construction or when the storefront frame is already being replaced.
Sliding door operators
Sliding automatic doors are the type seen at supermarket entrances. They are typically full-power doors built to A156.10, with their own track, header, and sensor package. They are a storefront package rather than a hardware add-on. For most small offices, clinics, and shops, a low-energy swing operator on the existing door is the practical path.
Power assist
Power assist operators reduce the force needed to open a door manually but do not open the door on their own. They help with heavy doors, though they are not the same thing as a low-energy operator that opens the door from a push plate. If the goal is an entrance a wheelchair user can open without touching the door, a power assist unit alone may not meet that goal.
Coordinating the Operator With the Lock
An automatic operator can only open a door that is unlatched. This sounds obvious, but it is the source of many service calls. If the door has a locked latch or deadbolt and someone presses the push plate, the operator drives the door against the latch. Over time that strains the operator gears, the arm, and the frame.
There are three common ways to handle it:
- Leave the door unlocked and unlatched during business hours. Many shops dog down the exit device during the day so the latch stays retracted and the operator can swing the door. After hours, the door is locked and the operator is switched off.
- Add an electric strike. When the push plate is pressed, the strike releases first, then the operator opens the door a moment later. The operator control board handles this timing.
- Use an electrified exit device with latch retraction. The push plate signal retracts the latch, the operator opens the door, and the latch drops back when the door closes. This is a clean setup for doors that must stay latched at all times.
The timing between lock release and door movement has to be set so the lock is fully open before the operator starts pushing. A delay that is too short causes the door to bind. A delay that is too long makes the door feel broken to the person waiting.
After-Hours Operation and Access Control
Businesses often want the push plate to work during open hours but not after closing. The common approach is a keyswitch or a schedule from the access control system that turns the outside push plate off at night while leaving the inside plate active so people can still leave. A card reader can then trigger the operator for authorized staff after hours. This keeps the door accessible to employees with mobility needs without leaving the entrance open to anyone who presses a button.
Whatever the setup, the inside of the door has to allow exit at all times. The operator can be switched off, but the door hardware must still let people out by hand, which the section above on operator failure covers.
Vestibules and Double Entrances
Many commercial entrances in Broward and Miami-Dade have two sets of doors with a small vestibule between them to keep conditioned air in. Automating one set without the other leaves a wheelchair user stuck between doors. When both sets are automated, the order of operation matters:
- Pressing the outside push plate should open the outer door first. The inner door can be triggered by a second push plate inside the vestibule or by a timed sequence after the outer door.
- Push plates inside the vestibule must be placed where a person can reach them without backing into the path of the swinging door.
- The vestibule has to be deep enough that the swing of one door does not force the person into the swing of the other. If the space is tight, the swing direction and plate locations need careful planning.
Wind and Pressure on South Florida Entrances
Doors facing the ocean or an open parking lot catch a lot of wind, and buildings with strong air conditioning often have pressure differences between inside and out. Both work against a door operator. On a windy day, a door that opens and closes correctly in calm air may stall partway or refuse to close fully. The fix is usually an adjustment of the operator’s closing force and hold-open time within the limits of the standard, sometimes combined with a check on the building’s air balance. If the problem is constant, a vestibule or a different swing direction may be the real answer.
During hurricane preparation, operators on doors that will be shuttered or boarded should be switched off so nobody triggers a door against a panel. After the storm, test the operator before putting the door back into service, because water intrusion into the header can affect the control board.
Fire-Rated Doors With Operators
Automatic operators are sometimes installed on fire-rated doors, such as corridor doors in medical buildings. On those openings, the operator has to be suitable for use on a rated door, and the door must close and latch when the fire alarm activates. That usually means the operator is tied to the fire alarm system so it releases and lets the door closer bring the door shut. A rated door that is held open by an operator during an alarm defeats the purpose of the rating. When we survey a door, the fire label on the frame and the leaf is one of the first things we look at.
Where Operators Are Most Often Requested
Some locations come up again and again in our work across the service area:
- Medical and dental offices, where patients arrive with walkers, wheelchairs, or after procedures.
- Pharmacies and clinics with heavy aluminum storefront doors.
- Restrooms in public buildings. These often use a push plate outside and an occupancy lock inside that disables the outside plate while the room is in use.
- Office building lobbies, where the main entrance serves many tenants.
- Places of worship and community spaces with large double doors.
Signage and User Awareness
A door that moves on its own can surprise people who are not expecting it. Signage on the door tells users it is automatic and which way it swings. Push plates usually carry the accessibility symbol so users know what they are for. Faded or missing decals are an easy item to replace during an annual inspection, and they help reduce the chance of someone walking into the swing path from the wrong side.
Daily Checks Staff Can Do
The annual inspection covers the full standard, but staff can catch problems between visits with a quick walk-through when they open each morning:
- Press the push plate on both sides and watch the door open fully and close smoothly.
- Stand in the swing path at the door’s edge and confirm that the door stops or reverses as designed rather than pushing through.
- Listen for grinding, clicking, or a motor that labors.
- Check that the door latches when it closes, if it is supposed to.
- Look for loose screws on the arm and header cover.
If anything seems off, turn the operator off and leave the door in manual mode until it is checked. A door that works by hand is safer than a power door that is behaving unpredictably.
The Operator Is Only One Part of an Accessible Entrance
An operator solves the opening force problem. It does not fix the rest of the doorway. When we look at an entrance, we also check the items around the door that can keep it from working for a wheelchair user even after the operator is installed:
- Clear width. The open door, including the operator arm and any hardware projecting into the opening, has to leave enough clear width to pass through. An operator arm or a stop that keeps the door from opening fully can reduce that width.
- Thresholds. A tall threshold or a worn, lifted saddle can stop a wheelchair or walker at the door, powered or not. Storefront thresholds in older plazas are a frequent problem.
- Level landing. The ground right outside the door should be level enough to wait on while the door opens. A sloped approach makes it hard to stay clear of the swing.
- Door closer condition. If the door will be opened by hand when the operator is off, the closer still has to be adjusted properly. A worn closer fighting the operator shortens the life of both.
These items are not always our work. Concrete and threshold changes may belong to a contractor. We point them out so the owner is not surprised when a new operator does not make the entrance fully usable on its own.
Questions to Answer Before an Installation
A site visit goes faster, and the proposal is more accurate, when the following are known ahead of time:
- Is the door currently locked during business hours, and with what hardware?
- Is there an access control system, and should the operator work with it?
- Is there power near the door header, or will a new circuit be needed from an electrician?
- Is the door fire-rated?
- Which side of the door do most users approach from, and is there room for a push plate on a wall or a bollard?
- Are there existing complaints, such as the door being hard to open or closing too fast?
Pro Locksmith works on commercial doors from Coral Gables and Coconut Grove up through Broward County and into Boca Raton and Delray Beach, with commercial service extending north to West Palm Beach. If you manage a property with a heavy door that tenants or customers struggle with, an operator survey is a practical first step.