What is an automatic door operator? It is the powered unit – motor, gearbox and controller – that opens and closes an automatic door. When people ask what is an automatic door operator, they usually want to know how it differs from the door itself and what is inside it. This guide answers both in plain English.
So, what is an automatic door operator?
An automatic door operator is the drive unit mounted above or beside the door. It takes a signal from the sensors and moves the leaf – opening it, holding it, then closing it – with force and speed limited for safety.
What is inside the operator
Three core parts do the work: an electric motor for movement, a gearbox or belt drive that transfers it to the leaf, and a controller that decides when and how the door moves. A battery backup is usually added so the door keeps working during load shedding.
The operator vs the whole door
The operator is only the engine. The complete system also includes the door leaf, the track or hinges, and the automatic door sensors. People often say operator when they mean the whole door – but strictly, the operator is just the powered unit.
Sliding vs swing operators
A sliding operator moves a leaf sideways; a swing operator pushes or pulls a hinged leaf. Which you need depends on the door – our automatic door operator guide explains how to choose.
How big an operator do you need
Size depends on the door weight, width and traffic. See what size automatic door operator you need for the details. In short, what is an automatic door operator in your building will come down to the door it has to move.
FAQ
Is the operator the same as the motor? No – the motor is one part inside the operator, alongside the gearbox and controller.
Where is the operator fitted? Usually in the header above the door, or beside a swing leaf.
Talk to us
Coetz supplies and installs automatic door operators across Gauteng, with supply nationwide. Learn how automatic doors work, browse automatic door systems, or contact our team. For standards, see EN 16005.
Getting it right with Coetz
When it comes to what is an automatic door operator, the details decide the outcome – the operator rating, the sensor package and a clean installation, all built to recognised automatic door technology safety principles. Coetz specifies each entrance to its real traffic and building rather than a one-size-fits-all kit, so the door opens smoothly and closes safely from the first day.
Coetz has years of experience with automatic entrances across South Africa, from single shopfronts to multi-door developments. We install to standard, commission every safety function, and back the entrance with service and genuine spare parts, so it keeps working long after the invoice is paid.
Planning early is the simplest way to keep a project on budget and on time. Getting the power supply, the opening and the safety package right up front avoids rework and return visits later.
Ready to move ahead? Tell us your opening size and traffic level, and we will recommend the best option and a clear, itemised price.
How the operator controls the door
The operator is more than a motor. Its control board reads the sensors, decides when to move the door and then drives the motor smoothly through each stage of the cycle. When someone approaches, it accelerates the door open, slows it before it reaches the end of its travel, holds it open while the presence sensor sees someone in the opening, and then closes it gently. During commissioning the controller learns the length and weight of the door so that it can judge the right speed and force for every part of that movement.
While the door moves, the controller also watches how hard the motor is working. If the door meets an obstruction, the extra load tells the controller to stop and reverse, which is one of the safety features that protect people in the opening.
Settings that are adjusted on site
Every entrance is different, so the operator is set up for the doorway it serves. The settings a technician adjusts include:
- Opening speed and closing speed.
- Hold-open time, which is how long the door waits after the last person has passed.
- Opening force and obstruction sensitivity.
- Partial opening width on sliding doors.
- The operating mode: automatic, exit only, open or locked.
These settings are recorded at handover and checked again at every service, because changes in the building, such as new flooring or a different traffic pattern, can mean the door needs to be adjusted.
Power, batteries and backup
An automatic door operator runs from mains power, ideally with a dedicated power point close to where the operator is mounted. A battery backup option keeps the door working through power failures and load-shedding, or lets it open and stay open when the power goes, depending on how it is set up. If your building has a generator or inverter, tell us at the quotation stage so that the operator can be connected to suit it.
How long does an automatic door operator last?
The lifespan of an operator depends mainly on how many cycles it does and how well it is looked after. The motor and control board are built for heavy use, but the parts around them, such as belts, rollers, sensors and locks, wear with every cycle. Replacing those wear parts during regular servicing protects the operator itself, which is the most expensive part of the door.
Repair or replace?
When an operator starts giving trouble, repair is usually the first step. Faults are often caused by a worn belt, a failing sensor or a setting that has drifted, all of which can be put right on site. Replacement makes sense when spare parts are no longer available, when the operator was undersized for the door from the start, or when the entrance itself is being upgraded. For the MC-125 and MCW-100, common spare parts are priced online in our automatic door spares range.
Where the operator is mounted
On a sliding door the operator sits in a header that runs across the top of the opening, with the leaves hanging from it on rollers. On a swing door the operator is mounted above the door, on the push or pull side, and moves the leaf through an arm. In both cases the space above the opening matters: there has to be enough height and a solid fixing for the header or operator, which is why we ask for a photograph of the wall or ceiling above the door before quoting.
Who should service an automatic door operator?
An operator should be serviced by someone trained on that system, with the right tools to check speeds, forces and sensor settings. A general handyman can clean the track and the glass, but adjusting the controller or replacing safety sensors needs a technician who understands how the settings affect the safety of the people using the door. Keeping a record of each service also makes it easier to spot parts that are wearing faster than they should.
Common questions about automatic door operators
Can an operator be added to the door I already have?
Often, yes, particularly on a sound hinged door, which can be fitted with a swing operator. A manual sliding door usually needs a complete automatic sliding system instead.
Is an automatic door operator noisy?
A correctly installed and serviced operator runs quietly. Noise usually comes from worn rollers, a slack belt or debris in the floor guide rather than from the motor itself.
What happens if the operator fails?
The door can be opened by hand once the operator is disengaged, and a technician can usually diagnose the fault on site. Common spare parts are kept so that most repairs do not need a long wait.
Choosing the right operator: a short checklist
Whether you are fitting a new door or automating an existing one, the same questions decide which operator is right:
- Is the door sliding or hinged, and is it a single leaf or a pair?
- How heavy and how wide is each leaf?
- How many people will use the door on a busy day?
- Is the entrance exposed to wind or a pressure difference inside the building?
- What should the door do in a power failure?
- Will access control, push buttons or after-hours locking be needed?
Answering these before you ask for prices means every quote you receive is for the same door, which makes the comparison much easier.
What a service visit on an operator includes
A routine service is about keeping the door safe and catching wear early. A technician checks the sensors and their detection fields, tests the opening and closing speeds and forces, inspects the belt, rollers and guides, tests the battery backup where one is fitted, cleans the track and confirms that the manual release and locking work. Any worn parts are noted or replaced, and the settings are recorded for the next visit.
If you are not sure which operator your door needs, send us a photograph of the doorway, the opening sizes and a note of how busy the entrance is. That is usually enough for us to recommend the right operator, explain why it suits the door and give you a clear written quotation, so you can decide with all the facts in front of you.
Budgeting for automatic door operators? A Plain guide
Opening width, glass specification, sensor layout and access control are what separate one quotation from another, so compare them line by line rather than on the total alone. A free site measure confirms the opening, the power supply and the traffic before we commit to a fixed price, and the standard glazing is 6.38 mm laminated safety glass.
Sensors, safety and commissioning
An entrance is only as good as its sensors. Motion sensors open the door as somebody approaches and see movement rather than a standing person; presence sensors hold it open while somebody is in the opening, which is what stops a door closing on a person who has paused. Safety beams and a force limit reverse the leaf if something is in the way.
Commissioning sets opening and closing speed, hold-open time, force and the safety zones either side, and the settings are written down at handover so anyone adjusting the door later can see what it was signed off at.
What maintenance on automatic door operators? A Plain guide involves
We recommend a service every six months, with more frequent visits for very busy entrances. Each visit realigns sensors, inspects belt, rollers and guides, re-checks opening and closing force and swaps wear parts before they fail. Because we hold operators, sensors, belts and control boards in stock, most repairs happen on the visit rather than waiting on an import.
Servicing runs nationwide, and Gauteng call-outs are attended within 24 hours.
What glass is used?
6.38 mm laminated safety glass as standard, with the framing powder-coated to suit the building.
What the entrance is made of
Glass and frame decide how automatic door operators? A Plain guide looks and how it behaves in use. The standard is 6.38 mm laminated safety glass; performance and tinted glass are options, quoted separately, where heat or privacy are a factor. Frames are powder-coated to the building colour, and slim sightlines keep more of the opening as daylight rather than aluminium.
Can the existing opening be used?
Most retrofits work. We check three things for automatic door operators? A Plain guide: the head and its support, how square the opening runs, and where the power is. If all three are workable, an operator goes onto the opening you already have. If they are not, we say so before quoting rather than discovering it on installation day.
When something goes wrong
Describe what the door is doing and a technician can usually name the cause before travelling: held open points to sensors or a detection zone problem, reversing points to an obstruction or force limit, and noise points to rollers, belt or guides. Because the operators, sensors, belts and control boards we fit are held in stock, most of those are fixed on the first visit.
Can the hold-open time be changed?
Yes — it is adjustable at commissioning and afterwards, which is how sites run a longer hold during deliveries and a shorter one at quiet times.
How quickly can a fault be attended?
Gauteng call-outs are attended within 24 hours, and service runs nationwide. Telling us the symptom when you call means the right spare travels with the technician.
Automatic door operators at a glance
- Pricing for automatic door operators follows the opening width, the glass and the sensor layout.
- Ask us to confirm the opening before ordering automatic door operators.
- Every enquiry about automatic door operators gets a written specification, not a verbal estimate.
- Automatic door operators are supplied, installed and serviced by one accountable team.
More about What Is An Automatic Door Operator
Understanding what is an automatic door operator helps you specify the right entrance the first time. The best results come from matching the operator, sensors and glass to the building and its traffic, then commissioning the door so it opens smoothly and closes safely. Cutting corners on any of these usually costs more later in call-outs and downtime, so it pays to get the specification right at the start.
Every site is a little different, so the what is an automatic door operator that suits a busy mall entrance is not the same as a quiet office door. Traffic volume, opening width, safety requirements and the look of the frontage all shape the final choice, which is why a short site assessment is always worth the time before you commit.
Coetz supplies, installs and services automatic doors across South Africa, and we are happy to advise on what is an automatic door operator for your project – from a single entrance to a multi-door development, backed by service and genuine spare parts.
What is an automatic door operator: getting a quote
Now that you know what an automatic door operator does, MC Automations, our parent company, can supply, install and service one. To quote accurately, we need to know:
- The opening. The width and height of the clear opening, with photos of the existing frame or shopfront.
- Sliding or swing. The MC-125 automatic sliding door system is R27 590 and the MCW-100 swing door operator R15 900, excluding VAT.
- Traffic. How many people use the entrance, and whether trolleys, prams or wheelchairs pass through.
- Power. Whether there is a power point near the head of the door.
- Installation. Installation is included in Gauteng; outside Gauteng it is quoted per project.
- Service and warranty. We recommend a service every six months, and the operator carries a 24-month warranty.
Still asking “What is an automatic door operator?” Call 010 412 0062, WhatsApp photos to 076 613 4418, or price an automatic door in the online estimator.
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