Automatic Doorway Injuries – High And Low Electrical Power Automatic Doorways

Large & Low Electrical power Door SYSTEMS – WHAT MAKES THEM DIFFERENT?

Computerized doorways are generally grouped into two major categories. Small electricity and superior vitality doors. The difference between the two types of doors pertain to the ways that the .

Low Power Doorways

Lower energy doorways are often thought of as “handicap accessible automated doorways”. These doorways usually have signage showing the universal symbols that are understood as wheelchair accessible openings. In most installations, low strength door systems are either swinging or sliding doors. They are predominantly activated by a “knowing act” on the part of the doorway user. A button or push plate is used to activate the doorway operating mechanism. A person wishing to enter the doorway must push the button to start the doorway opening function. The low electricity requirement of these doorways pertains to the forces exerted by the moving doorway through all aspects of the opening and closing cycle.

Some of the very low energy doorway systems are strictly power assisted doorway openers. In their most basic form, these doors use motor controls to push or pull open a doorway. After reaching the fully opened position a basic timer will keep the door open for a specific set time. This allows a person in a wheel chair access without having to push or pull open the doorway in front of their path of travel. When the timer has counted down, the doorway will close, and cannot be reactivated to reopen without another push of the button.

Every very low electrical power door system must operate slowly and with minimal force upon impact or resistance. A properly adjusted lower electrical power doorway will stop, stall, or reverse when an obstruction is encountered during its operations.

The more complex or sophisticated the lower electricity doorway control, the more potential features will be available. Some possible options include a power assisted feature that will sense the force exerted by a user and activate the doorway motor control to take over the opening effort. A feature called “Push and Go” is often available which performs this type of function. There are also obstruction reactive elements that will stop, reverse or recycle the opener that may be included in the motor control command options.

According to specific industry wide safety standards, no optical sensor or proximity sensor of any kind is required on any lower electrical power door system that is operated by a push of a button known as a “Knowing Act”. For this reason, these types of doorways are practical for small volume traffic. They are safe when used appropriately and regularly tested for proper force and speed when moving. These doors can be problematic when installed in place of a more costly large vitality, fully automated doorway.

Daily inspections of all reduced electricity doorway systems is an industry wide requirement. Most manufacturers provide signage and stickers that are positioned on door frames instructing the manager of any facility that the observation of these doorways is needed routinely. In an effort to improve the small electricity products, retrofitted sensors and threshold protective devices used on fully automated superior electricity doorway systems have been installed on small electricity doors. This has become an industry wide practice that is acceptable. The sensors are often placed on these small electrical power openers to keep a “tailgating” pedestrian from being hit by a closing door that has “timed out” after the first user has passed through the doorway. When actual pedestrian traffic counts exceeds the original expectations of the architect or designer, it is a good idea to replace the low strength doorway system with a fully automatic higher power doorway.

Higher Energy Doors

High electricity door systems are available in many different configurations. Swingers, sliders, revolving, bi-parting, and telescoping are the most prevalent types in usage today. Their application and installation are dictated by design choices, weather requirements and location parameters. These doorways differ from lower energy doorway systems in the way that the doorway operates and the force and speed that the doorways possess when moving.

In general, automated doorway systems have an approach sensor, a threshold protection sensor and an egress sensor. The complexity of the automated door system dictates the level of sophistication of the entire doorway component control and sensor package. As discussed in previous automatic doorway articles, specific requirements of different automatic door systems govern the types and locations of door sensors and safety devices.

The one consistent requirement of every automated doorway system is the need to perform daily safety inspections. Industry wide accepted standards have been adopted to help maintain the safety of all users of all pedestrian doorways. In the most general sense, no properly maintained and functioning automated door should ever hit a user of that doorway.

Industry standards stating the importance of daily safety checks and component inspections are normally positioned on warning labels provided by the product manufacture adjacent to the door control activation panels. The proper methods of determining the correct functions and operations of the doorway are listed along with test procedures and instructions to seek professional service assistance if any of the safety devices fail to work as described. There is usually a warning to discontinue the usage of the doorway until all safety features function consistently and properly.