I joined the automatic door division of Stanley - Access Technologies in 1997 and held the roles of national training manager, E-business manager, and product manager over a 10-year time span.
Can you provide us with some background of the ADA EZ?
Our goal was to open up door automation to more end users by eliminating the need for electrical power. We were able to ride on the electric car battery technology to harness the energy from a door being opened and closed. Like stepping on the brakes of an electric car, the momentum is converted to electric energy and returned to the battery. It is that energy which we store and release as needed to help an individual gain access to the facility. The ADA EZ being door mounted, easy to install, and auto-tuning makes it an ideal product for the locksmith.
Why is ADA EZ good for locksmiths?
Because it is ideal for retrofit applications. The ADA EZ typically does not require electrical power, eliminating the need for permits, conduit, coordination with electrical trade, and low voltage licensing. The unit mounts like a typical door closer with an approximate 30-minute installation time. ADA EZ automatically calculates the door size and weight then adjusts itself for ANSI compliance.
What is the 80/20 rule?
The ADA EZ should be applied to doors using our 80/20 guideline:
Apply ADA EZ to a door that gets approximately 80 manual cycles or more per day and is used 20 percent or less automatically. When applied using the 80/20 guideline the ADA EZ will self generate all the power it needs to keep its field replaceable, onboard, battery pack charged for up to 12 years and in some cases longer.
A fully charged battery has the capability to open a door up to 2000 times in a row, generously allowing for periodic fluctuations from 80/20 guidelines with little impact on the product’s overall usability. For example 25 percent automatic use for one day is not a problem, so long as that level of automatic use is not sustained.
What if the door does not meet the 80/20 guideline?
The ADA EZ can be used outside of the 80/20 parameters. Simply plug the unit into a common 110 VAC electrical outlet using our HDWR option. The HDWR option is a low voltage plug in transformer and can be added to existing installed field units. The battery can also be recharged using a common battery charger we sell as an option. Depending on the ratio of automatic/manual use, the battery can last for years before needing to be recharged.
How does the installer determine the ratio of use?
Experience is the most effective learning tool. Low energy automatic door openers are designed for use by the physically challenged. The door opens very slowly. Most traffic simply does not want to wait for the door to open opting to just push the door open and walk through. Our field studies revealed that in most cases the ratio of automatic to manual use is very low – less than 10 percent.
The installer can reduce the misuse of the low energy door by the placement of the RF pushbuttons. The code says within 12 feet of the door. So place the buttons where they are convenient for the physically challenged individual but out of the way of typical traffic.
The building owner will be happy as well since the hold open time is required to be a minimum of five seconds when powered operated wasting valuable heating or cooling energy.
Also resist the requests by the building owner to speed up the door opening speed. Low energy doors open slowly for a reason – safety. I’ve seen bollards with the activate switch installed 15 feet away from the door so that typical traffic doesn’t have to break stride – the door is open by the time they get there. In those applications use the HDWR option.
What settings and adjustments are performed by the installer?
After installing the unit per the instructions, the installer defines the door closed position and the door open position using the buttons on the circuit board. ADA EZ calculates the door size and weight then tunes itself to ANSI guidelines.