ED800-T Door Operator

Mounts on the PULL side of the door frame (see images).

The ED800 is called a Low Energy door operator because the voltage is transformed from 120 volt AC to low voltage DC.  It is the low voltage DC the powers the motor.  This low voltage can also be connected to a power supply or other electronic hardware associated with the door.

Manufacturer's Description:

The ANSI A156.19 DORMA ED800 is a surface closer based low energy power operator that precisely senses the door environment and responds appropriately. The ED800 is designed for manual openings that occasionally require automatic opening.

The Americans with Disabilities Act (ADA) heightened awareness that doors present barriers to individuals with physical challenges. A major concern of door closer manufacturers is how to make doors easy to open while providing sufficient closing force. Interior doors pose a few problems, while exterior doors are exposed to a much wider array of forces. Closers with adjustable spring power can help, but cannot guarantee compliance, when
the adjustment must be increased in order to close the door.

DORMA has solved these problems with the ED800. It fulfills the need for constant reliable closing control of doors while providing the power to open them as needed for the physically challenged.

Manufacturer's Specification:

DORMA ED800 Series low energy operators with selectable low energy or power assist. Low energy function to cycle the door open as prescribed by the four user adjustments. Power assist function to require manual opening with an adjustable force between 1/2 lbf and 5 lbf. All operators to have push & go feature to activate low energy or power assist with the door. All operators to have door closer function when low energy or power
assist is not required. Door closer to have adjustable spring size, valve adjustable sweep speed, latch speed, and backcheck cushioning.

All operators to have the following user adjustments for power open functions: delay time, opening time/opening force, opening angle, and door width selector.  Operators to have selectable slide switch to accommodate push or pull side applications. Operators to have on/off strike delay
switch when the ED800 must delay while a locking device releases. Push side (top jamb) and pull side (track) arms to be available. Operators to have vestibule function for sequencing operation of two units. Operators to have a selectable five minute hold open. All operators will be hard wired.

Operation

The ED800 is simple to install. It is a “low energy” operator and does not require external safety devices. The opening speeds and forces are tailored to meet the needs of the physically challenged.  Opening force never exceeds 15 lbf. Closing time is never less than 3 seconds from 90º
to 10º, nor less than 1.5 seconds from 10º to closed.  DORMA has achieved a technological breakthrough . . . an intelligent door closer, designed  solely to provide safe, barrier free access.

The ED800 goes well beyond basic requirements to assure complete user safety.  The on-board microprocessor is the brain center. It completes
an initial learning cycle at the first application of power. The learning cycle communicates information about the mounting and closing force to the microprocessor. It continuously monitors door position, pushing force, resistance, wind/draft conditions, opening and closing speeds and other variables.  It will detect even the slightest deviation from the programmed norm and respond immediately.  The operating system is continuously
checked for system malfunctions to enhance the safety and reliability of the unit.

The microprocessor incorporates three slide selector switches and four user adjustments: delay time, opening angle, opening time/opening force, and door width.  The push and go slide selector switch is used to activate or deactivate the push and go feature. The door functions as an actuator
when the switch is on.

The power assist/low energy switch selects the operational mode of the ED800.  The power assist function results in the door opening approximately one inch. The door can then be opened with a reduced force. In the low energy mode, the door will cycle to the open position as
prescribed by the four user adjustments.

The strike delay switch is used to activate or deactivate a delay of the ED800 operation.  When on, it allows time for operation of the locking device
controlled by the form “C” contacts.  The delay time is the amount of time the door waits before closing from maximum opening or when the door
detects an obstacle. Delay time is adjustable from 5 seconds to 60 seconds.