70
ED900
02-2020
08125330
dormakaba ED900 Installation Instructions – Double egress door
Chapter 21
21.1 Set power fail closing speed
21 Power fail closing speed
1
Power fail closing
speed
potentiometer
2
Control board
Fig. 21.1.1 Power fail closing speed potentiometer
1
2
o
1
2
Fig. 21.1.2 Power on switch
1
Power on switch
2
Terminal board
21.1.1 Power fail closing speed
potentiometer.
• Single turn
• Factory setting: fully CCW
• CCW increases closing speed.
• CW decreases closing speed.
• 3/32" [2-3 mm] flat blade screwdriver
required for adjustment.
21.1.2 Setting door closing speed upon
power failure.
1. Turn ED900 power switch OFF.
2. Manually open door to 90° angle and let
it close.
3. If door closes in less than 5 seconds, turn
potentiometer 1/4 turn CW and retry
test.
4. Continue retrying test after
potentiometer adjustment until the door
closing time is a minimum of 5 seconds
21.1.3 Repeat setting closing speed for
second door.
NOTICE
Error message E73:
If door closes in less than three
seconds, error message
E 73
(System error 3, braking circuit) will
be displayed.
Reference: Appendix B,
Troubleshooting.
TIPS AND RECOMMENDATIONS
Minimum 5 second closing time
is
required to meet requirements of:
• A117.1, Accessible and Usable
Buildings and Facilities,
Section 404.2.7.
• 2010 ADA Standards for
Accessible Design,
Section 404.2.8.