51
ED50
01-2020
DL4615-001
dormakaba ED50 Installation Instructions – Fine cover
Chapter 13
1
13.6 Set ED50 operator spring tension
13.6.2 Operator spring tension function.
1. Spring tension sets closing force on door.
2. Required spring tension is based on door width.
13.6.3 Spring tension adjustment.
1. Spring tension adjustment is factory set fully CCW,
no spring tension.
2. Spring must be pretensioned per Para. 13.6.1.
• Use 5 mm T-handle hex key (Fig. 13.6.2).
Clockwise - increases spring tension.
Counterclockwise - decreases spring tension.
CAUTION
A minimum of ten spring tension revolutions
are required to operate system.
CAUTION
Any change to spring tension setting requires a
new learning cycle (Chapter 19)!
Fig. 13.6.1 Spring tension adjustment
Door
width
Inches
28
32
36
42
48
mm
711
813
914
1067
1219
Spring
setting
revolutions
ED50
10
10
14
16
18
13.6.1 Spring tension setting revolutions
TIPS AND RECOMMENDATIONS
System checks spring tension during learning
cycle (Chapter 19).
Learning cycle will be canceled if spring is
insufficiently tensioned; door will stop and
display will show a rotating "0" and an "F".
13.6.4 Check door closing force
1. Para. 13.6.1 lists approximate spring tension settings.
2. Use pressure gauge to check door closing force at 2°
and adjust tension setting if necessary.
Fig. 13.6.3 Door pressure gauge
TIPS AND RECOMMENDATIONS
Reference Chapter 25, ANSI/BHMA standards
for door closing forces.
1
Spring tension
adjustment
Fig. 13.6.2 5 mm T-handle hex key
