77
ED50
08-2018
DL4614-140
dormakaba ED50 OHC Installation Instructions
Chapter 31
31.4 Set operator spring tension for each ED50 operator
31.4.2 Operator spring tension function.
1. Spring tension sets closing force on door.
2. Required spring tension is plated on door width.
31.4.3 Operator spring tension access.
1. Operator Spring tension adjustment is accessed
through hole in bottom of header.
31.4.4 Spring tension adjustment factory setting.
1. Spring tension adjustment is factory set fully CCW,
no spring tension.
31.4.4 Set spring tension for each ED50 operator.
1. Each ED50 spring has to be pretensioned per Para.
31.4.1.
CAUTION
A minimum of ten spring tension revolutions
are required to operate system.
Fig. 29.4.1 Spring tension adjustment, ED50 operator on LH side of header example
1
ED50 OHC header
(shown transparent)
2
ED50 operator
3
Spring tension
adjustment
4
T handle hex key,
5 mm
Door width
Inches
36
42
48
mm
914
1067
1219
Spring setting
revolutions
ED50
14
16
18
31.4.1 Spring tension setting revolutions.
CAUTION
Any change to spring tension setting requires a
new learning cycle (Chapter 32)!
TIPS AND RECOMMENDATIONS
System checks spring tension during learning
cycle (Chapter 31).
Learning cycle will be canceled if spring is
insufficiently tensioned; door will stop and
display will show a rotating "0" and an "F".
31.4.5 Check each door's closing force.
1. Para. 31.4.1 lists approximate spring tension settings.
2. Once door is installed and complete learning cycle
performed,use pressure gauge to check door closing
force at 2° and adjust tension setting if necessary.
4
5
Door pressure
gauge
Fig. 32.1.2 Door pressure gauge
TIPS AND RECOMMENDATIONS
Reference Chapter 36, ANSI/BHMA standards
for closing forces.
1
2
3
4
