DORMA AUTOMATICES, Inc. 924 Sherwood Drive Toll-Free: 877-367-6211 Subject to change without notice
DL3463-050 08/2016 Lake Bluff, IL 60044 Fax: 847-249-3999
ED100 / ED250 SERVICE MANUAL
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17
Spring setting revolutions – recorded
ED100
ED250
3
Set spring tension
When system is delivered, spring tension is relaxed.
Spring has to be pretensioned – a minimum of ten revolutions
are required to operate system.
System checks spring tension adjustment during learning cycle.
Cycle will be canceled if spring is insufficiently tensioned.
If spring tension is changed, a new learning cycle
must be performed.
Spring is adjusted at factory for fully
counterclockwise position – no spring tension.
Table I
Door width
inches 32 36 42 48 55
mm 813 914 1,067 1,219 1,397
Spring setting revolutions
ED100 10 14 16 -- --
ED250 -- -- 14 18 24
1.1 Operator spring tension – refer to Table I for required
number of full revolutions.
2.1 Adjust spring tension using a 5 mm hex T handle.
3.1 Record spring setting revolutions.
1
5 mm
Door
pressure
gauge
Spring tension
adjustment
Measure force 1”
[25 mm] from lead
edge of door
1”
[25 mm]
Table I indicates approximate values – use door
pressure gauge to check closing force at 2° and
adjust if necessary. Refer to Sections 14 and 15 for
values.
For reveal depths greater than 11 5/16" [300 mm],
also check minimum closing force between 88° and
92°.
2
12. Set spring tension
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