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1) Adjusting the Closing
Force on the Spring
Rope Pulley
Tensioning screw of
Ill. 5
the spring rope pulley
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D) Adjusting the Closing Force and Speed
Open the door completely (max. opening 1.5 m) - there must re-main
min. 1.5 loops of rope on the spring rope pulley. The spring is tensioned
with the tensioning screw SW17 that is accessible from both sides. The
correct sense for the tensioning is indicated by the red arrows "Spannen"
(see ill. 5). Maximum pretension: depending on the type of the spring
rope pulley (see table below)!
Reducing the pretension: if the spring rope pulley has been tensioned
too much, the pretension can be reduced by turning the tensioning screw
against the direction of the arrows.
Force needed for tensioning/detensioning the spring:
25 N: about 12 Nm, 50 N: about 15 Nm, 80 N: about 17 Nm
25 N
Travel
Rev.
1800 mm
0.5
1650 mm
1
1350 mm
2
1050 mm
3
700 mm
4
400 mm
5
The diagram (ill. 6) indicates the closing force of the spring in relation
to the pretension and the door width.
Remaining travel
2,00 1,80 1,65
1,35
1,65 1,50 1,35
1,05
1,15 1,00 0,85
0,55
100
90
80
70
60
50
40
30
20
10
0
0
0,5
1
Pretension/ Revolutions
50 N
Travel
Rev.
1500 mm
0.5
1350 mm
1
1050 mm
2
730 mm
3
400 mm
4
1,05
0,70
0,70
0,40
0,25
0
80 N
80 N
2
3
4
Technical Manual
DICTAMAT 50 KW
80 N
Travel
Rev.
1000 mm
0.5
850 mm
1
550 mm
2
0,40
0,10 0
25 N
0,10 0
50 N
50 N
25 N
5
6
6, ,5
Ill. 6
Page 02.057.05
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