1004935-US-1.0 Issue 2008-11-13 37
12.1 Closing torque
To comply with authority requirements or to overcome over/under pressure, the clos-
ing torque can be adjusted.
The closing torque (spring force) is adjusted by means of an Allen screw placed at the
end of the spring tube. Turning the screw clockwise increases the force. One turn
equals a torque change of approx. 0.7 lbf·ft (28 turns from min. to max. The door
must be in the open position when extremely low torque is adjusted.
12.2 Opening torque
If the closing torque (spring force) has been changed, or if the door does not open to
its full extent, the opening torque (pump pressure) must be adjusted as follows:
A. The factory set torque for PUSH/SAS is 52 lbf·ft and for PULL 30 lbf·ft at a door
opening angle of 0 to 2°.
B. Measure the opening torque by using a spring balance and adjust if necessary.
The torque is adjusted by means of an Allen Screw placed on the pump. Turning
clockwise increases the opening torque/pump pressure. One turn equals a torque
change of approx. 22 lbf·ft.
PUSH = 52 lbf
.
ft
PULL = 30 lbf
.
ft
PUSH = 26 lbf
.
ft
PULL = 15 lbf
.
ft
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