© 2005, The STANLEY WORKS. ALL RIGHTS RESERVED.
203936 Rev. C
MA900 Installation Manual
21
Dip Switches
Fig. 30
Dip switches
Four operating features are controlled by dip switches (see Fig.
30). A dip switch has two positions, up (A) and down (B). Use a
small screwdriver or a pencil point to set the dip switches.
From left to right these are:
1.
Lock Delay:
Delays the operation of the door 1/2 sec to
allow a lock to release.
2.
Power Close:
Used to assist door closing when stack pressure
exerts an outward or inward force that keeps the door from
closing fully.
3.
Magic-Touch™:
Allows the door to be actuated by a slight
movement of the door.
4.
Power Close Cancel:
Turns off Power Close after a
specified time.
The features are:
1. A Lock Delay is Off
B Lock Delay is On
2. A Power Close is Off
B Power Close is On
3. A Magic-Touch™ is On
B Magic-Touch™ is Off
4. A Power Close Cancel is Off
B Power Close Cancel is On
While Power Close is active, the LED indicator is
on, and the Magic-Touch™ feature is inactive.
Fig. 31
Power Close potentiometers
The Power Close feature is controlled by three potentiometers
(see Fig. 31):
1.
TD3 Enable Time Delay:
Controls the time between the start of
the door close to the actuation of Power Close. This time must
be set so that Power Close is actuated when the door is
approximately one inch from fully closed. Turn the potentio-
meter cw to increase, ccw to decrease, the time delay.
2.
TD4 Cancel Time Delay:
Controls the time for which Power
Close remains active. Turn the potentiometer cw to increase,
ccw to decrease, the time.
3.
LVL Power Close Force:
Controls the amount of force applied
by the Power Close feature. Turn the potentiometer cw to
increase, ccw to decrease, the Power Close force.
★
Summary of Contents for MA900n
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