Belimo AF24-S US - Manual Override & Auxiliary Switches

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
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Installation Instructions
Mechanical Installation
Manual Override
The AF series actuators can be manually positioned to ease installation or for
emergency positioning.
1. The manual override will only work if no power is available to the actuator.
2. Insert the manual crank (shipped with the actuator) into the hexagon hole
located on either side of the actuator. An illustration, located on the label,
shows the location.
3. Turn the crank in the direction shown on the label (clockwise on the “CW”
side, counterclockwise on the “CCW” side). It will take approximately 19
revolutions to rotate the full 95° of rotation.
4. To lock the actuator in the required position, rotate the crank quickly in the
opposite direction, 1/2 of a revolution. The “lock closed” icon on the label shows
the correct direction.
5. The manual override may be disengaged in 2 ways.
- Rotate the crank about a 1/4 revolution in the same direction as the initial
winding. The “lock open” icon shows the correct direction.
- Apply power to wire 1 and 2. The actuator will automatically disengage
the override function and will go to the “on” position in the case of the
On/Off versions. Or, in the case of the proportional versions, go to the 0
signal position and then go to the position corresponding to the control
signal. The actuator will now work normally.
Winding the
damper actuator
- insert crank handle
- turn handle in
direction of arrow
Locking the
damper actuator
- rotate crank handle
1/2 turn in the
direction shown by
the “locked” icon.
Unlocking the
damper actuator
(2 options)
- rotate crank handle
1/4 turn in the
direction shown by
the “unlocked” icon.
- remote control by
supplying power to
the unit for > than 3
sec.
Testing the installation Without Power
The actuator/damper installation may be tested without power at the actuator.
Refer to the manual positioning section of the instructions. Move the damper
to its full non-fail-safe position using the manual crank. Disengage the manual
position mechanism and have the damper go to full fail-safe position. Correct
any mechanical problems and retest.
Auxiliary Switches
The AF series actuators may be ordered with 2 built-in SPDT auxiliary switches
used for safety interfacing or signalling, for example, for fan start-up. The switch
position near the fail-safe position is fixed at 5°. The other is adjustable between
25 and 85° of rotation. The crank, supplied with the actuator, or a 3mm allen
wrench is used to adjust the switching position.
SWITCH RATING
Voltage Resistive Load Inductive Load
120 VAC 7A 5A
250 VAC 7A 2.5A
Two methods may be used to adjust the switching point of the adjustable switch.
Method 1 - See Figure F
1 The actuator must be in its fail-safe position.
2. Insert the crank into the hexagon shaped hole located in the center of the
adjustable switch pointer.
3. Rotate the crank until the switch pointer is at the desired switch point in
degrees as shown.
AF... Series
30
40
50
60
70
80
25…85°
Factory setting 85°
30
40
50
60
70
80
25…85°
Rotate with
crank handle
30
40
50
60
70
80
25…85°
60° set
Crank
Handle
FIGURE F
Method 2 - See Figure G
1. Position the damper to the point at which you want the switch to activate.
This may be done by using the manual override or by providing the
appropriate proportional signal to AF24… modulating type actuator. The
position of the switch pointer is not important during this step.
2. Insert the crank into the hexagon shaped hole located in the center of the
adjustable switch pointer.
3. Rotate the switch pointer to just past the switch point indicating arrow as
shown.
AF... Series
30
40
50
60
70
80
25…85°
Actuator
after locking
30
40
50
60
70
80
25…85°
Switch operates
30
40
50
60
70
80
25…85°
Switch does
not operate
Crank Handle
FIGURE G
K20901 - 01/09 - Subject to change. © Belimo Aircontrols (USA), Inc.