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90°
MANUAL OVERRIDE OPERATION
Wiring Requirements
CHECKOUT
12
0°
180°
Figure-13 Unacceptable Mounting Orientation
When necessary, the actuator's output shaft can be repositioned using the manual override
mechanism as follows:
1. Disconnect power from the actuator. The actuator will fully retract.
2. Without pushing down on the crank, crank the manual override counterclockwise until
the actuator extends to the desired position. Push in until the mechanism locks in
position. (The manual override lock will release the next time power is applied.)
3. If you desire to reposition the actuator manually from a locked position, turn the crank
1/8 turn counterclockwise and pull out to release. Adjust position as desired.
Caution:
•
Only use manual override when the actuator drive motor is not powered.
•
Engaging the manual override when the actuator is powered may cause damage to the
gears.
•
Using power tools to adjust the override will cause damage to the gears.
Control Leads
See Table-2 for power wiring data. Refer to Figure-1 through Figure-7 for typical wiring.
Table-2 Power Wiring
Actuator
Part Number
Voltage
MA51-7103
24 Vac
MF51-7103
20-30 Vdc
MS51-7103
After the entire system has been installed and the actuator has been powered up, the
following check can be made for proper system operation. Check for correct operation of the
valve while actuator is being stroked.
1. Apply power to the actuator. Actuator and valve should be driven to their powered position
© Copyright 2004 Invensys Building Systems, Inc. All rights reserved.
90°
Maximum Wire Run in ft. (m)
12 AWG 14 AWG 16 AWG 18 AWG 20 AWG 22 AWG
1678
1055
664
(512)
(322)
(202)
1289
810
510
(393)
(247)
(155)
1140
717
451
(348)
(219)
(137)
0°
180°
417
263
208
(127)
(80)
(63)
321
202
160
(98)
(61)
(49)
284
178
141
(86)
(54)
(43)
F-27169-3
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