MCP-1040/1140 Series 2 Installation Guide
Connections
NOTE: Use 1/4" (6 mm) O.D. FR polyethylene
tubing and only clean, dry control air.
NOTE: Models ordered with CMC-1001 positioners
are factory-piped between the positioner
and the actuator.
NOTE: If the application requires operation near
the maximum temperature and maximum
pressure, add a tubing restraint to the
actuator connection.
1. Connect the input control signal to the actuator
port (if no positioner is used) or to the positioner
(CMC-1001 input) Port 2 (see the diagram).
2. Connect the main air (20 psi) to the positioner
(CMC-1001 center) port.
3. If a positioner is not factory-piped to the actuator,
connect the actuator input port to positioner
(CMC-1001 output) Port 1.
4. Slowly apply supply pressure to fully stroke the
actuator and linkage.
5. Check for any binding. Fine tuning can be
accomplished by adjusting the balljoint on the
pushrod.
© 2017 KMC Controls, Inc. 010-019-01B
KMC Controls, Inc.
19476 Industrial Drive
New Paris, IN 46553
574.831.5250
Adjustments and Calibration
DANGER
The actuator contains a large powerful spring.
Exercise extreme caution if disassembly is required.
The actuator shaft MUST be restrained to prevent
the spring from expanding.
Actuators with positioners contain an 8–13 psi
spring. A positioner allows the unit to operate over
any 5 psi span with the start-point adjustable from
3–10 psi. Replace the 5 psi spring with a 10 psi spring
to widen the span.
To change the positioner start-point:
1. Apply the desired signal pressure.
2. Rotate the start-point adjuster until the actuator
starts to stroke.
Important Notices
The material in this document is for information pur-
poses only. The contents and the product it describes
are subject to change without notice. KMC Controls,
Inc. makes no representations or warranties with respect
to this document. In no event shall KMC Controls, Inc.
be liable for any damages, direct or incidental, arising
out of or related to the use of this document.
Maintenance
No routine maintenance is required. However,
care should be taken during any installation or
maintenance due to the power of the actuator. Each
component is designed for dependable, long-term
reliability, and performance. Careful installation will
also ensure long-term reliability and performance.
More Information
For specications and other information about the
actuators, see the MCP-1040/1140/04xx Series Data
Sheet on the KMC web site. For information about
the positioner, see the CMC-1001 Data Sheet.
5. Loosely mount the actuator externally on the duct
or air handling unit.
6. Leave sucient room for adjusting and servicing
the unit.
7. Position the damper for its “normal” position.
8. Tighten the crank arm set screws.
9. Check that the linkage will not bind as the shaft
extends and retracts.
10. Firmly anchor the bracket to the duct. The
actuator assembly is positioned for 90° rotation.
