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Appendix B: Calibrating and troubleshooting actuators
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Appendix B: Calibrating and troubleshooting actuators
Calibrating actuators
After configuring the actuator relays, you need to calibrate the actuators. Calibrating the actuator lets
the control know the position of the actuator when it is fully extended and fully retracted. The
control uses the limits to define the range of motion it uses to position the inlets. These limits tell
the control how much to adjust when you want the actuators, for example, only 25% extended.
Because cables can stretch and equipment can come out of alignment (similar to tires on your car),
we recommend resetting the limit switches and calibrating your actuators at least once each year.
During calibration, the actuator opens, pauses, and then closes. If the actuator is operating properly,
the inlet should open completely and then close completely. After closing completely, the actuators
should position according to the temperature and default settings.
Before calibrating actuators, make sure the limit switches are set and the cable
and counter weights can move freely.
If the calibration procedure stops after closing the first time, or fails to position
properly, the feedback signal is not connected properly. Verify that the
potentiometer wiring is correct. For more information, read
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