Issue
MD5B, MD10B, MD20B and MD40B Increase / Decrease Actuator is required to be controlled by means of ON/OFF CONTACT ( S.P.S.T.) Control Device instead of CHANGEOVER CONTACT ( S.P.D.T.) Control Device.
Environment
MD5B Increase / Decrease Actuator installed on a Damper and wired to a ON/OFF CONTACT ( S.P.S.T.) Control Device.
MD10B Increase / Decrease Actuator installed on a Damper or Valve Body and wired to a ON/OFF CONTACT ( S.P.S.T.) Control Device.
MD20B Increase / Decrease Actuator installed on a Damper or Valve Body and wired to a ON/OFF CONTACT ( S.P.S.T.) Control Device.
MD40B Increase / Decrease Actuator in stalled on a Damper and wired to a ON/OFF CONTACT ( S.P.S.T.) Control Device.
Cause
MD5B, MD10B, MD20B and MD40B Increase / Decrease Actuator is required to be controlled by means of ON/OFF CONTACT ( S.P.S.T.)Control Device instead of CHANGEOVER CONTACT ( S.P.D.T.) Control Device.
Resolution
Wire MD5B, as indicated in On/Off control wiring diagrams on Data Sheet shown here.
Wire MD10B as indicated in On/Off control wiring diagrams on Data Sheet shown here.
Wire MD20B as indicated in On/Off control wiring diagrams on Data Sheet shown here.
Wire MD40B as indicated in On/Off control wiring diagram on Data Sheet shown here.
