FlowCon FH / FH-BUS / FH.1 Actuators 1B95036 - 06/2023 Override For FH, manual override is performed after power supply is turned off. Lift the silicone cap on the top of the actuator to get access to manual over- ride. Manual override is performed by a 4 mm (~5/32”) hex key. Clockwise turning will open the valve and counter-clockwise turning will close the valve. For FH.1 electrical override is activated by mov- ing DIP switch #6 from OFF to ON. Then the valve will open fully. During override mode the LED indicator will blink red and green. When DIP switch #6 is moved back to OFF, the actuator will re-calibrate and thereafter go into normal opera- tion mode. Electrical override is performed with power supply on. When performing the manual override procedure on the FH-BUS, set DIP switches 1 to 6 to OFF and the spindle will fully retract, and the LED will rapidly blink green. In this state the valve can be manually close or opened using a magnet. To extend actuator spindle and fully close the valve, briefly swipe the magnet along the right- hand side of the actuator (top view and wires downwards). LED indicator is blinking yellow during this ‘manual spindle adjustment’ mode. To retract the actuator spindle and open the valve fully (mounting position), again briefly swipe the magnet along the right-hand side of the actuator. LED is blinking rapidly green to indicate ‘mount- ing position’ mode. Manual override can be re- peated as often as necessary. Failsafe Mode (FlowCon FH.1) When power is lost, the actuator will go into fail- safe mode after a few seconds, mandatory that capacitor charging and start-up sequence are completed. The actuator will perform failsafe ac- tion (open or close) and stay in failsafe final posi- tion until return of power. Upon power, the actua- tor remains in the final failsafe position until charg- ing mode is reached (max. 215 sec). Hereafter the actuator will return to normal operation mode. Flush Mode (FH-BUS) The automatic Flush Mode is activated and cycle time configured via the bus (Modbus reg- ister 132 and BACnet AV.35; 0= not activated). In Flush Mode, the valve is temporarily fully opened independent of the control signal to al- low easy system flushing. This paper is a supplement to the FlowCon General Instruction Latest release of any FlowCon material is available on www.flowcon.com Page 3 of 8
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