|PUMP START||PUMP STOP|
|Pump||: Pressing the pump’s start button.||Pump||: Pressing the pump’s stop button|
|Actuator||: Opens to 10% flow position.||Actuator||: Closes to a fully closed position.|
|LS1||: Actuator’s N 1 limit switch stops the actuator
and signals to the pump’s motor to start.
|LS1||: Actuator’s N 1 limit switch trips the
motor when the valve reachesthe 10% flow position.
|Pump||: Starts||Pump||: Stops|
|TS1||: Actuator’s N 1 timer switch delays
the actuator for 10-20 minute to
enable the charge of an empty or
partial emptyn column without the
danger of tripping the pump on excess
|LT1||: Actuator’s N 1 torque limit stops
|LS3||: Actuator’s N 3 limit switch is used as
an indicator for the fully closed valve position.
|Note! Failing to reach 10% flow position will prevent the starting of the pump.||Note! Failing to reach fully closed position is reported to the pump operator.|
|VALVE OPENING||SETTING VALVE SPEED|
|Pump||: Running.||The electrical actuator is programmed to set the
opening and closing speed of the valve. It is
recommended to set the closing opening time
to ±40 seconds.SETTING THE LIMIT SWITCH
While the pump is running open the valve to a flow
rate of ±10% of the pump’s nominal flow rate, as
indicated by an external flow meter or the pump’s
current. While the valve is in the above position set the limit switch LS1 to the correct position.
|TS1||: Actuator’s N 1 timer switch finishes the delay period.|
|Actuator||: Continue to open the valve to the fully opened position.|
|LS2||: Actuator’s N 2 limit switch stops the actuator and signals a fully opened valve position.|