After the electric valve is opened to its full position and closed to its full position
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Should the changeover switch be set to the middle position to cut off the power supply after the electric valve has been opened or closed fully?
What switch? Inside the electric valve, it’s a travel switch, right?
Use a knob switch to control the electric valve on-site for three operations: open, stop, and close. Stopping means cutting off power, while opening means the motor rotates in the forward direction. For example, when the switch is turned on, the limit switch activates once it reaches its position; is it still necessary to turn the switch off by moving it to the stop position?
Once it’s in place, there’s no need to worry about it; that rotary switch has a reset function
Electric valves from different manufacturers have different operating procedures, and the operation signal can be either pulse-type or a continuous signal; it’s best to check the manual for specific details.
The switch is used to activate or deactivate the AC contactor; when the knob is set to STOP, it prevents any control over the operation of the AC contactor
No, electric valves usually have two knobs on-site: 1. Switch (local, remote, stop)； 2. Control switch (on, off): A toggle switch usually has three indicators: local operation, remote operation, and stop (which disables the remote and control knobs) ； The limit switch that indicates when the position is reached is connected in series with the motor’s power supply; once this limit switch activates, the motor’s power supply is switched off by it. The control switch is usually rotated to the remote position, after which all further operations are controlled via a computer.