Tonhe CR2 02 normally closed motorized valve. When the power failure how the valve close?

Our normally closed motorized valve, when power failure, Use Farah Capacitor’s power to close the valve.
It’s not spring return, please kind note it.
So when you using the motorized valve, you must charge the Farah Capacitor every time,
A20 2NM need charge >10s, A100 10NM need charge>1 minute for every time using.

In case of you haven’t charge the Farach Capacitor full , it will lead to valve can’t close completely,
just will close partly, then long time don't charge full electricy, farrah capacitor will go to bad.

CR2 02 Wiring Diagram ( 2 wires control – Power reset function)

•When SW is CLOSED, the valve OPEN, the actuator automatically power off after in place.
•When SW is OPEN, the valve CLOSED, the actuator automatically power off after in place.
﹡Suitable Working Voltage: AC/DC9-35V，AC/DC110V-230V
﹡Exceeding the working voltage is forbidden
Please Note A20 CR2 02 must need charge time >10 seconds for every time use
A100 CR2 02 must need charge time >1 minute for every time use