Pure water equipment RO reverse osmosis water inlet valve closed, RO water pump still work how to do?

The RO water inlet valve of the water purification equipment is used to control the reverse osmosis system of water intake control components, once the valve is closed, the automatic control system will command the RO pump automatically stop working, if there is a failure, then there may be a valve has been closed, but the pump is still working, for this case, it may be due to the following reasons:

①: water purification equipment, high and low pressure switch damage, resulting in the protector can not work

②: improper adjustment of the pressure protection switch, may not be able to reach the protector still work.

②: pressure protection switch improperly adjusted, may not be able to achieve the minimum protection pressure protector

Parts of the pressure of the irrational design may also be the cause of this situation, it depends on the original design of the equipment program book, our company in Dongguan this side of the town of Qishi, convenient, to see your side of the situation