Solenoid operated Directional contr

[Manojkumarg]

Solenoid operated Directional control valve is not operating when we changeover pump, then we operate it manually 3 or 4 times after that all dcv operates normally
What is the problem

 

[hydtools]

Just a wild guess, a loose or broken electrical connection.

Ted

 

[Manojkumarg]

We are facing these problem from 1 year,all DCV replaced with new one but same problem found.

This happen only after pump changeover

 

[zeusfaber]

Does it have a pilot stage? If so, where does the pilot pressure come from?

A.

 

[Manojkumarg]

No pilot stage.