Patent ID: 11913480
Assignee: DANFOSS A/S
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 9:
10. A method for determining a functional state of an isolation valve assembly, the method comprising the steps of:
(a) providing an isolation valve assembly in a hydraulic circuit that is movable between a first position in which fluid flow between a metering valve and an actuator is enabled and a second position in which fluid flow between the metering valve and the actuator is blocked;
(b) initiating an operation verification routine for the isolation valve assembly;
(c) reading a first diagnostic pressure value with the isolation valve assembly in the first position;
(d) moving the isolation valve assembly to the second position;
(e) reading a second diagnostic pressure value with the isolation valve assembly in the second position; and
(f) determining whether the isolation valve assembly is functional by comparing the first diagnostic pressure value to the second diagnostic pressure value.