Troubleshooting Valve Problems

Nexera Virtual Advisor

Symptom	Cause	Solution
Pressure too high - valve inlet	Valve position is misaligned	Contact your Shimadzu representative
Pressure too high - valve inlet	Flow line blockage - valve	Clean or replace any blocked flow lines
Position buttons will not change the valve position	Local mode is not enabled	Press the Local/Remote key to enable local mode.
Leak - valve	Rotor and stator seal are worn	Replace the rotor and stator as necessary.
Leak - valve	Pressure is set too high	Set the pump PMAX to 34.3 MPa.
Leak - valve	Flow line connections are loose	Tighten or replace the male nuts and ferrules of the flow line connections.
Leak - valve	Flow line connections are faulty	Tighten or replace the male nuts and ferrules of the flow line connections.
Contact input does not move the valve position	Remote mode is not enabled	Press the Local/Remote key to enable remote mode.
Contact input does not move the valve position	Event cable is improperly connected	Connect the event cable properly.
Contact input does not move the valve position	Event cable is cut or broken	Replace the event cable.
Power will not turn ON	Power supply specifications have not been set	Use a power supply that meets the instrument specifications.
Power will not turn ON	Power cable is unplugged	Properly connect the power cable to the power supply.
Power will not turn ON	Power cable is cut or broken	Replace the power cable with a new one.
Power will not turn ON	Fuse is blown	Replace the fuses. If fuses blow out frequently, contact your Shimadzu representative.