Agilent Technologies 1100 Series Water Pump User Manual


 
52
Troubleshooting and Test Functions
Leak
Leak
A leak was detected in the quaternary pump.
The signals from the two temperature sensors (leak sensor and
board-mounted temperature-compensation sensor) are used by the leak
algorithm to determine whether a leak is present. When a leak occurs, the
leak sensor is cooled by the solvent. This changes the resistance of the leak
sensor which is sensed by the leak-sensor circuit on the LPM board
Probable Causes Loose fittings.
Broken capillary.
Loose or leaking purge valve, active inlet valve, or outlet ball valve.
Defective pump seals.
Suggested Actions Ensure all fittings are tight.
Exchange defective capillaries.
Ensure pump components are seated correctly. If there are still signs of a
leak, exchange the appropriate seal (purge valve, active inlet valve, outlet
ball valve).
Exchange the pump seals.