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Troubleshooting and Test Functions
Wait Timeout
Wait Timeout
When running certain tests in the diagnostics mode or other special
applications, the pump must wait for the plungers to reach a specific
position, or must wait for a certain pressure or flow to be reached. Each
action or state must be completed within the timeout period, otherwise the
error message is generated.
Possible Reasons for a
Wait Timeout
• Pressure not reached.
• Pump channel A did not reach the delivery phase.
• Pump channel B did not reach the delivery phase.
• Pump channel A did not reach the take-in phase.
• Pump channel B did not reach the take-in phase.
• Solvent volume not delivered within the specified time.
Probable Causes • Purge valve still open.
• Leak at fittings, purge valve, active inlet valve, outlet ball valve or plunger
seals.
• Flow changed after starting test.
• Defective pump drive assembly.
Suggested Actions ❏ Ensure that purge valve is closed.
❏ 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, plunger seal).
❏ Ensure correct operating condition for the special application in use.
❏ Exchange the defective pump drive assembly.