Agilent IDP-3 Mode D'emploi page 173

Technical Information
Troubleshooting
Use the Troubleshooting chart (Table 8) to assist in defining a problem, determining
a possible cause, and defining action steps to remedy the situation.
Table 8 Troubleshooting Chart
Problem
Will not start
Poor ultimate pressure
Hammering noise
Pump runs intermittently
* The IDP-3 is equipped with an auto-reset thermal motor protector. This protector
will automatically shut down the pump when it detects an overload condition,
and will automatically restart the pump when the motor has cooled to within an
acceptable temperature range.
.
Possible Causes
Motor thermal protector open
Excessive voltage drop
Defective motor
System leak
Water vapour in pump or system
Gas ballast plugged
Solvent in pump
Worn tip seal
Poor conductance to pump
Pump overheated
Debris in pump
Motor thermal protector is cycling
open and closed. *
Corrective Actions
Allow motor to cool. Identify cause of
overload.
Check size and length of cable.
Inspect. Contact Agilent.
Locate and repair leak.
Flush pump with air or dry nitrogen.
Replace breather vent. Contact Agilent.
Flush pump with air or dry nitrogen.
Install trap or filter.
Replace tipseals.
Replumb with shorter and/or larger
diameter tubing.
Check ventilation to pump.
Check ambient temperature.
Check intake screen. Flush pump.
Flush pump.
Disassemble pump and inspect.
Allow the motor to cool.
Identify the cause of the overload.
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