Agilent Technologies Quaternary Pump 1100 Series - Manual (Page 58)

58
Troubleshooting and Test Functions
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The top foam has been removed.
The sensor on the LPM board detects when the top foam is in place. If the
foam is removed, the fan is switched off, and the error message is generated.
Probable Causes • The top foam was removed during operation.
• Foam not activating the sensor.
• Sensor defective.
• Rear of the module is exposed to strong direct sunlight.
Suggested Actions ❏ Replace the top foam.
❏ Exchange the LPM board.
❏ Ensure that the rear of module is not directly exposed to strong sunlight.