Agilent Technologies Quaternary Pump 1100 Series - Manual (Page 63)

63
Troubleshooting and Test Functions
Pressure Signal Missing
Pressure Signal Missing
The pressure signal from the damper is missing.
The pressure signal from the damper must be within a specific voltage range.
If the pressure signal is missing, the processor detects a voltage of
approximately -120mV across the damper connector.
Probable Causes • Damper disconnected.
• Defective damper.
Suggested Actions ❏ Ensure the damper is connected correctly to the LPM board.
❏ Exchange the damper.