92 Agilent 1200 Preparative Pump User Manual
6 Troubleshooting and Diagnostics
Error Messages
Seal Wash (Safety)
Seal Wash
This error message is generated, if the pressure sensor is incorectly plugged
into the connector on the main board, that should hold the seal wash motor
cable.
Wait for Encoder Position Timed Out
Encoder position was not reached within specified time.
Pressure sensor incorrectly plugged into the main board port
You risk permanent damage of the pressure sensor, if the seal wash pump is turned ON
while the pressure sensor is incorrectly connected to the main board port, dedicated
for the seal wash pump. This requires exchange of complete multi assembly.
➔ Never turn on the seal wash pump, while the pressure sensor is connected to the
main board port.
➔ Make sure the seal wash cable and the pressure sensor cable are plugged in the
correct positions before turning ON the seal wash pump.
Probable cause Suggested actions
1 Pressure sensor and seal wash pump
connector were connected to the wrong
position on the main board (identical
connectors allow to plug into the wrong
positions by mistake).
Switch the connectors of the seal wash pump
cable and the pressure sensor to meet the
correct positions (P23 for seal wash cable, P29
for the pressure sensor cable from the multi
assembly).
Probable cause Suggested actions
1 Flow too low. Recalculate flow or wait time, to allow to reach
encoder position before encoder position
time-out.
2 Pump OFF. Turn ON pump.
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