88 Agilent 1290 Infinity II Flexible Pump User Manual
7 Maintenance
Replace the Pressure Sensor
Replace the Pressure Sensor
When No or invalid pressure signal
Tools required p/n Description
8710-2412 Hex key 2.5 mm, 15 cm long, straight handle
8710-0510 Wrench open 1/4 — 5/16 inch
Screwdriver
Parts required p/n Description
G7104-60001 Pressure sensor 1300 bar
Preparations Turn off pump flow, switch off pump
This procedure describes how to replace the pressure sensor.
In case the cable to the sensor shall be replaced as well, please contact your Agilent
service representative.
Working on connections to the pressure sensor may slightly change the displayed
pressure. In case of a pressure offset at ambient pressure, a pressure offset calibration may
be run.
1
Remove capillary connections between the pressure
sensor and the High Pressure Filter, and between the
pressure sensor and the outlet filter of the secondary
pump head, respectively.
2 Remove the screws that fix the pressure sensor to the
chassis.
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