1260 Infinity II Flexible Pump User Manual 159
8Maintenance
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 Open-end wrench 1/4 — 5/16 inch
Parts required p/n Description
5067-6791 Pressure sensor 1300 bar
5067-7010 Pressure sensor Bio-Compatible 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 adapter of the
secondary pump head, respectively.
2 Remove the screws that fix the pressure sensor to the
chassis.
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