Servomex DF-310E, Руководство оператора

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100 DF-310E Troubleshooting and Calibration
M) Ensure that the sensor polarization voltage is turned on. See page 66.
N) Enter the Diagnostics menu and verify that the temperature is between 0° and 45°C. If
temperature indicates erroneously high, check for good contact at the red and black wires on the
sensor harness connector (for Analyzers having the sensor in the cabinet), or at all remote wiring
connection point (starting at rear panel connector J11 pins 1 and 2) for remote sensors. Also, in
remote sensor applications, verify that the temperature sensor wires are not reversed.
Note: The sensor temperature reading is only updated when entering the Diagnostics
menu. After checking wiring connections leave the Diagnostics menu, wait one minute, and
enter the menu again. The temperature value will be new, and should now be correct.
O) Confirm that the power supply is turned on, operating at the proper voltage and is
connected properly to the analyzer.
P) Add Hummingbird Replenishment Solution if electrolyte level is near or below “MIN”
mark.
Q)
Check the sensor wiring. Make sure the nuts holding the wires to the sensor have not
come loose. Trace the wires from the sensor back to the sensor connector. Make sure that the
terminal pins are seated correctly in the connector plugs and are making good contact through
the connector. Trace the wires further back to the main PCB connector. Make sure the wires are
crimped correctly and none have broken loose.
R) Check the accuracy and age of the calibration reference cylinder. Trace O
2
standards in
steel cylinders decay over time due to oxidation of the cylinder walls. Standards below 100 ppm,
in steel cylinders, should be re-analyzed or calibrated every three months. Ideally, standards
below 100 ppm, and certainly standards below 10 ppm, should be prepared in aluminum
cylinders.
Z) Contact the local Servomex Business Center For faster service, have the instrument serial
number and model number in hand before calling. Always be certain to drain the sensor of
electrolyte before returning it to the factory for repair.
9.4.3 Fuse Replacement
DANGER
The instrument power must be shut off before removing the fuse.
Failure to do so may expose the operator to hazardous voltages.
The operating voltage of the analyzer is marked on a label located on the rear of the cabinet.
Always use the proper fuse for the operating voltage of the analyzer.