GEA Omni, Instruction Manual

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5.3.1 Compressor Capacity Slide Input Calibration with External Oil Pump
1. Ensure that the control panel is in Service Mode and the compressor is Stopped .
2. Touch the Capacity Slide Position entry in the Sensor Calibration display to bring up the calibration pad.
3. Touch the OIL PUMP button. The indicator on the right edge of the button will be illuminated green to
indicate that the oil pump is running. This step may be skipped for Vilter compressors.
4. Touch the UNLOAD button. Wait until the slide valve reaches the fully unloaded position, at which point
the value in the Raw Signal column should stabilize. The value that the signal will stabilize to is deter-
mined by the type of sensor being used.
Hint!
Certain Compressors will use reverse acting capacity sensors, which will stabilize to a
high value at the low offset.
5. Touch the Save Low Offset button. The corresponding slide valve position sensor output has been
recorded as the fully unloaded position.
6. Touch the LOAD button. Wait until the slide valve reaches the fully loaded position, at which point the
value in the Raw Signal column should stabilize. The value that the signal will stabilize to is determined
by the type of sensor being used.
7. Touch the Save High Offset button, the corresponding slide valve position sensor output has been
recorded as the fully loaded position.
8. Touch the UNLOAD button again. The compressor should fully unload and the indicated Capacity Slide
Position should track with it. Touch the LOAD button to fully load the compressor and observe the
Capacity Slide Position .
9. If the Capacity Slide Position appears to track the Raw Signal , the calibration is complete. Turn off the oil
pump by touching the OIL PUMP button a second time.
10. Otherwise, repeat the procedure from step #1. Ensure that the slide position indicator reading changes
smoothly between full unload and full load.
11. Exit the calibration pad by touching the X button.
12. The compressor must remain stopped for a period of time determined by the Oil Drain Timer .
5.3.2 Compressor Capacity Slide Input Calibration without External Oil Pump
1. Ensure that the control panel is in Service Mode and the compressor is Stopped .
2. Touch the Capacity Slide Position entry in the Sensor Calibration display to bring up the calibration pad.
Sensor Calibration
Capacity Slide Position Calibration Instruction Manual | GEA Omni™
Control panel
228 GEA Refrigeration North America, Inc. | E_806550_2 | Generated 12.01.2016