Manual Operation of the Guide Vanes

Manual operation of the guide vanes is helpful to establish a steady motor current for calibration of the motor amps value.

In order to manually operate the guide vanes, it is necessary to override the TARGET GUIDE VANE POSITION value which is accessed on the Status01 table. Manual control is indicated by the word ‘‘SUPVSR!’’ flashing after the target value position. Manual control is also indicated on the default screen on the run status line.

1.Access the Status01 table and look at the target guide vane position (Figure 16). If the compressor is off, the value will read zero.

2.Move the highlight bar to the TARGET GUIDE VANE POSITION line and press the SELECT softkey.

3.Press ENTER to override the automatic target. The screen will now read a value of zero, and the word ‘‘SUPVSR!’’ will flash.

4.Press the SELECT softkey, and0 then press RELEASE softkey to release the vanes to AUTOMATIC mode. After a few seconds the ‘‘SUPVSR!’’ will disappear.

Dry Run to Test Start-Up Sequence

1.Disengage the main motor disconnect on the starter front panel. This should only disconnect the motor power. Power to the controls, oil pump, and starter control circuit should still be energized.

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Carrier PC211 specifications Manual Operation of the Guide Vanes