ENTERING A

PASSCODE

PC-1 and PC-2 controls have a security feature that prevents accidental or unauthorized changes to the setpoint tempera- ture, high and low deviation limits, SPI address, and baud rate.

If passcode protection is enabled, you must enter the correct passcode to change these parameters. To enter the passcode:

1

Press and hold the Setpoint Select button for 5 seconds. The control will display 1 PaS to indi- cate a passcode is needed.

2

Press the Select button until the correct passcode appears in the display.

3

Press again to enter the passcode.

If the passcode is correct, the control displays ACC PAS for 3 seconds. If the passcode is incorrect, the control dis- plays rEJ PAS (rejected passcode).

4

Press Setpoint to select the parameter you want to change.

You will have access to the system parameters until:

The power is cycled off and on.

The RUN or STOP button is pressed.

No key has been pressed for 30 seconds.

NOTE: Pressing the STOP or RUN key while you are entering a passcode will abort the passcode entry sequence

UGH004/0999

microKool Portable Chillers

OPERATION 4-5

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Conair MPW, MPA manual Entering a Passcode, Press Setpoint to select the parameter you want to change