Technical information

4-30 OPERATION

Portable Chillers UGH024/1103

PLC CONTROL

SETTING AUTO

TUNE MODE

CONTINUED

The password screen displays.

Use the keypad to enter the password.

The factory-set password is 999.

When the control begins tuning the screen displays TUN-

ING message. The auto-tuning sequence takes about 15

seconds. The screen displays the ‘TUNE Tuning’ mes-

sage. When tuning is complete, the screen displays the

TUNE message. Press the Abort arrow to stop the auto-

tuning sequence and return to the last good PID values.

Press the Escape/Previous Screen button

to exit the Maintenance screens and return to the

main screen.

Press the Enter button to enter the

password.

Press the Scroll arrows to scroll to the

Tune screen.

Press the Tune arrow.

TUNE TUNE ABORT

Press arrow