AEC Econo-Cool Chillers - Manual (Page 50)

AEC Water Temperature Control Units Page 49
6. With the display reading SECr , set the security levels by the
arrow up and down keys. Change the security level to 1 to
make changes to the operating parameters. Economical TCU
units are factory set to Security Level 5.
Available Security Levels
Security level
Mode 0 1 2 3 4 5 6
Calibration X
Option
X X
Expansion X X
Setup X X
Level 2 X X X
Level 1 X X X X
Level 0 X X X X X X
To return to the main display (run mode), press
and hold the AT and Display key for 2 seconds.
Entering Operating Parameters to Select Modes
To enter the menu display:
7. Press the Display key for two seconds.
The screen displays .
8. Press the Up Arrow key to toggle through the different
modes.
The SV readout displays the mode you selected.
9. To switch parameters within a mode, press the Display
key once more for two (2) seconds.
The PV readout displays the different parameters within each
mode.