Endress+Hauser Liquisys M CCM223 - Page 34

Operation options Liquisys M CCM223/253
34 Endress+Hauser
A0027238
Locking the keyboard
Press the PLUS and ENTER key simultaneously for at least 3 s to
lock the keyboard against any unauthorized data entry. All the
settings can continue to be read.
The code prompt displays the code 9999.
A0027239
Unlocking the keyboard
Press the CAL and MINUS key simultaneously for at least 3 s to
unlock the keyboard.
The code prompt displays the code 0.