GE Xcellerex XDM Series Operating Instructions Manual page 174

6 Preparation
6.4 Prepare and install the probes
6.4.4 Insert probes into the disposable bag
Step
8
174
Action
Push the thumb rest of the male connector down towards the base of the
body of the connector until the thumb rest meets the body.
Note:
A ratchet sound is heard from the male ACD connector during this motion.
Xcellerex XDM 50-1000, XDUO 100-1000 mixers Operating Instructions 29251615 AD