I think some of us could write a book about the hieroglyphics they use to communicate with us. Some recent ones were "machine leak from the pipe tube" (water coming from the vent tube), "24 volt went out" (24 volt low alarm), and "mech had pump stop working" (A11 blood pump code).
PCT ripped the front screen off a T machine. found it in my office the next morning with the screen laying in the floor. Repair form "Screen falled in the floor". She tried to put it back on with plastic medical tape.
PCT: Machine said 24V low so I changed the 9V battery, but it's still saying 24V low?
I wish I could get mine to change the 9V battery. Every time a machine is pulled for that (not often, maybe once a year per clinic) I explain to them that they could have saved themselves the trouble of pulling the machine, bringing the new machine up in condo, setting up the new machine, etc. They typically just look at me like a calf looking at a new gate. The other time waster is when they pull a machine for "No 8mm in Low Volume". I tell them all they need to do is turn Low Volume off with the same result as above.
I was a PCT for a long time before moving into Biomed full time about 20 years ago. When we would have a problem with a machine we always looked it up in the operator's manual before calling the biomed, unless it was something we knew we couldn't fix like a major leak coming from inside the machine. I try to explain to my group of Neanderthals that they could occasionally save themselves a lot of time and trouble if they'd just look up the problem first but they're set in their ways.