I knew a guy that worked for specialty pump mfg at one point. They'd ship a ceramic lined, ceramic impeller pump
with a warning in big friendly letters to open up the pump casing after it's hooked up, but before it's run for the
first time. Otherwise, more often than not, the motor's power was wired backwards, and the impeller would unscrew
itself, destroying it and the lining.
Never thought to ask him about any geothermal installations.
i once worked as the newbie in a shop and watched the senior maintenance associate throw away a perfectly good expensive electric motor because it growled when he applied test power. #-phase motors do that if the lines are hooked up wrong. When the second motor acted the same way,he decided to check the wiring instructions.
I have several other stories of experienced workers who took over because the newbie was too slow and cautious;they promptly destroyed the item being worked on!
RTFM !