I imagine u all saw the post of reddit about a jupiter miner "catching fire" I suggest, at least in the early stage, to not let the miners go 24hours, but every few hours maybe shut them down for few minutes/half an hour, so maybe the delicate parts gets use to the stress of mining, could make sense?
rapid and multiple cold and heat will cause stress to the board/component too, just make sure everything is ok then should be no problem. Some GPU too have caps blown issue.