I thought I’d been doing a good job keeping my iRobot Roomba 675 clean, carefully pulling clumps of hair off its brushes and wheels and emptying its bin after every cleaning. Little did I know that dust and gunk were building up in places where I wasn’t even looking.
First, consider the metal charging contacts on the Roomba’s base station. When was the last time you gave them a close look—or looked at them at all, for that matter?
I sure hadn’t, but when I did, I saw that instead of being completely silver, one of the two contacts had a rust-colored ring around it, while the other was almost completely discolored.
Having gunked-up charging contacts on your Roomba base station isn’t just a cosmetic issue. At some point, those contacts will get so dirty that your Roomba will have a tough time docking and charging, and you might find yourself with a near-dead Roomba the next time you want to clean your floors.
Also, have you noticed that your Roomba has been moving slowly or erratic lately? If the Roomba’s IR-enabled cliff sensors get too dusty and dirty, they’ll block the IR beam that’s supposed to reflect back, which means the vacuum might think that it’s continually approaching a wall or about to tumble down the stairs.
Full article at https://www.techhive.com/article/3606392/how-to-clean-a-roomba-charging-contacts-and-cliff-sensors.html