1. Servicing my QuietOne 800 1200 series pump 1 Completely disconnect the pump from your system and the power outlet 2 Remove the gray front housing by squeezing it and pull it out from the bottom groove then gently pull up and out to clear the securing tab on the top of the pump QuietOne 1200 j QuietOne 800 3 Pull the impeller straight out of the impeller chamber and steel shaft QuietOne 1200 QuietOne 800 4 Clean the pump and impeller chamber as well as the impeller Check the steel shaft for signs of rust or if it wiggles or comes out of the pump Lubricate the impeller and steel shaft using silicone lubricant QuietOne 1200 QuietOne 800 5 Re insert the impeller into the impeller chamber then replace the gray front housing making sure it fits into the securing tabs