The drain pan should be removed and cleaned at least once a year. The drain pan is located at the bottom of the refrigerator behind the front grill. Remove the grill, which snaps into place. Grasp the drain pan while pulling slightly upward and forward.
Caution: Before removing the drain pan, unplug the refrigerator or shut off the power at the fuse box or breaker panel to avoid an electrical shock hazard.
Clean the pan with warm soapy water or warm water and baking soda.
If the pan rattles when it is replaced, it is too close to the compressor. Simply reposition the tray.