The document provides installation instructions for removing and replacing a microchip in a QUE-115A unit. The instructions are: 1) Remove power and cover from the unit; 2) Locate the microchip near the center rear and note the small dot and groove for correct orientation of replacement; 3) Carefully remove the old chip and install the new one in the same orientation; 4) Test the unit before reassembling and call for help if needed.