Like most pumps, the Pentair WhisperFlo pump is shipped from the factory wired for 230V. This guide shows you how to change a WhisperFlo pump and other similar pumps from a 230V to a 115V configuration. The motor on these pumps comes in two different styles to access the wires, one with a small metal door, and one with a full cap. This guide will address both variations.
ATTACH BLACK SUPPLY WIRE TO L1 - There are three wires coming into the motor from its supply source. Attach the BLACK supply wire under the screw at terminal L1.
Note, when attaching a wire to a screw, wrap the bare end of the wire under the screw in a clockwise direction. When the screw is tightened, it will pull the wire into the screw and ensure a tighter connection.