An apparatus for detecting the presence of an overheat condition in a fluid
pump includes a pump head for receiving a fluid at a first pressure and
outputting the fluid at a second pressure that is greater than the first
pressure. A motor is positioned adjacent the pump head to drive the pump
head to pressurize the fluid. A single overheat sensor senses an overheat
condition in the pump head and an overheat condition in the motor. When a
threshold temperature is sensed by the overheat sensor, a switch is
activated to prevent operation of the motor. In one embodiment, the
overheat sensor and switch are integral and may, for example, take the
form of a bi-metal switch formed in the stator windings of the motor. In
alternate embodiments, the overheat sensor and switch are separate.
