Patent ID: 8769763

Claim:
A floor cleaning device comprising: a base; a cleaning fluid supply tank carried by the base; a source of pressure communicating with the cleaning fluid supply tank that pressurizes a cleaning fluid held in the cleaning fluid supply tank to a pressure above atmospheric pressure; a fluid delivery system which delivers pressurized cleaning fluid from the cleaning fluid supply tank to a surface to be cleaned; a heater which heats the cleaning fluid before it exits said fluid delivery system, the heater operating at a first power level in a warm-up phase and at a second power level, lower than the first power level, in an operational mode; a suction source supported by the base and separate from the source of pressure; and a control system which controls delivery of power to the suction source and the heater, wherein in the warm-up phase, the control system controls delivery of power to the pressure source for pressurizing the cleaning fluid supply tank.