Thermal Relief Valve

PRESSURE WASHER

TERMINOLOGY

PSI: Pounds per Square Inch. The unit of measure for water pressure. Also used for air pressure, hydraulic pressure, etc.

GPM: Gallons Per Minute. The unit of measure for the flow rate of water.

CU: Cleaning Units. GPM multiplied by PSI. GPM x PSI = CU

Bypass Mode: Allows water to re-circulate within pump when the gun trigger is not pulled.

Allowing the unit to run for more than

two minutes without the gun trigger pulled could cause overheating and damage to the pump.

Thermal Relief Valve:

When the temperature inside the pump rises too high the valve will open and release a gush of water in an effort to lower the temperature inside the

pump. The valve will then close.

Chemical Injection System: Mixes cleaners or cleaning solvents with the water to improve cleaning effectiveness.

Water Supply: All pressure washers must have a source of water. The minimum requirements for a water supply are 20 PSI and 5 gallons per minute.

PRESSURE WASHER OPERATING FEATURES

PRESSURE ADJUSTMENTS

The pressure setting is preset at the factory to achieve optimum pressure and cleaning. If you need to lower the pressure, it can be accomplished by these methods.

1.Back away from the surface to be cleaned. The further away you are, the less the pressure will be on the surface to be cleaned.

2.Change to the 40º nozzle - (white) this nozzle delivers a less powerful stream of water and a wider spray pattern.

DO NOT attempt to increase pump

pressure. A higher pressure setting than the factory set pressure may damage pump.

3.Reduce the speed of the gasoline engine (RPM). Slow the engine down and the water pressure will go down with it.

A07513

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Porter-Cable A07513-0412-0 instruction manual Pressure Washer Terminology, Pressure Adjustments
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A07513-0412-0 specifications

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