DeWalt DPW4240 Manual De Instrucciones página 18

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Glossary
Bypass mode: Allows water to re-circulate within pump when the gun
trigger is not pulled.
chemical hose: Feeds cleaning agents into the pump to mix with the
water. Refer to chemicals and cleaning solvents.
chemical injection system: Mixes cleaners or cleaning solvents with
water to improve cleaning effectiveness.
choke control: Opens and closes carburetor choke valve.
cu: Cleaning Units. GPM multiplied by psi. (GPM x PSI = CU)
Fuel valve lever: Opens/closes connection between fuel tank and
carburetor.
GPM: Gallons Per Minute. The unit of measure for the flow rate of
water.
PsI: Pounds per Square Inch. The unit of measure for water pressure.
Also used for air pressure, hydraulic pressure, etc.
kPa (kilopascal): Metric pressure measurement. 1 kilopascal equal
1000 pascals.
Quick-connect spray wand: Allows the user to quickly change out
high-pressure nozzles. Refer to Spray Wand Nozzles.
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.
Water supply: All pressure washers must have a source of water. The
minimum requirements for a water supply are 20 psi (138 kPa) and 5
gallons per minute.
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