OPERATION
BASIC ELEMENTS OF A PRESSURE WASHER
High Pressure Pump: Increases the pressure of the water supply.
Engine: Drives the high pressure pump.
High Pressure Hose: Carries the pressurized water from the pump to the gun and wand.
Spray Gun: Connects with wand to control water flow rate, direction, and pressure.
Wand:
Quick Connect Turret Wand (PCH2425, PCH2627, PCH3030, PCH3540HR): Conveniently stores Q.C. nozzles at wand end for quick and easy adjust- ment to 5 spray patterns: 0, 15, 25, 40 and soap/chemical
Chemical Hose: Allows cleaners or cleaning solvents to be mixed with the pressurized water stream. See How To Siphon Chemicals/Cleaning Solvents in Operation section of this manual.
EZ Start Valve: Allows the starter cord on the engine to be pulled without causing a pressure build up in the hose.
BASIC ELEMENTS OF ENGINE
Choke Control (if equipped): Opens and closes the choke valve in carburetor.
Primer Button (if equipped): Primes carburetor with fuel.
Throttle Control Lever: Controls engine speed.
Starter Grip: Pulling starter grip operates recoil starter to crank engine.
Fuel Valve Lever (if equipped): Opens and closes connection between fuel tank and carburetor.
Engine Switch (if equipped): Enables and disables ignition system.
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 through the pressure washer.
CU: Cleaning Units. GPM multiplied by PSI.
Bypass Mode: In Bypass Mode, the pump is recircu- lating water because the trigger of the spray gun is not pulled.
Chemical Injection: Feeds cleaning agents into the pump to mix with the pressurized water and help in cleaning.
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.
Any supply pressure or delivery rate less than
this will not allow the pressure washer to operate at its full potential and may cause damage to the pump.
PRESSURE WASHER OPERATING FEATURES
Bypass Mode
During normal operation the water supply is turned on, engine is running, spray gun trigger is depressed, and the cold water supply circulates inside the pres- sure washer pump allowing pump to maintain a safe operating temperature. When you release spray gun trigger and engine is still running, you are in bypass mode.
When unit is in bypass mode, water circulating inside the pump begins to heat up. If unit is left in bypass mode for more than two (2) minutes, the water tem- perature will rise to a dangerous level and damage internal components of the pump.
If pressure washer is operated without an adequate water supply or operated for more than two (2) min- utes without depressing the spray gun trigger, the pump will overheat and be seriously damaged. Any damage to pump due to these causes will not be cov- ered under warranty.
9 — ENG | D22885 |
