Operating instructions, Basic elements of an engine, Basic elements of a pressure washer – DeVillbiss Air Power Company Excell A20118 User Manual
Page 10: Pressure washer terminology
10- ENG
A20118
OPERATING INSTRUCTIONS
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 spray wand.
Spray Gun: Connects with spray
wand to control water flow rate,
direction, and pressure.
Gatling Spray Wand: Allows the
user to quickly change high-pressure
nozzles. See How To Use Spray Wand
instructions in this section.
Chemical Hose: Feeds cleaning
agents to the pump to mix with the
water. See How To Apply Chemicals/
Cleaning Solvents instructions in this
section.
Compare the illustrations with your unit to familiarize yourself with the location
of various controls and adjustments. Save this manual for future reference.
Engine
High
Pressure
Hose
Spray
Gun
High Pressure
Pump
BASIC ELEMENTS OF AN
ENGINE
Refer to the engine manual for
location and operation of engine
controls.
Choke Control: Opens and closes
carburetor choke valve.
Starter Grip: Pulling starter grip
operates recoil starter to crank
engine.
Engine Switch: 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 fl ow rate of water.
CU: Cleaning Units. GPM multiplied
by PSI. GPM x PSI = CU
Chemical
Hose
Gatling
Spray
Wand