Simpson MS60753 Instruction Manual page 12

WARNING: Do not allow the unit to run for more than two minutes without
the gun trigger being pulled. This could cause overheating and damage to
the pump. When the temperature inside the pump rises too high, the thermal
relief valve will open and release a spray of water from the pump to lower the
internal temperature. The valve will then close.
Thermal Relief Valve (L, fig. 5): When the temperature inside the
pump rises too high, this valve will open and release a gush of water
in an effort to lower the temperature inside the pump. The valve will
then close.
Detergent 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. If your water
source is a well, the garden hose length can only be 30 ft. (9 m) max.
WARNING: To reduce the possibility of contamination always protect
against backflow when connected to a potable water system.
pRESSURE WASHER OpERATING FEATURES
pRESSURE ADJUSTMENTS
The pressure setting is preset at the factory to achieve op ti mum pres sure and
cleaning. If you need to lower the pres sure, it can be accomplished by these meth-
ods.
1. Back away from the sur face to be cleaned. The further away you are, the
less the pressure will be on the surface to be cleaned.
2. Change to the 40˚ nozzle. This nozzle delivers a less powerful stream of water
and a wider spray pattern. Refer to how To Use Spray Wand.
NOTICE: DO NOT attempt to increase pump pressure. A higher pressure setting
than the factory set pressure may damage pump.
HOW TO USE SpRAY WAND
There are five spray pattern settings located on the 5n1 Multi-tip Nozzle. To select a
spray pattern, rotate the spray selector to the desired setting. Refer to the following
chart to choose the correct nozzle for the job to be performed.
DANGER: Risk of fluid injection. Do not direct discharge stream toward
persons, unprotected skin, eyes or any pets or animals. Serious injury will
occur.
WARNING: Flying objects could cause risk of serious injury. Do not attempt
to change nozzles while pressure washer is running. Turn engine off before
changing nozzles.
NOzzLE SpRAY pATTERN USES
powerful pinpoint
for spot cleaning
of hard, unpainted
surfaces or for
high reach areas
intense cleaning
of unpainted
hard surfaces
12- ENG
5
SURFACES*
unpainted metal
or concrete;
DO NOT use on wood
grills, driveways, concrete
or brick walkways,
unpainted brick or stucco
L