NOTE: The pump on this unit is maintenance free and requires
no
oil. If
there
is
a problem with
the
pump, contact our Customer Service Group on
www.simpsoncleaning.com
as
soon as possible.
OPERATION
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
equals CU.
Bypass Mode: Allows water
to
re-circulate within
the
pump
when the gun trigger is
not
pulled. This feature allows the operator
to
release the trigger gun and reposition
themselves without having
to
turn the engine off
in
between cleaning actions.
NOTICE: Allowing the unit to run
for
more than two minutes without the gun trig-
ger
being pulled could cause overheating
and
damage to the pump.
Do
not
let the
pressure washer run
for
more than two minutes in Bypass Mode.
Tum
off
the engine
and
relieve the pressure in the gun during these extended situations.
Thermal Relief Valve
{P,
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 optimum pressure and
cleaning.
If
you need
to
lower the pressure,
it
can
be
accomplished
by
these meth-
ods.
1.
2.
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.
Change
to
the
40°
nozzle
(white). 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
The nozzles for the spray wand are stored
in
the nozzle holder on the panel assembly.
Colors
on the panel identify nozzle location and spray pattern. Refer to the following
chart
to
choose the correct nozzle for the
job
to
be performed.
12- ENG
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