97-6230 • HOTSY 555SS • Rev. 12/06
9
PRESSURE
W
ASHER
OPERA
TOR’S MANU
AL
general cleaning techniques & storage
Warning: Pressure washers produce a kickback. To
prevent personal injuries due to falls use auxiliary
safety equipment.
The detergent injector valve operates by reducing the
volume of water, thus a vacuum is achieved and detergent
is drawn into the system.
do not
reduce the water inlet
flow so much as the pump cavitates because of water
starvation. Operating a pump with insufficient water will
damage the pump seals.
1. Insert detergent line and screen into container of
detergent.
2. Completely open detergent control knob located on
the side of the detergent injector valve.
3. Start the detergent suction by rotating the water
adjustment knob of the detergent injector valve.
See
figure 5
. Turning the knob counterclockwise
will pull detergent into the system. The flow may be
observed
4. The side control knob can now be adjusted to meter
the desired amount of detergent.
5. Select the width of your nozzle spray pattern by turning
the black knob on the nozzle. See
figure 6
. Pattern
can be from 0 degrees through 80 degrees fan spray.
Release the trigger of the trigger gun prior to making
any spray pattern adjustments.
Figure 5 - Detergent Injector Valve
Water adjustment knob
Water
increase
Water
decrease
detergent
off
detergent
on
detergent
control knob
6. Wash from the bottom to the top, using side to side
motions. This washes away heavy dirt and allows the
detergent to soak as you work toward the top.
7. Do not wash at a 90
o
angle to the work (straight at
it). This will allow water to splash back at you and
reduces your cleaning power. Wash at a 30
o
to 60
o
angle to the work. This will allow the water to splash
away from you and the water will wash the dirt away
faster and easier.
8. Use the width of the spray pattern to wash in a
wide path. Overlap spray paths for complete cover-
age washing from side to side, using slow, steady
motions.
9. The nozzle should be 12" to 24" from work, closer
for tough areas. Be careful on painted or delicate
surfaces, the pressure may damage surface if nozzle
is too close.
10. Small parts should be washed in a basket so the
pressure does not push them away. Larger, lightweight
parts should be clamped down so the pressure does
not push them away.
11. Turn the side detergent control knob clockwise (CW)
for detergent decrease. Wait for detergent to clear.
Always rinse with cold water after using detergent.
Rinse from the top to the bottom to prevent detergent
from dripping onto a rinsed area. For the best results,
contact your Hotsy dealer to help you select the best
detergent for your application.
storage
storage
Protect from freezing by storing in a heated area, or by
flushing the system with antifreeze (use an automotive
engine antifreeze or windshield washer solvent to
antifreeze). To flush the system with antifreeze, attach
a short length of hose to the garden hose connector
located on the pump. Place the other end of the hose
into a container of antifreeze. Start machine and allow
to run until antifreeze flows from the end of the wand.
Squeeze and release the trigger of the trigger gun several
times to antifreeze the unloader system. Also draw
antifreeze through the detergent inlet line to antifreeze the
detergent system. For added protection after anti-freezing,
disconnect the pressure hose from machine and remove
the coil drain plug (refer to
exploded view
for location).
After coil has drained, replace pressure hose and coil
drain plug. If the pressure washer is not to be used for
an extended length of time, it is recommended that the
system be flushed with antifreeze for rust protection.
Figure 6 - Nozzle Spray Pattern
outer
housing
solid
stream
fan
spray
face view
