PRESSURE DELIVERY SYSTEM:
DISCHARGE HOSE: Use only a wire braid hose
rated for the output pressure and temperature of the
machine. Additional hose lengths can be added with
quick twist couplers with a minimal loss in pressure of
about .5 PSI per foot. Inspect hoses for wear and
replace if necessary. Avoid kinking or running over
the hose to extend the hose life.
WARNING: Hot2Go hot water machines require a
special 250° rated hose. If the hose is not
replaced when worn it may burst and serious
injury and burns could result.
QUICK COUPLERS: The swivel
connectors on the high-pressure hose
and quick couplers on the spray nozzle
make it easy to change nozzles or hoses. When
connecting hoses or nozzles, be certain that the collar
on the quick couplers snap into the locked position to
prevent them from becoming loose. If the quick
connect begins to leak, replace the O-ring (specify
Viton or EDPM material) located in the female socket
coupler. Grease the coupler periodically to make it
work smoothly. Replace if it becomes worn. Twist
couplers are also used on most wands so they can be
interchanged.
TRIGGER GUNS: The trigger gun is merely a valve
that turns water spray on and off. If it begins to leak or
fails to shut off, replace or repair the valve assembly.
Machines that spray steam only are equipped with an
open gun that does not shut off the water spray.
SPRAY WAND: Spray wands are available in
different lengths (2 to 6 foot) and with variable
pressure adjustment for various cleaning applications.
The dual wand has a low-pressure and high-pressure
nozzle. When the dual wand is installed on the
machine, the output pressure can be lowered simply
by turning the valve on the dual wand to divert water
into the low-pressure nozzle. This lowers the pressure
(psi) but has little or no impact on the flow (gpm) or
outlet water temperature on hot water machines.
The short wands are ideal for washing in confined
areas such as a car lot. The longer wands help to
clean areas that could not normally be reached.
WARNING wands less than 48” long should not be
used with machines producing over 3200psi.
NOZZLES: The spray nozzle
is
a
precisely
machined
orifice made of hardened
stainless steel. The orifice
size is matched to the output
of your machine to attain the
proper flow and pressure in which your machine was
designed. The orifice, or hole, of the nozzle will
enlarge with wear. For optimum performance, replace
the spray nozzle to maintain the full output pressure of
your machine. The nozzle installed on your machine
from the manufacturer is designed to allow only about
90% of the water being pumped to discharge out of
the nozzle. The remaining 10% is bypassed back into
the inlet water supply by the unloader/regulator valve.
If an incorrect nozzle size is used, the maximum flow
and pressure of the machine cannot be achieved and
the unloader valve can wear prematurely. When
replacing the nozzle, match to one size under the flow
and pressure output of the pump.
The nozzle is usually connected to the wand with a
quick coupler. Be sure the collar on the quick coupler
snaps into the locked position, or the nozzle could be
lost when the trigger on the spray gun is squeezed.
Never connect the spray nozzle directly to the trigger
gun without a wand or injury could result. Never place
hands or fingers over the nozzle tip.
The nozzles generally come in four different spray
angles: 0°, 15°, 25°, and 40°. The different spray
angles of a given size of nozzle do not change the
output pressure of the machine, just the impact force
and surface coverage of the water spray.
The optional 0° nozzle sprays a straight stream which
impacts the surface very hard but does not cover a
very wide area. Use the 0° red nozzle with care
because it can damage the surface you are spraying
with its high impact and long reaching spray.
The 15° yellow nozzle sprays out a flat stream at a 15°
pattern. It gives you less impact power than the
above, but covers a wider area with one pass of the
spray wand. As you back away, the spraying nozzle
from the surface, the spray impact will decrease.
The 25° green nozzle is wider than the 15° and is
most commonly referred to as the “steam nozzle”.
The steam nozzles are sized to spray less water than
the other high-pressure nozzles, so the water is
discharged at a higher temperature. (Up to 250°F.)
The 40° nozzle spreads the water stream over a wide
area to give you less impact for delicate surfaces.
Never connect the spray nozzle directly to the
trigger gun without a wand or injury could result.
Never place hands or fingers over the nozzle tip.
Never lock any gun in the on position for any
reason. Never point spray at a person or any
part of the body.
SYSTEM INFORMATION
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