6. WASH STATION REMOTE (if equipped): Install
station on the wall at a convenient wash site. Control
switched in the wash station remote will override and
operate the pump, burner, and soap functions. Soap
(chemical) valve at machine must be preset before
soap switch at remote is activated. WARNING: Do not
leave soap switch in the ‘on’ position when soap is
depleted. Pressure drop will occur due to air intake and
harm system components. Remote systems have an
“auto-off” feature with an adjustable time that can be set
to your preference or come equipped with a windup
timer.
7. BYPASS MODE: (if equipped): System will go into
bypass mode when machine is left running and trigger
gun is closed. Bypass mode is when the inlet water
coming into the pump re-circulates through the
unloader across the pump head. If left in bypass too
long – more than five minutes – friction created by the
movement of the water will begin to heat the water at a
rapid rate. If equipped with a THERMAL DUMP
VALVE, water exceeding 145°F will cause the valve to
open allowing the cool water in to the pump. The valve
will reset itself when water temperature comes down to
a safe level. If equipped with a bulk water tank, water
can be bypassed back through the tank allowing for a
larger volume of water to be re-circulated through the
pump head thus reducing heat on the pump seals. If
equipped with By-pass-cool system, a small portion of
the bypass water is routed back through the float tank
to keep the pump cool. Warning: Do not leave in
bypass for longer than five minutes to prevent
pump from overheating. Shut off unit when not
spraying water.
8. SET CHEMICAL INJECTION: If unit is equipped
with inlet chemical injection, place chemical pickup tube
in pre-mixed chemical solution and open chemical
valve for desired chemical concentration. Rinse and
close valve after use, do not use harsh chemicals
through the inlet injector system. Drawing air into the
chemical tube by leaving the chemical valve open will
cause the pump to lose pressure and may cause pump
damage.
If unit is equipped with a downstream chemical injector,
connect the chemical injection assembly into the high-
pressure discharge hose quick connects. Place the
chemical pickup into chemical solution and turn brass
collar to adjust concentration. The chemical will inject
only when you drop the outlet pressure by opening the
valve on the dual wand or changing to a low-pressure
nozzle. Soap the surface from the bottom up. Rinse
and close chemical valve when not in use.
9. If equipped with an AF2 (2) gun operation, select
“50%” nozzle from panel and insert into coupler on
spray gun for full pressure output when using two guns
at the same time. Flow can be reduced by selecting
flow reduction nozzles only when one operator is using
the machine. Maximum temperature is 200°F.
NATURAL GAS / LP HEATED MODELS: Heat rise will
vary depending on inlet water temperature and
environmental conditions. Natural gas burners are
preset from the factory for an inlet water temperature of
60-70 degrees and approximately 4” of water column
natural gas pressure on the outlet of the gas valve for a
140° heat rise. If the water inlet temperature is 20°
colder than the factory setting, the heat rise will be
approximately 6% less. Adjustments can be made to
the gas valve outlet pressure by a qualified gas
technician to increase the outlet gas pressure to a 5”
water column with the use of a manometer to gain
higher heat rise and compensate for colder water inlet
conditions if they persist year round. Inlet gas pressure
when measured while the burner is on with a
manometer placed right before the gas valve, needs to
be between 6-7” water column, natural gas pressure (7-
11” LPG) and properly sized gas piping is required to
achieve full factory rated heat rise. (See
INSTALLATION GUIDELINES included with
manual) Protect gas valve from dripping water.
WASHING TECHNIQUES
When washing, always start from the bottom up, and do
the final rinse from the top down. This will keep the
water from streaking the surfaces that are being
cleaned. When applying chemicals, it is also best to
start from the bottom and work up.
In areas where there is no grease or oil present, and
the dirt is loose, cold water may be sufficient. When it
comes to grease, oil, and hard to clean dirt; hot water
and/or chemicals can make the job easier, and speed
up the cleaning process. For applications that require
even more heat and where water use/runoff must be
minimized, switch to the steam mode (if equipped) and
adjust the thermostat for up to 250° steam.
For general washing use a broad pattern spray nozzle
such as the 40-degree nozzle. Backing away from the
surface and using the broad spray nozzle works best to
perform rinsing and delicate surface washing. In areas
where the cleaning is more difficult and in smaller areas
such as cracks and holes, use the narrow spray
nozzles, 15 degree.
Chemicals can be applied in a couple of different ways.
One way is with a hand spray pump. The other is with
the chemical system on the equipment; either
downstream or high pressure depending on the system
you have. When using the high-pressure chemical
system, do not use any caustic chemical as this may
cause damage to the pump. For very harsh chemicals,
it is best to use a hand sprayer. First wet the surface
and wash off heavy debris. Test the surface to be sure
MAINTAIN PH BETWEEN 5 & 9
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