Maintenance - General JET SET J-1450 Operator's Manual

gEnEral'S JET SET
NOTE: Typical industry standard stipulates you hold the
high pressure spray nozzle approximately 6-8" from the sur-
face to be cleaned. When cleaning with a detergent, apply
from bottom up with an even left to right movement. Rinse
from top down with a similar motion. This will help reduce
potential streaking. Always apply soap to a dry surface. This
will enhance penetration and detergent cling and reduce
dilution of detergent with an already wet surface.
If you have the dual-lance wand (optional with the J-
1450) you may draw detergents through the spray wand
in conjunction with the detergent injector mounted on the
machine. First set up the detergent injector system (see
Detergent Injector).
Then simply turn the knob on the wand counterclockwise
so that water is flowing through the wide spray nozzle. To
spray water only, turn the knob to the clockwise position so
that the water flows through the narrow spray nozzle.
The spray wand option with the other jets may also be used
to spray detergent. To do so, simply turn the nozzle on the
end of the wand counterclockwise. As the spray widens,
more of the detergent will be drawn through the wand. Turn
the nozzle clockwise to reduce the detergent flow and nar-
row the water spray pattern and return to high pressure.
Detergent Injector (Optional)
The detergent injector is an option with the J-1450 and can
be attached to the free end of the ball valve. Do not attach
detergent injector to the inlet side of the pump. Detergents
can damage pump.
To use the detergent injector, attach one end of siphon hose
to the injector and put the filter end in the detergent solution.
Be sure the end of the hose is at the bottom of the container
or bucket. Some models have adjustable valves to control
the amount of detergent drawn through the hose.
Remember: Do not use corrosive material. See warning
previously listed.
Regulating Pressure Unloader
The machine is equipped with a regulating pressure unload-
er to prevent pressure overload in the event that the nozzle
is plugged or the ball valve or trigger is shut off. When the
machine is in the by-pass mode, the pump will continue to
run. However running in by-pass mode for extended periods
will cause damage to the pump; no more than 5 minutes
with the J-1450 pump. Excessive temperatures will damage
the pump and void the warranty.
The machine also comes with thermal overload protec-
tion. When water temperature in pump increases to 140°F
(60°C), the thermal relief valve will release hot water and
allow cool water to enter pump from fresh water supply.
To adjust unloader, loosen lock nut and turn the knob
clockwise to increase pressure and counterclockwise to
decrease pressure. Caution: Do not overtighten unloader.
Tighten lock nut after adjustments are made.
General's Jet set™ J-1450
™
OPEraTOr'S ManUal
Freeze Protection
To protect your machine from severe damage caused by
water freezing inside the components, it is important to
winterize it whenever it is subjected to freezing tempera-
tures.
The best way to protect the system is to keep it out of the
cold. Barring that, the next best way is to flush the system
with anti-freeze. To do so, simply attach a short garden hose
(not to exceed four feet) to inlet on the pump and put other
end into the anti-freeze container. Be sure to remove the
nozzle from the hose. Turn the machine on to draw anti-
freeze into the system. When anti-freeze flows out of the
end of the hose, turn the machine off. Connect high pres-
sure hose and trigger and follow above procedure. Cycle
trigger on/off so that the anti-freeze will flow into unloader
and injector section of machine.
When preparing to operate equipment the next time, re-
move the anti-freeze. To do so, reconnect water source, turn
pump on and direct flow of anti-freeze back into container.
Be careful not to dilute anti-freeze with incoming water
supply. Anti-freeze, if kept relatively undiluted can be used
again and again.
Hoses can also be protected from freezing by using com-
pressed air to clear them of residual water. Remember to
remove nozzle from jet hose and hold trigger of spray wand
in open position.

MAINTENANCE

Regular inspection is the key to preventing breakdowns
and prolonging the life of the equipment. Follow this simple
procedure religiously.
DAILY
Check that the water supply is adequate.
Check that the nozzle on the spray wand is not clogged
or worn out.
Check that the PUMP OIL LEVEL is within operating range
on dipstick or sight glass.
Check the INLET FILTER.
WEEkLY
Check the PRESSURE HOSE for wear and damage. Dam-
aged hose can be repaired at a local service dealer or by
your equipment dealer.
Pump Crankcase Oil Change: Service after the 1st month
or after 20 hours. Then service every year or 500 hours.
Use SAE 30W Non-Detergent Motor Oil to full mark on
dipstick or to dot on sight glass.
8.914-323.0/8.914-323.0/97-6116 • reV. 4/08
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