2
JCW-Series Operator’s Manual
water supply:
. Select a water supply hose which is a quality grade of garden hose measuring
at least 3/4” ID and no longer than 50 feet.
2 Check the see-through water filter to ensure it is clean and free of any
obstructions. Periodic cleaning of the see-through water filter will help
prevent pump problems. As a filter screen becomes obstructed, it restricts
proper flow of water to the pump. This can result in cavitations which will
cause premature failure of pump packings.
a. Unscrew the garden hose inlet connection from the front of the filter
assembly.
b. Remove the clear plastic cover and clean the filter screen.
3. Connect the hoses:
a. Connect one end of the water supply hose to the water inlet of the
unit.
b. Connect the other end of the hose to your pressurized water supply.
When connecting the water inlet to the water supply mains, local
regulations of your water company must be observed. In some areas, the
unit must not be connected directly to the public drinking water supply.
This is to ensure that there is no feedback of the detergents into the
water supply. (Direct connection is permitted if a back flow preventer is
installed.)
c. Quick-connect the high pressure discharge hose to the water outlet of
the unit.
d. Connect the other end of the discharge hose to the gun.
4. Follow the incoming water requirements listed below:
a. Water pressure must be a minimum of 25 pounds per square inch
(PSI)
and a maximum of 25 PSI. (A typical outdoor faucet will generally
supply this PSI if turned completely “ON”.)
b. Incoming GPM must be approximately one gallon more than the
outgoing GPM stated on the pressure washer nameplate. (You can
check GPM by timing how long it takes to fill a 5 gallon container.)
c. Incoming water temperature must not exceed 25°F. Excessive pump
damage may result if the water temperature exceeds this acceptable
level.
5. Never allow the unit to operate without the incoming water line attached and
the water supply completely turned on.
cHecK water inlet strainer
installation & preparation
unloader:
The unloader on your machine is equipped with an adjustment knob to adjust
the pressure. Should less pressure be required, simply turn the adjustment knob
counterclockwise. To set back to maximum, turn adjustment knob completely
clockwise. DO NOT OVERTIGhTEN!
CAUTION
risK of unit damage!
do not overtigHten tHe
unloader. breaKage could
result in immediate loss of
water pressure and costly
repairs.
tHermal relief valve:
To ensure the water temperature does not exceed acceptable levels, never allow
the pressure washer to operate in the bypass mode (with the unit running and
the trigger gun closed) for more than three minutes.
A thermal relief valve has been added to this unit to protect the pump. It may
begin to open and release water if the water temperature in the pump has
exceeded 40°F. This will allow fresh, cool water to enter the system.
