Case HI C4013HGHG, User Manual

Page: 10 / 28

10
CONNECTING TO WATER SUPPLY
WATER SUPPLY
1.
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 water inlet strainer to ensure it is clean and free of any obstructions. As a
strainer becomes obstructed, it restricts the flow of water to the pump. This can result
in cavitations which will prematurely cause failure of pump components.
a.
Using a screwdriver, remove the screen from the water inlet.
b.
Clean or replace if necessary.
3.
Connect the garden hose to the inlet of your high pressure pump. Thread the
connection together by hand until tight. Ensure the connection is tight at both ends
(at the pump inlet and at the water supply source).
4.
Follow the incoming water requirements listed below:
a.
Water pressure must be a minimum of 20 pounds per square Inch (PSI) and a
maximum of 125 PSI. (A typical outdoor faucet will generally supply this PSI if turned
completely “ON”.)
b.
Incoming GPM (Gallons Per Minute) 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).
5.
Never allow the unit to operate without the incoming water line attached and the
water supply opened all the way.
NOTICE
• If there is a high mineral content in your water, it is highly recommended that a water
softener and an additional water strainer be added to the water inlet. This will help
prevent the possibility of excessive scale buildup inside the heat exchanger coil.
Pumps are water cooled.
When the machine is running, ensure the trigger of the gun is
pressed to allow a constant flow of fresh water into and out of the pump. Do not let the
machine run for more than 30 seconds without pressing down on the trigger.
triplex pump
Most pumps are protected by a
thermal valve.
The thermal valve releases water if a
pump starts to run too hot. It will prevent catastrophic heat failure. However, the pump
may have suffered damage and need maintenance, repair, or replacement. If it does not
reset and continues to leak water, the thermal valve may need to be replaced.
threaded into pump
with teflon tape
leaks water to
prevent overheating