Water Supply; Unloader; Thermal Relief Valve - Mi-T-M Corporation CAW-2004-0ME1 Manual De Operador

CHECK WATER INLET STRAINER
CAUTION
RISK OF UNIT DAMAGE!
DO NOT OVERTIGHTEN THE
UNLOADER. BREAKAGE WILL
RESULT IN IMMEDIATE LOSS OF
WATER PRESSURE AND COSTLY
REPAIRS.
MI-T-M Electric Operator's Manual
INSTALLATION & PREPARATION

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.
Periodic cleaning of the water strainer will help prevent pump problems. As
a strainer becomes obstructed, it restricts proper flow of water to the pump.
This can cause cavitation which will result in premature failure of pump
packings and valves. Using a screw driver, remove the screen; clean or
replace if necessary.
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.
NOTE: Do not use a non-pressurized water supply (i.e. from a well or
pond) with this unit.
c. Connect the high pressure discharge hose to the water outlet of the unit.
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 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 165°F (74°C). 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 turned all the way on.

UNLOADER:

The unloader valve on your machine is equipped with an adjustment knob to
adjust the pressure. Should less pressure be required, simply turn the adjust-
ment knob counterclockwise. To set back to maximum, turn adjustment knob
completely clockwise. DO NOT OVERTIGHTEN!

THERMAL RELIEF VALVE:

To ensure the water temperature does not exceed acceptable levels, never al-
low the pressure washer to operate in the bypass mode (with the unit running
and the trigger closed) for more than three minutes.
A thermal relief valve has been added to this unit to protect the pump. This
valve will open and release water if the water temperature in the pump has
exceeded 190° F (87°C). This will allow fresh, cool water to enter the system,
preventing premature failure of pump packings.
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