Unloader; Thermal Relief Valve; Pre-Start Inspection Procedures - Mi-T-M CWC-GASOLINE Manual Del Usuario

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 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 125°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.

UNLOADER:

The unloader has been preset at the factory and should only be adjusted by a trained Mi-T-
M Service Representative. DO NOT adjust the pressure on your own!

THERMAL RELIEF VALVE:

To ensure the bypass 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
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 140° F. This will allow fresh, cool water to enter
the system.

PRE-START INSPECTION PROCEDURES:

Before starting the unit, perform the following procedures:
1. Check the oil level in the pump and engine.
2. Inspect the water inlet strainer. Clean or replace if necessary.
3. Check all hose connections to ensure they are securely tightened.
4. Inspect for system water leaks, oil leaks and fuel leaks. If a fuel leak is found, DO NOT START UNIT!
See "Risk of Explosion or Fire" in the warnings. Be sure that all damaged parts are replaced and that
the mechanical problems are corrected prior to operation of the unit. If you require service, contact your
Customer Service.
5. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak is found, DO NOT USE HOSE!
Replace hose before starting unit. See "Risk of Injection" in the warnings. Be sure that all damaged
parts are replaced and that the mechanical problems are corrected prior to operation of the unit. If you
require service, contact your Customer Service.
CWC-GASOLINE Operator's Manual
INSTALLATION & PREPARATION
Check Water
inlet Strainer
13