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CHANGING PRESSURE
The variable Unloader Valve is already set to full pressure. Do not adjust the Unloader past the maximum
pressure, as this will not increase the performance, and the excessive shuto pressure will damage the Washer.
CLEANING CHEMICALS
For chemical application, insert soap nozzle at the end of the lance. To change concentration, adjust metering
valve toward open or close. Use only chemicals with
STOPPING THE WASHER
1.
Ensure Chemical Valve is "OFF", then shut o Burner Switch.
2.
Pump cold water through the Washer for two minutes.
3.
Retard the throttle until the engine to idling.
4.
Shut o Engine Switch and turn on Trigger Gun to release pressure in the line.
UNLOADER VALVE
The Unloader Valve allows all of the water delivered by the pump to return to the pump suction side. If the trigger
gun is closed or "OFF", the Unloader Valve goes into the "bypass mode" and the pump runs without pressure.
However, the pump may be severely damaged, due to excessive overheating, if left running in the "bypass mode"
or "gun-o " situation for more than 6 minutes.
SAFETY RELIEF VALVE
The Relief Valve prevents the machine from being subjected to abnormally high pressures. If this situation occurs,
the valve will blow o relieving the pressure in the coil. This valve may also operate if the unloader is adjusted too
high.
PRESSURE SWITCH
The Pressure Switch ensures that there is pressure, and therefore there is water ow at the head of the pump.
This control does not operate at less than 300 psi. Therefore if the pump is on "bypass mode", the burner will not
operate.
THERMOSTAT
The built-in thermostat allows temperature adjustment up to 212 °F
OPERATION (Continued)
a PH between 7.0 and 10.0.
SAFETY COMPONENTS
5
SERIES
GF
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