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Pressure Adjustment:
The maximum working pressure is pre-set at the factory and can not be overridden. By turning the pressure
adjustment knob anti-clockwise you can reduce both the pressure and water volume being supplied from the pump.
Low Pressure Detergent Operation:
The Black Tip – will lower the pressure and allow chemical to be drawn through the
downstream chemical injector.
•
Change the high pressure nozzle for the Detergent (Black) Nozzle.
(Be sure the quick coupler is fully engaged before pulling the trigger)
•
The chemical injector will only work when this (black) nozzle is used.
•
Push the ¼” clear plastic hose to the inlet barb of the chemical injector
located near the high pressure hose connection (item 8, page 2).
•
Insert the loose end of the detergent pick up hose into the desired chemical.
Be sure to flush the injection system with clean water after use.
•
Place the chemical injector hose in a bucket of clean water and operate for
one minute.
Thermal Relief Valve:
During normal operation, the cold water from your water supply passes through the inside of the pressure pump
allowing the pump to maintain a normal operating temperature. When you let go of the trigger, the pump enters
by-pass mode and re-circulates water within the pump.
If the unit is left in the by-pass mode for more than two (2) minutes, the water temperature may rise to a dangerous
level causing cavitation and possible damage to internal components of the pump. As a safe guard against damage
from overheating, pumps are equipped with a thermal relief valve. This safety valve will open when the internal water
temperature becomes too high, once cool the valve will close again automatically.
Do not attempt to run hot water into the pump or allow your unit to operate in the by-pass mode for long
periods of time (2 minutes max), as overheating of the pump will cause component damage.
Shut Off Procedure:
1.
Turn engine switch to off position. NOTE: NEVER turn the water off with the engine running.
2.
Move fuel tap to off position.
