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3.6 USING THE PRESSURE WASHER
3.6.1 WATER CONNECTIONS
Water is supplied to the pump from an external source, normally a garden hose. To safely and efficiently use
the pressure washer, follow this procedure:
1. Connect the water hose (not supplied) to the inlet swivel ring at the water tap.
IMPORTANT!
Recommended garden hose length not more than 25 feet.
2. The water supply should be pressurized (not exceeding 125 PSI or 860 kPa) or be gravity fed.
IMPORTANT!
If the water is used from an open source, use extra screens and a filter to remove all
grit and contaminants.
3. A water supply must meet the following specifications:
a) Must be capable of supplying a flow rate more than the pump rated flow rate.
b) Do not allow the inlet water temperature to exceed 140
°
F (60
°
C). Water that exceeds this
temperature can damage the seals on the pump and cause leaks.
3.6.2 ADDITIVES
1. Additives can be introduced into the water only when it is being used in the low-pressure mode (i.e.
less than 500 PSI or 3400 kPa).
IMPORTANT!
Do not use acids or gritty material in the dispensing
system. If your spray solution must be made up from a dry chemical, ensure that it is completely
dissolved and stays mixed.
2. Place the additive (detergent, soap, germicide, etc.) into the container
3. Close the injector valve by turning it clockwise.
4. Open the injector valve a little by turning it counter-clockwise. More additive is allowed into the stream
of water as the valve is opened.
5. The amount of chemical drain per minute and its ratio to water depends on the chemical viscosity and
water pressure. To determine the exact amount of additive, the system will have to be calibrated (refer
to Section 3.6.3).
