How do I switch the machine to low pressure?

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To switch the machine to low pressure, fit the vari-pressure lance to the gun and pull the end of the lance out approx. 5mm. The machine will now function at low pressure, applying detergent in low pressure has two advantages. First, if the detergent were applied in high pressure, it will splash off, resulting in wasted solution. Secondly, because detergent injection only works in low pressure, you can change from low pressure to high pressure at the wand, instead of going back to the unit to engage detergent injection.