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The high pressure water (usually between 1000 and 3000 psi) leaves the pumping unit and travels through a network of piping to the areas where high pressure cleaning is required. The termination points of the pipe are vertical drops approximately five feet from the ground and usually consist of a CS-1 Cleaning Station with a quick disconnect. The CS-1 allows for the introduction of cleaning chemicals into the high pressure water stream where it is discharged through a high pressure hose assembly with a trigger gun and wand.
The system is controlled by an automatic stop/start circuit (trigger gun activated) consisting of a flow switch wired to the pump motor control. Once the trigger gun is activated, the flow switch senses a demand for water and signals the control to start the pump motor; with hot water systems the heater is now automatically engaged. Depending on how much piping is used in the distribution system the entire process, whether one or more trigger guns are activated, usually takes place in less than a second. A timer automatically shuts off the centralized pressure washer after 10 to 15 seconds if no high pressure water is called for, preventing excessive stops/starts with multiple gun systems.
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