Most high-pressure applications are the single highest consumer of water in your tunnel. In order to reduce fresh water consumption costs, many will use their reclaim water in their high-pressure applications. Be mindful though, as reclaim water will have particles in it that will reem your nozzle tip orifices prematurely (the amount and severity that the nozzles wear depends heavily upon the reclaim water quality). If you've maxed out the volume on your pump from day one, as the tip orifices open up due to wear, you'll quickly go beyond the volume capacity of your pump, causing premature wear and/or failure of your pump.
Many manufacturers provide zero degree, or zero degree aerated nozzles in order to provide maximum water distance & impingement while reducing required pressure. Usually, the use of this style of nozzle instead of a fan-jet meg style or turbo style nozzle will allow the pressure setting on the high-pressure pump to be reduced from the maximum setting without losing the necessary impingement for effective cleaning.
Ideally, we can achieve effective cleaning without having to max out our volume or pressure capacities. By reducing the volume required to approximately 80% of the pumps capacity, we can greatly extend the life of the pump. For example, if we had an H25 Single Pumping Station to support a set of Spinners which have 10 nozzles, we could size the tips at 1.79gpm each (or Size 04). At 800psi, this would equate to 17.9gpm total usage:
Following this rule along with the manufacturer's recommended maintence will help ensure a long life from your pump and increase your return on investment.
Bryan Hage has been a guest instructor at CarWash College since its inception in 2006 and is the National Accounts Manager for Sonny's The CarWash Factory. Prior to joining Sonny's in 2004, Bryan spent seven years in car wash operations concentrating on recruiting and training for the largest full service car wash chain in the US. Bryan can be reached a BHage@Sonnysdirect.com.
For more information about CarWash College certification programs, visit www.carwashcollege.com or call the registrar's office at 1-866-492-7422.