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Vaporicss Manufacturing, Inc. <br /> 8700 E. Long Mesa Drive <br /> Prescott Valley,AZ 86314 <br /> 520 775-5191 * 800 367-0185 * FAX 520 775-5309 <br /> December 16, 1999 <br /> George Takemori <br /> Teichert& Son, Inc. <br /> PO Box 15002 <br /> Sacramento, CA 95851 <br /> Ph: 916 386-6916 <br /> FAX: 916 386-1256 <br /> Pages: 2 <br /> Dear Mr. Takemori: <br /> I received your FAX and am making the assumption that you are not having problems <br /> with the smaller horsepower pump that shares sump number 1. Therefore, I will address <br /> what I believe your problem is with the 5 horsepower pumps. <br /> I understand that pump#2 is delayed 15 seconds after pump# l comes on. I understand <br /> that there is no solenoid where piping comes above ground. I understand there is no ball <br /> valve where piping comes above ground. <br /> A VMI LD-3000 leak detector works in the following way: Assume that line pressure is <br /> 0 psi. The pump is turned on. The leak detector is in the `Reset' position, allowing 1I/2 <br /> gallons per minute to pass through it, re-pressuring the line. When line pressure reaches <br /> 21 psi, the leak detector moves to the`Leak Search' position and allowing 2 gallons per <br /> hour to pass through. When the line pressure reaches 24 psi, the leak detector moves to <br /> the `Full Flow' position. All of this occurs in just 7 to 10 seconds. The leak detector <br /> stays in `Full Flow' until the line pressure drops to approximately 7 psi, at which time the <br /> leak detector drops back to the `Reset' position. <br /> As I see Drawing# 10710, what is probably occurring is the driver hooks the bottom <br /> loader up and starts the pump. Pump# 1 turns on, whatever pressure is being held in the <br /> line immediately drops to almost 0 psi and the leak detector goes to the `Reset' position, <br /> allowing approximately 1 '/2 gallons per minute to pass through,it. 15 seconds later, <br /> pump#2 turns on. <br /> That leak detector is also in the 'Reset' position and also allows approximately 1 1/2 <br /> gallons per n)iniute to pass through it. Line pressure never has the opportunity to build up <br /> to 21 psi to allow either leak detector to even reach the `Leak Search' position, let alone <br /> the `Full Flow' position, <br />