Design and Performance 2.1 Sterilizer must operate at flow rates to achieve a minimum UV dose of 410,000 micro-watts-sec per square centimeter at end of lamp life with a minimum UVT of 97% including a (ten) 10% safety factor. Flow rate: 410mj/cm2 for 300 GPM. 2.2 The UV reactor must accept its respective UV lamps through only one end of the vessel. 2.3 All electrical connections to the unit's lamps must be made only on one end of the unit. 2.4 Lamp cable length must be thirty feet (30’). 2.5 Pressure drop across the sterilizer, from inlet to outlet, must be no greater than five (5) psi when operated at an intensity of 410,000 micro-watt-sec per square centimeter. 2.6 Maximum design operating pressure shall be greater or equal to 135 psi; test pressure shall be no less than 170 psi. 2.7 Temperature limitations are from 35°F to 80°F process water temperatures at ambient air temperatures from 25°F to 100°F. 2.8 Water flow pattern must have proven performance to create sufficient turbulence to assume full exposure to ultraviolet rays. 2.9 Proof of UV dose vs. water flow rates must be able to be demonstrated using industry accepted calculation methods, (Bolton Photosciences UV Cale modeling program recognized by the United States E.P.A.), and be provided for review at time of submittal. 2.10 Minimum lamp life under the specific design ratings must be 16,000 hours to 80% UV-C output. 2.11 The unit must not require cooling fluid to prevent overheating but rather be equipped with an automatic overtemperature lamp power cutoff switch feature that will keep the unit from being damaged by excessive heat during a no flow situation. Units shall be equipped with an automatic over-temperature lamp power cutoff switch feature the cutoff temperature shall be 120 degrees F. 2.12 The UV Sterilizer must be powered by one electronic power supply. 2.13 The electronic power supply must not be frequency dependent. 2.14 Power supply must be 208-230-volt, 60 Hz, single-phase.
