Western Water Products
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Western Water Products
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1.0 Reverse Osmosis (RO) Spot Free Rinse System General Specifications: 1.01 Performance: The Reverse Osmosis Spot Free Rinse Water Equipment shall be of the type supplied by Western Water Products, or an approved equal. The Reverse Osmosis System shall be sized for a minimum RO Production as required by the application (example: 5000 GPD or 50 Gallons x 100 Buses) and shall be capable of producing Spot Free Rinse Quality Water for use with an Automatic Wash or with Hand Held Wands and shall come complete with a pump of suitable size to provide the volume and pressure required by either a Free-Standing RO Rinse Arch in a drive-through wash or by a separate supply line on a gantry style wash and shall be capable of rinsing all sides of the vehicle as it exits the wash bay and passes underneath the arch or during the final gantry spot-free rinse pass. 1.01.01 Water Source and Brine Discharge: The Reverse Osmosis System shall operate from a supply of fresh water. Brine Discharge water from the RO System shall be returned to the water recovery system holding tank for secondary use if possible. A water Softener is commonly used to soften the water prior to introduction to the RO System. 1.02 Console Mounted Filtering and Pumping Station: The Reverse Osmosis Plant shall contain the necessary pre-filter, water stabilizer, carbon filter, Reverse Osmosis Filter and pump motors capable of producing the required GPD Production of Spot Free Rinse Quality Water. See Data Sheet for additional on PC-RO for selection information. 1.02.01 Cartridge Filters: Two five (5) micron filters shall be plumbed in parallel such that one is on line while the other is being cleaned or replaced. All filter housings shall be made of corrosion resistant material or painted steel, be capable of handling up to 150 psi and have a 5 micron filter cartridge that is cleanable and impervious to common wash chemicals, trace oils and other vehicle wash water contaminants. Each cartridge must be easily removable for cleaning or replacement. 1.02.02 Reverse Osmosis Membrane: All rinse water Reverse Osmosis (RO) membranes shall be of thin film composite structure. They shall be constructed such as to have a minimum of a 50% rejection rate and a minimum of a 2:1 recovery rate. Each RO vessel shall be made to withstand a minimum of 200 psi. All contaminants with an ionic structure larger than water shall be repelled. Constant membrane cleaning shall be accomplished by assuring the proper water velocity and Reynolds number on the membrane surface. All make up water must also be processed such as to enhance membrane cleaning. 1.03 Diagnostic/Indication Features: As a minimum requirement the system shall come equipped with Inlet and Pressure Gauges, Production and Reject Meters and Water Quality Indicator Lights. 1.04 Rinse Water Holding Tank: Separate tank(s) sized per application shall be provided to hold RO "Product" Rinse Water for use during the rinse process and 24 hour rinse cycle. Water shall be supplied from the RO System to this tank. An overflow to sewer shall be provided to accommodate any overflow of water back to the clarifier. A manual discharge valve shall be provided on the holding tank for servicing or cleaning purposes and shall also be connected to a drain back to the clarifier. Water shall be supplied to the rinse arch via the RO system repressurization pump. 1.05 Rinse Arch: If required by the application, an optional rinse arch shall provide 25 GPM water at 40 PSI minimum pressure through a series of 1" schedule 80 PVC pipes each having a minimum of 15 stainless steel nozzles rated at 1 GPM at 40 PSI with 50 degree spray pattern angle such as to assure adequate coverage of the front and rear of each vehicle while the vehicle is under the rinse arch. The arch is to be either free standing and made of 3" x 3" steel tubing hot dip galvanized to ANSI standards or mobile as part of a gantry system. It is to be fed by a single 1" solenoid valve located such as to feed all nozzles on the arch equally. 1.06 Arch Control: The primary electrical signal voltage to activate the rinse arch solenoid shall be supplied as part of the wash equipment control package. As an option for a drive-through wash, the rinse arch can be automatically controlled by a pair of waterproof photoelectric cells. The photocells shall connect to a NEMA XII, non-metallic, corrosion proof electrical panel. There shall be an oil/water tight, protected "ON/OFF" selector switch, an oil/water tight "SYSTEM ON" industrial sized, green indicating light and an oil/water tight "EMERGENCY OFF" red push button on the face of the panel. The photoelectric cells shall be connected in such a manner to the electrical panel so that the RO Arch sprays water only while there is a vehicle present under the RO Arch. The panel shall include two timers: the first timer shall be adjustable up to one minute and be the "delay start" timer for the rinse arch to prevent nuisance tripping by some one inadvertently walking in front of the photo cells. The second timer shall be adjustable up to 3 minutes and will control the maximum length of time the RO Arch will operate. The "EMERGENCY STOP" button, when pushed, shall stop the operation and return all timers to their initial "OFF" position until reactivated by the "START" button. 1.07 Instruction Manuals: The system shall come with (2) sets of instruction manuals complete with a description of operation of the system as well as all major components, with a complete parts list showing manufacturer's names and part numbers of all major buyout components, with a complete trouble shooting guide and with a complete diagnostic guide. 2.00 Construction Materials and Specific Specifications for Major Components: 2.01 RO Console Frame and Housing: The console frame and housing shall be made of steel and shall be completely painted with a polyester powder coat paint to provide maximum resistance to corrosion in an outdoor environment. The frame shall be constructed with a steel framework capable of supporting all components. The plumbing connections for incoming and outgoing water shall be located to allow easy access for installation and service. All plumbing connections shall be supplied with the proper fittings. All plumbing within the console shall be PVC or flexible hose. All electrical connections will consist of UL approved plugs and cords or be routed through conduit where necessary. 2.02 Above Ground Tank: Above Ground Tanks shall be supplied to store RO Product Rinse Water to be used during the day. Additional Above Ground Tanks may be supplied to hold RO Discharge Water if required by the application for secondary usage of the Discharge Water in another process of the application. All tanks shall be made of a chemical inert, corrosion resistant, material such as cross-link polyethylene. This material shall pass an impact test of 120 foot pounds at minus forty degrees Fahrenheit per Phillips test SSL-193. Every vessel shall be capable of containing 12 pounds per gallon liquids without rupturing. This material must resist stress cracking and provide a minimum of ten years life and be warranted for a minimum of five years. It shall be a completely enclosed vessel and shall incorporate a cover made out of similar material to allow access for service or inspection. 2.04 Pumps and Motors: Each pump motor must be designed to the latest in NEMA standards. It is to be properly housed and protected within the system to ensure that no contaminants enter the motor to shorten its life. It shall utilize the latest in Class B insulating technologies and be built for severe environmental duty applications. It shall utilize non-regreasable ball bearings to minimize maintenance and ensure contamination-free bearing life. It must be built to NEMA standards MGl-12.53.A and be U.L. recognized with approval per E-46145. All steel components are to be coated with rust inhibiting undercoat and an overcoat of durable enamel. All rotors are to be coated with a rust inhibitor and the motor must use non-hygroscopic Class B or better varnish impregnated windings. The motor is to be oversized so that it will not be taxed, to allow it to run cooler, draw less than nameplate amps and extend its life expectancy. The motor shall be rated to run continuously 24 hours a day, have CSA approval and be batch tested for efficiency performance per I.E.E.E. 12A Method B. 2.04.01 Pumps must be designed and built to handle the water quality being handled at each point in the system. They must also be sized to provide the proper flow and pressure demanded by each process in the system. Pumps must have proper seals and bearings and an efficient reliable proven impeller construction. All pumps shall have a ruggedly constructed high tensile strength housing suitable for the application. Pumps shall have a sealed lubrication system for the pumps chamber with easy access to provide lubrication to the pumps seal when necessary. 2.05 Valves: All valves are to be made of high quality materials suitable for the environment. Each valve is to be properly sized to meet its application requirement and ensure the minimum amount of pressure loss in the system where pressure is a vital consideration. All valve installations must be located and plumbed such that they can be easily replaced, if necessary. 2.06 Automatic Valves: All automatic valves must be built such that their electrical connections are suitable for the environment and meet N.E.C. and I.E.E.E. codes. The operation of each valve shall be sequenced by the system PC controller and be easily re-programmable if functional changes are required. All automatic valves are to be rated for high cycling industrial applications. 2.07 Electrical Panels: The control panel is to be mounted to the console and shall be housed in an adequately sized corrosion resistant housing. The housing shall be adequately sealed to prevent the entrance of moisture and a direct spray of water. 2.08 Testing: Each major component shall be tested prior to shipment from the factory. The complete console shall be pressure and electrically tested. The factory-assembled portion of the system shall be thoroughly checked for leakage. Each unit shall be accompanied by an inspection "check list" showing what inspections have been performed and shall be "signed off" by the inspector. This test shall include the operation of all floats, valves, signal and diagnostic indicators. Pressure and flow rates shall be checked to assure that all plumbing connections, hoses are properly applied and all valves function as they should.
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Western Water Products
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