Lakeside Water LWTSF Series water softeners shall be designed specifically for hardness (calcium and magnesium) and iron removal. Provide as indicated a factory assembled vertical pressure type filter system shipped with manifold piping attached to the softener tank for ease of installation and start up. The system shall be of an approved design as fabricated by a manufacturer regularly engaged in the production of water treatment equipment for a minimum of 20 years. All equipment and materials shall be supplied in compliance with the specifications as intended for a complete and operational system.
The system specifications are based on LWTSF Model_____________________.
Influent Water Analysis
Total Hardness ___________________ GPG as CaCO3
Iron (Fe) ___________________ ppm as Fe
Turbidity (NTU) ___________________
Effluent Water Quality Zero GPG Hardness
(ASTM Soap Test Method)
Continuous System Flow & Pressure Drop ____ GPM @ ____ psi
Peak System Flow & Pressure Drop ____ GPM @ ____ psi
Daily Water Usage __________ Gallons/Day
Daily Hours of Water Demand __________ Hours/Day
Operating Temperature Range ______ Min. _____ Max. F
Operating Pressure Range ______ Min. _____ Max. PSIG
Electrical Requirements Amps____ Volts ____ HZ.______ Phase_______
Softener Tanks Qty _____ Diameter____ Inches/Side shell_____ Inches
Service Valves Size _____ Inches Type _________________________
Softening Resin Qty. _____ Cubic Feet/Tank Qty. ______ Cubic Feet/ Total
Brine Maker Qty. ____ Diameter _____ Inches/ Height _____ Inches
Salt Storage __________ Pounds
Regeneration Type (Time Clock) (Metered) (Other________________)
Water Meter (s) Qty ____ Size ____Inches Type _________________
The softener pressure vessel shall be FRP industrial grade polyester / composite construction, conforming to non-code construction. The vessels shall be in accordance with ASME section VIII designed and factory tested for 150 PSIG working pressure with a temperature range of 35F -110F. The vessels shall be sized to allow 50% expansion during backwash without media loss. The tanks shall have threaded or flanged connections and include one non-corrosive drain down valve on each vessel. Tank options shall include vessels be in accordance with ASME section VIII and shall be available from manufacturer.
Softeners tanks shall be equipped with the hub and radial design distribution system. The individual radial arms shall be constructed of high impact Schedule 80 PVC material slotted 0.010" to prevent media loss. The distribution system shall include a dilute brine hide-out preventer covered with a sub-fill of 1/8 x 1/16 pre-washed gravel.
The resin shall be premium quality, strong acid, sodium form cation exchange resin. The resin will be bead-form, 8% cross linked polystyrene sulfonated cation exchange resin. The capacity of the resin will be a minimum of 30,000 grains/cu. ft. when regenerated with 15 lbs of salt and operated at standard conditions. The resin shall not add color to the water and must comply with FDA regulations paragraph 173:25 and be approved by the U.S. Department of Agriculture.
MAIN CONTROL VALVES
The main operating valves shall be a nest of individual diaphragm valves on vessels with 3" piping and under. These valves shall have glass-filled Noryl thermoplastic Y-pattern bodies, Buna-N diaphragm and brass internal parts. The valve shall be slow opening and closing, and free of water hammer. On softeners with the inlet/outlet service valves utilizing butterfly valves, manufacturer shall provide lug style bodies, EPDM seats, aluminum-bronze discs, stainless steel stems and double-acting pneumatic actuators. All operating valves shall be slow opening and closing, and free of water hammer. There shall be no contact of dissimilar metals within the valves and no special tools shall be required to service the valves. Diaphragm valves can be operated either hydraulically or pneumatically. Systems with butterfly valves shall require a clean source of instrument air (80 psig minimum).
PIPING & FITTINGS
The main operating valves and manifold piping shall be factory assembled and shipped attached to the resin tank for ease of installation and start-up. Piping 3" and under shall be Schedule 80 PVC. Boiler drain valves and rack style pressure gauge packages shall be provided for fast and easy diagnostics and service. Sample valves shall be provided on the inlet and outlet piping or diaphragm valves. The standard pressure gauges are 2.5 inch diameter liquid filled with brass wetted parts and stainless steel case. The sample valves are ¼ brass ball valves.
An automatic backwash control shall be provided to maintain a proper backwash and fast flush flows over a wide variation of operating pressure. Controller shall contain no moving parts, and require no field adjustment.
Transfer of diluted brine to the softener vessel shall be via a venturi type injector. The eductor shall be a flexible flow control orifice constructed of schedule 80 Polyvinylchloride with a precision molded Buna. The eductor shall be a self-adjusting compensator to convey brine at the correct flow rate regardless of the variations of water pressure. The operating pressure range shall be 30 -120 psig. The maximum temperature shall be 100 Fahrenheit.
Time Clock (single) Option
The 110 volt electronic cycle controller shall be mounted in a NEMA 4X fiberglass enclosure with a microprocessor that is adjustable to initiate regeneration at any hour of the day and any day of the week.
Electronic cycle controller (Twin Alt.) Option
The single or twin water softener shall be equipped with a single meter in the outlet piping. When the user specified volume is reached, the meter will send a Hall Effect signal to the NEMA 4x fiberglass panel that will direct the softener in the stand-by position into a pre-rinse cycle to eliminate the possibility of hardness carryover due to extended off line time. After completion of this cycle, the controller shall direct the softener into the service mode. This system shall produce a continuous supply of soft water. Regeneration from this controller shall be initiated by pushbutton, time clock, flow meter or from a remote location.
Progressive Demand Parallel Option
A sophisticated programmable microprocessor shall be provided to operate single, twin, triple or quadruple systems. Multiple tank application, progressive demand and diagnostic capabilities shall be the premiere features. The progressive demand application shall allow one to four softeners to be online in proportion to the service demand. One softener shall always be in service, and the other units automatically come online as the flow increases. As the flow rate decreases, softeners shall be removed from service based on the pre-programmed GPM settings. One stager for each vessel shall be equipped to provide operating pressure, (hydraulic or pneumatic), and for control of automatic valves installed on each vessel. The stagers shall be mounted in a NEMA 4x fiberglass enclosure. Solenoid pilot valves shall be mounted in the enclosure panel and used to regulate the service outlet valves on the parallel/demand control systems. This system shall provide uninterrupted flow of soft water 24/7 during variable and peak flows of the facility. (One auxiliary output shall be provided to start a chemical feeder, pump or motor application)
Allen Bradley PLC Controller Option
The control system shall utilize an industrial programmable Allen Bradley logic controller (PLC) to automatically cycle the control valves through the regeneration program. The programmable controller and operator interface shall cycle electric solenoid valves, which shall control the opening and closing of the control valves either hydraulically or using compressed air. Allen Bradley control packages shall be equipped with a 6” HMI and an “EZ” color touch screen that provides extremely user friendly programming. The PLC solenoid operated system shall include features: hold, advance, resume, terminate or close of all valves function, for fast, easy field service. The main screen shall be designed to display a variety of parameters that include batch, totalization, and current flow rates, on line tank status, regeneration cycle time remaining and remaining gallons of each vessel. A pre-rinse cycle shall be programmed in to eliminate the possibility of hardness carryover. The AB 10/100 IP Ethernet Network Connection port shall be provided for building management capabilities. The operator interface shall be password protected, and provided with a battery backup. Regeneration from this controller shall be initiated by pushbutton, time clock, flow meter or from a remote location. Custom programming and alternate communication protocols shall be available from the manufacturer. Air actuated solenoids shall require customer compressed air that is clean and dry with a minimum 80 PSIG and a volume of 1-2SCFM.
The brine systems under 60" diameter shall be a wet salt combination salt storage-brine measuring type, and systems 60" and up shall be a wet salt type. All shall have sufficient capacity for at least four softener regenerations at full salting. The tanks under 60" shall be polyethylene, and tanks 60" and over shall be FRP construction. Systems less than 60" shall have a platform, brine well and a combination brine/refill valve that shall have four primary checks to prevent excessive brine draw or refill. PLC controllers shall use a two switch float system for precise control of brine draw and tanks re-fill. The combination brine valve or switch floats shall be field adjustable for varying salt dosages.
Water meters shall be provided to initiate regeneration based on water use to increase salt efficiency and prevent hard water bypass during periods of high water use. A 2” Electronic meter housings shall be constructed with 30% glass filled Noryl using a polypropylene turbine impeller. The accuracy shall be + or - 3% of reading using a Hall Effect switch. A pressure drop of 1.5 psi @30GPM and maximum water temperature shall be less than 100F.
Flow sensors 2-1/2” and above shall be highly repeatable and have open collector signal with a wide dynamic flow range of 0.1 to 6m/s. Electrical requirements shall consist of: Supply voltage 5 to 24 VDC, supply current <1.5 mA @ 3.3 to 6 VDC / < 20mA @ 6 to 24VDC. Output collector, sinking 10 mA max.
The following options are available to meet specific application requirements:
Brine Recovery System Option
The water softener system shall include additional piping, valves and control features to recover usable brine discharge during the brine and rinse regeneration cycle. This will be diverted to the brine tank for reuse during the next regeneration. This feature shall provide a salt usage reduction of up to 25% and reduce waste water to drain.
The softener shall be equipped with an automatic brining system that utilizes a wet salt storage and brine measuring tank. The brine system shall include a non-corroding fiberglass or polyethylene tank and PVC eductor. The brine valves shall be non–corrosive thermoplastic float operated or two switch floats for positive control and accurate brine measurement. Pumped brine and dilution stations shall be available from manufacturer for pit silo applications.
Skid Mounted, Pre-piped and Pre-wired Option
The softener mineral tanks shall be skid mounted on a 4" or 6" channel carbon steel skid. The skid shall be cross-braced with 4" or 6" channel or angle iron with legs for an elevated skid. All steel surfaces shall be coated to the match exterior of softener tanks. All interconnecting piping shall be the same material as the valve nest manifold piping, and shall be assembled to the fullest extent possible. The inlet and outlet isolation valve connections, brine and drain headers shall terminate inside the skid internal area. All piping shall be suitably supported and anchored to the skid. All electrical wiring shall be complete between the units, and the hydraulic or pneumatic tubing shall be installed as part of the skid package. The entire skid mounted system shall be fully tested as a unit by the manufacturers designing engineer before shipment.
ASME Code Vessels Option
ASME Code Section VIII stamped and certified construction. Working pressure vessel ratings of 150psi shall be available on either non-code or ASME code constructed vessels.
Special Linings and Coatings Option
Chemical resistant Vinylester resins shall be offered by the manufacturer.
Internal Distribution Option
Stainless steel, type 304 or 316, constructed distribution assemblies shall be available for increased internal distribution life and protection against hot water back up from heating systems that can cause loss of resin media due to distribution failure. The distributors shall be designed using non-clogging logarithmically spaced collector orifices welded at every intersection of vertical rod and surface wire with stainless steel wrapped screen.
Three (3) complete sets of installation, operation and maintenance manuals shall be provided.
Attrition loss of mineral is guaranteed not to exceed 3% per year for a period of three (3) years. All mechanical and electrical equipment is guaranteed for eighteen (18) months from date of shipment or one (1) year from date of service against any defects in workmanship or material. Any part proving defective shall be replaced or repaired within this period at manufacturer’s option. The manufacturer guarantees that under actual operating conditions the mineral shall not be washed out of the system during the service run or backwashing period; and that the turbidity and color of the effluent by reason of passing through the softener system, shall not be greater than the incoming water; and that the underdrain system, gravel and minerals shall not become fouled, either with turbidity or by dirt, rust or scale from the softening system while operating as noted in manufacturer’s instructions.
Pressure Range – 30 psi to 150 psi maximum
Temperature – 35 to 100 degrees F.
Electrical – Standard rating is 110 volt 60 hertz, 1 phase with NEMA 4X enclosures
Drain piping limits: Max. 10ft vertical and discharged to an atmospheric floor drain sized to handle the backwash rate of the system. (Max. proven length is 25ft.)
**Specifications Subject to Change without notice.
Address: 7869 N. 73rd St. Milwaukee, WI 53223, Phone: 414.365.0787 Fax: 414.365.0248 Email: firstname.lastname@example.org