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Rejection of Quote - Studebaker Fountain Water Improvements Proj No. 121-032 - Culligan Water
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Rejection of Quote - Studebaker Fountain Water Improvements Proj No. 121-032 - Culligan Water
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2/10/2022 9:40:25 AM
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2/10/2022 9:39:45 AM
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Board of Public Works
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Projects
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2/8/2022
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<br />Version 08/25/2021 Page - 20 Public Works Quote <br />piece seal/ spacer stack assembly, and have an internal brine piston. Two (2) Control valves <br />required. Control valves that do not meet these specifications are not acceptable. <br /> <br />e. INTERLOCK WIRING: All interlock wiring between controls must be pre -wired and electrically <br />tested by the water softening system manufacturer at the factory prior to shipment. <br /> <br />f. MICROPROCESSOR CONTROLLER: The 24-volt solid state microprocessor shall have allow <br />for easy access and remote mounting. The system shall be capable of operat ing as single, <br />twin, design systems in an alternating fashion, parallel with multiple units on line at one time <br />or as a demand recall/stage by flow system. The display shall be able to show time of day, <br />current flow rate, total gallons used and volume remaining/days until regeneration, it shall be <br />capable of initiating regeneration via meter delayed, meter immediate, time clock delayed or <br />pressure differential. All cycle times shall be fully programmable and be capable of providing <br />up to nine maximum cycle sequences including multiple cycles for each of the following: <br />backwash, brine (a separate cycle from slow rinse) slow rinse, fast rinse and brine tank refill <br />with treated water on either a pre-fill or post-fill basis. It shall be capable of operating on an <br />optional clock basis with either a 7-day calendar or 28-day calendar, along with an optional 1 <br />– 28 day calendar override and have up to (time periods) for regeneration to occur for either <br />time clock or demand regeneration. <br /> <br />Optional programming shall allow for pre-programming a multiple regeneration sequence in <br />which the microprocessor can adjust the salting level automatically every so many <br />regenerations, turn on a chemical feed pump to sanitize the media bed …etc. without any <br />manual intervention. Two relay outputs shall be provided and controlled by the microprocessor <br />to allow output signals based on time, a specific regeneration cycle window or volume of <br />processed water from the meter output signal. The microprocessor must be capable of adapting <br />to any external meter that provides an electronic pulse and be able to control up to four units <br />and be able to add a second, third or fourth unit at a later date if needed to adjust to increased <br />water usage demand. The diagnostics shall be capable of providing data days since last <br />regeneration, gallons or gallons x 1000 since last regeneration, reserve history for the current <br />day and previous 6 days, total volume processed for the current day and the previous 63 days <br />by daily total and hourly, the peak flow rate for each of the last 28 days of operation along with <br />the time of day for each day that the peak flow rate occurred, peak flows may also be viewed <br />by the hour along with total volume processed through the unit. Indicator lights on the <br />microprocessor shall indicate whether the unit is on line, in regeneration or on standby. <br />Systemmate Controller to be used to monitor and record the flow rates of the system the flow. <br /> <br />g. REGENERATION SEQUENCE: Up to nine maximum cycle sequences including multiple <br />cycles for each of the following: backwash, brine (a separate cycle from slow rinse) slow rinse, <br />fast rinse, and brine tank refill with treated water on either a pre -fill or post-fill basis. All <br />regeneration cycles shall be adjustable and may have multiple occurrences. <br /> <br />h. METER: -----2” electronic meters shall be incorporated into the control valves. Each meter <br />shall be accurate from 1.5 – 150 gallons per minute at +/- 5%. <br /> <br />i. DEMAND RECALL: Demand recall systems utilize motorized alternating valves (MAV) for <br />demand recall purposes. The motorized alternating valve (MAV) shall be a 2” ported solid lead <br />free brass 3-way valve with an electro-deposited epoxy coating NSF food grade material to <br />protect against corrosion. The MAV allows multiple control valves to become a mult i-tank <br />demand recall/ stage by flow system with one unit on line and the remaining units on stand -by <br />or in regeneration. Note: only one unit is in regeneration at a time. It will provide no hard water <br />bypass and the choice for treated water regeneration if desired. The MAV offers piping <br />connections either 2” female pipe thread connection or you can use the 2.5” groove lock. The <br />poppet valve internal design and its full 2” ports provide high flow rates with minimal pressure <br />loss. The drive 24 Volt drive system is powered by the control valve so no extra power source <br />or supply is necessary. The MAV has a sight glass that allows you to view the position of the <br />valve to know which valve is on line and which is on stand by without removing any covers. <br />Multi-tank demand recall/ stage by flow systems will have a MAV installed on each control valve <br />with one port plugged. The demand recall/ stage by flow systems use a predetermined flow
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