CSM Filter Engineer's Specification

AUTOMATIC WATER FILTER
CSM Series / CUSTOMER:
DATE:

1.0SCOPE

1.1Provide as indicated a vertical pressure type water filter system complete with pressure vessel, filter media, control valve, and electronic controller. The system will be of an approved design as fabricated by a manufacturer regularly engaged in the production of water treatment equipment. All equipment and material will be supplied in compliance with the specifications as intended for a complete and operational system.

 (Open Bidding Arrangement)

1.2Qualified manufacturers of water treatment equipment of the type specified are Culligan International Company or the Engineer’s approved equal.

 (Closed Bidding Arrangement)

1.2Qualified manufacturers of water filter equipment must be engaged in the manufacture of this equipment for a period of not less than fifteen (15) years. Acceptable manufacturers are Culligan International Company or the Engineer’s approved equal.

2.0GENERAL DESCRIPTION

 (Selection for statement of specific model)

2.1The system specifications are based on Culligan International model ______.

(Depth Filter)

The purpose of the Culligan International Series CSM automatic depth filter will be to remove suspended solids from a known water supply to a level not to exceed 10 microns in size, when the system is operated at ______gpm and in accordance with the operating instructions.

(Carbon Filter)

The purpose of the Culligan International Series CSM automatic carbon filter will be to remove tastes and odors, reduce organics and/or remove chlorine from a known water supply, when the system is operated at ______gpm and in accordance with the operating instructions.

(All)

The systems performance is rated at a design flow rate of ______gpm with a rated pressure drop of ______psi, and will be capable of a peak flow rate of ______gpm for sustained periods of 90 minutes with a pressure drop of ______psi.

There shall be a quantity of ______of the above described systems.

 (Selection for general statement)

2.1The system, in compliance with the equipment specification, is described as an automatic ______water filter system meeting the performance and design data requirements as hereinafter specified.

3.0PERFORMANCE AND DESIGN DATA

3.1INFLUENT WATER ANALYSIS

Free Chlorine:(Carbon Only)

(Constituents above are expressed in ppm or mg/l.)

Turbidity, NTU:

Color:

pH:

3.2DESIGN PARAMETERS

Normal System Flow & Pressure Drop: gpm @ 15 PSI

Maximum System Flow & Pressure Drop: gpm @ 25 PSI

Backwash/Rinse Flow: gpm

Backwash Volume: gallons nominal

Daily Water Usage: gallons per day (gpd)

Daily Hours of Water Demand:

Operating TemperatureRange:33–100F

Operating PressureRange (System):30–100 PSI

Electrical Requirements:24 Volts AC, 50/60 Hz, 1 ph (dedicated receptacle req’d, ref ¶ 4.6)

System Dimension (L x W x H):”L x ”W x ”H

4.0EQUIPMENT SPECIFICATIONS

4.1FILTER TANK(S)

Each system shall include _____ tank(s). Each filter tank shall be _____ inches in diameter. The sideshell height shall be _____ inches, sufficient to allow for proper freeboard space above the filter bed for adequate expansion of the media during backwashing.

4.1.1 Tank Construction

 (Standard vessel)

Tank(s) shall be electrical welded pressure vessel quality low carbon steel construction rated for 100 psi working pressure and a minimum design pressure of 1.2 times the working pressure amount. Additionally, the tank(s) shall be capable of withstanding testing with pressure fluctuations from 0 to 120 psi for a minimum of 30,000 cycles.

(ASME vessel)

Tank(s) shall be electrical welded pressure vessel quality low carbon steel construction rated for 125 psi working pressure and hydrostatically tested at 1.3 times the working pressure rating. Tank construction shall conform to the latest edition of Section VIII for ASME Code pressure vessels and shall be so stamped and certified.

4.1.2 Access Openings

 (Steel and ASME vessel)

Each tank will be equipped with openings for mineral filling and periodic inspection.

4.1.3 Tank Finish – Exterior

Tank finish on the exterior shall be a high solids polyurethane monochromatic gloss enamel applied to a 1.25 to 1.50 mils DFT over a 1.00 to 1.25 mil DFT prime coat.

4.1.4 Tank Finish – Interior

Tank interior shall have near white sandblast and be coated to 8 to 10 mil DFT with an epoxy phenolic designed specifically as a high chemical resistant, non toxic, odorless protective coating. The lining shall meet the requirements of the US Federal Register, Food and Drug Regulations, Title 21, Chapter 1, Paragraph 175.300.

4.1.5 Tank Supports

 (Steel and ASME vessel)

Tank supports shall be structural steel strap leg type welded to lower tank head.

4.2INTERNAL DISTRIBUTION

4.2.1The upper distribution system shall be of the single point baffle type, constructed of Schedule 40 galvanized steel pipe and fittings.

4.2.2The lower distribution system shall be of the hub and radial arm type, constructed of PVC pipe, a hub radial and individual distributors arranged for even flow distribution through the resin bed. No distributor slots will face upwards to minimize the opportunity for channeling. The distribution system shall be embedded in a single layer subfill of washed inorganic material to support the resin bed.

4.3MAIN OPERATING VALVE

The main operating valve shall be a fully automatic multiport diaphragm type. The multiport design shall incorporate all valves necessary for complete control of the filter service and reconditioning steps.

The diaphragm valves shall be slow opening and closing, free of water hammer. The diaphragm assembly shall be fully guided on its perimeter to assure a smooth reliable shut off without sticking. There shall be no dissimilar metals within the valve and no special tools shall be required to service the valve.

The main operating valve shall be designed and manufactured by the same manufacturer as the water filter system and will be fully tested prior to shipment.

 (Single units only – untreated water bypass)

The unit shall be supplied so that the valve will allow automatic bypass of untreated water during reconditioning. The bypass shall be integral to the main operating valve body and be capable of being easily modified to prevent untreated water bypass.

 (Single units only – NO untreated water bypass)

The unit shall be supplied so that the valve will not allow automatic bypass of untreated water during reconditioning. The bypass shall be integral to the main operating valve body and be capable of being easily modified to allow untreated water bypass.

4.4PIPE AND FITTINGS

The main operating valve and manifold piping shall be factory assembled and shipped attached to the media tank for ease of installation and start up. Piping shall be Schedule 40 galvanized steel and galvanized fittings shall be standard Class 150 threaded malleable iron.

All system inlet, outlet and drain connections shall be less than 50” in distance from the filter support level to provide ease of installation and service.

4.5Flow Control

The backwash flow controller shall be a pressure compensating orifice capable of providing and maintaining proper backwash flows over the entire listed operating pressure range of the system. The backwash flow controller shall be easily serviced without special tools and design so that service to the flow controller can be performed without disassembly of the valve body or the sequencing controller and without disconnecting existing inlet and outlet piping connections.

4.6 CONTROLS

A fully integrated programmable micro-processor driven electronic controller shall be provided to automatically cycle the main operating valve through the reconditioning sequence. The electronic controller shall be designed and manufactured by the same manufacturer as the water treatment equipment.

The controller shall be capable of initiating a reconditioning by accepting an internal signal from the controller time keeping device; an external Hall-Effect flow sensor, a differential pressure switch, an external device such as a remote start push-button or an combination of these methods. The controller shall sequence all steps of an automatic reconditioning and automatically return the filter to a service or stand-by mode. The initiating time and/or volume setpoints shall automatically reset upon initiation of the reconditioning sequence.

The controller shall include a sealed keypad, capable of programming all controller functions, located on the face of the controller. The controller display shall be a multi-line OLED display capable of full text readouts of operating status and codes.

An audible alarm beeper capable of emitting a tone of ~70 dBA shall be available but capable of being disabled if so desired.

The controller shall allow for a manual initiation of the automatic regeneration sequence by utilizing a regeneration selection from the controller menu.

The controller shall operate on a low voltage electrical system. The system shall include a UL/CUL listed transformer. The entire electronic control package and its associated inputs/outputs shall require not more than 24 VAC @ 50VA.

The multiported pilot control assembly shall include a dial for visual indication of the system status; the pilot control valve shall also allow manual operation in the event of a power failure.

The controller shall utilize EEPROM to save pertinent programmed data and statistical functions. The controller must retain all functionality for power interruptions of less than 12 hours. A battery backup shall be installed and capable of maintaining the time of day for a minimum of 5 years.

4.6.1 System control options

 (Time Clock, Single Unit)

An operator selected program of a time-initiated reconditioning for single units shall be available. The controller shall be capable of being entirely programmed in the field without additional interface devices. The operator shall be able to select reconditioning to occur after a specified number of hours or days or specific day of the week. The electronic controller shall indicate various data that includes number of reconditions in the last 14 days, days since last recondition, total number of reconditions for the life of the unit, current day of the week, time of day and unit in recondition.

 (Meter Initiated, Single Unit)

An operator selected program of immediate or delayed volume initiated reconditioning for single units shall be available. The controller shall be capable of being entirely programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes flow rate, total flow since installation, number of reconditions in the last 14 days, days since the last recondition, total number of reconditions for the life of the unit, time of day, and unit in recondition.

 (Differential Pressure Switch Initiated, Single Unit)

An operator selected program of immediate or delayed differential pressure initiated reconditioning for single units shall be available. A differential pressure switch will be installed across the inlet and outlet pipe of the system and will signal the circuit board to initiate reconditioning at a preset pressure drop. The differential pressure switch will be field adjustable within a range from 3 to 20 psi. The controller shall be capable of being entirely programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes number of reconditions in the last 14 days, days since the last recondition, total number of reconditions for the life of the unit, time of day, and unit in recondition.

 (Time Clock, Alternating Duplex Unit)

An operator selected program of a time-initiated reconditioning for alternating twin configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes number of reconditions in the last 14 days, days since last recondition, total number of reconditions for the life of the unit, time of day, and unit in recondition.

Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a recondition sequence, prohibiting the chance of multiple units reconditioning simultaneously.

 (Meter Initiated, Alternating Duplex Unit)

An operator selected program of immediate volume initiated reconditioning for alternating twin configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The controller shall indicate various data that includes flow rate, total flow since installation, number of reconditions in the last 14 days, days since the last recondition, total number of reconditions for the life of the unit, time of day, and unit in recondition.

 (Time Clock, Parallel Duplex/Triplex Unit)

An operator selected program of a time initiated reconditioning for parallel twin/triple configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes , number of reconditions in the last 14 days, days since the last recondition, total number of reconditions for the life of the unit, current day of week, time of day, and unit in recondition.

 (Meter Initiated, Duplex, Triplex, Quad Progressive Parallel Unit)

An operator selected program of immediate or delayed volume initiated reconditioning for parallel configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The controller shall indicate various data that includes flow rate, total flow since installation, number of reconditions in the last 14 days, days since the last recondition, total number of reconditions for the life of the unit, time of day, Progressive Flow Trip Point, and unit in recondition.

Each control shall have a dedicated flow sensor. Mode of operation shall be as follows:

1)(Parallel) All media tanks are on-line simultaneously. As each media tank’s user specified volume of treated water is reached, it shall immediately be taken off line, reconditioned and returned to an on line status.

2)(Duplex Progressive) One controller shall be dedicated as the primary controller. This controller shall be programmed with a Trip Point. The purpose of the Trip Point shall be to bring an additional tank to an on line status from stand by once the treated water flow demand of the facility meets the Trip Point flow rate. The additional tank shall be returned to a standby status once the treated water flow demand is less than the Trip Point flow rate for a minimum of 60 seconds.

(Triplex Progressive) One controller shall be dedicated as the primary controller. This controller shall be programmed with a Trip Point. The purpose of the Trip Point shall be to bring additional tanks to an on line status from stand by once the treated water flow demand of the facility meets the Trip Point flow rate. Systems having three media tanks will have tanks brought on line as multiples of the Trip Point flow rate are attained. Tanks shall be taken back off line as flow decreases to a level less than the Trip Point multiple for a minimum of 60 seconds.

(Quad Progressive) One controller shall be dedicated as the primary controller. This controller shall be programmed with a Trip Point. The purpose of the Trip Point shall be to bring additional tanks to an on line status from stand by once the treated water flow demand of the facility meets the Trip Point flow rate. Systems having four media tanks will have tanks brought on line as multiples of the Trip Point flow rate are attained. Tanks shall be taken back off line as flow decreases to a level less than the Trip Point multiple for a minimum of 60 seconds.

(Differential Pressure Switch Initiated, Parallel Twin Unit)

An operator selected program of immediate or delayed differential pressure switch initiated reconditioning for parallel twin configurations shall be available. A differential pressure switch will be installed across the inlet and outlet pipe of each system and will signal the circuit board to initiate reconditioning at a preset pressure drop. The differential pressure switch will be field adjustable within a range from 3 to 20 psi. The controller shall be capable of being programmed in the field without additional interface devices.The controller shall indicate various data that includes number of reconditions in the last 14 days, days since the last recondition, total number of reconditions for the life of the unit, last slow rinse time, time of day, and unit in recondition.

4.6.2 In addition the following functions shall be provided as part of the system controller:

Recondition sequence timers: The controller shall allow control customization of individual recondition cycle times, each programmable from 1 - 99 minutes. The recondition cycle and time of cycle remaining shall be displayed when in recondition.

Lockout function: The controller shall include a lockout to prevent unauthorized personnel from altering program data.