Attachment 4. 22 31 11 ADD.pdf

VA Illiana Health Care System July 27, 2020

550-20-103 Bid Documents

Construct Campus Water Softening Plant CMTA VIWS19

Danville, IL 09-01-15

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SECTION 22 31 11

WATER SOFTENERS

PART 1 – GENERAL

1.1 DESCRIPTION

A. Provide sodium cycle, cation exchange, pressure type, water softening equipment complete with piping services, electrical services, controls, accessories and auxiliary equipment.

B. A complete listing of all acronyms and abbreviations are included in

Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS.

D. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society of Mechanical Engineers (ASME):

B16.1-2010..............Gray Iron Pipe Flanges and Flanged Fittings:

Classes 25, 125, 250

B16.3-2011..............Malleable Iron Threaded Fittings: Classes 150 and 300

B40.100-2013............Pressure Gauges and Gauge Attachments

ASME Boiler and Pressure Vessel Code -

BPVC Section VIII-1-2015 Rules for Construction of Pressure

Vessels, Division 1

BPVC Section X-2015.....Fiber-Reinforced Plastic Pressure Vessels

C. American Society of Sanitary Engineering (ASSE):

1013-2011...............Performance Requirements for Reduced Pressure

Principle Backflow Preventers and Reduced

Pressure Principle Fire Protection Backflow

Preventers

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D. ASTM International (ASTM):

A6/A6M-2014.............Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling

A53/A53M-2012...........Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc Coated, Welded and

Seamless

A269/A269M-2014e1.......Standard Specification for Seamless and Welded

Austenitic Stainless Steel Tubing for General

Service

A312/A312M-2015.........Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless

Steel Pipes

A403/A403M-2014.........Standard Specification for Wrought Austenitic

Stainless Steel Piping Fittings

D1785-2012..............Standard Specification for Poly (Vinyl

Chloride) (PVC) Plastic Pipe, Schedules 40, 80 and 120

E. American Water Works Association (AWWA):

B300-2010...............Hypochlorites

B301-2010...............Liquid Chlorine

C511-2007...............Reduced-Pressure Principle Backflow Prevention

Assembly

C651-2014...............Disinfecting Water Mains

F. Federal Specifications (Fed. Spec.):

A-A-694D-2002...........Sodium Chloride, Technical

G. Department of Health and Human Services, Food and Drug Administration

(FDA):

CFR 21, Chapter 1, Part 173.25, Ion-Exchange Resins

CFR 21, Chapter 1, Part 175.300, Resinous and Polymeric Coatings (Bio-based materials shall be utilized when possible.)

H. International Code Council (ICC):

IPC-2012................International Plumbing Code

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I. National Electrical Manufacturers Association (NEMA):

ICS 6-1993 (R2001, R2006) Industrial Control and Systems:

Enclosures

J. NSF International (NSF):

61-2014a................Drinking Water System Components – Health

Effects

372-2011................Drinking Water System Components – Lead Content

K. Underwriters' Laboratories, Inc. (UL):

979-2005 (R2014)........Standard for Water Treatment Appliances

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 22 31 11, WATER SOFTENERS”, with applicable paragraph identification.

C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Softener tank construction, coatings and linings. Bio-based materials shall be utilized when possible.

2. Tank distribution system design.

3. Main operating valve.

4. Control system and flow meter.

5. Wiring diagram for controls.

6. Exchange resin.

7. Brine system.

8. Accessories including pressure gages and test kit.

9. Performance data including normal and maximum flow and pressure drop. Certification that required performance shall be achieved.

10. Piping.

D. Complete detailed layout, setting, arrangement, and installation drawings including electrical/pneumatic controls. Drawings shall also show all parts of the apparatus including relative positions, dimensions, and sizes and general arrangement of connecting piping.

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1.5 QUALITY ASSURANCE

A. Bio-Based Materials: For products designated by the USDA’s Bio-

Preferred Program, provide products that meet or exceed USDA recommendations for bio-based content, so long as products meet all performance requirements in this specifications section. For more information regarding the product categories covered by the Bio-

Preferred Program, visit http://www.biopreferred.gov.

1.6 PROJECT CONDITIONS

A. Water sample shall be tested by USEPA certified testing laboratory.

Sample shall be taken by water softener equipment contractor and submitted for testing.

B. Influent Water Analysis:

Component Concentration (mg/L)

Alkalinity ____

Aluminum ____

Arsenic ____

Barium ____

Cadmium ____

Carbonate Hardness as Calcium Carbonate ____

Free Carbon Dioxide Calcium Carbonate ____

Methyl Orange as Calcium Carbonate ____

Noncarbonate Hardness as Calcium Carbonate ____

Phenolphthalein as Calcium Carbonate ____

Total Hardness as Calcium Carbonate ____

Chlorides ____

Residual Chlorine ____

Chromium ____

Copper ____

Fluoride ____

Dissolved Iron ____

Total Iron ____

Lead ____

Magnesium ____

Manganese ____

Mercury ____

Nickel ____

Nitrates ____

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Odor ____

Dissolved Oxygen ____

Conductivity pH ____

Color by Platinum Standard Comparison ____

Silica ____

Silver ____

Sodium ____

Sodium Potassium ____

Total Dissolved Solids ____

Sulphate ____

Turbidity in Nethlometric Turbidity units ____

Zinc ____

Confirm the analysis with current samples and tests.

C. Design Parameters:

Normal System Flow and Pressure Drop: (_405_ gpm @ 15 psig)

Maximum System Flow and Pressure Drop: (_600_ gpm @ 25 psig)

Daily Water Usage:(_67,000_ gallons per day)

Daily Hours of Water Demand: _7:00am to 7:00 pm_

Operating Temperature Range: 4.5 to 38 degrees C (40 to 100 degrees F)

Operating Pressure Range (System): (_30_ - _100_ psig)

Electrical Requirements: Dedicated 120 v, 60 Hz, 1 phase receptacle.

1.7 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

B. Submit operation and maintenance data updated to include submittal review comments, substitutions and construction revisions shall be in electronic version on compact disc or DVD inserted into a three ring binder. All aspects of system operation and maintenance procedures, including piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and sequence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include troubleshooting techniques and procedures for emergency situations. Notes on all special systems or devices such as damper and door closure interlocks shall be included. A List of recommended spare parts (manufacturer, model number, and quantity) shall be furnished. Information explaining

22 31 11 - 6 any special knowledge or tools the owner will be required to employ shall be inserted into the As-Built documentation.

C. The installing contractor shall maintain as-built drawings of each completed phase for verification; and, shall provide the complete set at the time of final systems certification testing. As-built drawings are to be provided, and a copy of them in the latest Auto-CADD version provided on compact disk or DVD. Should the installing contractor engage the testing company to provide as-built or any portion thereof, it shall not be deemed a conflict of interest or breach of the ‘third party testing company’ requirement.

D. Certification documentation shall be provided to COR 10 working days prior to submitting the request for final inspection. The documentation shall include all test results, the names of individuals performing work for the testing agency on this project, detailed procedures followed for all tests, and certification that all results of tests were within limits specified.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Material or equipment containing a weighted average of greater than

0.25 percent lead is prohibited in any potable water system intended for human consumption, and shall be certified in accordance with NSF 61 or NSF 372.

2.2 SOFTENING SYSTEM

A. Vertical, down flow, pressure type with automatic controls to operate on sodium cycle. Automatic-alternating duplex units. Designed for 690 kPa (100 psig) working pressure. All materials exposed to water shall be considered as generally safe by the Food and Drug Administration

(FDA). System shall comply with UL 979.

B. Performance Requirements:

1. Continuous flow of zero hardness soft water (use hardness test strips) with influent water conditions and flows listed in Part 1, with only one of the duplex units in service.

2. Exchanger material shall not wash out of apparatus during any softening run regardless of rate of flow.

3. Turbidity and color of treated water shall not increase above that of raw water.

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4. Dirty or turbid water shall not occur during any softening run, regardless of changes in demand rate.

5. Strainer system, gravel bed, and exchange material shall not become fouled, either by turbidity in the raw water, or by dirt, rust or scale from pipe to the extent to render backwash ineffective.

6. Regeneration shall be accomplished within a period of 75 minutes and occur not more than once per day. Regeneration period shall be that part of cycle of operation from the time unit has delivered its softening capacity until it is ready to be delivering soft water again, including all backwashing, brining and brine washout, complete. Amount of salt necessary to completely recondition unit after a capacity run shall not exceed 240 kg per cubic meter (15 pounds per cubic foot) of existing material.

7. Equipment:

a. Softener Tanks Qty: (3) Dia: 54” Side Shell: 60”

b. Service Valves Size 4” Electrically actuated butterfly

c. Softening Resin 50 cubic ft/tank – 150 cubic feet total

d. Brine Maker Qty: (1) Dia: 74” Height: 64”

e. Salt Storage Liquid brine refiled from bulk brine storage

f. Regeneration Type Water Meter

g. Water Meter Qty: (3) Size: 3” Type: Paddelwheel

C. Softener Tanks–Steel: Butt-welded steel conforming to ASTM A6/A6M. Test hydrostatically at 1.5 times the design pressure and provide certification. Conform to ASME Boiler and Pressure Vessel Code, Section

VIII. Provide stamp on tank and written certification. Sidewall height shall be adequate to allow 50 percent of Tanks shall be of welded construction of tank-quality carbon steel. The tank(s) shall have threaded or flanged openings for pipe connections and a 12" x 16" manhole in the top head. The tank(s) shall be rated for 100 psig working pressure and 150 psig test pressure. Support legs shall be structural steel angle type with pad feet. A minimum freeboard volume of 50% shall be provided to assure adequate bed expansion during backwash. The tank(s) shall have an epoxy safety blue finish paint 3-5 mils DFT exterior and a 10-12 mils DFT epoxy lined interior. Interior lining must meet NSF 61 certification.

D. Distribution System: The upper distribution system shall be a single point baffle constructed of 304 stainless steel pipe and fittings. The

22 31 11 - 8 lower distributor system shall be of the hub and radial type design, constructed of 304 stainless steel with slotted full flow non-clogging replaceable strainers and covered with a sub fill of 1/8" x 1/16" washed gravel.

E. Exchange Material: The ion exchange resin shall be of a premium grade high-capacity synthetic sulfonamide styrene divinyl benzene to be furnished in the sodium form. It shall be stable over the entire pH range, have good resistance to bead fracture, and be insoluble in all common solvents. Each cubic foot of resin will be capable of 30,000 grains per cubic foot capacity when regenerated with 15 pounds of salt (NaCl).

F. The brine system shall be a liquid-brine measuring type with rotationally-molded polyethylene construction. It shall be equipped with an ultrasonic level transmitter, diaphragm type brine valve for precise control of brine draw and tank refill. Brine shall be transferred and diluted to the softener vessel via a venturi type injector. The injector shall be constructed of PVC with a self-adjusting compensator to convey brine at the correct flow rate regardless variations of water pressure.

G. System Controls:

1. A NEMA 4X rated, factory mounted and wired electrical enclosure with all timing and sequencing controls for each softener shall be manufactured and provided by the same vendor providing the water treatment hardware. The controls shall include an automatic regeneration timer having the capability of providing site adjustable regeneration steps of backwash, brine injection, brine displacement, flush and return to service. Indicator lights on the controller shall display the current status of the system. Local control panels shall be factory wired and pre-wired to automatically electrically activate the main operating valves through the steps of regeneration. An indicator indicates the cycle of operation at all times. Complete function and control of all regeneration steps can be performed manually in the event of a power failure. Basis of

Design: Allen-Bradley Micrologix 1400 controller with PanelView 800-

7 Series operator interface. Feedback from individual valves as to their position, open or closed, will be wired to the PLC as to show every valve position on the PLC or remotely in the BMS.

2. Mode of Operation: The system shall consist of three resin tanks

22 31 11 - 9 each having a dedicated paddlewheel type flow sensor in the softener outlet piping and operate in the progressive flow configuration. One resin tank, designated as the primary, will remain on-line at all times. Variation of treated water flow demand shall automatically cause one or two additional resin tank(s) to change status from standby to on-line and back to standby as needed. When the primary media tank regenerates, the next resin tank in sequence shall become the primary. As each resin tank user set volume is reached, it will immediately be taken off-line, regenerated and placed immediately back on-line or standby depending on treated water flow demand. The controller shall be capable of continuously determining the exhaustion rate of each media tank thus automatically avoiding the possibility of a simultaneous regeneration attempt. Simultaneous regenerations are not possible.

3. Operating conditions shall be continuously monitored and display shall show time of day, volume remaining before next regeneration, number of regenerations in last 14 days, number of days since last regeneration, instantaneous flow rate, resettable totalized flow since the last regeneration, time of next regeneration, and identify the cycle that is in progress.

4. Flow shall be regulated to prevent resin loss, operate between 200 and 690 kPa (29 and 100 psig) supply pressure, and prevent noise and hydraulic shock. Control shall permit only one unit to regenerate at a time.

5. Flow meter shall have turndown range of 60/1, minimum accuracy of

+/-1 percent of maximum range, repeatability of +/-0.5 percent of full range. Install with manufacturer’s recommended straight pipe before and after the meter.

6. Main operating valve shall be a fully automatic butterfly, electric actuated type constructed of cast iron or corrosion resistant alloy material with hard-coat anodization and final coat of flouroplate polymer. Coating shall resist 1000 hour/5 percent salt spray test without sign of corrosion. Bio-based materials shall be utilized when possible. Valves shall be slow opening and closing, free of water hammer; diaphragm assembly shall be fully guided. All valve parts accessible for service. The main operating valve shall include a valve mounted automatic self-adjusting brine injector to draw

22 31 11 - 10 brine and control rinse at a constant rate regardless of water pressure in the range of 200 to 690 kPa (29 to 100 psig). Valve shall have soft water sampling cock and indicator to show system status.

H. Accessories: Provide Sampling Cocks for hard and soft water. Provide water test kits for hardness test to conduct soap drop test. Provide

Pressure gauges for untreated water inlet and treated water outlet.

I. Sodium Chloride: Fed. Spec. A-A-694D. Provide sufficient quantity for ten regenerations.

J. Skid Mount, Prepipe and Prewire: The softener The softener tanks shall be skid mounted on a 6" channel iron skid (13.0 lbs. per foot, ASTM grade A-36) at the manufacturer’s site. The skid shall be cross-braced with 6" channel or angle iron. All steel surfaces shall be finish coated to match exterior of softener tanks. All interconnecting shall be the same material as the valve nest manifold piping and shall be assembled by the manufacturer. This shall include inlet and outlet isolation valves for each tank and a system bypass valve. Isolation valves shall be butterfly type with epoxy-coated cast iron bodies, EPDM seats, nylon coated discs/stems, and a 10-position locking operator handle. Inlet, outlet, and drain headers shall be provided and terminated at the skid edge. All piping shall be suitably supported by channel supports anchored to the skid. Electric wiring, where applicable, shall be complete between all inter unit controls and require only a single power source connection. The interconnecting wiring shall be contained in waterproof conduit. The softener tanks are to be bolted to the skid. Permanent attachment, or welding, will not be acceptable. The entire skid mounted system shall be leak and electrically tested as a unit by the manufacturer before shipment.

K. Hardness Analyzer: Manufacturer - Nancrede Engineering Company Hardness

Analyzer, Hach EZ1000 Series Hardness Analyzer or equal. The Hardness analyzer consists of a microprocessor controlled colorimetric analyzer designed to monitor Hardness semi-continuously in a sample stream.

Online Analyzer

Utilizes colorimetric measurement

Controller

Industrial panel with display

Reagents and Standards

The analyzer shall use quick connect reagent containers with pre-installed tubing.

Reagents and standards shall be prepared according to instructions on the Method + Reagent sheet.

Components

Analytical Instrument

To deliver:

a. Hardness Analyzer

b. Reagent containers

c. User Manual

d. Method + Reagent Sheet

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Install analyzer following transmittal drawings and instrument user manual. Contractor will include the manufacturer’s services to perform start-up on instrument to include basic operational training and certification of performance of the instrument.

2.3 EXTERNAL SOFTENER PIPING

A. Pipe: ASTM A53/A53M, 304 stainless steel, Schedule 40.

B. Fittings: Malleable iron, ASME B16.3, or coated cast iron, ASME B16.1, Class 125.

C. Flanges: ASME B16.1, Class 125.

D. Threaded Joints: Shall be made with ends reamed out. Apply bituminous base lubricant or fluorocarbon resin tape to male threads only. Bio-based materials shall be utilized when possible.

2.4 BRINE PIPING

A. Polyvinyl chloride (PVC), ASTM D1785, Schedule 80 with solvent welded joints.

2.5 VALVES

A. Ball: Carbon steel body, stainless steel trim, reinforced Teflon seat and seal, full port, threaded ends.

2.6 PRESSURE GAGES

A. ASME B40.100, Grade A, 1 percent accuracy, 115 mm (4-1/2 inches) diameter, all metal case, bottom connected. White dials, black hands, graduated from 0 to 690 kPa (0 to 100 psig) and identity labeled.

Provide gages with gage cocks at softener hard water inlet and soft water outlet to show pressure drop thru softener.

2.7 REDUCED PRESSURE BACKFLOW PREVENTER

A. Provide on suction side of water softener serving boilers. Parts shall be made of corrosion-resistant materials and shall be of heavy duty construction, 861 kPa (125 psig) class minimum. Backflow preventer shall meet the requirements of ICC IPC, ASSE 1013, and AWWA C511.

2.8 WATER TESTING EQUIPMENT

A. Furnish water testing hardness test strips which measure 0-25 grains of hardness with minimum bottle of 50 strips with color code chart for reading test strips.

2.9 Bulk Brine Tank Scope

A. Provide 12' diameter x 12' - 6" (10'-2" straight shell) high bulk brine system. The FRP vessel has a nominal liquid capacity of 8,600 gallons, a total salt capacity of 48 tons and a dry salt storage capacity of

22 31 11 - 12 approximately 30½ tons and capable of producing 30 to 35 gallons of brine per minute continuously.

B. FRP Vessel - The FRP tank is a flat bottom, closed-top design to be mounted on a flat concrete pad and furnished by the customer. The vessel as manufactured shall be a filament wound FRP tank with FDA grade Aropol™ 7242 Isophthalic resin corrosion barrier reinforced with

(1) ply “C” glass surface veil and chopped glass backup; and with FDA grade Aropol™ 7242 Isophthalic resin in the structural laminated designed and fabricated in accordance with ASTM - D - 3299-95. A four layer construction consisting of 20 mil inner liner, 80 mil resin rich second layer, filament wound third layer, 20 mil fourth layer exterior resin rich with ultraviolet absorber, leaving the tank translucent.

Tank suitable to withstand wind conditions up to 90 mph. The tank shall include the following:

1. Integral Seamless Flat Bottom

2. ASME Dish Top (designed for 250# in an 4"x 4" area)

3. 4 Galvanized Steel Lifting Lugs

4. 4 Galvanized Steel Hold Down Lugs

5. 12" Side Mounted Dust Collection w/ Bag Housing

6. 24" Flanged Side Manway with Domed Cover

7. External Liquid Level Mounting Bracket

8. 4" Top Mounted Pad Flange with Stainless Steel Inserts

9. 24" Top Bolted Manway w/ Pressure Relief Vent

10. 1" FRP Threaded Full Coupling, Water Inlet

11. 2" FRP Threaded Full Coupling, Brine Outlet

12. 2" FRP Threaded Full Coupling, Brine Suction Break Outlet

13. 2" FRP Threaded Full Coupling, Level Control Outlet

14. 3" Bottom Flanged. Drain with (1) Plate Gusset

15. FRP Ladder Clips as Required

C. Brine Collection System - including two (2) lateral brine headers, internal connecting assemblies and external pipe nipple and 2" Ball

Valve. (Piping and supports from valve to use point to be provided by purchaser.)

D. 4" Pneumatic Delivery Piping - including 90° stainless steel long radius bends flanged one end, straight horizontal connecting piping with flange, straight vertical aluminum pipe with flange and quick disconnect truck coupling, flanged connecting assembly, galvanized compression couplings and support clamps. (Support pipe for clamps by purchaser.)

E. Brine Suction Break Assembly - including a shut-off ball valve, an additional 2" clear standpipe assembly, air vent assembly, and necessary internal connecting assemblies, external pipe nipple and includes stainless steel clamp and vessel bracket.

F. Pneumatic Dust Suppression System - containing a 12" flange nozzle, connecting flange, connecting 90° elbows, straight pipe for vertical & horizontal runs, external FRP bag housing with removable cover, polyethylene vent bag, stainless steel bag strap, and stainless-steel hardware as required. Piping and fittings to be schedule 40.

G. Water Distribution System - including a continuous inlet water header constructed of schedule 80 PVC piping and supported by fiberglass support brackets, inlet water assembly, external shut off ball valve, strainer, check valve, strainer, connecting nipples and 110 volt solenoid valve (All external piping and supports from tank to use points by purchaser).

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H. Emergency Pressure Relief Vent – An 8" aluminum Sand Jurs Pressure

Relief vent designed for a ½ PSI bolted into the top manway cover to include gasket and stainless-steel hardware.

I. Liquid Level Control System - an automated level indicator which operates from conductivity including internal piping, shut-off ball valve, clear standpipe assembly, probe holder, probes, air vent assembly NEMA IV enclosure with control relay, Electrical components are 110 volt, 60 cycle, AC. (All external piping supports and electrical wiring by purchaser).

J. Access Ladder and Safety Cage – Meeting or exceeding OSHA standards, the ladder and safety cage would be constructed of aluminum and includes all required tank and concrete mounting brackets and clips.

K. Stainless Steel Hardware - Includes all stainless steel bolts, nuts and washers for assembly, along with the required gaskets for all pipe flanges and tank openings and blank flange for side bottom drain.

L. FRP Handrail System: - Consisting of a continuous solid fiberglass skirt style for safety and rigidity. The system shall be a nominal height of 42" and include a 3" wide out turned flange at the top to be used as a handrail and additional strength to the system. The system shall also include a fiberglass swing gate. The construction shall be the same as the vessel and all nonfiberglass components will be stainless steel. Drain holes are included and placed every 60". The entire system shall meet or exceed OSHA standard requirements.

PART 3 – EXECUTION

3.1 REQUIRED TECHNICAL SERVICES

A. Provide services of a qualified manufacturer's representative to check complete installation for conformance to manufacturer's recommendation, put system into service, make all adjustments required for full conformance to design and specified requirements, and perform all demonstrations and tests.

3.2 FLUSHING AND DISINFECTING

A. Flush and disinfect new water lines and softener interiors in accordance with AWWA C651.

B. Material:

1. Liquid chlorine: AWWA B301.

2. Hypochlorite: AWWA B300.

3.3 STARTUP AND TESTING

A. Operating: Tests shall be conducted in presence of COR. It is prohibited, for testing purposes, to add to or subtract from exchange material used in apparatus, neither will any regenerating agent, other than the solution specified, be permitted.

B. Procedure:

1. Regenerate system to demonstrate operation of multiport valve.

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2. Operate each softener at constant maximum required capacity for ten minutes after soft water is produced. When necessary, waste softened water to sewer to maintain above flow rate. Contractor shall submit samples to a USEPA certified testing laboratory. A certified test report shall be prepared indicating hardness levels are within the specified range. Hardness shall be less than 50 mg/L or as specified.

3. Demonstrate all features of the control system including diagnostics and flow and cycle indications.

C. The CxA will observe startup and contractor testing of selected equipment. Coordinate the startup and contractor testing schedules with the COR and CxA. Contractor shall provide a minimum of 10 working days prior to startup and testing.

3.4 DEMONSTRATION AND TRAINING

A. Provide services of manufacturer’s technical representative for four hours to instruct VA Personnel in operation and maintenance of units.

3.5 MAINTENANCE SERVICE

A. Provide full maintenance contract for 12 months by service technician of water softener manufacturers, including preventative maintenance as required for proper operation of water softener equipment. Servicing company shall be within 2 hours drive and be capable of responding within 6 to 8 hours.

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