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HomeMy WebLinkAbout04. 14-145 APRIL 8, 2014 14-145 RESOLUTION (CARRIED__7-0_____ LOST _______ LAID OVER _______ WITHDRAWN _______) PURPOSE: APPROVAL OF CHANGE ORDER NO. 1 FOR PUBLIC WORKS CONTRACT NO. 12-10 WITH AUGUST WINTER AND SONS FOR WATER FILTRATION PLANT CHEMICAL AND ELECTRICAL SYSTEM IMPROVEMENTS (+$105,338.00) INITIATED BY: DEPARTMENT OF PUBLIC WORKS BE IT RESOLVED by the Common Council of the City of Oshkosh that the following Change Order, a copy of which is attached, is hereby approved: AUGUST WINTER AND SONS, INC. PO Box 1896 Appleton, WI 54912 Net Increase to contract: $105,338.00 PURPOSE: See attached Change Order. BE IT FURTHER RESOLVED that money for this purpose is hereby appropriated from: Acct. No. 541-1810-1799-00000 Water Utility Construction Work in Progress (0 Ql_I KOJH ON TFEE WATER MEMORANDUM TO: Honorable Mayor and Members of the Common Council FROM: Stephan M. Brand, Public Works Utility Bureau Manager,�AAD DATE: April 3, 2014 RE: Change Order No. 1 for Public Works Contract No. 12 -101 Water Filtration Plant Chemical and Electrical System Improvements Projects I August Winter and Sons (+$105,338) BACKGROUND Change Order No. 1 for Contract 12 -10 is scheduled for consideration by the Common Council at the April 8, 2014 meeting. The contract was originally awarded to August Winter and Sons in June of 2012. This change order is to replace the variable frequency drives for the backwash water pumps that were installed per the contract. During the start up of the new pump drives, problems were encountered when running the backwash pumps at full capacity. After a detailed evaluation, it was determined that the drives were not large enough to handle the rated capacity of the pumps even though they were the same size as the drives that were originally installed in 1998. In order to be able to run the backwash pumps at their true, rated capacity, larger drives need to be installed. This change order is for the purchase and installation of the larger variable frequency drives. ►s1111_1 W&I- ? CH2M HILL Engineers, Inc. (CH2M HILL) has committed to complete the project for the original engineering contract amount and will not charge the City for the costs they incur as a result of this change. They will also cover the cost of the original drives. The only additional cost the utility will incur is the difference in the cost between the two drives. Once the new drives are installed, CH2M HILL will assist the City in finding a facility that will purchase the original drives and reimburse the City the difference between that price and the purchase price the City paid for the drives. Once this work is completed, the anticipated actual costs for the utility should be $36,369. FISCAL IMPACT This change order will increase the contact price on this project from $897,100 to $1,002,438. RECOMMENDATIONS recommend approval of Change Order No. 1 to Contact No. 12 -10 in the amount of $106,338 to August Winter and Sons. Approved: e4v*_ Mark A. Rohloff City Manager SMB /tit 1:lEngineering\12 -10 WFP Chem & Elect Syst imprl Project_ InformationlCorrespondencelMemo 112 -10 CO #1 Memo_4- 3- 14.docx CONTRACT MODIFICATION CHI IHILL CITY OF OSHKOSH - CONTRACT NO. 12 -10 M CHANGE ORDER WRITTEN AMENDMENT MODIFICATION NO': TO CONTRACTOR: August Winter & Sons PROJECT: Water Filtration Plant PROJECT NO: 425446 Chemical and Electrical Systems Improvements OWNER: Citv of Oshkosh ENGINEER: CH2MHILL ljlll!��11 11 1. Provide the equipment, information, and accessories specified in Attachment 1. 2. a. Remove and load for transport two adjustable frequency drives (catalogue number CPX25014AAB1B4C8P1 PFS8SP KASBSW) provided under EATON General Order Number SMK0385159, b. Transport drives to Dallas, Oregon. c. Extend warranty to cover 1 year in new installed location. 3. Install replacement AFDs in accordance with the Contract Documents. Reason for ModficatiorE(s }. Larger needed... Attachments (List Support'ng Documents} ATTACHMENT 1 - SECTION 26 29 23, LOW - VOLTAGE ADJUSTABLE FREQUENCY DRIVE SYSTEM Contract Amount or Price Contract Times (Calculate clays) Original $877,100 Original Duration Days Previous Contract By: Linda Mohr Previous Contract Date: Modification(s) Modification(s) (Add /Deduct) $ (Add/Deduct) Days This Contract Modification This Contract Modification (Add/Deduct) $105,338 (Add) (Add/Deduct) Days Revised Contract Amount $1,002,438 Revised Contract Time Days The Revised Contract Completion Date is: May 30, 2014 Owner Contractor Engineer Recommendationz By: By: By: Linda Mohr Date: Date: Date: 02/27/2014 I Number all Modifications consecutively. Copies:Owner 2 Recommendation necessary for Change Orders. Field File FORM 273 Janus 23, 2013 _ CH2M Hill Att: Linda Mohr AUGUST WINTER & SONS, INC. MECHANICAL CONTRACTORS 2323 NORTH ROEMER ROAD * APPLETON, WI 54911 PO BOX 1896 ' APPLETON,1rVl 54912 PHONE: 920.739 -8881 a FAX: 9201 -739 -2230 N Projectljott#: 956 Oshkosh Water Chemical addition Description: replace AFD as directed Dear Linda, ' please review our proposal to remove the existing 2 AFD`s from the Oshkosh Water Plant and load and transport to Dallas Ore., and replace them with 2 new Eaton AFDs per your request of 1/1612014. [have attached P eper Electrlc's quole for the new equipment as well as their estimate for the existing work. The $900 of indirect costs are for administration (Project Management) costs and the $1043 is for additional bond premium. Please note that per our agreement, August Winter and Sons did not include any additional profit If you need additional backup for anything, please do not hesitate to call. Please also note that the contract will need to be extended to reflect this change. Our change order price and breakdown follows; A� must Winter Materlal........................ ............................... $ Labor............ ............................... 0 hrs $ Direct Costs.. ............................... $ Equipment Rental ........... ..... .......................... T - IndirectCosts ............. ............................... $ 900 Subtotal.. .............. ......... -- ................ ...... $ 900 Overhead................................ ... $ Total—...— .................. ....... $ 900 Subcontracts Total Subcontractor Costs .............................. . $ 103,395 Subcontractor MSfkup .. ............................... ... $ . - Total Subcontractor Costs w /overhead ............... $ 903,395 Total AWS /Subcontrat for Costs ......... .............. $ 104,295 Profit/ Sond ................. ....................-- ......... $ 1,043 Change Order Total ..., >n >o......o.,,a,.'n.. $ 105,338 'rime exten©lon required I® 0 days, Ttft quotation toned upon acceptanrc,! Rhin 30 days. Exclusions: 0_�_u,_.�.,. -- - - 1 Norbert J. Schmidt August Winter & sons, Inc. PH: 920-739 -9881 FX: 920739 -2230 VISIT OUR 11110B SM AT WWliy.AUGUSWf NTER.COM �aryrjd€ offl : 3a'i 3',3chofleld Avenue ° Schaiiald. WI W7i3 ° M 7131355 -IfM ` FAY,: Y i 61356-9046 HVAC I PLUM81NG' TANK FAMCATION) ' PROCESS PIPING' INI). SHI�r=YMETAL SP iO L Pf METAL fAB. ' ASAIF PRESSURE VESSELS " ASME COX WFJ_DIMG "24 'HR, 3FRViCI ' � hlt3J�`I%�,kilivr s fA Or ?ffl$COMIM N4;r ;NSFtf LI EM W0,1BER MIX � � � r► � is �� SUMMARY: A. LABOR W,256 B. MATEWALS C. WE q�yy( D. SUBCONTRACTS SUBTOTAL OVERHEAD & PROFIT SUBTOTAL 7.50% $37,049 �5] �0 S i 00,305 :63,090 $ 103,395 BOND �0 3NSURANCE 0 GRAND TOTAL $103,333 ADDITIONAL CAI ENDAR DAYS EXTENDED TO CO'N ('RACT COWLET,IoN € ik'IE: THUS AMOUNT ONLY COVERS TIC DIRECT COSTS IN LABOR, MATERIALS, SUBCONTRACTS AND I Q[IWWNT NECESSARY TO EXECUTE THE CHANGED WORK DFSCWBED IN THE PROPOSAL, AS THE PRESENT TIAM WE CANNOT ASSESS OR EVALUATE THE OVERALL. IMPACT OF TH9 CHANGED WORK ON OUR ORIGINAL CONTRACT SCOPE OF WORK, WU 'I'liEKFZY RESERVE OUR RICWTS TO CLAJM FOR ANY INDIRECT COSTS WMCH MAY ARISE tN TBE. FLI nM A3 A RESULT OF DELAYS TO THE WORK• OUT OF =UENCE WORK, INEFFICIENCIES, EXTENDED CONTRACT COMPLETION, LAFICR AND MATERIAL ESCALATION AND /OR ACCELEM7ION AND EXTENDPID WARRANTIES. ���:.s;riace i.� �clii�f��• rf +, This'f�rrn e =rtisaRt�.rc�veri; JOB NAME: !Au to tiY lii 4` rJ - is nt i< CHANGE ORDER NUMBER: REVISIONMJMRRd x x .. ; i DAT> : 1J23l20I# JOB NO: AT7ETi<)i J ;e+ I fort 5aii(di CONTRACT NO: AMOUNT OF CIO: $103,393 SUMMARY: A. LABOR W,256 B. MATEWALS C. WE q�yy( D. SUBCONTRACTS SUBTOTAL OVERHEAD & PROFIT SUBTOTAL 7.50% $37,049 �5] �0 S i 00,305 :63,090 $ 103,395 BOND �0 3NSURANCE 0 GRAND TOTAL $103,333 ADDITIONAL CAI ENDAR DAYS EXTENDED TO CO'N ('RACT COWLET,IoN € ik'IE: THUS AMOUNT ONLY COVERS TIC DIRECT COSTS IN LABOR, MATERIALS, SUBCONTRACTS AND I Q[IWWNT NECESSARY TO EXECUTE THE CHANGED WORK DFSCWBED IN THE PROPOSAL, AS THE PRESENT TIAM WE CANNOT ASSESS OR EVALUATE THE OVERALL. IMPACT OF TH9 CHANGED WORK ON OUR ORIGINAL CONTRACT SCOPE OF WORK, WU 'I'liEKFZY RESERVE OUR RICWTS TO CLAJM FOR ANY INDIRECT COSTS WMCH MAY ARISE tN TBE. FLI nM A3 A RESULT OF DELAYS TO THE WORK• OUT OF =UENCE WORK, INEFFICIENCIES, EXTENDED CONTRACT COMPLETION, LAFICR AND MATERIAL ESCALATION AND /OR ACCELEM7ION AND EXTENDPID WARRANTIES. ���:.s;riace i.� �clii�f��• rf +, This'f�rrn e =rtisaRt�.rc�veri; B. MATERIALS MATERIAL PER "TAKE -OFF" TOTAL $$7,049 MISCELLANEOUS MATERIAL & WA&I'I3 € W00 /1 TOTAL SU SUBWAL 387,049 TREIGRT AND HANDLING TOTAL, $0 SPECIAL. EXPEDITING TOTAL, $0 SALES TAX 0.0% TOTAL $0 MATERIAL TOTAL $m7,Ii49 'SUPERINTENDENT °Q SUPERVISOR SAFETY 791 IA 6% OF TOTAL MAN HOURS 12 % OF TOTAL MAN HOURS 3 % OF TOTAL MAIM HOURS Qshkmh Watg 12120 3 23- tan -14 1 A. LABOR SUPER INTEND; NT° 0 HRS ® ; F ;; >,. k 'lid:':;' TOTAL $0.00 ao SUPERVISOR 19 HRS @ TOTAL, $1,545.46 SAFETY 0 MRS (a3 ' °799r' TOTAL, $0.00 ELECTRICIAN 136 HRS [a� .° ` , 7 ©.7` TOTAL $11,710.92 ESTIMATOR 14RS @ 1,00 TOTAL $0.00 ENGINEER... TOTAL Wa0 TOTAL $0.00 TOTAL $0.00 ., 4.1 TOTAL $0,ll0 TRAVEL �f ;° u� TOTAL $0.00 SUBSISTENCE n [ TOTAL $0.00 PREMIUM COSTS TOTAL 50.00 LABOR TOTAL $13,256.38 B. MATERIALS MATERIAL PER "TAKE -OFF" TOTAL $$7,049 MISCELLANEOUS MATERIAL & WA&I'I3 € W00 /1 TOTAL SU SUBWAL 387,049 TREIGRT AND HANDLING TOTAL, $0 SPECIAL. EXPEDITING TOTAL, $0 SALES TAX 0.0% TOTAL $0 MATERIAL TOTAL $m7,Ii49 'SUPERINTENDENT °Q SUPERVISOR SAFETY 791 IA 6% OF TOTAL MAN HOURS 12 % OF TOTAL MAN HOURS 3 % OF TOTAL MAIM HOURS ESTIMATING FORM WAldr 1/2312014 093crlptlon Quart. 3 ler1 Unit S82,B49 -OC Natoias rlon34n lbor 11 shot Externslon No4e8 f4Cr3b0NPAF0 S82,e49.D0 _._ 120 .. rt�rnlin 4to'®xtan_d control wt"fn_B 2 4100,00 3200.00 d _ 2 !, ' lhgi}�fgj1250AF[7 $2090 t S1.SW Oa $400.00 - =�r to ali9a. OR _ t 31,dfl0.00 - r k - 2 $s7S.00 i 150.00 31.950.00 1.8 -- .:. .. , .ban : • r t i* o ontmnta piolo onto drfva end iu i3} fiolae in easi d13vo 7 $150.00 _ w 7 zfr iJS i.: t u • ? i �l 1 s.- i UN t t 7 7_ _ h R i - ------- --- ! s` }♦ U710 I sa CHEMICAL AND ELECTRICAL IMPROVEMENTS CITY OF OSHKOSH -WATER FILTRATION PLANT SECTION 26 29 23 LOW- VOLTAGE ADJUSTABLE FREQUENCY DRIVE SYSTEM PART1 GENERAL 1.01 REFERENCES A. The following is a list of standards which may be referenced in this section: 1. Electronic Industries Alliance (EIA): 359 -A -1, Special Colors. 2. Hydraulic Institute Standards (HIS). 3. Institute of Electrical and Electronics Engineers (IEEE): a. 112, Standard Test Procedure for Polyphase Induction Motors and Generators. b. 519, Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems. C. C62.41, Recommended Practice on Surge Voltages in Low - Voltage AC Power Circuits. 4. National Electrical Manufacturer's Association (NEMA): a. 250, Enclosures for Electrical Equipment (1,000 Volts Maximum). b. CP 1, Shunt Capacitors. C. M77 G 1, Motors and Generators. U. SYYr" 57, }�7 taridard 10, k-olm Vl, The�--rnocouple Extensions, and Instrumentation Cables. 5. National Fire Protection Association (NFPA): 79, Electrical Standard for Industrial Machinery. 1.02 DEFINITIONS A. Terms that may be used in this section: 1. AFD: Adjustable frequency drive. 2. CMOS: Complementary metal oxide semiconductor. 3. CSI: Current source inverter. 4. EMU: Energy monitoring unit. 5. GTO: Gate turn-off thyristor. 6. MPR: Motor protection relay. 7. MTBF: Mean time between failure. 8. PWM: Pulse width modulation. 9. ROM: Read only memory. 10. RTD: Resistance temperature detector. 11. RTU: Remote Telemetry Unit. 12. Rated Load: Load specified for equipment. 13. Rated Speed: Nominal rated (100 percent) speed specified for equipment. 14. TDD: Total demand distortion. 15. THD: Total harmonic distortion. 16. TTL: Transistor transistor logic. 1.03 SYSTEM DESCRIPTION A. Performance Requirements: Rated Continuous Operation Capacity: Not less than full load current rating of driven motor, as indicated on motor nameplate, and suitable for continuous operation at continuous overload which may be imposed on motor by driven pump operating over specified speed range. B. Design Requirements: 1. Other equipment is being powered from same bus as adjustable frequency drives. Ensure proper operation of drives and other loads under normal and emergency conditions. 2. Furnish AFDs rated on basis of existing motor full load nameplate current rating. 3. Drive System: Convert incoming three - phase, 60 -1-1z ac power to variable voltage, adjustable frequency output for adjustable speed operation of an existing motor, using pulse - width - modulation (PWM) technique to produce adjustable frequency output. 4. System rated for continuous industrial duty and suitable for use with NEMA MG 1, Design B motors. 5. Incoming Line Circuit Breaker: Provide positive means of disconnecting incoming power, and overcurrent protection for drive system. 6, incoming Line Reacton Design to minimize hartrionic distortion on incoming power feeder. 1.04 SUBMITTALS A. Action Submittals: 1. Overall drive system operating data, including efficiencies, input currents, and power factors, at driven equipment actual load and rated system input voltage, at 40, 60, 80, 100, and 110 percent of rated speed. 2. AFD output pulse maximum peak voltage, pulse rise time, and pulse rate of rise including justification for proposed deviation from specified values. 3. Data on shelf life of "dc link" capacitor. 4. Complete system rating, including nameplate data, continuous operation load capability throughout speed range of 0 percent to 120 percent of rated speed. 5. Complete adjustable frequency controller rating coordinated with motor full load nameplate current rating; list controller special features being supplied. 6. Controller, reactor, harmonic filter, and isolating transformer dimensional drawings; information on size and location of space for incoming and outgoing conduit. 7, Maximum neat dissipation from enclosure. CHEMICAL AND ELECTRICAL IMPROVEMENTS CITY OF OSHKOSH - WATER FILTRATION PLANT S. Layout of controller face showing pushbuttons, switches, instruments, and indicating lights. 9. Complete system operating description. 10. Complete system schematic (elementary) wiring diagrams. 11. Complete system interconnection diagrams between controller, drive motor, and related components or controls external to system, including wire numbers and terminal board point identification. 12. One -line diagram of system, including component ratings. 13. Description of diagnostic features being provided. 14. Descriptive literature for control devices such as relays and timers. 15. Itemized bill -of- materials listing system components. 16. Description of EMU and MPR being furnished or how these functions are accomplished within drive system. B. informational Submittals: i. Statement of Supplier qualifications. 2. Special shipping, storage and protection, and handling instructions. 3. Manufacturer's printed installation instructions. 4. Factory functional test reports. 5. Certified copy of test report for identical motor tested in accordance with NEMA MG 1- 12.53a and IEEE 112, Test Method B, showing rated load, rated speed efficiency meeting or exceeding specified values; motors not as specified will be rejected. 6. Field test reports. 7. Suggested spare parts list to maintain equipment in service for period of i year and 5 years. Include list of special tools required for checking, testing, parts replacement, and maintenance with current price information. S. List special tools, materials, and supplies furnished with equipment. for use prior to and during startup and for future maintenance. 9. Operation and Maintenance Data: As specified in Section 01 78 23, Operation and Maintenance Data. 10. Manufacturer's Certificate of Proper installation, in accordance with Section 0143 33, Manufacturers' Field Services, 1.05 QUALITY ASSURANCE A. Supplier: Minimum 5 years' experience in furnishing similar size and type adjustable frequency, controlled speed, drive systems. 1.06 EXTRA MATERIALS A. Furnish for each drive unit: Complete set of components likely to fail in normal service. Plug -in subassemblies. Printed circuit boards. 4. SCRs. 5. Integrated circuits. 6. Ono complete power bridge and one spare printed circuit card for each modular, plug -in type card in controller. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Components and accessories specified in this section shall be products of I. Eaton Cutler hammer. 2. Allen - Bradley. 3. Square D. 2.02 SUPPLEMENTS A. Some specific requirements are attached to this section as supplements. 2.03 SERVICE CONDITIONS A. Ambient Operating Temperature: 32 degrees F to 104 degrees F. B. Storage Temperature: Minus 40 degrees F to 158 degrees F. C. Iuniidit-y: 0 percept to y5 percent relative (noncondensing). D. Altitude: 0 foot to 3,300 feet. E. Frequency Stability: Plus or minus 0.1 percent of maximum frequency. 2.04 COMPONENTS A. Drive Units: 1. Incorporate switching power supply operating from do bus, to produce PWM output waveform simulating sine wave and providing power loss ride through of 2 milliseconds at frill load, full speed. 2. Current- limiting semiconductor fuses for protection of internal power semiconductors. 3. Employ diode bridge rectifier providing constant displacement power factor of 0.95 minimum at all operating speeds and loads. 4. Use transistors for output section, providing a minimum 97 percent drive efficiency at full speed, full load. 5. Employ do power discharge circuit so that after removal of input power do link capacitor voltage level will decay below 50 volts do within 1 minute after de- energizing following NEMA CP 1 and NFPA 79. Design do lints capacitor for a MTBF of 5 years. 6. Operate with open circuited output. 7. Input Voltage: 480V ac plus or minus 10 percent. 8. Output Voltage: 0 to 480 volts, three- phase, 0 to 66 41z, minimum. 9. Maximum peals voltage of PWM AFD output .pulse of 1,000 volts, with pu4sc rise time of not less than 2 microseconds, and maximum rate of CHEMICAL AND ELECTRICAL IMPROVEMENTS CITY OF OSHKOSH- WATER FILTRATION PLANT rise of 500 volts per microsecond. Maximum frequency of PWM AFD output pulse (carrier) frequency of 3,000 Hz. 10. Motor Audible Noise Level: When operating throughout speed range of PWM AFD, no more than 3 dBA above that designated in NEMA MG 1 for same motor operated at constant speed with a 60 -Hz supply voltage. 11. Short-Time Overload Capacity: 110 percent of rated load in rms current for I minute following full load, full speed operation. 12. Equipment Short- Circuit Rating: Suitable for connection to system with maximum source three- phase, bolted fault, short - circuit available of 42,000 amps rms symmetrical at 480 volts. 13. Furnish drives with output current- limiting reactors mounted within equipment enclosure. 14. Diagnostics: Comprehensive for drive adjustment and troubleshooting: a. Memory battery backup; 100 -hour minimum during power loss. b. Status messages will not stop drive from running but will prevent it from starting. C. Fault Condition Messages and History: First fault protection function to be activated, ability to store six successive fault occurrences in order. Minimum faults numerically: 1) Overcurrcnt (time and instantaneous). 2) Overvoltage, 3) Undervoltage (de and ac). 4) Overtemperature (drive, motor windings, motor bearing, pump bearing), 5) Serial communication fault. 6) Short- circuit /ground fault (motor and drive). 7) Motor stalled. 8) Semiconductor fault. 9) Microprocessor fault. 10) Single -phase voltage condition. 15. Drive Protection: a. Fast- acting semiconductor fuses. b. Overcurrent, instantaneous overcurrent trip. C. Dc undezvoltage protection, 70 percent dropout. d. De overvoltage protection, 130 percent pickup. Q, Overtemperature, drive, inverter, converter, and de link components. f. Overtemperature, motor, and pump. g. Single- -phase protection. h. Reset overcurrent protection (manual or automatic reset). i. Active current limit /torque limit protection. j. Semiconductor fault protection. k. Short - circuit /ground fault protection. 1. Serial communication fault protection. m, Microprocessor fault. III Surge protection for transient overvoltage (6,000 volts, 80 joule surge, tested per IEEE C62.41)� o. Visual display of specific fault conditions. 16. Operational Features: a. Use manufacturer's standard unless otherwise indicated. b. Sustained power loss. C. Momentary power loss. d. Power interruption. e. Power loss ride through (0.1 second). f. Start on the fly. g. Electronic motor overload protection. h. Stall protection. i. Slip compensation. j. Critical frequency lockout (three selectable points minimum, by 1.5 -Hz steps in 10 -Hz bands, to prevent resonance of system). k. Drive maintenance system software for complete programming and diagnostics. 1. Ground fault protection, drive, and motor. m. Operate with no motor connected to output terminals. B. Rectifier: Three -phase 1 8-pulse full wave diode bridge rectifier to provide constant do voltage to drive's do bus. C. Famish series choice and capacitors on do bus to reduce ripple in rectifier output and to reduce harmonic distortion reflected into incoming power feeders. D. Controller: Microprocessor - controller PWM inverter to convert to do voltage to variable voltage, adjustable frequency, three -phase ac output. Output voltage shall vary proportionally with frequency to maintain constant ratio of volts to hertz up to 60 -Hz; above 60 -Hz, voltage shall remain constant with drive operating in constant horsepower output mode. E. Enclosure: 1. NEMA 250, Type 1, gasketed, freestanding, enclosure for mounting against wall, completely front accessible, and hinged doors. Properly sized to dissipate heat generated by controller within limits of specified operating conditions (including ambient temperature and ambient airflow). Enclosure not to exceed dimensions shown on Drawings. 2. Cable termination compartment door interlocked main circuit breaker, defeatable (lockable in the open position), emergency stop pushbutton, alphanumeric keypad and display, and operator's controls. Components and controls specified in Section 26 05 04, Basic Electrical Materials and Methods. 3. Wire drive from below and above for power and control wiring. 4. Size forced- ventilation for periodic operation to cool each unit with maximum room ambient temperature of 95 degrees F. Furmsh redundant fans such that if one fan fails remaining fans furnish adequate ventilation for drive when operating at maximum capacity. furnish filters on ventilation intakes. 5, Wiring: a. Bundle stranded copper wiring neatly with nylon tie wraps or with continuous plastic spiral binding. CHEMICAL AND ELECTRICAL IMPROVEMENTS CITY OF OSHKOSH - WATER FILTRATION PLANT b. Label each terminal for permanent identification of leads. C. Identify each wire at each end with imprinted mylar adhesive - back wire markers. d. Incorporate in as- installed wiring diagrams for wire and terminal numbers shown. C. Wiring across door hinge, use 19- strand, NEMA WC 57 Class C stranding looped for proper twist rather than bending at hinge. f. Wire connections internal to panels by crimp -on terminal types. g. For multiple enclosure systems, complete interconnection wiring with gasketed enclosure openings for wiring. h. Multipoint plug receptacles for control wiring crossing equipment shipping splits. 6. Selector switches, indicating lights, potentiometers, instruments, protective devices, and major system components identified by means of mechanically attached, engraved, laminated nameplates. F. Operator Interface: I. Controls: Mount drive local control on front door of enclosure and include control switch and membrane type keypad for the following operator functions: a. In local, follow touch panel start /stop and speed command. b. Parameter mode selection (recall programmed parameters). c. LOCAL/OFF/REMOTE control selection (in remote, follow remote RUN command digital input and speed command remote 4 mA to 20 mA analog signal). d. Fault reset, manual for faults, except loss of ae voltage which is automatic upon return. C. Parameter lock, password or key switch lockout of changes to parameters. f. Start disable, key switch or programmed code. 2. Control circuit disconnect shall de- energize circuits in units that are not de- energized by main power disconnect device. 3. 120 volts, single - phase, 60 -Iiz circuits for control power and operator controls from internal control power transformer. Furnish power for motor space heaters rated 120 volts. 4. Arrange component and circuit such that failure of a single component cannot cause cascading failurc(s) of other component(s). 5. Alphanumeric Display: During normal operation and routine test, the following parameters shall be available: a. Motor current (percent of drive rated current). b. Output frequency (hertz). C. Output voltage. d. Running time. e. Local /remote indicator. E Status of digital inputs and outputs. g. Analog :input and output valrres. h. Output motor current per leg. i. All test points. 6. Adjustable Parameters: Set drive operating parameters and indicate in numeric form. Potentiometers may not be used for parameter adjustment. Minimum setup parameters available: a. Frequency range, minimum, maximum. b. Adjustable accelerationMeceleration rate. C. Volts per Hertz (field weakening point). d. Active current limit /torque limit, 0 percent to 140 percent of drive rating. C. Adjustable voltage boost (IR compensation). f. Preset speed (adjustable, preset operating point). g. Provision for adjustment of minimum and maximum pump speed to be fiirnished as function of 4 mA to 20 mA remote speed signal. G. Signal Interface: 1. Digital Input: a. Accept a remote RUN command contact closure input. b. High temperature contact closure input from an existing MPR. described below. 2. Digital Output: Furnish three discrete output dry contact closures rated 5 amps at 120 volts ac. a. DRIVE RUNNING. b. DRIVE FAULT (with common contact closure for all fault conditions). c. DRIVE IN REMOTE MODE, 3. Analog Input: When LOCAL /OFF /REMOTE switch is in REMOTE, control drive speed from remote 4 mA to 20 mA do signal. a. Make provisions for adjustment of minimum and maximum motor speed which shall result from this signal. b. Factory set this adjustment to comply with operating speed range designated in driven equipment specifications. C. Frequency resolution shall be 0.1 percent of base speed. 4. Analog Output: Furnish two 4 mA to 20 mA do signals for actual frequency, actual load. 5. Serial Communication Interface: RS232 /RS 422, compatible with MODBUS as an RTU. H. Accessories: 1. Equipment Identification Plate: 16 -gauge stainless steel with 1/4 -inch die - stamped equipment tag number securety ?amounted in readily visible location. 2. Lifting Lugs: Equipment weighing over 100 pounds. 3. Anchor Bolts: Type 316 stainless steel, sized by equipment manufacturcrl /2 -inch minimum diameter. 4. Motor Protection Relay: Provide a cut -out within the door of the enclosure for installation of an existing MPR. Coordinate size and functio nality v ith field investigation.. CHEMICAL AND ELECTRICAL IMPROVEMENTS CITY OF OSHKO0311- WATER FILTRATION PLANT 1. Energy Monitoring System: For each drive include an EMU as specified in or furnish functions within drive system. Communications protocol and signal compatibility shall be as required for EMUS. 2.05 FACTORY FINISHING A. Enclosure: 1. Pruner: One coat of rust- inhibiting coating. 2. Finish: a. Interior: One coat white enamel. b. Exterior: One coat manufacturer's standard gray enamel or EIA 359 -A -1, No, 61, 2.06 SOURCE QUALITY CONTROL A. Factory Inspections: Inspect control panels for required construction, electrical connection, and intended function. B. Factory Tests and Adjustments: Test one control panel actually furnished. C. Record test data for report. D. Functional Test: Perform manufacturer's standard. T'AR'T' 3 EXECUTION 3.01 INSTALLATION A. Install in accordance with manufacturer's printed instructions. 3.02 FIELD QUALITY CONTROL A. Functional Test: 1. Conduct on each controller. 2. Inspect controller for electrical supply termination connections, interconnections, proper installation, and quiet operation. 3. Record test data for report. B. Performance Test: 1. Conduct on each controller. 2. Perform sunder actual or approved simulated operating conditions. 3. Test for 6 pumping cycles. 4. Dcinonstrate performance by operating continuous period while varying application load, as input conditions allow, to verify systern oerf�s:rt�ar�ce. With plant load connected to normal utility source, measure the following to show parameters within specified limits: a. Total and individual current harmonic distortion, up to and including 35th harmonic, at location identified as PCCI in Plant One -Line Diagram, under following load conditions: 1) Each AFD running at full load and half load. Power factor at input side of each drive. Documented verification that power factor is maintained at 95 percent as speed of drive goes down from 100 percent to 33 percent. THD at location identified as PCCI under following conditions: 1) Each AFD running at full load and Half load. 6. With plant load connected to standby power source, measure the following to show parameters within specified limits: a. Total and individual current harmonic distortion, up to and including 35th harmonic, at location identified as PCC2 in Plant One -Line Diagram, with drives running at: 1) Full load. 2) Half load. 7. Record test data for report. C. Test Equipment: T Dranciz, 1viodei No. 626 -PA, harmonic distortion monitor and Series 626 disturbance analyzer or equivalent instrument to document results. 2. Provide diagnostic plig -in test card complete with instructions, multiposition selector switch, and meters or built -in diagnostic control panel or ROM -based processor for monitoring ac, dc, and digital signals to assist in troubleshooting and startup of drive. 3.03 MANUFACTURERS' SERVICES A. Manufacturer's Representative: Present at Site or classroom designated by Owner for minimum person -days listed below, travel time excluded: I . ! person. -days for installation assistance and inspection. 2. 1 person -day for functional testing and completion of Manufacturer's Certificate of Proper Installation. 3. 1 person -days for facility startup. 4. 1 person -days for post - startup training of Owner's personnel. Training shall not commence until an accepted detailed lesson plan for each training activity has been reviewed by Owner. B. See Section 0143 33, Manufacturers' Field Services and Section 01 91 14, Equipment Testing and Facility Startup. 3.04 SUPPLEMENTS NOT USED EP\11I) O1, SIEC'll'1[ON City of Oshkosh Water Filtration Plant Backwash Supply Pumps Adjustable Frequency Drives Replacement 2012 The backwash supply (BWS) pumps' adjustable frequency drives (AFDs), installed in 1998, were manufactured by Robicon and it was difficult get replacement parts and equipment service. Consequently, one of the two drives was regularly out of service and the City decided to replace the drives to maintain reliable filter operations. Record drawings denoted the AFDs were 250 -hp units powered through 400 -amp breakers. CH2M HILL specified standard 250 -hp ADFs to replace the drives that were installed in 1998. Standard drives for standard 250 -hp 1,800 rpm motors are rated for 302 amps. November 7, 2013 CH2M HILL learned the pump motors were non- standard, 433 -amp, low rpm motors and the Robicon drives were variable voltage drives powered through 600 -amp breakers. November 19, 2013 CH2M HILL facilitated a meeting with the City, August Winter & Sons (prime contractor), Pieper Power (electrical subcontractor), and Eaton (drive manufacturer) to discuss the details of the unique installation and possible solutions. Based on actual installed conditions, it was agreed that larger AFDs are needed to provide enough amps to drive the motors and provide full pump hydraulic capacity. November— December, 2013 CH2M HILL re- evaluated plant documentation and actual as -built conditions, analyzed electrical power feeder sizing from the pump motors to the drives and from the drives to the circuit breakers, and provided technical input to Eaton for the preparation of new shop drawings for replacement AFDs. Based on review of available Plant documentation, it appears that in 1997 HNTB /CDM designed the new Plant's distribution system for 250 -hp, 1,800 rpm BWS pump motors drawing 302 amps. Sometime during construction it was determined that the BWS pump motors were actually 250 -hp, 507 rpm units drawing 412 amps. The action apparently taken then was to oversize the Robicon AFDs to accommodate the motor and upsize the breaker to 600 amp. The electrical cables (from the pump to drives and from drives to the breakers) were not upsized, and the record drawings did not record these changes made in the field. In November, CH2M HILL committed to participating in the costs associated with installation of drives that fall short of the BWS pump motors' amperage (roughly $70,000). The City committed to paying forthe costs associated with installing new larger drives (roughly $105,000). January 2014 New shop drawings for 350 -hp, 460 -amp AFDs were developed by Eaton and reviewed and approved by CH2M HILL. CH2M HILL identified a potential new owner for the currently installed 250 -hp, 302 amp AFDs. August Winter & Sons and Pieper Power prepared a cost summary for the installation of the 250 -hp AFDs and a cost estimate for the new 350 -hp AFDs. February 2014 CH2M HILL prepared change order documentation for review and approval by the City. Lorenson, Lynn From: Linda.Mohr @CH2M.com Sent: Monday, March 03, 2014 2:55 PM To: Patek, David; Lorenson, Lynn Cc: Brand, Stephan; Rokus, Bradley J. Subject: Water Filtration Plant construction project change order Attachments: AFDs_change_order.docx David and Lynn, We have an unusual change order request pending City approval on City Contract 12-10 where two new adjustable frequency drives are being installed for the backwash supply pumps. The attached is a summary of the situation. I am requesting an opportunity to meet with you at your earliest convenience to discuss the details and answer questions. Thank you for your consideration. Linda Mohr CH2M HILL 135 S. 84th Street, Suite 400 Milwaukee, WI 53214 (p) 414.847.0205 (f) 414.454.8793 (c) 414.702.7756