COMMUNITY COLLEGE OF ALLEGHENY COUNTY PURCHASING DEPARTMENT 800 ALLEGHENY AVENUE, PITTSBURGH, PA 15233

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1 COMMUNITY COLLEGE OF ALLEGHENY COUNTY PURCHASING DEPARTMENT 800 ALLEGHENY AVENUE, PITTSBURGH, PA ADDENDUM NO. 2 BID PROPOSAL NO. 912 RIDGE AVE. REVITALIZATION PE BUILDING AUGUST 20, 2014 The following additional information is hereby made a part of this bid proposal: ****************************************************************************** Addendum 2 is comprised of the following attached items: 1) Pre-Bid Meeting Attendance Sheet (5 pages) 2) v2 - CCAC PE Pre-Bid Agenda (2 pages) 3) Added Specification Section Enclosed Controllers - VFDs (10 pages) By this addendum, the table of contents for the Project Manual should be adjusted to reflect the addition of this section ****************************************************************************** Sign addendum and submit to the College with your original bid. Company Name Bidder s Signature Issued by: Michael G. Cvetic Director of Purchasing

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7 CCAC Ridge Ave Revitalization - Physical Education Building Renovation - Pre-Bid Meeting Agenda Meeting Location: CCAC Allegheny, Student Services Center, Auditorium Meeting Date and Time: Tuesday, August 19, :00am to 11:45am Item I Introduction 1. As per CCAC Administration s request, this pre-bid is being recorded. 2. Project Team Introduction: CCAC Staff, A/E Team, CM 3. The work will be completed under multiple prime contracts: A. General Construction Contractor (i.e. General Trades) B. Mechanical/HVAC C. Plumbing D. Fire Protection E. Electrical II CCAC - Procurement Items 1. Bid Due Date: by 2:00pm at the Office of College Services 800 Alleghany Avenue, Pittsburgh PA Project Labor Agreement (PLA) - Building Trades Council Representatives to address 3. Prevailing Wages - The State requires notice of project commencement. 4. Documents required to be submitted by ALL bidders (As included in the Project Manual) A. Bidder Signature Form (Form 1.0) B. Bid Proposal Price Form (Form 2.0), Bid Bond & Addendums C. Noncollusion Affidavit (Form 3.0) & Instructions D. Minority (MWDBE) Participation (Form 4.0) E. Extension of Contract Execution Requirements (Form 5.0) F. Letter of Assent (Form 6.0) 5. Bids will NOT be accepted by fax or electronically 6. Documents that are required to be submitted to the Purchasing Department by the AWARDEE(S) (As included in the Project Manual) A. Performance Bonds (awardee only) B. Payment Bond (awardee only) C. Contract Articles of Agreement (awardee only) D. No-Lien Agreement (awardee only) E. Insurance Requirements (awardee only) 7. Award letters will be sent after all contract documents are properly executed 8. PO or BO is awardees Notice to Proceed 9. A bid review meeting will be held within three (3) days of the bid with the apparent low bidder for each prime contract. III CCAC - Campus Security 1. Overview of Security Issues 2. Expectation of Contractor behavior Speaker Charles Kimmel (5 min) Joe Pugliano (20 min) Ed Bogats (5 min) ODC Project Number Page 1 of 2

8 IV OCIP - Owners Controlled Insurance Program Explanation of OCIP Requirements V Project Overview 1. Overview of Project 2. Phasing Plan VI Oxford Development Company 1. Milestone Schedule 2. Pre-Bid RFI process A. All communication via RFI form in the Project Manual and directed to the individuals identified B. Cut off for RFI s will be Thursday at 5:30pm 3. Use of site A. Parking is limited to one (1) company vehicles per prime contract B. Laydown area is limited to within the site fence shown on drawing G Work Hours will generally be from 7:00am to 3:30pm or as required to complete work. The construction period is estimated to be 8 to 9 months. 5. Coordination with CCAC Activities will be required. CCAC is a full time campus all year round. 6. Additional Tour of the P.E. building on Thursday at 9:00am - Meet at the Security Desk at the fourth floor entrance - sign-in may be required, allow adequate time. Randy Hamilton with ODC will lead the tour. A/E consultants will not be present. VII General Questions Technical questions should be a submitted on the form included in the front end of the project manual. Gary Meinen (5 min) Charles Krimmel (10 min.) Scott Pollock (10 Min) (5 min) Randy Hamilton - Project Manager Oxford Development Company FAX: Andrew Lang, AIA, NCARB - Dir. of Development Services Oxford Development Company FAX: VIII Site Tour (45 min) ODC Project Number Page 2 of 2

9 SECTION PART 1 GENERAL 1.1 RELATED DOCUMENTS Drawings and General Provisions of the Contract, including General and Supplemental Conditions and Division 01 Specification Sections, apply to this Section. 1.2 DESCRIPTION OF WORK A. Furnish, install, test, and place in operation a new variable speed motor controller system, complete with all accessory equipment for the following mechanical systems: 1. As shown on the mechanical drawings mechanical schedules. B. The Contractor is responsible for insuring that the equipment supplied to meet the above requirements will fit in the allotted space as shown on the Contract Drawings. C. Related sections include the following: 1.3 REFERENCES 1. Division 23 sections for integration and coordination with HVAC systems and controls. A. IEEE Institute of Electrical and Electronic Engineers - Standard , governing recommendations for harmonic content and control. Compliance with IEEE 519, 1992 via a harmonic filter mounted and wired within the drive enclosure. B. UL and cul - Underwriters Laboratory 1. UL508C, governing variable frequency drives in the United States and Canada. 2. UL508A, Custom Control Panels C. NEC National Electric Code - Governing both the base drive and all configurations thereof. D. IEC International Electro-Technical Commission - IEC 16800, governing international standards for variable frequency drives. 1.4 QUALITY ASSURANCE A. An approved variable frequency drive motor controller manufacturer shall have been regularly engaged in the production of these drives for a minimum of ten (10) years. The manufacturer shall provide factory trained service support and parts through a factory authorized distributor that is regularly doing business in the area of the installation (within 50 miles)

10 B. The VFD package shall be UL listed and CSA approved. C. To ensure parts availability and future support, private labeled "third party" products are not acceptable. D. The variable frequency drive motor controller shall be subject to, but not limited to, the following quality assurance controls, procedures and tests: 1. Power transistors, SCRs and diodes shall be tested to ensure correct function and highest reliability. 2. All printed circuit boards shall be tested at 50 degrees C for 50 hours. The solid state motor controller manufacturer shall provide certification that the tests have been completed. 3. Every variable frequency drive motor controller shall be functionally tested under motor load and over the entire speed range to ensure that if the controller is started up according to the instruction manual provided, the unit will run properly. E. The VFD shall have a 28-year documented (MBFR) meantime between failure rate. 1.5 SUBMITTALS A. The following shall be submitted: 1. Scope of project, highlighting the bill-of-material for approval 2. Terminal block and customer connection diagrams 3. Electrical diagrams demonstrating power connections of key components 4. Dimensional outline drawings, including approximate weight 5. Harmonic mitigation equipment specified later in this section. B. The following will be submitted upon project completion: 1.6 WARRANTY 1. Final as-built drawings 2. Installation and Operation manuals A. Warranty shall be 24 months from the date of start-up or 24 months from date of delivery whichever occurs first. B. Warranty shall include all parts, labor, and the service technician s travel and living expenses for the entire 24-month period. 1.7 RESPONSIBILITIES A. The VFD Manufacturer shall furnish the following: 1. A complete set of submittals as described herein. 2. All engineering and installation services as described herein. 3. All startup services as described herein and commissioning as part of HVAC system. 4. Instructions to the Owner as described herein

11 5. Owner's Manuals, complete operation instructions, and spare parts lists as described herein. 6. A minimum two-year parts and labor warranty. B. The work by the Contractor generally includes the following: 1. Provide all delivery and assembly work using appropriate tradesmen as required. 2. Provide level housekeeping pads or mounting devices in accordance with the VFD Manufacturer's shop drawings. 3. Once delivered to the site, provide all handling and installation of the VFDs. 4. Provide all power wiring from the power sources to the VFD s enclosure. 5. Provide all power wiring between the VFD s and the motors. 6. Jog each motor and verify proper motor rotation. 7. Coordination and integration with Instrumentation and Control for HVAC PART 2 PRODUCTS 2.1 VARIABLE FREQUENCY DRIVES A. General 1. The variable frequency drive (VFD) motor controller shall convert 208/240/480 Volt(V) (+ 10%), three-phase, 60 Hertz (Hz) utility power to adjustable voltage (0 208V) and frequency (0-60 Hz.) three-phase, AC power for step less motor speed control with a capability of 10:1 speed range. All general options and modifications shall mount within the standard adjustable frequency controller enclosure. 2. The adjustable frequency controller shall be a space vector sine-coded Pulse-Width Modulated (PWM) design. Modulation methods that incorporate gear-changing techniques are not acceptable. Distributor or package modifications to a third-party standard product will not be allowed. One manufacturer shall supply all drives. The controller(s) shall be suitable for use with any standard NEMA-B squirrel-cage induction motor(s) having a 1.15 Service Factor or with existing standard NEMA-B squirrel-cage induction motor(s) with nameplate data as shown on the plans. At any time in the future, it shall be possible to substitute any standard motor (equivalent horsepower, voltage and RPM) in the field. The variable frequency control shall operate satisfactorily when connected to a bus supplying other solid state power conversion equipment which may be causing up to 10% total harmonic voltage distortion and commutation notches up to 36,500 volt microseconds, or when other VFD's are operated from the same bus. Individual or simultaneous operation of the VFD's shall not add more than 5% total harmonic voltage distortion to the normal bus, nor more than 10% while operating from standby generator(if applicable) per IEEE 519, If harmonic filters are required to meet these requirements, the VFD manufacturer must provide the filter, and is responsible for the design and manufacturing of the filter. 3. The controller(s) shall be suitable for use with any standard NEMA-B squirrel-cage induction motor(s) having a 1.15 Service Factor when operating off sine power and 1.0 when operating off inverter power. At any time in the future, it shall be possible to substitute any standard motor (equivalent horsepower, voltage and RPM) in the field. 4. The VFD system shall consist of an input 3% line reactor, 6-pulse converter section, output inverter, and control logic section. All components shall be factory wired and

12 tested as a complete system and shall fit into the existing MCC enclosure as shown on the Contract Drawings. 5. The drive shall have an input disconnect with through-the-door handle interlocked with the enclosure door. 6. The drive shall be protected against short circuit by three phase high speed semiconductor fuses with an interrupt rating of 65,000 AIC. 7. The drive shall a control power transformer integrally mounted with the drive enclosure. 8. The drive shall have a factory applied conformal UV coating on all printed circuit boards for dust and corrosion protection. The submittal drawing shall clearly state that the drive has the conformal coating. 9. VFD system shall maintain a.95 minimum true power factor throughout the entire speed range. B. Provide a separate VFD Unit for each device as shown in schedules on Mechanical Schedules drawing. C. Variable Frequency Drives 1. Ratings a) The drive system shall be 96% efficient at full load and full speed (VFD and input line reactor) and 95.5% efficient at 51% load and 80% speed. Losses to be utilized in drive system efficiency calculation shall include input line reactor, VFD converter, and VFD inverter. Auxiliary controls, internal VFD control boards, and cooling fans shall be included in all loss calculations. b) Rated Input Power: 208/240/480 Volts 60 Hz, +10%, -5% (at rated load), 3- phase. 1) Voltage Dip Ride-Through: VFD shall be capable of sustaining continued operation with a 40% dip in nominal line voltage. Output speed may decline only if current limit rating of VFD is exceeded. 2) Power Loss Ride-through: VFD shall be capable of a minimum 3 cycle power loss ride-through without fault activation. c) Ambient Temperature Range: 0 to 40ºC. d) Elevation: Up to 3300 feet (1000 meters) above M.S.L. without de-rating. e) Atmosphere: Non-condensing relative humidity to 95%. f) AC Line Frequency Variation: +/- 3 Hertz. 2. Construction a) The controller shall produce an adjustable AC voltage/ frequency output. It shall have an output voltage regulator to maintain correct output V/Hz ratio despite incoming voltage variations. b) The controller shall have a continuous output current rating of 110% overload for one (1) minute for variable torque applications and 150% peak for one minute for variable torque applications, at rated temperature. c) The inverter output shall be generated by IGBTs utilizing a 2 to 3 KHz carrier frequency. Pulse Width Modulation strategy will be of the space vector type implemented to generate a sine-coded output voltage. The VFD shall not induce excessive power losses in the motor. The worst case RMS motor line current measured at rated speed, torque and voltage shall not exceed 1.05 times the rated RMS motor current for pure sine wave operation. d) The control logic section shall be completely digital and not require analog adjustment pots or fixed selector resistors. A power failure will not necessitate a reload of any drive parameter or configuration

13 3. Basic Features a) The VFD shall include the following features as standard: 1) All printed circuit boards in the VFD shall be protected with a factory applied conformal coating. 2) All VFD s shall have the same operator interface/keypad regardless of horsepower rating. The keypad shall be removable, capable of remote monitoring and control, and provide a copy feature to copy parameter values from one drive to another. 3) The keypad shall offer an alphanumeric 5-line 16 character LCD display that uses plain English for set-up, programming, and monitoring. 4) The keypad shall use Hand-Off-Auto functionality to provide easy transfer from different operating modes. The keypad will offer onetouch speed set when operating in Hand mode. 5) The VFD shall be capable of providing the following displays: Output frequency (Hz) Motor speed (RPM) Motor speed (Percent) Motor current Motor power (KW) DC bus voltage Output voltage b) The VFD shall include a customer selectable automatic restart feature. When enabled, the VFD shall automatically attempt to restart after a trip condition resulting from instantaneous over current, over voltage, out of saturation or overload. For safety, the drive shall shut down and require manual reset and restart if the automatic reset/restart function (programmable for up to 9 attempts) is not successful within a customer programmable time period. Auto-Restart shall be programmable to allow for individual fault selection. c) The VFD shall be controlled by an HMI and all parameters programmed shall be as delineated in this specification section. The VFD shall be tied into the Facilities Management System (FMS) as described in the Division 23 Instrumentation and Controls section. 1) VFD shall have the capability of communicating via an RS-232, RS- 422, or RS-485 port or Ethenet. 2) VFD shall have integral Modbus communication capability. 3) VFD parameters, fault log and diagnostic log shall be downloadable via the RS-232, RS-422, or RS-485 port. 4) VFD shall have the ability to communicate into the existing HVAC controls system within the building in which it is installed. 4. Enclosure All VFD components shall not exceed the footprint dimensions as shown on the drawings. 5. Protective Features and Circuits a) Instantaneous over current and over voltage trip. b) Under voltage and power loss protection. c) Input phase loss, incoming surge, output phase loss, ground fault

14 d) Power unit over temperature alarm and protection. Upon sensing an over temperature condition, the VFD is to automatically trip. e) Electronic motor inverse time overload protection. f) Responsive action to motor winding temperature detectors or thermostatic switches. A dry contact (NC) input to the VFD is required. g) When power is restored after a complete power outage, the VFD shall be capable of catching the motor while it is still spinning and restoring it to proper operating speed without the use of an encoder. h) The VFD shall be protected from damage due to the following, without requiring an output contactor: 1) Three-phase short circuit on VFD output terminals. 2) Loss of input power due to opening of the VFD input disconnect device or utility power failure during VFD operation. 3) Loss of one (1) phase of input power. i) The VFD shall continue to operate at a reduced capacity under a single-phase fault condition. j) The VFD shall be able to withstand the following fault conditions without damage to the power circuit components: 1) Failure to connect a motor to the VFD output. 2) VFD output open circuit that may occur during operation. 3) VFD output short circuit that may occur during operation. 6. Parameter Settings a) The following system configuring settings shall be provided and field adjustable, without exception, through the keypad/display unit. Except for Motor Nameplate Data, all parameters must be adjustable while the processor is on-line and the drive is running. 1) Motor Nameplate Data. Motor frequency. Number of poles. Full load speed. Motor volts. Motor full load amps. Motor HP. Current limit, max. 2) VFD Configuration Parameters. Independent acceleration/deceleration rates. Max/Min speed (frequency). Catch-a spinning load selection. No load boost. Full load boost. Volts/Hertz ratio. Over speed trip. Overload trip curve selection. Overload trip time selection. 3) VFD Automatic Control PID utilizing an internal or external set point. 3 selectable critical speed avoidance bands with programmable bandwidth. Auto start functions: On/Off, Delay On/Off. Operable from a 4-20mA signal or from the PID output, command, or feedback signal. Speed Profile: Programmable entry and exit points. Programmable entry and exit speeds

15 Programmable loss of signal control: Stop, maintain last speed, or default to a pre-selected set point. b) All drive setting adjustments and operation parameters shall be stored in a parameter log which lists allowable maximum and minimum points as well as the present set values. 7. Input/Output Features a) Two programmable analog inputs (0-20mA/0-10V isolated). b) Two programmable analog outputs (0-20mA /0-10V isolated). c) Six isolated programmable digital inputs (24VDC). d) 1 programmable open collector output. e) Two programmable relay outputs. f) One NO fault relay. 8. Diagnostic Features and Fault Handling a) The VFD shall include a comprehensive microprocessor based digital diagnostic system which monitors its own control functions and displays faults and operating conditions. Microprocessor systems must be products of the same manufacturer as the VFD (to assure single source responsibility, availability of service and access to spare parts). b) A Fault Log shall be accessible via a RS-232, RS-422, or RS-485 serial link as well as line by line on the keypad display. The "FAULT LOG" shall record, store, display and output to a serial port upon demand, the following for the 50 most recent events: 1) Date and time of day. 2) Type of fault. 3) VFD mode (Auto/Manual) 4) Elapsed time (since previous fault) 5) Reset Mode (Auto/Manual) c) All faults and events shall be stored and displayed in English, not fault codes. d) A "HISTORIC LOG" shall record, store, and display upon demand, the following selectable control variables at 2.7M/sec. intervals for the 50 intervals immediately preceding and the 20 intervals immediately following a fault trip: C. Drive Options 1) Torque demand. 2) Torque command. 3) Torque feedback. 4) Torque error. 5) Torque maximum. 6) Current demand. 7) Peak current. 8) Motor current. 9) DC bus voltage. 10) Line voltage. 11) Velocity demand. 12) Velocity reference. 13) PI min/max limit. 14) Boost. 15) VFD mode (Auto/Manual). Provide the following options/modifications to the VFD. All special features shall be factory mounted and wired within the VFD enclosure unless otherwise specified

16 1. To protect against harsh environments the VFD shall have all circuit boards supplied with a conformal protective coating. 2. The VFD shall input fast acting semiconductor fuses with an interrupt rating of 42,000 AIC. 3. The VFD shall have an input disconnect with a through-the-door handle interlocked with the enclosure door. D. Acceptable Manufacturer s for VFD s 1. The equipment covered by this specification is intended to be standard production run equipment of proven reliability. The Contractor shall supply all units specified, and shall be responsible for their compatibility. a. A single VFD manufacturer shall supply the unit specified. The VFD shall be manufactured by: 1) Yaskawa, Inc., P7 Series, as represented by DRV, Inc; Pittsburgh, PA; (412) ) Allen Bradley Power Flex 400 Series 3) Approved Equivalent 2. Factory Based Service - A factory authorized maintenance and parts facility shall be located within a 50-mile radius of the pump installation. The facility shall have at least two factory-trained mechanics and show evidence of parts inventory for the VFD s. The facility shall also be able to supply parts within 24 hours. 2.2 TOOLS, SPARE PARTS, AND MAINTENANCE MATERIALS A. A complete set of all fasteners, bolts, nut, pins, keys, washers and the like which are not of standard manufacture. B. Provide the following spare parts for each variable frequency drive furnished: percent replacement fuses, all sizes, voltages and types percent replacement pilot light lamps. C. Spare parts shall be packed in sturdy containers with clear indelible identification markings and shall be stored in a dry, warm location until furnished to OWNER at the conclusion of the Project. PART 3 EXECUTION 3.1 INSTALLATION A. A new VFD system will be considered available for continuous service after the thirty (30)- day performance test has been successfully completed. B. Installation of Equipment 1. Contractor shall: a. Verify that motors and VFD s are compatible. b. Make adjustments required to place the VFD system in proper operating condition, including all work to coordinate and install system data information to Facilities Management System (FMS). 2. The VFDs shall be installed in accordance with the recommendations of the VFD MANUFACTURER

17 3.2 THIRTY (30) DAY PERFORMANCE TESTS A. A Thirty (30)-day Performance Test shall be completed for the VFD: 1. Each VFD shall successfully complete a thirty-day performance test. The performance test includes the motor, variable frequency drive, and associated electrical equipment. Initiation of the thirty (30)-day performance test implies that the VFD System is ready for continuous operation by the OWNER. 2. During the thirty (30)-day performance test, the VFD System shall be operated by the OWNER, as if the VFD System were a part of the OWNER s standard operating procedure. 3. The thirty (30)-day performance test shall start when the Contractor has completed installation and field testing of the VFD System and associated electrical equipment. 4. The Contractor shall notify the OWNER one week prior to the start of the thirty (30)- day performance test. 5. Failure of the electrical equipment to operate as specified shall constitute failure of the test. Failure of any one piece of the VFD System supplied by the CONTRACTOR shall constitute failure of the thirty (30)-day performance test. 6. If failure of the thirty (30)-day performance test occurs at any time during the period, then the entire thirty-day performance period shall start over. The performance test shall be restarted for as many times as necessary. 7. If failure occurs, then the Contractor shall locate and correct the problem. The Contractor shall notify the Owner when the problem has been corrected, and the thirty (30)-day performance test can again be started. 8. The OWNER may categorize a failure occurrence as a minor problem. In general, a minor problem is defined as a problem which can be completely corrected within two hours. It is up to the discretion of the OWNER whether or not failure of the system was caused by a minor problem. 9. If it is decided that failure of the system was caused by a minor problem, then the amount of downtime will be added on to the time remaining in the thirty (30)-day performance test. 10. If the same minor problem occurs more than once, then it shall be considered failure of the thirty (30)-day performance test. 11. Successful completion of the thirty (30)-day performance tests for all VFDs is a part of Substantial Completion of the Contract. 3.3 MANUFACTURER S SERVICES A. The Contractor shall furnish the services of qualified factory trained specialists from the manufacturer to instruct OWNER S operations and maintenance personnel in the recommended operation and maintenance of the Goods specified under this Section. B. Provide services of factory-trained representative of the manufacturer to correct defects found during construction and within the two-year period described in General Conditions. Replacement parts shall be equal to or better than the original. C. The manufacturer of the controls will provide installation instructions, systems checkout, calibration services and operation instructions for the entire sewage pumps control system to the installing Contractor and operations personnel. Systems checkout, calibration services and operation instructions will consist of minimum of one (1) day at job site

18 D. The Contractor shall furnish the services of qualified factory trained specialists from the VFD manufacturer for startup services. The Contractor shall provide startup services for a minimum 8-hour day with additional time at the rate established by the Contract Documents. E. All costs for VFD startup including but not limited to the service technician s hourly rate, travel costs, and living expenses shall be borne by the Contractor. 3.4 MANUFACTURES WARRANTY A. The VFD Manufacturer shall warrant the VFD Unit and all associated equipment for two years for parts and labor. The warranty period shall commence with the Owner s acceptance after the successful startup of each VFD Unit, documented by a certificate of substantial completion, but shall not exceed thirty months from the date of shipment from the manufacturer s facility. B. The VFD Manufacturer shall include in this warranty the cost of all labor including traveling and living expenses, as required, to remedy any breakdown situation relating to the VFD Units and autotransformer bypass for the warranty period. C. The VFD Manufacturer s service personnel shall be on call 24 hours per day, 7 days per week including holidays. The VFD Manufacturer shall be reimbursed for the difference in cost between the normal labor rate and premium time when warranty work is required outside of normal working hours. B. All guarantees implied or stated by the control system manufacturer shall be passed in full force to the owner. END OF SECTION

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