9-Exhibit B. Filter System Technical Specifications.pdf

Prepared For:

Charlotte Water

May 2026

TECHNICAL SPECIFICATIONS

For the Procurement of

CHARLOTTE, NC

Garver Project No. 2501151

MALLARD CREEK WWRF NPW FILTER PILOT

CERTIFICATIONS

Project No. 2501151 1 Section 00 00 01 Mallard Creek NPW Filter Pilot Certifications

MALLARD CREEK WRRF NPW FILTER PILOT

GARVER PROJECT NO. 2501151

CHARLOTTE WATER

5100 BROOKESHIRE BOULEVARD

CHARLOTTE, NC 28216

I hereby certify that the applicable portions of this project plans and specifications were prepared by me or under my direct supervision and that I am a duly Licensed Engineer under the laws of the State of North Carolina.

SEAL AND SIGNATURE

APPLICABLE DIVISION OR

PROJECT RESPONSIBILITY

D. Morgan Young, PE

Digitally Signed:

Section 40 73 13 Section 40 73 26 Section 46 61 47

J. Derek Scott, PE

Digitally Signed:

Section 40 61 96 Section 40 67 23

GARVER, LLC CERTIFICATE OF AUTHORIZATION:

NC ENGINEERING LICENSE NO. P-0305

Expiration Date: 06/30/2026

Project No. 2501151 Mallard Creek NPW Filter Pilot Table of Contents

MALLARD CREEK WRRF NPW FILTER PILOT

CHARLOTTE WATER

CHARLOTTE, NC

TABLE OF CONTENTS

TECHNICAL SPECIFICATIONS

DIVISION 40 – PROCESS INTEGRATION

40 61 96 PROCESS CONTROL DESCRIPTION – FILTERS

40 67 23 CONTROL PANELS

40 73 13 PRESSURE GAUGES

40 73 26 DIFFERENTIAL AND GAUGE PRESSURE TRANSMITTERS

DIVISION 46 – PROCESS INTEGRATION

46 61 47 SELF-CLEANING BACKWASH FILTERS

Project No. 2501151 1 Section 40 61 96 Mallard Creek NPW Filter Pilot Process Control Description – Filters

SECTION 40 61 96 – PROCESS CONTROL DESCRIPTION – FILTERS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section Includes:

1. General control strategy for filters specified in Section 46 61 47 – Self-Cleaning

Backwash Filters.

2. Description to understand and configure a common control system for three (3) filters, referred to herein as the Filter System.

B. Related Sections

1. Section 40 67 23 – Control Panels

2. Section 46 61 47 – Self-Cleaning Backwash Filter

C. Deviations

1. Bidders shall bring to the attention of the City any deviations from the requirements specified prior to submitting a bid.

2. Manufacturer specific requirements such as additional valves and instrumentation system required for a working system are acceptable provided that all equipment and materials are furnished, tagged, and configured with the standards and requirements.

1.2 REFERENCES

1. See Invitation to Bid.

1.3 EQUIPMENT AND INSTRUMENTATION

A. Valves:

Equipment Tag*

Name Operator Remote

Operation FCV01 Filter Backwash Valve #1 MO OC FCV02 Filter Backwash Valve #2 MO OC FCV03 Filter Backwash Valve #3 MO OC

*Equipment quantity and tags are dependent upon recommendations from the Filter System Supplier.

B. Instruments:

1. Analog Instruments:

Tag

Name Nominal Range

FP01 Filter Influent Pressure 0-150 psig FP02 Filter Discharge Pressure 0-150 psig

C. Control Panels and Local Control Stations:

Name Existing/ Proposed

FCP Filter System Control Panel Proposed

Project No. 2501151 2 Section 40 61 96

D. Controllers:

Name

FPLC Filter System PLC

1.4 PROCESS DESCRIPTION

A. General: the new Filter System shall include a set of three (3) filters. These filters will be installed, by the Installation Contractor, in parallel with a common influent header and discharge header provided and installed by the Installation Contractor. The new Filter System will receive flow from the City's existing NPW pump station and will be discharged back to the primary distribution system. Under normal operating conditions, filter backwash will be controlled automatically based on operator mode selection and operator set points. The controls described in this section are based on the known functionality of systems provided by Forsta Filters, Inc.

Systems provided by other listed manufacturers shall be acceptable provided they meet the process requirements and operate as generally described in this section. Motorized and non-motorized systems for cleaning are acceptable.

B. Controls Configuration: the new Filter System shall include a local control panel with a PLC referred to herein as the Filter Control Panel and Filter System PLC, respectively. The Filter System Control Panel shall have an operator interface terminal (OIT) on the face of the panel.

Complete control of the system shall be provided on the OIT. The PLC and OIT shall be networked, over Ethernet, to the City's existing SCADA network at the Mallard Creek WRRF.

Remote control over the City's SCADA network is not required. Remote monitoring over the City's SCADA network shall include all I/O and alarms critical for understanding the Filter System's operating status and key process control variables. The City uses Ignition by Inductive Automation for SCADA software. Modifications to the City's existing SCADA system for integration of the Filter System will be performed by the City or the City's Control Systems Integrator. The Filter System Supplier shall furnish register maps, panel drawings, and any information required for integration.

C. Automatic Mode:

1. There will be two automatic modes that the operator will select from the OIT. The first automatic mode is the Analog Disabled mode, where the system will monitor the differential input from the remote mounted gauges. The second mode, Analog Enabled, has the system monitor the two transducer inputs for a high differential pressure set point, set by the user to initiate a backwash cycle.

2. Operation Sequence

a. Controller starts the Start delay. When this delay expires, the controller will change state from STANDBY to MAIN VALVE ON.

b. When main valve open delay expires, the controller will change state to FILTER 1

BACKWASH.

1) Controller will signal Valve #1 to open and switch the DC voltage to DC

Motor #1. Backwash Delay timing will start.

2) When backwash delay is complete, the controller will signal the valve for

FILTER #1 to close, will switch the voltage off to the DC motor #1. If no other valves are utilized the state will change to SETTLING DELAY, signal the main valve to close, and start the SETTLING delay. If valve #2 is being utilized, then the state will change to DWELL ACTIVE and start the DWELL delay.

c. When the DWELL delay is complete, the state will change to FILTER 2

BACKWASH.

Project No. 2501151 3 Section 40 61 96

1) Repeat the operation sequence described in 1.4.B.2.b until all filters have been monitored and/or backwashed. After the final filter settling delay is complete, the state will change to STANDBY.

3. While filters can be manually assigned priority levels, an automatic filter rotation strategy shall also be provided. When Auto Rotation is selected, the PLC shall continuously compare runtimes of all available filters (available = in remote, not in fault, etc.). The filter with the lowest runtime will be assigned the lead priority, the filter with the next lowest runtime will be assigned lag priority. The remaining filter, or any filter(s) determined to be “not available” will be assigned as standby. Any filter in standby will not be called by any auto control strategy. Filters shall not change priority status while in operation. The PLC shall track runtimes of each filter for this purpose. Each runtime value will be adjustable by an operator of appropriate security/access level (specifics to be coordinated with the City.

1.5 OIT CONTROLS

A. Control Setpoints:

1. The following table lists the expected new adjustable control setpoints that will be added to the OIT graphics. The table should be utilized for initial system set up. Some control variables may require historical data logging for populating trends and reports.

Control Setpoint Entry Range Default Description

Periodic 0-24 hrs 0 hrs Sets a timed flush cycle. Set this value to zero (0) if this function is not to be utilized.

Flush 10-150 sec 20 sec Sets how long the controller will hold the valve open for the flush cycle.

Dwell 0-59 sec 5 sec Sets how long the controller will wait between the valve flush operations during the flush cycle.

# of Filters 0-15 3 Total filters (valves) to be included in the backwash cycle.

Alarm Cycles 1-20 3

Allows for the selection of how many cycles the controller will perform without the digital or analog differential pressure being cleared before an alarm will occur.

Start Delay 0-59 sec 3 Delay time before system will backwash when differential limit has been reached.

Settling Timer 0-59 sec 10 Time delay after system is done backwashing before another cycle can begin.

B. Process Variables

1. The following table lists the expected new process variables related to the control strategy that will be added to the OIT graphics. Not all variables (such as filter run statuses, valve open/closed statuses, etc.) are listed. Variables may require event change data logging by the alarm server or historical data logging by the historian for populating trends and reports.

Process Variable Units Trend Default Range

NPW Pump Station Discharge Flow Rate gpm 220-3200 gpm

Project No. 2501151 4 Section 40 61 96

C. Alarms

1. The following table lists the expected alarms that will be added to the OIT graphics.

Alarm priority shall be determined through coordination with the City during submittal review. Alarms described under the Common Control Strategies portion of this specification are not listed in this table but shall be provided as applicable.

Alarms Description

Backwash Alarm An alarm will trigger after a set number of backwashes if differential pressure is not cleared.

1.6 COMMUNICATION INTERFACES

A. Data will be communicated over the City's existing SCADA network.

END OF SECTION

Project No. 2501151 1 Section 40 67 23 Mallard Creek NPW Filter Pilot Control Panels

SECTION 40 67 23 – CONTROL PANELS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section Includes:

1. All control panels provided as part of the project, including those provided as part of a manufacturer supplied system specified in other Divisions.

2. The Work to furnish and install functional control panels to operate control systems manually or automatically as specified in this and related sections.

B. Related Sections:

1. Section 40 61 96 - Process Control Description - Filters

2. Section 40 61 47 - Self-Cleaning Backwash Filters

1.2 REFERENCES

A. NEMA

1. Standard ICS 2 – 2000 Industrial Control and Systems

B. NFPA

1. 70 – National Electrical Code (NEC)

2. 70E – Standard for Electrical Safety in the Workplace

3. 79 – Electrical Standard for Industrial Machinery

C. UL

1. 508/508A – Industrial Control Enclosures

D. All equipment components and completed assemblies specified in this Section shall bear the appropriate label of Underwriters Laboratories.

1.3 SUBMITTALS

A. See Invitation to Bid for project-specific submittal requirements.

B. Action Submittals:

1. Shop Drawings and Product Data:

a. Custom unit elementary drawings. Drawings shall include all schematics for control logic as described in the Process Equipment Specifications. Show interconnections between components and to remotely mounted devices. Include and identify all connecting equipment and remote devices on the schematics. The notation “Remote Device” will not be acceptable. Show wire and terminal numbers.

Specify special identifications for devices as required by the mechanical equipment manufacturer.

b. Equipment outline drawings showing elevation, plan and interior views, front panel arrangement, dimensions, weight, shipping splits, conduit entrances and anchor bolt pattern. Specify all options, special features, ratings, and deviations from this Section.

c. Power and control schematics including external connections. Show wire and terminal numbers and color-coding.

d. Custom networking diagrams for each panel. Depict all Ethernet (copper or fiber) devices in the panel and how they are connected. Show all interconnecting cables, including those leaving the enclosure with destination label.

Project No. 2501151 2 Section 40 67 23

e. Instruction and replacement parts books, including manufacturer’s part numbers and selections of component ratings.

f. As-built final drawings.

g. Documentation that the panel assembly facility is a UL-508 certified facility.

h. Furnish complete Bill of Materials specifying manufacturer's name and part numbers.

i. Manufacturer’s cut sheets for every component used in the panel assembly adequately marked to show the items being included. The manufacturer’s name shall be clearly visible on each cut sheet submitted.

j. Assembly Ratings:

1) Short-circuit rating

2) Voltage

3) Continuous current

k. Major Component Ratings:

1) Voltage

2) Continuous current

3) Interrupting ratings

l. Cable terminal sizes

m. Instruction and renewal parts books.

C. Informational Submittals:

1. Factory Tests:

a. Submittals shall be made for factory tests specified herein.

2. Field Test Reports:

a. Submittals shall be made for field tests specified herein.

3. Quality program and procedures.

4. Operation and Maintenance Manuals:

a. Include Manufacturer’s contact address and telephone number for parts and service.

b. Include Instruction books and/or leaflets.

c. Include Recommended renewal parts list.

d. Include Record Documents for the information required by the Submittals paragraph above.

1.4 QUALITY ASSURANCE

A. Submittals shall contain information on related equipment to be furnished under this section but described in the related sections listed in the Related Work paragraph above. Incomplete submittals not containing the required information on the related equipment will also be returned unreviewed.

B. The equipment manufacturer shall create all equipment shop drawings, including all wiring diagrams. All equipment shop drawings shall bear the mechanical equipment manufacturer’s logo, drawing file numbers, and shall be maintained on file in the mechanical equipment manufacturer’s archive file system.

C. The manufacturer shall submit for approval, a training agenda for all training specified herein.

Training agenda shall not be submitted until final approval of the Operation and Maintenance Manual.

D. The manufacturer of the control panels shall have produced similar equipment for a minimum period of five (5) years. When requested by the City, an acceptable list of installations with similar equipment shall be provided demonstrating compliance with this requirement.

E. The control panels shall be assembled in a UL-508 certified facility. A submittal of documentation certifying that the panel fabrication facility is a UL-508 certified facility, is

Project No. 2501151 3 Section 40 67 23 required. A UL label shall be affixed to the inside of the external door by the panel fabrication assembly.

F. All components and material shall be new and of the latest field proven design and in current production. Obsolete components or components scheduled for immediate discontinuation shall not be used.

1.5 DELIVERY, STORAGE AND HANDLING

A. Prior to delivery, the Filter System Supplier shall have successfully completed all submittal requirements, and present to the City upon delivery of the equipment, an approved copy of all such submittals. Delivery of incomplete constructed equipment, onsite factory work, or failed factory tests will not be permitted.

1.6 WARRANTY

A. The manufacturer shall warrant the equipment to be free from defects in material and workmanship for the same length of time as the associated mechanical equipment, but not less than 1 year from the date of final acceptance of the equipment by the City. Within such period of warranty, the manufacturer shall promptly furnish all material and labor necessary to return the equipment to new operating condition. Any warranty work, requiring shipping or transporting of the equipment, shall be performed by the manufacturer, at no expense to the City.

B. See Invitation to Bid for additional requirements.

PART 2 - PRODUCTS

2.1 RATINGS

A. The service voltage shall be as specified. The overall short circuit withstand and interrupting rating of the equipment and devices shall be not less than 22,000 amperes RMS symmetrical for panels operating at 480/277 V, and equal to or greater than the overall short circuit withstand and interrupting rating of the feeder device immediately upstream of the Control Panel. This includes all circuit breakers and combination motor starters. Systems of motor controllers employing series connected ratings for main and feeder devices shall not be used. Motor starter units shall be tested and UL 508A labeled for the specified short circuit duty in combination with the motor branch circuit protective device. The overall short circuit rating of the panel shall be not less than 10,000 amps RMS symmetrical for panels operating at 120 VAC.

B. There shall be selective device coordination between the Main Breaker, Feeder Breakers, and control circuit protective devices. When using a circuit breaker or fuses as a main protective device, the instantaneous trip levels of the main protective device shall be higher than the available fault current to the control panel. If fuses are utilized in the control panel design, the protective devices for 3-phase loads shall contain single phase protection of such equipment. If a fault occurs in the circuit of one load of a design with a backup load, the feeder protective device shall not remove both loads from the control system.

C. The complete control panel assembly shall be UL certified and carry a UL listing for "Industrial Control Panels".

D. The control panel shall meet all applicable requirements of the NEC.

E. The control panel enclosure shall be NEMA rated as specified in this section.

Project No. 2501151 4 Section 40 67 23

F. Motor controllers, including associated devices, shall be designed for continuous operation at rated current in a 50°C ambient temperature.

2.2 CONSTRUCTION

A. General:

1. Submit actual layout and location of equipment and components; current ratings of devices, bus bars, components; protective relays, voltage ratings of devices, components, and assemblies; and other required details. NEMA ratings of all devices shall meet or exceed the rating of each panel.

2. Nameplates:

a. Exterior:

1) Nameplates shall be engraved, laminated impact acrylic. Nameplates shall be 316 SS screw mounted to all enclosures except for NEMA 4 and 4X.

Nameplates for NEMA 4 and 4X enclosures shall be attached with double faced adhesive strips. Prior to installing the adhesive nameplates, the metal surface shall be thoroughly cleaned with 70% alcohol until all residues have been removed. Epoxy adhesive or foam tape is not acceptable.

2) There shall be a master nameplate that specifies supply voltage equipment ratings, short circuit current rating, manufacturer's name, shop order number and general information. Cubicle nameplates shall be mounted on the front face, on the rear panel and inside the assembly, visible when the rear panel is removed.

3) Provide permanent warning signs:

4) "DANGER – HIGH VOLTAGE – KEEP OUT" on all doors.

5) "WARNING – HAZARD OF ELECTRIC SHOCK – DISCONNECT POWER

BEFORE OPENING OR WORKING ON THIS UNIT" on Main Power Disconnect or Disconnects.

b. Internal:

1) Provide the panel with a UL 508A label.

2) Control components mounted within the assembly, such as fuse blocks, relays, pushbuttons, switches, etc., shall be suitably marked for identification, corresponding to appropriate designations on manufacturer's wiring diagrams.

3. Control Devices and Indicators:

a. All operating control devices, indicators, and instruments shall be securely mounted on the panel door. All controls and indicators shall be 30mm, NEMA 4X/13 for outdoor panels, NEMA 4/13 for indoor panels, anodized aluminum or reinforced plastic. Booted control devices are not acceptable. Auxiliary contacts shall be provided for remote run indication and indication of each status and alarm condition. Additional controls shall be provided as specified herein and as required by the detailed mechanical and electrical equipment requirements.

b. Indicator lamps shall be LED type. For all applications, indicator lamps shall incorporate a push-to-test feature.

c. Mode selector switches (HAND-OFF-AUTO, LOCAL-OFF-REMOTE, etc.) shall have the number of positions and contact arrangements, as required. Each switch shall have an extra dry contact for remote monitoring.

d. Panel meters for digital display of analog signal values shall be provided where specified. Panel meters shall be 4mA – 20mA loop powered, 1/8 DIN LCD displays, Precision Digital Model PD 6600 series or equal.

e. Panel Interface Connector (PIC): Each control panel with a PLC shall include a PIC mounted on the outside of the enclosure for providing an Ethernet connection to internal devices. The PIC shall include a 120 VAC single phase duplex receptacle with 3 Ampere externally resettable circuit breaker and an RJ45 pass-through connector.

Project No. 2501151 5 Section 40 67 23

f. Furnish nameplates for each device. All nameplates shall be laminated plastic, black lettering on a white background, attached with stainless steel screws. Device mounted nameplates are not acceptable.

g. The manufacturer shall not remove, reuse, alter, or replace original equipment nameplates or equipment tags associated with equipment or components supplied by the manufacturer’s suppliers and sub-suppliers.

4. Control Relays:

a. Provide relays as required to implement specified control functions. General purpose, alternating and time delay relays may be used within their ratings for logic, timing and sequencing but shall not be used to drive loads in excess of 80% of their contact "make" or "break" ratings. Provide interposing power relays to drive loads such as starters larger than NEMA size 1 and all other utilization equipment with loads greater than specified for general purpose and time delay relays.

Provide relays rated to drive the load as required. Relays shall be provided with an LED status indicator.

b. Discrete Input and Output Relays: Terminal block style interposing relays shall be used for all controller inputs and outputs. No field instruments or device signals shall interface directly with PLC input or output modules without the use of an interposing relay. Devices shall be PLC-RSC series as manufactured by Phoenix Contact or equal. Provide pullup or pulldown resistors on all digital outputs as required for the application.

5. Control and Instrument Power Transformers:

a. Control power transformers shall be provided. Transformer shall be sized for the entire load, including space heaters, plus 25% spare capacity, and shall be not less than 100VA.

b. Control power transformers shall be 120 V grounded secondary. Primary side of the transformer shall be fused in both legs. One leg of the transformer secondary shall be solidly grounded, and the other leg shall be fused.

c. Control power transformers shall be installed inside the control panel that they serve. They shall not be mounted exterior to the panel.

6. Power Supplies:

a. When required, the control panel shall be furnished with a separate DC power supply to provide DC power for control panel components and the loop power for 2-wire instruments. The power supplies shall be DIN rail mounted, 120 VAC input, 24VDC output, with output load rated as required for the connected loads. Power supplies shall be provided by Phoenix Contact, Allen-Bradley, or Sola.

b. These power supplies must be wired in parallel through a redundancy diode to ensure that a single power supply failure does not result in a loss of DC power.

Each power supply shall be independently capable of meeting all DC power load requirements of the panel. Redundancy diodes shall be of the same manufacturer as the power supplies.

7. Surge Protection:

a. Provide a surge protection device installed on the incoming power source to protect control panel components from electrical surge damage. Surge device shall be rated for the voltage and phase of the incoming power source.

8. Phase Monitor:

a. For control panels powering three phase motors with across-the-line or reduced voltage starters, provide a phase monitoring relay wired into the motor start circuits to stop motors during a loss of phase condition. Motor Saver Model 460 or equivalent.

9. Motor Control Reset:

a. For panels controlling motors:

1) Provide a physical reset button on the face of the panel that resets all controllers, overloads, and interlock circuits.

Project No. 2501151 6 Section 40 67 23

2) Provide an automatic reset feature whereby any electronic motor controller or fail-safe interlock circuit is automatically reset when power is lost and subsequently restored to the panel.

10. Manual Operation

a. Where control panels are provided with programmable logic controllers (PLCs) in conjunction with motor starting equipment, the panel shall be provided with the capability to run all motors in a manual mode in the event of PLC failure.

11. Interior Lighting:

a. Each control panel provided with a PLC shall contain an LED lighting fixture to illuminate internal control panel components. The fixture shall be mounted near the top of the control panel in manner that does not inhibit access to DIN rail mounted devices and shall be marketed for such application by the manufacturer.

b. The lighting fixture shall be 120 V rated and automatically illuminate when panel door(s) is(are) opened.

12. Intrusion Detection:

a. Each control panel provided with a PLC shall contain intrusion switches capable of determining the open/close state of the enclosure door(s). The switch(es) shall be wired to a compatible digital input I/O point.

13. High Temperature Detection:

a. Each control panel provided with a PLC shall contain a temperature switch, regardless of installation location or the presence of environmental conditioning.

The switch shall be located in a manner to read the highest internal ambient temperature present within the control panel enclosure. The switch shall be wired to a compatible digital input I/O point.

b. The temperature switch shall have an adjustment range of 90°F–140°F. The switch shall be set to change state at 105°F unless otherwise indicated.

B. Enclosures:

1. General:

a. Each enclosure shall incorporate a removable back panel, and side panels, on which control components shall be mounted. Back panel shall be secured to the enclosure with collar studs for wall mounted enclosures, and 316 SS hardware for free standing enclosures.

b. All freestanding enclosures shall be provided with feet of the same construction as the enclosure.

c. Back panel shall be tapped to accept all mounting screws. Self-tapping screws shall not be used to mount any components.

d. All enclosure doors shall have bonding studs. The enclosure interior shall have a bonding stud.

e. Each enclosure shall be provided with a documentation pocket on the inner door.

f. Enclosures shall not have holes or knockouts.

g. Provide manufacturer’s window kits where specified.

h. All enclosures shall be able to be padlocked.

2. NEMA 4X:

a. NEMA 4X 316 Stainless Steel

b. Type 316 stainless steel, body, and door

c. Stainless steel continuous hinge

d. Foam gasket.

e. Minimum size: 30" wide by 36" high by 12" deep.

f. 3-point latch.

g. Manufacturers

1) Hoffman Comline Series

2) EMF Company

3) NEMA Enclosures Company

4) Hammond Company

5) Or Approved Equal.

Project No. 2501151 7 Section 40 67 23

3. NEMA 12: Not used.

C. Environmental Conditioning:

1. Air Conditioning: Not used.

2. Ventilation: Not used.

3. Condensation Control:

a. A self-contained enclosure condensation heater with thermostat and fan shall be mounted inside control panels.

1) Enclosure heaters shall be energized from 120 V, single-phase power supply and sized to prevent condensation within the enclosure.

2) Locate enclosure heaters to avoid overheating electronic hardware or producing large temperature fluctuations on the hardware.

3) Enclosure heaters shall have an internal fan for heat distribution and shall be controlled with adjustable thermostats. The thermostat shall have an adjustment range of 40°F–90°F. Provide a circuit breaker or fused disconnect switch within the enclosure.

4) Enclosure heaters shall be Hoffman type DAH or equal.

D. Internal Wiring:

1. Power and control wiring shall be tinned stranded copper, minimum size No. 16 AWG, with 600 V, 90°C, flame retardant, Type MTW thermoplastic insulation. Line side power wiring shall be sized for the full rating or frame size of the connected device.

2. Analog signal wires shall be 600V Class, insulated stranded tinned copper, twisted shielded #18 AWG pair.

3. All interconnecting wires between panel mounted equipment and external equipment shall be terminated at numbered terminal blocks. Field wiring shall not be terminated directly on any panel-mounted device.

4. All wiring shall be tagged and coded with an identification number. Coding shall be typed on a heat shrinkable tube applied to each end showing origination and destination of each wire. The marking shall be permanent, non-smearing, solvent-resistant type similar to Raychem TMS-SCE, or equal.

5. All wiring shall be enclosed in PVC wire trough with slotted side openings and removable cover. Plan wire routing such that no low twisted shielded pair cable conducting analog 4mA – 20 mA signals or low voltage analog signals are routed in the same wire trough as power conductors carrying greater than 120V.

6. Both AC and DC power distribution within the panel shall be provided with 20% spare termination points to simplify the supplying of power to future device.

7. All control panel wiring shall use color coding:

a. Black: AC power at line voltage

b. Red: switched AC power

c. Orange: May be energized while the main disconnect is in the off position

d. White: AC neutral

e. Orange/white stripe or white/orange stripe: separate derived neutral

f. Red/white stripe or white/red stripe: switched neutral.

g. Green or green w/ yellow tracer: ground/earth ground

h. Blue: Ungrounded DC power

i. Blue/white stripe or white/blue stripe: DC grounded common

j. Brown: 480 V AC 3-phase – phase A

k. Orange: 480 V AC 3-phase – phase B

l. Yellow: 480 V AC 3-phase – phase C

m. Purple: common for analog signal wiring

n. Brown: positive leg of an analog signal

E. Terminal Blocks:

Project No. 2501151 8 Section 40 67 23

1. Terminal blocks shall be DIN-rail-mounted one-piece molded plastic blocks with tubular-clamp-screw type and end barriers. Terminal blocks shall be rated for 600 V except for control and instrumentation circuits, or 4 mA – 20 mA analog signal conductors.

2. Provide 600 V rated terminal blocks for any conductor carrying any voltage over 120 V to ground.

3. Provide 600 V rated strap screw terminal blocks for any power conductors carrying over 20 amps, at any voltage. Terminals shall be double sided and supplied with removable covers to prevent accidental contact with live circuits.

4. Power conductors carrying over 20 amps, at any voltage shall be terminated to strap-screw type terminal blocks with crimp type, pre-insulated, ring-tongue lugs. Lugs shall be of the appropriate size for the terminal block screws and for the number and size of the wires terminated. Do not terminate more than one conductor in any lug, and do not land more than two conductors under any strap-screw terminal point.

5. Terminals shall have permanent, legible identification, clearly visible with the protective cover removed. Each terminal block shall have 20% spare terminals, but not less than two spare terminals.

6. Use the manufacturer’s provided bridge connectors to interconnect terminal blocks terminating common or ground conductors.

7. Twisted shielded pair or triad cables shall have each individual conductor and shield drain wire landed on individual terminal blocks. Use the manufacturer’s provided bridge connectors to interconnect terminal blocks terminating the shield drain wire conductors.

8. Control circuits, 120 V and below, and 4 mA – 20 mA analog signal conductors shall be terminated with manufacturer’s recommended insulated connectors.

9. Current Loop Surge Protection Devices: The 4 mA – 20 mA signal loop channels on analog inputs and outputs shall be protected against static discharge, lightning, and faulty wiring with three stage surge protection terminal block devices. Devices shall be pluggable with indication status lights. Devices shall be PLUGTRAB series as manufactured by Phoenix Contact or equal.

10. Group and organize all I/O field termination terminal blocks, relays, and analog surge suppressors by their associated I/O module. Discrete inputs, discrete outputs, analog inputs, and analog outputs must be grouped together, in order of their channel on the I/O card, and separated by terminal block flags indicating the respective rack and slot for that group. For example, if a card is located in rack 1, slot 2, the flag should be labeled "R1S2" or similar. Each I/O group should include the appropriate number of terminal block-style interposing relays for discrete inputs and outputs, and analog signal surge suppressors for analog inputs and outputs.

11. Fused terminal blocks shall be used for all DC branch circuits within the panel and any controls signals leaving the enclosure carrying panel power and returning (e.g., conductors on the wet side of dry contacts in the field). AC and DC fused terminal blocks must be grouped separately. Fused terminal blocks shall be Phoenix Contact UT 4- HESILA 250 or approved equivalent.

12. All wiring to hazardous locations shall terminate in intrinsically safe barrier devices.

13. Provide an AC ground bar bonded to the panel enclosure (if metal) with 20% spare terminals.

14. Provided ground terminal blocks for each twisted-shielded pair drain wire.

2.3 MAIN CIRCUIT PROTECTIVE DEVICE

A. For panels operating at 480 VAC, unless otherwise shown on the Drawings, the main circuit protective device shall be a molded case (MCCB), 3 Pole, 600 V, fixed type, manually operated with stored energy closing mechanism. For MCCBs 200A and larger, trip device shall be solid state with adjustable long time pickup, and delay; adjustable short time pickup and delay; and short time i2t switch. Provide ground fault pickups where specified.

1. Provide a flange mounted main power disconnect operating handle with mechanical interlock having a bypass that will allow the panel door to open only when the switch is in

Project No. 2501151 9 Section 40 67 23 the OFF position. Where panels are shown or specified with inner and outer doors, disconnecting handles and controls shall be located on the inner door.

2.4 ACROSS THE LINE MOTOR CONTROLLERS

A. General:

1. Provide the NEMA size starter, circuit breaker trip ratings, control power transformers and thermal overload heater element ratings matched to the motors and control equipment actually supplied, in compliance with the NEC and the manufacturer’s heater selection tables. All variations necessary to accommodate the motors and controls as actually furnished shall be made without extra cost to the City.

2. Furnish lugs for incoming wiring. Allow adequate clearance for bending and terminating of cable size and type specified.

3. A NEMA rated magnetic motor starter shall be furnished for each motor. Each motor starter shall be provided with a motor circuit protector, or circuit breaker, and equipped to provide undervoltage release and overload protection on all three phases. The short circuit protective device shall have an adjustable magnetic trip range up to 1,400% of rated continuous current and a trip test feature. MCPs shall be labeled as specified in UL489. NEMA starter sizes and breaker trip ratings shall be as required for the horsepower specified but shall be in no case less than NEMA Size 1. If the manufacturer of the equipment utilizing the motor, supplies a motor horsepower larger than that specified, the Contractor shall supply a motor starter sufficient in size to control the motor supplied.

4. A mechanical disconnect mechanism, with bypass, shall be installed on each motor circuit protector, capable of being locked in the "OFF" position to provide a means of disconnecting power to each motor. Disconnects mechanisms shall be located inside the enclosure such that the main circuit breaker handle is the only device interlocked with the panel door.

5. Each motor starter shall have a 120 V operating coil unless otherwise noted.

6. Overload relays shall be electronic type with adjustable features and remote reset. A normally closed contact shall be directly used in the start circuit and a normally open contact shall be wire to a terminal board for overload alarm.

7. All interfaces between control panel and remote devices shall be isolated via an interposing relay. Interposing relays shall have contacts rated for 250 VAC and 10 Amps continuous. Relays shall be Control Relays as specified herein.

B. Magnetic Motor Starters

1. Motor starters shall be 2 or 3 pole, single or 3-phase as required, 60 Hertz, 600V, magnetically operated, full voltage non reversing.

2. Each motor starter shall have a 120V operating coil, and control power transformer.

Starters shall have motor overload protection in each phase. Auxiliary contacts shall be provided. A minimum of one N.O. and one N.C. auxiliary contacts shall be provided in addition to the contacts required.

3. Overload relays shall be electronic, adjustable, with remote and local reset.

4. Built in control stations and indicating lights shall be furnished.

5. All wires shall be terminated on terminal blocks and shall be tagged.

6. Provide as built wiring diagram and post it in a protective cover inside the cell.

C. Contactors

1. Contactors shall be a circuit breaker and contactor, 600 V, 3-pole, 60 Hz, magnetically operated. NEMA size shall be as required for the kilowatt ratings required for the equipment provided but shall be not less than NEMA size 1.

2. Contactors shall have a 120 V operating coil and control power transformer. Furnish the control power transformer with extra capacity for the unit heater fan.

D. Control Relays

Project No. 2501151 10 Section 40 67 23

1. Control relays shall be 300V, industrial rated, plugin socket type, housed in a transparent polycarbonate dust cover, designed as specified in UL Standard 508 for motor controller duty. Continuous contact rating shall be 10 amps resistive, 1/4 HP at 120 VAC, operating temperature -10°C–55°C. Provide spare N.O. & N.C. contacts. Relays shall be Potter & Brumfield KRP Series or equal with neon coil indicator light. Timing relays shall be 300 V, solid state type, with rotary switch to select the timing range.

E. Elapsed Time Meter

1. A six-digit, non-resettable elapsed time meter shall be installed on the face of each motor starter.

2.5 REMOTE MONITORING AND CONTROL INTERFACE

A. General:

1. All control and interconnection points from the equipment to the plant control and monitoring system shall be brought to dedicated terminal blocks. No field connections shall be made directly to the equipment control devices. Functions to be brought out shall be as specified in related specification sections.

B. Discrete control or status functions shall be form C relays with contacts rated at 120 V AC.

Analog signals shall be isolated from each other.

2.6 PROGRAMMABLE LOGIC CONTROLLERS (PLC)

A. General:

1. All PLCs included shall meet the following requirements:

a. Processor Module

1) Manufacturer:

a) Schneider Electric M340 Series BMXP342020

2) Components:

a) Memory: 4 MB

b) Ports:

i. (1) USB

ii. (2) RJ-45 Ethernet

c) Memory Card: 8MB

b. Ethernet Module

1) Manufacturer:

a) Schneider Electric BMXNOC0401

2) Components:

a) Ports: (4) RJ-45 Ethernet

c. The following I/O modules as required for the application.

1) BMXDAI1604: 16-Channel 120VAC Digital Input Module

2) BMXDRA1605: 16-Channel Isolated Relay Output Module

3) BMXAMI0810: 8-Channel Isolated Analog Input Module

4) BMXAMO0410: 4-Channel Isolated Analog Output Module]

B. Features:

1. Each PLC shall be installed with a minimum of 25% spare I/O points of each type utilized in its I/O structure. Each spare I/O point shall be wired to interposing relays and terminal blocks in same fashion as other I/O points.

2. Each PLC shall have a removable nonvolatile memory card installed with capacity greater than or equal to processor internal memory. The controller shall be configured to load a copy of the program from nonvolatile memory whenever there is no project in the controller and power is applied.

3. The PLCs shall be capable of and shall be configured to provide stand-alone operation in the event of a communications link failure.

Project No. 2501151 11 Section 40 67 23

4. The necessary interface cables, communications cables, power cables, bus extension cables, modular card slot fillers, and other ancillary parts shall be furnished and installed as integral parts of the control system.

5. Nameplates shall be provided for each module, device, and other equipment with appropriate data such as the equipment number, rating, serial number, and manufacturer.

6. All I/O cards shall be furnished with removable terminal blocks to simplify card wiring and replacement.

C. Execution:

1. Any PLC furnished as part of an equipment manufacturer package, shall be accessible for future program monitoring and revisions. If password protection of any kind is implemented, the manufacturer shall supply all passwords or other security information to the City.

2. The equipment manufacturer shall furnish the City final as-built copies of all documented PLC programs, including manufacturer equipment packages, on electronic media, suitable for future troubleshooting or modifications by others.

3. All components and assemblies shall be installed as specified in the manufacturer’s installation instructions.

2.7 OPERATOR INTERFACE TERMINALS (OIT)

A. General:

1. Where specified within an equipment section, an OIT shall be mounted on the front of the control panel for display and control of process-specific graphics.

2. OITs shall:

a. Schneider Electric Harmony Series

b. Minium size: 10" (nominal).

c. Provide Ethernet Modbus TCP Communication.

d. Provide devices with 2GB memory card.

e. Provide nonglare screen protector. For OITs installed outdoors, provide hinged weatherproof cover.

f. OITs may also be referred to throughout contract documents as Human Machine

Interface (HMI).

B. Execution:

1. Any OIT furnished as part of an equipment manufacturer package, shall be accessible for future program monitoring and revisions. If password protection of any kind is implemented, the manufacturer shall supply all passwords or other security information to the City.

2. The equipment manufacturer shall furnish the City final as-built copies of all documented programs, including manufacturer equipment packages, on electronic media, suitable for future troubleshooting or modifications by others.

3. All components and assemblies shall be installed as specified in the manufacturer’s installation instructions.

2.8 NETWORK DEVICES

A. Switches:

1. Din-Mount Network Switches:

a. Manufacturer and Product List:

1) Hirschmann BRS40, without exception.

b. Description:

1) Provide with RJ-45 and fiber ports as required for the application. Provide a minimum of two (2) spare RJ-45 ports and two (2) fiber ports for future

Project No. 2501151 12 Section 40 67 23 connections. Provide at least two (2) fiber ports whether or not fiber connections are required.

2) Type: Managed, Layer 2

3) Ports: Minimum of 4 with Gigabit Ethernet on switches greater than 4 ports

4) Security: Port security, secure connections (SSH and HTTPS)

5) Features: Support VLANs, SNMPv3, Rapid Spanning Tree (RSTP), and

Quality of Service (QoS)

6) Power: 24 VDC

7) Modular Design: Accepts small form-factor pluggable (SFP) media modules.

8) PoE: 802.3at PoE+ (as required)

B. Media Converters:

1. Manufacturer and Product List:

a. Cisco

b. Moxa

2. Description:

a. 10/100/1000 Base-TX to 100Base-FX autosensing media converter.

b. Equipped with one RJ-45 Base-TX port and one LC or SC type Base-FX port.

c. Shall comply with IEEE 802.3.

d. Power supply: 24 V or 120 VAC. Provide power supply sized for the converter if required.

C. Surge Protection:

1. Copper Ethernet cables entering control panels from other sources shall be protected against static discharge, lightning, and faulty wiring with network surge protective devices. The devices shall have integral RJ-45 connectors with all lines protected.

2.9 UNINTERRUPTIBLE POWER SUPPLY (UPS)

A. Each control panel provided with a PLC shall contain a UPS to provide seamless and continuous operation of control panel equipment during power outages. A "UPS OK" discrete signal shall be wired to a compatible digital input I/O point.

B. The UPS shall provide backup power:

1. Falcon SSG1.5K-1T or equal.

2. Full load operation in -20°C to 55°C temperature range.

3. Battery life: 12 years at 25°C, 4 years at 50°C.

4. Fault, overload, and replace batteries indicators.

5. Voltage input: 120 VAC single phase

6. Voltage output: 120 VAC single phase

7. Output power capacity: 1,000 watts/1,500VA minimum

8. Hot-swappable batteries.

C. To ensure the preservation of battery health, UPS batteries shall not be connected, nor the UPS activated, prior to installation in the field. Upon installation, manufacturer instructions shall be followed to connect the batteries and activate the UPS system. Any premature activation or connection of the UPS batteries before field installation could result in reduced battery performance and lifespan and shall result in the replacement of batteries at no additional cost to the City.

2.10 SPARE PARTS

A. Provide spare parts in the quantities specified:

1. Six replacement fuses, all types and sizes.

2. One replacement lamp of each color, for pilot lights.

3. One of each color replacement lens caps for pilot lights.

Project No. 2501151 13 Section 40 67 23

4. One starter coil for each NEMA size furnished.

5. One, 3-pole set of replacement overload heaters of each size range used.

6. One, 3-pole set of starter contacts of each NEMA size used.

B. Spare parts shall be boxed or packaged for long-term indoor non-conditioned storage. Identify each item with manufacturer’s name, description, and part number on the exterior of the package.

2.11 FACTORY TESTING

A. The entire control panel shall be completely assembled, wired, and adjusted at the factory and shall be given the manufacturer’s routine shop tests and any other additional operational test to insure the workability and reliable operation of the equipment.

B. Factory test equipment and test methods shall conform with the latest applicable requirements of ANSI, IEEE, UL, and NEMA standards.

C. The operational test shall include the proper connection of supply and control voltage and, as far as practical, a mockup of simulated control signals and control devices shall be fed into the boards to check for proper operation.

D. Factory test equipment and test methods shall be subject to the latest applicable requirements of ANSI, IEEE, UL, and NEMA standards, and to the City’s approval.

PART 3 - EXECUTION

3.1 FIELD QUALITY CONTROL

A. Inspect installed equipment for anchoring, alignment, grounding, and physical damage.

B. Check tightness of all accessible electrical connections. Minimum acceptable values are specified in manufacturer's instructions.

C. Provide two sets of as-commissioned panel drawings laminated, in each panel pocket.

3.2 FIELD ADJUSTING

A. Adjust all circuit breakers, switches, access doors, operating handles for free mechanical and electrical operation as described in manufacturer's instructions.

3.3 FIELD TESTING

A. Perform all electrical field tests recommended by the manufacturer. Disconnect all connections to solid-state equipment prior to testing.

B. Test all control logic before energizing the motor or equipment.

Project No. 2501151 1 Section 40 73 13 Mallard Creek NPW Filter Pilot Pressure Gauges

SECTION 40 73 13 – PRESSURE GAUGES

PART 1 - GENERAL

1.1 SUMMARY

A. This Section Includes:

1. Pressure Gauges

1.2 REFERENCES

A. ASME International:

1. B40.100 – Pressure Gauges and Gauge Attachments.

1.3 SUBMITTALS

A. See Invitation to Bid for project-specific requirements.

1.4 WARRANTY

A. See Invitation to Bid.

PART 2 - PRODUCTS

2.1 PRESSURE GAUGES

A. Manufacturers:

1. Ametek

2. Ashcroft

3. Omega

4. Winters

B. Dials:

1. Nominal Diameter: 6 in.

2. Face: White, laminated plastic dials with black graduations.

3. Scale: Extend over arc not less than 270°

4. Ranges and Graduation Units: As specified in pressure gauge schedule.

C. Cases:

1. Liquid Filled

2. Material: Aluminum

3. Type: Blowout protected

4. Provide removable rear plate.

5. Windows:

a. Material: Clear, shatterproof glass

b. Thickness: 1/8 in.

c. Provide gasket.

D. Connection:

1. Location: Bottom

2. Socket:

a. 1/4 in. or 1/2 in. NPT male thread

b. Material: Brass forging

c. Extend minimum 1 1/4 in. below gauge cases

d. Provide wrench flats.

Project No. 2501151 2 Section 40 73 13 Mallard Creek NPW Filter Pilot Pressure Gauges

E. Measuring Element:

1. Bourdon Tubes:

a. Material: Phosphorous bronze to brass socket.

b. Provided welded, stress-relieved joints.

2. Movement:

a. Rotary geared

b. Material: Stainless steel

3. Accuracy:

a. As specified in ASME B40.100.

b. Plus and minus 0.5% of full-scale range

F. Adjustment:

1. Provide for zero-reading adjustment.

2. Adjusting Screws: Accessible from rear of case without need for disassembly.

G. Accessories:

1. Pressure Snubber:

a. Material: Type 316 stainless steel

b. Provide isolation valve.

2. Shutoff Cocks: Furnished by gauge manufacturer.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Make sure that gauges are located to be easily read during operation and easily accessible for maintenance.

Where a 90° fitting is required, install a tee-fitting with a plug.

3.2 ATTACHMENTS

A. Pressure Gauge Schedule:

Instrument Tag Application Measurement Range

FP101 Filter Inlet Pressure Gauge 0-150 psig

FP201 Filter Discharge Pressure Gauge 0-150 psig

Project No. 2501151 1 Section 40 73 26 Mallard Creek NPW Filter Pilot Differential and Gauge Pressure Transmitters

SECTION 40 73 26 – DIFFERENTIAL AND GAUGE PRESSURE TRANSMITTERS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section Includes:

1. Differential and gauge pressure transmitters as part of the Filter System.

1.2 SUBMITTALS

A. See Invitation to Bid for project-specific requirements.

1.3 WARRANTY

A. See Invitation to Bid.

PART 2 - PRODUCTS

2.1 PRESSURE MEASUREMENT DEVICES

A. Manufacturers:

1. Endress+Hauser PMC71 (gauge) PMD75 (differential)

2. Siemens Sitrans P320

3.…