SECTION 11350 DISC FILTER

This spec was part of the Des Plaines, IL River WRF project tat bid Feb 26, 2015.


SECTION 11350 DISC FILTER

PART 1 GENERAL

1.1 WORK INCLUDED

A. Disc Filters:
1. Disc Filter No. 1: M-5-2-1.
2. Disc Filter No. 2: M-5-2-2.

B. Backwash Pumps:
1. Backwash Pump No. 1: P-5-2-1
2. Backwash Pump No. 2: P-5-2-2

C. Local Control Panels:
1. Disc Filter Local Control Panel 50-LCP-5-17.
2. Disc Filter Local Control Panel 50-LCP-5-18.
3. Disc Filter Main Control Panel 50-LCP-5-19.

D. Major components included with, but not limited to:
1. Center drum.
2. Disc assembly.
3. Support frame with enclosed tank and cover.
4. Backwash cleaning system.
5. Drive mechanism.
6. Automatic cleaning system.
7. Control Panel.
8. Spare parts and accessories.

1.2 SYSTEM DESCRIPTION

A. The disc filter (DF) system shall provide year-round filtration of the secondary treatment effluent.

1.3 DESIGN REQUIREMENTS (Alternate A)

A. Performance Criteria, System:
1. Peak flowrate per unit, MGD: 11.5.
2. Maximum loading rate, gpm/ft2: 5.0
3. Maximum influent TSS, mg/L: 20.
4. Daily average influent TSS, mg/L: 10
5. Average effluent TSS, mg/L: ? 5.

B. Filter Design Data:
1. Filter pore size, µm: 10
2. Filter cloth material: Polyester
3. Number of units: 2

4. Number of filter discs per unit: 30
5. Filter disc diameter, m: 2.6
6. Minimum effective filter surface area per unit, ft2: 1,595
7. Material of construction (disc): 304 SSTL and ABS plastic

C. Filter Drive Unit:
1. Drive motor (1 per unit): 1.5 HP, 460 v, 3 phase
2. Drive motor service factor: 1.3
3. Drive assembly: Drive chain and sprocket

D. Backwash cleaning system
1. Number of backwash nozzles (per disc): 14
2. Backwash pump (1 per unit): 30 hp, 460 v, 3 phase
3. Design backwash pressure, psi: 110
4. Design backwash flowrate, gpm: 288

E. Performance Requirements:
1. The automatic backwash filter system shall be suitable for filtering domestic wastewater following secondary clarification.
2. Each filter shall be designed to operate on a continuous basis and shall be designed to operate while receiving varying flows.

1.4 DESIGN REQUIREMENTS (Alternate B)

A. Performance Criteria, System::
1. Peak flowrate per unit, MGD: 11.5.
2. Maximum loading rate, gpm/ft2: 5.0
3. Maximum influent TSS, mg/L: 20.
4. Daily average influent TSS, mg/L: 10
5. Average effluent TSS, mg/L: ? 5.

B. Filter Design Data:
1. Filter pore size, µm: 10
2. Filter cloth material: Polyester
3. Number of units: 2
4. Number of filter discs per unit: 35
5. Filter disc diameter, m: 2.4
6. Minimum effective filter surface area per unit, ft2: 1,620
7. Material of construction (disc): 304 SSTL and ABS plastic

C. Filter Drive Unit:
1. Drive motor (1 per unit): 3.0 HP, 460 v, 3 phase
2. Drive assembly: Carbon synchronous belt and 304 SS sprocket

D. Backwash cleaning system
1. Number of backwash nozzles (per disc): 12
2. Backwash pump (1 per unit): 30 hp, 460 v, 3 phase
3. Design backwash pressure, psi: 110
4. Design backwash flowrate, gpm: 235
5. Spray bar oscillation motor (1 per unit): 0.25 hp, 460v, 3 phase

E. Performance Requirements:
1. The automatic backwash filter system shall be suitable for filtering domestic wastewater following secondary clarification.
2. Each filter shall be designed to operate on a continuous basis and shall be designed to operate while receiving varying flows.

1.5 SUBMITTALS

A. Shop Drawings: Submit under provisions of Division 1 including the following:
1. Complete assembly and installation drawings.
2. Descriptive information on material and equipment furnished.
3. Electric motor data.

B. Submit operation and maintenance manual under the provisions of Division 1.

C. Submit certificate of proper installation and operator training under the provisions of Division 1.

1.6 DELIVERY, STORAGE AND HANDLING

A. Deliver, store and handle the equipment under the provisions of Division 1.


PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Kruger Inc., Cary, NC.

B. WesTech Engineering Inc., Salt Lake City, UT.

C. Or Equal.

2.2 GENERAL

A. All equipment shall be the end product of one system manufacturer. The manufacturer shall be responsible for the complete system including all items covered herein.

2.3 MATERIALS

A. Furnish metal parts described herein conforming to Section 05500.
1. Anchor bolts, fasteners, nuts, and washers: 316 Stainless Steel.
2. Other stainless steel: 304 Stainless Steel.

B. Filter panels: Polyester filter cloth mounter on ABS plastic frames.

2.4 EQUIPMENT (Alternate A)

A. Center Drum:

1. Consisting of a water tight, one piece, structural welded, AISI 304 stainless steel fabrication.
2. Open at one end to allow the influent to enter, and have openings to the filter discs for water distribution to the filter media.
3. The center drum shall have lubricated bearings, which must be externally accessible for routine lubrication.

B. Disc Assembly:
1. Shall consist of removable discs.
2. Each disc shall consist of disc segments that can be easily mounted or dismounted as required.
3. The segments of one disc will be assembled to the center drum using stainless steel straps and hardware.
4. Filter discs must be constructed of modular segments and each disc segment must include a substantially open area along the length of the radial support to allow the liquid to flow from one section to the other as the discs are rotated.
5. Filter panels (filter media) shall be mounted on the sides of the disk segments.
6. The filter panels shall consist of flat bar frames with PET monofilament filter fabric attached to the frames.
7. Systems with pleated media, corrugated media, pile cloth media, or stainless steel media shall not be acceptable.
8. Each panel shall be equipped with a rubber gasket integral to the media frame to provide a watertight seal between the filter panels and disc segments.
9. The panels will be held in place by an ABS plastic retaining cap.
10. The cap shall be secured to the ABS disc frame with a single bolt.
11. Nominal media pore size shall not exceed 10 microns.
12. The replacement of filter media must be possible from outside the filter tank by unfastening a single bolt to allow for removal of the retaining cap and sliding the panels from the ABS disc segment.

C. Support Frame with Enclosed Tank and Cover:
1. Shall consist of one piece, structural welded, 304 stainless steel.
2. 304 stainless steel base plates for back-wash pump, drive gear box, and center shaft bearing house shall be welded onto the support frame.
3. Tank thickness shall be a minimum of 1/8” thickness.
4. Carbon steel construction shall not be acceptable in order to minimize maintenance efforts associated with corrosion and painting.
5. The upper part of the filter shall be furnished with a cover consisting of GRP (Glass fiber Reinforced Plastic) with ANSI 304 stainless steel hardware.
6. The cover shall be automated to allow it to be opened and closed without the need for manual lifting.
7. The GRP cover must be designed to open from either side of the filter unit in order to allow personnel to access the disc segments and spray nozzles.
8. Two magnetic motor actuators shall open and lift the cover.
9. The actuators must meet IP66 classification for outdoor use and IP69K classification for wash-down duty.
10. The actuators must include mechanical overload protection via integrated slip clutch and shall include a hand crank to allow for manual operation.

11. Manual operation must only be performed while the power supply is disconnected.
12. A bypass chamber shall be supplied integral to the filter unit to allow for diversion of unexpected high inlet water level without contamination of the filtered effluent.
13. The bypass chamber shall be at the inlet side of the filter unit.
14. The bypass connection shall be an ANSI loose flange.
15. Anchor bolts shall be provided by the contractor.

D. Backwash Cleaning System:
1. Consists of a single traversing back-washing system with moving spray headers for reduction of the consumption of backwash water and for efficient cleaning of the filter cloth.
2. All panels shall receive 110 psi pressure backwash spray.
3. Systems with a separate solids removal and backwash discharge systems shall not be acceptable
4. The backwash system shall be comprised of 304 stainless steel backwash spray headers installed between the discs.
5. The spray headers shall fold out for easy accessibility, requiring no disassembly and shall be operated by a cam system.
6. Each header shall have flat pattern spray nozzles for each disc side.
7. The spray nozzles shall consist of ceramic nozzle tips, integral EPDM rubber seal, and nylon nozzle nut allowing quick quarter turn installation and removal.
8. The replacement of spray nozzles must be possible from outside the filter tank.
9. A swivel joint shall allow the manifold to fold out. The spray headers and manifold shall be automated to allow it to fold out.
10. A single magnetic motor actuator shall be used to automate the operation.
11. The actuator will be the same type and model as used for the GRP cover.
12. A stainless steel strainer housing with internal wire weave filtration cartridge shall be installed upstream of the swivel joint in the backwash supply piping.
13. A ball valve and pressure gauge shall be installed in the backwash supply piping downstream of the strainer housing in order to regulate to the desired nozzle pressure.
14. Backwash Pumps:
a. Each filter shall have one externally mounted low-pressure Grundfos Model MTR45-9/4.2 centrifugal pump for the backwash system. General contractor is responsible for pump installation.
b. The backwash pump shall be of the vertical multi-stage design with the motor mounted directly to the top of the pump.
c. The pump suction and discharge fittings shall be 3” ANSI flanges.
d. The motor shall be supplied by Grundfos integral with the pump.
e. The motor shall be standard efficiency rated for 30 HP, 460V, 3 phase, 60 HZ operation and shall be NEMA C face design, Totally Enclosed Fan Cooled (TEFC) with a minimum service factor of 1.15.
15. Filtered water shall be discharged from the pump to the backwash header piping constructed of 304 stainless steel.
16. A stainless steel housing with internal wire weave filtration cartridge shall be installed downstream of the backwash pump in order to protect the spray nozzles from being plugged with small particles.

17. A ball valve and pressure gauge shall be installed in the backwash header piping downstream of the pump in order to regulate to the desired nozzle pressure.
18. Each filter shall be equipped with one (1) submersible pressure transducer for influent water level measurement and one (1) submersible pressure transducer for effluent water level measurement.
19. The backwash cycle shall be activated either by elevated differential pressure (influent water level minus effluent water level) as indicated by the signals from the transducers or by manual operation.
20. The disc filter shall be equipped with a backwash-collecting trough for removing reject water.
21. The trough shall be constructed of 304 stainless steel and the trough length shall be sufficient to capture reject water from all filter discs.
22. The trough shall be elevated to prevent contact of the influent stream.
23. The reject water shall leave the collecting trough by gravity via the backwash outlet connection.
24. Piping from the trough to the outlet connection shall be 304 stainless steel with stainless steel lined flexible elastomeric PVC couplings.
25. The backwash outlet connection shall be a 6 inch ANSI loose flange.
26. Systems with separate solids removal and backwash discharge systems shall not be acceptable.

E. Drive Mechanism:
1. The drive assembly shall consist of a single gearmotor, polyamide drive sprockets, and investment cast stainless steel drive chain.
a. The chain link and barrel material shall be 15-5pH stainless steel.
b. The chain pin material shall be 17-4pH stainless steel material. Link, pin, and barrel hardness shall be 415 BHN.
c. The chain shall have an ultimate strength of 35,000 lb and an ASME working load of 4,500 lbs.
d. Manufacturing method, material type, hardness, strength, and working load requirements are essential to provide durability, abrasion resistance, corrosion resistance, and long life for this application.
e. Alternative chain casting type, materials, hardness, strength, and working load specifications shall not be allowed.
f. Assemblies utilizing belt drives shall not be acceptable due to risk of stretching and failure when driving loads of this magnitude.
2. The drive assembly shall also provide oscillation of the backwash spray headers without the need for a separate drive motor in order to provide for efficient cleaning of the filter media with minimal water usage and minimal energy usage.
3. Systems with stationary spray headers and/or separate drive motors shall not be acceptable for use.
4. The gear motor shall be SEW Eurodrive shaft mounted helical worm gear with integral standard AC induction motor, SEW gear motor model S77DRE90M4.
5. The drive motor shall be provided integral to the disc filter unit and shall be installed at the factory.
6. The gear ratio shall be 189.09.
7. The motor shall be standard efficiency TEFC rated for 1.5 HP, 460V, 3 phase, 60HZ operation.
8. Reducer design end rating shall equal or exceed AGMA requirements.

9. Speed reducers shall be selected for not more than AGMA class I service.

F. Automatic Cleaning System:
1. The system will be designed to connect via hose to a chemical spray header installed within the disc filter unit.
2. The pump will connect via 480V receptacle to the local control panel for the filter unit.
3. The local control panel will allow for operator initiation of the chemical clean process.
4. Once initiated, the control panel will provide automatic operation and control of the cleaning system process.
5. The system will include:
a. Polyethylene Tank and Mag Drive Centrifugal Spray Pump mounted on mobile unit.
b. Manual ball valves, Manometer, Sch 80 PVC piping, and chemical resistant hose.

2.5 EQUIPMENT (Alternate B)

A. Center Drum:
1. Consisting of a water tight, one piece, structural welded, AISI 304 stainless steel fabrication.
2. Open at one end to allow the influent to enter, and have openings to the filter discs for water distribution to the filter media.
3. The center drum shall have lubricated bearings, which must be externally accessible for routine lubrication

B. Disc Assembly:
1. Shall consist of removable discs.
2. Each disc shall consist of individual cassette segments that can be easily installed or removed as required.
3. The individual cassette segments shall be bolted to the center drum using stainless steel hardware.
4. The filter cassettes shall be constructed from SMC compression molded cassette of fiber-reinforced polyester.
5. The filter panels (filter media) shall be permanently attached to the individual filter cassettes.
6. The filter media shall be a precision woven, open mesh, PET, monofilament fabric.
7. The replacement of the filter media must be possible from outside the filter tank by unfastening one bolt and sliding the cassette from disk assembly.

C. Tank and Cover:
1. The free standing TD design is self-contained with 304 stainless steel outer tank shell to contain the filtrate.
2. The TD design is also provided with a SS level tank to assure correct disc submergence and provide a filtered source of water for backwashing.
3. The upper part of the filter shall be furnished with a lockable cover fabricated with glass fiber reinforced plastic (FRP).

4. The cover shall be automated to allow it to be opened and closed without the need for manual lifting.
5. The FRP cover must be designed to open from either side of the filter unit in order to allow personnel to access the disc segments and spray nozzles.
6. Two magnetic motor actuators shall open and lift the cover.
7. The actuators must meet IP66 classification for outdoor use and IP69K classification for wash-down duty.
8. The actuators must include mechanical overload protection via integrated slip clutch and shall include a hand crank to allow for manual operation.
9. Manual operation must only be performed while the power supply is disconnected.

D. Backwash Cleaning System:
1. Each filter shall be equipped with a single traversing back-washing system with moving spray headers driven by a gear motor for efficient cleaning of the filter media.
2. The gear motor shall be a shaft mounted helical worm gear with integral standard AC induction motor. The motor shall be standard efficiency TEFC rated for 0.25 HP, 460v, 1 phase, 60 Hz operation.
3. The backwash system shall be comprised of 304 stainless steel backwash spray headers installed between the discs.
4. The spray headers shall rotate out for easy accessibility, requiring no disassembly and shall be operated by a cam system.
5. Each backwash header shall have flat pattern spray nozzles for each disc side.
6. The spray nozzles shall consist of ceramic nozzle tips, mounting caps for quick removal, nozzle body and seals. The nozzle system shall be Spraying Systems Co., Quick TeeJet, or approved equal.
7. Backwash Pumps: Each disc filter shall have one 30 HP externally mounted low- pressure, vertical multistage, Grundfos MTR 45-8/5 immersible centrifugal pump pre-installed to the filter unit.
8. Filtered water shall be pumped via a 304 stainless steel suction pipe and discharged from the pump to the 304 stainless steel backwash header piping.
9. An Amiad backwash strainer, manual ball valve, and pressure gauge shall be installed in the backwash header piping downstream of the pump.
10. Each disc filter shall be equipped with an adjustable water level sensor for automatic control of the backwash cycle.
11. The level sensor shall be height adjustable and shall include an encapsulated copper conductor with a control wire connecting the probe to the control panel.
12. Each of the disc filters shall have a collection trough for the removal of solids. The backwash trough shall be constructed of 304 SS.
13. The length of the backwash trough shall be equivalent to the length of the center drum and isolated from the influent stream.
14. The collected solids and backwash water shall leave the backwash collection trough via gravity to the backwash outlet connection.
15. The backwash outlet connection shall be a 6 inch loose flange.

E. Drive Mechanism:
1. A drive assembly is incorporated to rotate the center tube/disc assembly during the backwash cycles. The disc filter drive system consists of the following:

a. The drive assembly shall consist of a gear motor and a Gates Polychain Carbon 37 mm synchronous drive belt and a 304 stainless steel sprocket.
b. The gear motor shall be SEW Eurodrive shaft mounted helical worm gear with integral standard AC induction motor.
c. The motor shall be standard efficiency TEFC rated for 3.00 HP, 460v, 3 phase, 60 Hz operation.

F. Automatic Cleaning System:
1. The system will be designed to connect via hose to a chemical spray header installed within the disc filter unit.
2. The pump will connect via 480V receptacle to the local control panel for the filter unit.
3. The local control panel will allow for operator initiation of the chemical clean process.
4. Once initiated, the control panel will provide automatic operation and control of the cleaning system process.
5. The system will include:
a. Polyethylene Tank and Mag Drive Centrifugal Spray Pump mounted on mobile unit.
b. Manual ball valves, Manometer, Sch 80 PVC piping, and chemical resistant hose.

2.6 INSTRUMENTATION AND CONTROL

A. Control Panel and Operation
1. The disc filter operation shall be managed by an automated control system.
2. The automatic control will be focused around a Programmable Logic Controller (Allen Bradley Compact Logix) that will be housed in a main/centralized control panel.
3. Each disc filter unit will have a local Disc Filter Local Control Panel that will have Ethernet Network Connection routed to the disc filter PLC based Disc Filter Main Control Panel.
4. Each Disc Filter Local Control Panel shall be provided in a UL labeled, NEMA 4X 304 Stainless Steel enclosure.
5. Each control panel shall consist of a control panel enclosure, fused main disconnect, control transformer, branch circuit breakers, IEC motor starter/protector, VFD, hand-off-automatic switches, and liquid level sensor relay for initiating backwash.
6. The power feed to the control panel shall be 480VAC 60Hz 3 phase with internal control transformer for control voltage which shall be 120VAC 60 Hz 1 phase.
7. The control panel enclosure shall meet the following criteria, 304 Stainless Steel, seams continuously welded and ground smooth, seamless foam-in-place gasket for watertight dust-tight seal, door opens 180°, quarter turn latches opened or closed using a screw driver, and NEMA Type 4X , UL Listed 4X. Saginaw SCE42EL3612SSLP or approved equal.
8. The main disconnect shall be enclosed in the control panel, with a handle mechanism extending through the door.
a. The main disconnect shall be a fused disconnect rated for 30 Amps 3- Pole.

b. The main disconnect shall be composed of three primary components; 60A fused disconnect, extension shaft, NEMA 4X operating handle.
9. Each filter unit will be supplied with a high level sensor.
a. Each filter shall be equipped with an adjustable water level sensor.
b. The level sensor shall be a height adjustable 316 SS Rod with a diameter of 5/16”, and shall include a PVC encapsulated copper conductor with control wire connected at top of probe and connected to a junction box on the filter unit.
c. The high level sensor will be mounted in such a way as to indicate when the influent water level has entered a high level scenario.
d. When the high level sensor is activated, it will activate a relay inside the control cabinet and a pilot light on the front of the control panel will illuminate.
e. The pilot light will be labeled "Disc filter High Level".
f. The high level relay will have a spare set of normally open dry contacts available for monitoring.
g. The liquid level relay shall be SSAC LLC44A5A with relay base or approved equal.
10. Field wiring terminal blocks for the disc filter control panel will be din rail mountable, individually numbered, rated for 600 Volts 30 Amps.
a. The field wiring terminal blocks shall be Phoenix UTTB4 3044814 or approved equal.
11. Motor wiring terminal blocks for the disc filter control panel will be din rail mountable, individually numbered, rated for 600 Volts 65 Amps.
a. The field wiring terminal blocks shall be Phoenix UT10 3044160 or approved equal.
12. A motor starter located in the disc filter control panel will manage the start/stop of the Backwash Pump motor.
a. The motor starter will be sized appropriately to match the requirements of the Backwash Pump motor.
b. The motor starter will be an IEC starter, rated 40Amps @ 460VAC 3 phase, 30 HP @ 460VAC 3 phase, rotary handle operator, visible trip indication, protection by overload, short circuit, undervoltage and shunt.
c. The motor starter will be equipped with auxiliary contacts for monitoring and control.
d. The IEC motor starter shall be Square D TeSys U or approved equal.
13. A VFD located in the disc filter control panel will manage the start/stop of the Filter Drum motor.
a. The VFD will be sized appropriately to match the requirements of the Filter Drum motor.
b. The VFD will be equipped with an integral keypad display for VFD interface and configuration, use sensorless flux vector technology, use with 3-phase asynchronous motors, monitoring and control inputs and outputs, motor and drive protection.
c. The VFD will provide required input/output filters or harmonic testing.
d. The VFD shall be Square D Altivar 312 or approved equal.
14. The control panel shall be equipped with SCADA signals (dry contacts) for the following: Backwash Pump Auto, Backwash Pump Run, Backwash Pump Fail, Filter Drum Auto, Filter Drum Run, Filter Drum Fail, Disc filter High Level.

a. The listed signals will be wired to terminals located inside the disc filter control panel and shall be wired to Allen-Bradley remote I/O for connection to the Disc Filter Main Control Panel via Ethernet.
b. These Ethernet cable for the panel communications will be routed by the Contractor to the Disc Filter Main Control Panel.
15. The control panel shall have external pilot lights mounted on the door indicating run status of the filter drum, backwash pump, Adjustable Speed Control Unit and Spray Bar.
a. The LED pilot lights will be NEMA 4X, 120VAC, standard (push to test) and 30mm.
b. The pilot lights shall be Square D or approved equal.
16. The control panel shall have external selector switches (Hand-Off-Automatic) for the filter drum, backwash pump, Adjustable Speed Control Unit and Spray Bar.
a. The selector switches will be NEMA 4X, 30mm, non-illuminated, manual return and equipped with contact blocks.
b. The selector switches shall be Square D 9001 SKS43BH2 or approved equal.
17. The control panel shall have external mounted Common Reset Button and VFD Control Keypad.
18. The completed control panel shall be UL labeled per UL508A. The completed control panel will be factory tested and configured.
19. Control system will also allow for continuous back washing in HAND mode.

B. Field Instruments (Alternate A)
1. As stated previously, two submersible pressure transducers will be supplied for each filter unit and installed in each unit at the factory.
a. The analog signals from the transducers will be connected to the PLC and the signals will be used to control the automatic backwash process for the disc filter system.

C. Field Instruments (Alternate B)
1. The disc filter backwash cycle is initiated either manually by a HOA switch or automatically by monitoring the water level in the center drum with a level sensor located in the influent chamber.
2. The level sensor is wired to a liquid level relay located in the disc filter control panel.
3. The liquid level relay is activated when the level sensor comes in contact with water in the influent chamber.

D. Disc Filter Main Control Panel – General
1. The disc filter supplier shall provide a PLC-based control panel to monitor and control the disc filter process.
a. The PLC-based control panel shall include the PLC, operator touch screen display, control relays, push buttons and selector switches, indicating lights, power supplies, incoming power surge protector, analog isolators, signal conditioners, circuit breakers, and terminal strips.
2. Quality Assurance

a. All wiring and piping shall be installed in compliance with the best standard practices and in accordance with the recommendations as set forth by the disc filter supplier.

E. Disc Filter Main Control Panel
1. Control Panel System Cabinet
a. The panel shall be supplied in a NEMA12 enclosure.
b. PLC shall be Allen-Bradley Compact Logix 1769-L33ER.
c. The front panel of the cabinet shall contain all selector switches and push buttons, as detailed within this specification.
d. The PLC based control panel shall also include an operator interface display mounted on the front of the control panel. Operator interface display shall be Allen-Bradley, PanelView Plus 6 1000 color.
e. The internal portion of the cabinet shall contain all rack mounted PLC equipment, power supply, processor and interface cards.
f. Relays, terminal strips and surge suppressors shall also be contained within the cabinet.
g. Terminal strips for all field wiring shall be furnished within the panel.
h. The panels shall be manufactured by Saginaw or an approved equivalent.
i. All digital outputs shall be provided with isolated relay contacts.
2. PLC I/O Modules
a. As required, the programmable controller manufacturer shall offer discrete input/output hardware consisting of the types listed below.
b. For all modules, the performance ratings shall be valid over the entire environmental range.
c. All I/O modules must be of the same manufacturer and family of PLC as the CPU (Processor).
d. Digital Input Modules: Digital Input Modules shall be 120VAC format and shall be Allen Bradley Compact Logix 1769-IA16.
e. Digital Output Modules: Digital Output Modules shall be 120VAC format and shall be Allen Bradley Compact Logix 1769-OA16.
f. Analog Input Modules: Analog Input Modules shall be 4-20mA, 4 or 8 points per module, and shall be Allen Bradley Compact Logix 1769-IF4 or 1769-IF8.
g. Analog Output Modules: Analog Output Modules shall be available in differential or single ended format and available in the following ranges 0-5VDC, 0-10VDC, 0-20mA and 4-20mA. Analog Output Modules shall available in 2, 4 and 8 points per module. Analog Output Modules shall be Allen Bradley Compact Logix 1769-OF2 or 1769-OF8C.


PART 3 EXECUTION

3.1 INSTALLATION

A. In accordance with Drawings, shop drawings and manufacturer's instructions.

3.2 MANUFACTURER'S SERVICES

A. Provide manufacturer's services under provisions of Section 01445.

B. Minimum service requirements:
1. Installation and Certification: As required for proper installation.
2. Start-up and field testing: Three full days on site.
3. Operator training: One full day on site.

C. Service to Repair Defective Work: Provide during one-year warranty period under the provisions of General Conditions.


END OF SECTION