amend2.pdf

SEE SCHEDULE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The reason for this amendment is to revise the bill of materials see attached and extend the offer due date to 10 Nov at 10:00 a.m.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 10

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 03-Nov-2016

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W44W9M-17-T-0018

X 9B. DATED (SEE ITEM 11)

20-Oct-2016

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

03-Nov-2016

CODE

CONTRACTING OFFICE

MCALESTER ARMY AMMUNITION PLANT

1 C TREE ROAD

MCALESTER OK 74501-9002

W44W9M 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W44W9M-17-T-0018

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The required response date/time has changed from 02-Nov-2016 04:00 PM to 10-Nov-2016 10:00 AM.

The following have been added by full text:

REVISED BILL OF MATERIALS

LIST OF COMPRESSOR SYSTEM COMPONENTS (PURCHASED AS ONE UNIT):

1. One each, Gardner Denver 200 HP Electra Saver, 832 CFM at 125 psig, 1800 RPM, direct drive 460/3/60 motor, variable displacement type, water cooled, rotary screw compressor with listed required features or equal. Factory trained technician for start-up, and training on operation/maintenance included.

2. One each, Thermotech model PFC 0646-8FPI closed loop cooling system with listed required features or equal.

3. One each, Gardner Denver Part #: DGH930EF3 non heated desiccant dryer, 930 cfm at 100 psi, max dimensions: Height 109” x Width 59” x Depth 56”, 2414 lbs., 2” NPT in/out connections, 115 volt, single phase, 60 Hertz, pre filter and after filter with 3 valve bypass and energy saving control system “E”, with listed required features or equal.

1. One each, Gardner Denver 200 HP Electra Saver, 832 CFM at 125 psig, 1800 RPM, direct drive 460/3/60 motor, variable displacement type, water cooled, rotary screw compressor with listed required features or equal. Factory trained technician for start-up, and training on operation/maintenance included.

LIST OF REQUIRED FEATURES:

NOTE: The offeror shall specifically indicate whether or not each of the following required features will be met. If any required feature cannot be met, the offeror will include explanatory remarks for customer review.

GENERAL:

Oil flooded rotary screw compressor that is water-cooled with a variable displacement airend and modulating inlet valve. At full load, the compressor capacity is 832 ACFM (m3/min) at a discharge pressure of 125 PSIG (bar).

Capacity is the actual CFM (m3/min) at inlet conditions, delivered at the final discharge of the compressor package.

AIREND:

The high efficiency single-stage, oil flooded rotary screw design is of the rotary helical screw type for minimal internal leakage and maximum compressor efficiency. Rotary helical precision ground rotors, manufactured on the latest CNC grinding machines, use on-line laser measurement technology to be dynamically balanced and mounted.

The rotors are manufactured from Steel EN 10083-C45A and EN-GJL-250 grey cast iron. The package is gear driven and mounted with a D flange for permanent alignment. The package incorporate a variable displacement technology such as the TurnValve® to reduce the package’s energy consumption when at less than full load capacity. Heavy-duty bearings, capable of typical calculated B-10 bearing life in excess of 150,000 hours, are used.

Rotor shafts are an integral part of the rotors and are not match marked. The minimum male rotor diameter is 296

mm. Bearing cooling and lubrication is achieved through differential pressure (airend coolant shall be circulated by air pressure differential, parasitic shaft driven pumps not acceptable). A pressure relief valve is installed in the final discharge line and set at the factory to approximately 120% of unit’s full load operating pressure for protection against overpressure. The compressor package includes a minimum pressure and check valve. This ensures a minimum pressure on the oil reservoir and prevents backflow of air when the unit stops, unloads or is shut down.

The large diameter rotors operate at slow speeds resulting in exceptional efficiency and reliability.

MOTOR:

The standard 200 HP motor is a 460 volt, 3 phase, 60 Hertz open drip proof (ODP) design that operates at 1800 RPM with a 1.15 Service Factor. The motor is an induction type with NEMA B design and class B or F insulation.

The motors used meet NEMA premium efficiency standards per MG1 Table 12-12. Optimized for best efficiency and power factor, the motor is specifically matched to the torque, speed, and horsepower characteristics of the compressor and is suitable for Wye-Delta type starting and continuous duty. The speed, torque and operating characteristics have been designed to match the load of the compressor. A Totally Enclosed Fan Cooled motor is available as an option.

STARTER:

A wye-delta starter is used to reduce the current inrush on starting. It is mounted in a NEMA 12 enclosure on the compressor package and wired with an emergency stop button. The door latch contains locking features. The control panel and components are UL Listed and CSA approved.

DRIVE ASSEMBLY:

The motor used is a NEMA D-flanged design that couples directly to the airend through lifetime non-lubricated, flexible coupling. Permanent alignment ensures maximum coupling and bearing life. The motor and airend are mounted with vibration isolators on a rigid steel base.

INLET AIR FILTER:

The Heavy duty, two-stage, dry-type inlet filter is capable of removing 99.9% of all airborne particulates. A 5 micron and larger filter is to be used. An auto dirt ejector is included with filter for easy service. The filter is in a horizontal orientation to prevent dislodged material from falling into the airend during normal operation and filter servicing.

COMPRESSOR CONTROL SYSTEM:

The exclusive AirSmart microprocessor-based controller is used on the compressor package. Equipped with a low voltage 24 VDC power source, the control system ensures proper starting, capacity control, operating control, and safety control of unit. The controller offers, as standard, the capability of operating as a modulating inlet valve or as a load/no load inlet valve with timed stop. The controller is housed in a NEMA 12 control enclosure. Transducers and thermistors are utilized in the control system because of their reliability and do not require routine maintenance.

Control Panel, Wiring, and Components are UL listed and CSA Certified.

A. Controller The microprocessor controller is designed specifically for use in rotary screw air compressors and is capable of controlling fixed speed air compressors which use traditional motor starters. The microprocessor-based unit monitors all necessary temperature and pressure points within the compressor in order to safely operate the machine and satisfy user air demand. The Control Panel displays a comprehensive overview of the compressor status and allows easy access to operational parameters such as pressure set points, alarm set points and language selection.

4 line by 20 character LCD display 4 status LEDs for “at-a-glance” compressor status Password protection of setup parameter menus Multiple language support UL Recognized component in the United States and Canada.

24 volt DC power input Optional communications module for sequencing and enhanced features.

The microprocessor controller that is used features an error management system that provides information on advisory warnings, shutdowns and displays general operating parameters. The controller constantly monitors system status and operation in order to determine the state of the compressor system.

B. Operation The controller allows the system to run in either constant run, low demand, sequence, or automatic start/timed stop modes to best match system demand. A backup system will not be required for the control system. Manual or automatic restart modes are employed following a power failure. The controller is capable of sequencing up to 8 units with interconnecting RS485 cable (sequencing kit), thus allowing for future system expansion. Contacts are available for remote controlled operation. No timing devices shall be used to prevent machine from unloading once the cut out point of the pressure switch has been reached.

C. Advisories The advisory notifications in the controller are designed to alert the user of needed service or that certain parameters may be approaching their shutdown level. Advisory notifications can be reset while the compressor is running or stopped by pressing the upper right button corresponding to the logo on the home screen. If the error condition still exists after resetting the advisory, the advisory notification will occur again. The status of the compressor at the time of each advisory is stored in non-volatile memory, which can be accessed through the history menu.

Complete System Advisory indicating: Change Separator, change air filter, change oil filter, change oil, low ambient temperature, high discharge temperature

Start-up service is coordinated by factory trained technicians to ensure equipment is running properly and adjusted to factory specifications. Maintenance instructions will be discussed with the end user to ensure they understand routine maintenance procedures. The maintenance training shall be conducted at the time of equipment start-up.

ADDITIONAL REQUIRMENTS:

DETAILED DESCRIPTION REQUIRED PRIOR TO AWARD: The MCAAP Engineering Support Division will validate and verify/approve the contractor’s listed equipment concept before award is granted. In order to meet this review requirement, the offeror shall submit with their proposal a detailed technical description of each item.

The offeror’s description submittal shall account for each one of the required product features located in this qualifying statement. The description shall also clearly portray/describe how each item will function.

CONCEPTUAL DRAWING REQUIRED PRIOR TO AWARD: Conceptual drawings that are not detail “as built” drawings are required for submittal with the detailed description. Drawing must provide overall height, width, and length dimensions. Drawing must show dimensioned locations of inlets and outlets for piping. Drawing must clearly label and display all major components and anchor holes/locations.

OPERATION & MAINTENANCE MANUALS DUE DELIVERY: The Contractor shall submit two (2) O&M manuals at the same time that the components are delivered. The Government shall review and approve these O&M manuals.

SPARE PARTS LIST: The contractor shall submit a spare parts list at the same time that the components are delivered. It is requested, not required, that the list cover high wear, low life expectancy items, and provide information to help the customer forecast lead times and costs for procuring replacement parts for the listed components.

3D MODELS: If the contractor builds a 3D model or models as part of its design and production processes, the Government requests to take possession of the models when the components are delivered. Note: Offeror submittal of 3D models is not a contractual requirement.

2. One each, Thermotech model PFC 0646-8FPI closed loop cooling system with listed required features or equal.

LIST OF REQUIRED FEATURES:

NOTE: The offeror shall specifically indicate whether or not each of the following required features will be met. If any required feature cannot be met, the offeror will include explanatory remarks for customer review.

FAN-COIL UNIT: Model PFC-0646-8FPI closed circuit cooler. Each unit shall have the capacity to cool 63 gpm of 40 % glycol from 125°F to 105°F with a 100°F dry bulb temperature without a trim cooler.

TRIM COOLER INCLUDED: Trim cooler designed to cool flow from 105°F down to 90°F using 70°F water.

Water requirements are ½ of the rated fluid flow (31.5 gpm). Water regulating valve and temperature gauge must be included with the trim cooler. All gauges with wells (2 each) and balance valves (2 each) are to be supplied for use on the heat load discharge lines.

FAN MOTORS: Six, 1 ½ HP individually fused fan motors shall be furnished suitable for outdoor service on 460 volts, 60 Hz and 3 phase. Fan motor shall be heavy duty PSC or 3 phase motors with permanently lubricated ball bearings. Motors shall be thermally protected against burn-out, and may be started by single contactor. Protective slingers shall shield the motor from weather damage. Motors shall be factory wired with leads terminating in a weatherproof junction box located on the outside of the unit casing.

COIL: Shall be constructed of plate type die formed, aluminum fins mechanically bonded to copper tubes. Fins shall employ full height, self-spacing collars which completely cover tube surface. Coil shall be pressure & leak tested at 325 psig air under warm water, evacuated, dehydrated, and sealed with caps on connections.

MANIFOLD KIT: Provide single coolant inlet and outlet manifold kit for field installation.

FANS: Propeller fans, carefully matched to the coil, shall cover a large percentage of the coil face area providing uniform air distribution. The direct drive fans shall have heavy gauge aluminum blades securely riveted to zinc plated, chromate treated steel center hubs. All fans, statically & dynamically balanced before shipment, shall operate at low tip speeds for minimum vibration and low sound levels.

UNIT CABINET: Casings shall be constructed of heavy (16) gauge corrosion resistant galvanized steel thoroughly reinforced with riveted gussets. Fan outlets shall provide additional strength to fan panel and assure even air flow for quiet operation. All multiple fan unit casings shall be divided by full width baffles to separate individual fan sections and provide additional casing reinforcement. Mounting legs shall be constructed of heavy (10) gauge steel and shall be shipped with the unit for field installation.

FAN GUARDS: Shall be constructed of heavy (11) gauge, close meshed steel wire, polyvinyl chloride (PVC) coated for corrosion resistance.

CONTROLS: Fan cycling control package with multiple starting contactors and thermostats shall be provided on all multi-fan units in UL listed weather resistant control panel.

PUMP/CONTROL STATION: The Model 5D-2 duplex pump/control station shall be a completely assembled unit consisting of a base, circulating pumps, pump motors, piping, surge tank, instruments, and control panel.

PUMPS: The circulating pumps shall be centrifugal type with mechanical seals. Pumps shall be all iron construction, back pull-out design, with enclosed impeller. Pumps shall be sized for 63 gpm of 40 % Glycol at a total dynamic head of 125 feet. Goulds Model 3656, “S”- 1 ½ x 2-6

PUMP MOTORS: Shall be 5 HP, 3500 RPM, NEMA Standard, with TEFC enclosure suitable for 460 volts, 60 hertz, and 3 phase. Motors shall be thermally protected against burn-out, and shall be factory wired with leads terminating in a NEMA 4 junction box.

DUPLEX OPTION: Must include a second pump, pump on-off switches and run lights, lead failure light and lead-lag selector switch. The system shall be designed to automatically start the lag pump, should lead pump fail, by closing the flow switch contacts & energizing the timer. The timer runs out (10 sec), activating the relay, switching power to lag pump.

INSTRUMENTS: Supply three 3-1/2" bottom connected compound pressure gauges with needle valves to measure pump suction and discharge pressures. Supply two 3" back mounted temperature gauges with thermowells to measure coolant temperatures to and from the fan/coil unit. A paddle type flow switch shall be installed in the suction piping to detect fluid flow.

PIPING: 2" and smaller shall be sch. 40 ductile iron with threaded connections. Piping 3" and larger shall be sch.

40 carbon steel, welded with flanged connections. Piping shall be designed to facilitate pump removal. Single suction and discharge connections shall terminate at the edge of the skid. Control valves shall be installed in the pump suction and discharge lines to control flow and allow pump removal without draining the system. A discharge check valve shall be located in the pump discharge line to prevent reverse flow.

SURGE TANK: An ASME code constructed 25 gallon surge tank shall be provided with the pumping package.

The tank shall be fitted with an air purge line, ASME safety relief valve, isolation valve, and fluid level sight glass with check valves (in case of glass breakage, fluid will not leak). The tank shall fulfill multiple functions, such as fluid expansion, air purging, system drain and system pressure relief.

CONTROL PANEL: Shall be NEMA 4 enclosure with across-the-line, full voltage magnetic starter(s), fused 110v control transformer, time delay relay, hand-off-auto (H-O-A) selector switch, system reset button, power "on", and no flow "shutdown" lights shall be included. The H-O-A switch shall function as an on (hand)-off switch, and in the "auto" position, can be wired to start with a signal from the heat load.

BASE: Shall consist of a welded steel frame with supports for maximum rigidity and strength. Four 3/4" dia. anchor bolt holes shall be provided to facilitate installation.

ADDITIONAL REQUIRMENTS:

DETAILED DESCRIPTION REQUIRED PRIOR TO AWARD: The MCAAP Engineering Support Division will validate and verify/approve the contractor’s listed equipment concept before award is granted. In order to meet this review requirement, the offeror shall submit with their proposal a detailed technical description of each item.

The offeror’s description submittal shall account for each one of the required product features located in this qualifying statement. The description shall also clearly portray/describe how each item will function.

CONCEPTUAL DRAWING REQUIRED PRIOR TO AWARD: Conceptual drawings that are not detail “as built” drawings are required for submittal with the detailed description. Drawing must provide overall height, width, and length dimensions. Drawing must show dimensioned locations of inlets and outlets for piping. Drawing must clearly label and display all major components and anchor holes/locations.

OPERATION & MAINTENANCE MANUALS DUE DELIVERY: The Contractor shall submit two (2) O&M manuals at the same time that the components are delivered. The Government shall review and approve these O&M manuals.

SPARE PARTS LIST: The contractor shall submit a spare parts list at the same time that the components are delivered. It is requested, not required, that the list cover high wear, low life expectancy items, and provide information to help the customer forecast lead times and costs for procuring replacement parts for the listed components.

3D MODELS: If the contractor builds a 3D model or models as part of its design and production processes, the Government requests to take possession of the models when the components are delivered. Note: Offeror submittal of 3D models is not a contractual requirement.

3. One each, Gardner Denver Part #: DGH930EF3 non heated desiccant dryer, 930 cfm at 100 psi, max dimensions: Height 109” x Width 59” x Depth 56”, 2414 lbs., 2” NPT in/out connections, 115 volt, single phase, 60 Hertz, pre filter and after filter with 3 valve bypass and energy saving control system “E”, with listed required features or equal.

LIST OF REQUIRED FEATURES:

NOTE: The offeror shall specifically indicate whether or not each of the following required features will be met. If any required feature cannot be met, the offeror will include explanatory remarks for customer review.

GENERAL

Vendor shall supply one packaged, fully assembled, piped, and wired pressure-swing (heatless) type regenerative desiccant dryer. Dryer shall be complete with: two pressure vessels (towers) each containing a desiccant bed fully charged with activated alumina; controller and control valves to direct inlet and purge air flows from tower to tower;

and a means of regulating purge air usage. All components shall be mounted within a boxed structural steel frame to shield valves, piping, pre-filtration, and after-filtration from accidental impact. Dryer shall be ready for start up after utility connections are made. Package shall be produced by an ISO 9001 registered manufacturer and, carry agency approvals for CSA, and CE.

Dryer design shall incorporate upward gas flow transmission during the compressed air stream dehydration cycle for maximum efficiency and desiccant bed protection and, operate automatically and continuously in producing the required ISO 8573.1 Quality Class levels for Solids, Moisture, and Oil as specified for the site conditions documented herein under the “System Specifications” sub-header. Purge air shall flow downward.

Industry Standard product design typically dictates an ISO Air Quality Class “2” Pressure Dew Point of -40F (-40C) at 100 PSIG (7 bar) with site conditions of 100F (37.8C) ambient and, 100F (37.8C) inlet air temperature at pressure. Integral package filtration shall be included to afford the Desiccant bed protection from particulate and oleophilic contamination and shall be provided prior to the compressed air ingress portal. At a minimum, ISO Class 2 Filtration shall take the forms of a Particulate (1 micron) Pre-filter and a Coalescing (.008 ppm) Filter. Plant piping shall be protected from desiccant particulate migration by a (1 micron) Desiccant After-filter to be located within the discharge conduit after the dry compressed air egress portal. An RS232 communications port shall be included to allow for remote monitoring capabilities in real-time directly from the manufacturer.

DESICCANT DRYER DESIGN

Dryer shall include two (2) drying towers (pressure vessels) containing the desiccant beds. Towers shall be designed so that compressed air velocity does not exceed 60 feet (18.3 meters) per minute @ 100 psig, (6.9 bar) through the desiccant bed to ensure bed stability and prevent premature desiccant deterioration. This velocity shall provide each tower with a minimum contact (residence) drying time of 4.8 seconds per measured unit of gas flow to ensure the specified dew point can be delivered and maintained with saturated inlet conditions.

Desiccant bed designs shall achieve maximum adsorption and release rates by incorporating 3mm ball size activated alumina. It shall include tower desiccant surpluses of 30% to neutralize and account for the normal losses to bed efficiency attributed to desiccant aging prior to reaching operational stability. Achieving this shall require that each tower contain a minimum of 0.6 pound (0.27 kg) of activated alumina desiccant for each scfm of rated flow while operating at industry standard conditions. Specified design conditions shall ensure desiccant bed regeneration efficiencies of no less than 98% by reclaiming the heat of adsorption. Resultant specified dew point stabilities will then be achieved under full rated flow conditions. The average purge rate shall not exceed 13.7% at rated flow conditions.

Purge air shall be regulated by an adjustable valve and pressure-reducing orifice. Purge rate shall be indicated by a purge flow indicator. Purge air shall be exhausted through oversized mufflers to minimize backpressure and reduce the noise level as it expands back to atmosphere. Each tower shall have its own muffler. An extra set of muffler inserts shall be included for replacement when excessive backpressure through the muffler (such as might occur on initial start-up after dryer transport) is experienced. Mufflers shall be equipped with a pressure relief device to prevent excessive backpressure.

After the purge process is completed and prior to tower switchover, the tower being purged shall slowly be repressurized to line pressure to prevent bed movement and desiccant abrasion. Minimum acceptable repressurization cycle times per ISO 8573.1.

DESICCANT TOWER CONSTRUCTION

Each tower shall be furnished with separate drain and fill ports so that the desiccant can be replaced without disconnecting the piping. Cleanable stainless steel air diffusers shall be removable and internally affixed on larger flow rates. This shall apply to both the upper and lower ports on each tower. Diffusers shall prevent desiccant channeling, reduce dusting and bed attrition caused by bed fluidization, and ensure maximum drying capacity can be extracted from the desiccant. A pressure relief valve and pressure gauge shall be provided for each tower. Pressure relief valves shall be mounted after the flow diffusers to prevent desiccant migration or operational interference with safety function. Pressures vessel diameters in excess of six-inches shall require ASME certification to assure code compliance. Said vessels shall be built and stamped in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1.

PIPING

All piping circuits, shall be threaded, grooved or flanged and properly sealed to prevent leakage.

CONTROLLER

A 100% repeatable solid state controller shall be furnished to sequence operation of inlet and purge/repressurization valves so that one tower is drying the inlet compressed air stream while the other tower is depressurized, regenerated, and repressurized. Controller shall be panel mounted in a NEMA 4, 4X rated control box affixed to the front of the package. Said controller shall come complete with user replaceable internal fuse protection. Controller design shall accept a customer supplied open/closed electrical contact signal to initiate a Controlled Dryer Shut- Down sequence to maximize efficiencies by synchronizing dryer to an air compressor’s “unloaded” or, “off” operational status. Controller cycle time shall be field adjustable via an externally mounted panel dial to afford the flexibility of selection from four outlet pressure dew point (pdp) quality class levels per ISO 8573.1 as follows:

Quality Class

ISO 8573.1

Pressure Dew Point Degrees F/C

Cycle Time Minutes

1 -100/-73 4 2 -40/-40 10 3 -4/-20 16 4 +38/+3 24

Economies of operation shall be further achieved with an external panel mount dial to manually vary the regeneration time cycle and ensure accurate settings. Said dial shall allow the user to save up to seventy percent (70%) of purge air energy by reducing purge air consumption in relation to actual load levels. Savings shall be expressed as an inverse percentage of maximum design flow capacity. Controller shall provide a method to allow manual sequencing through the modes of operation to verify proper operation of control valves.

INSTRUMENTATION

Standard Controller shall include the following:

NEMA 4X (IP66) control panel construction Soft on/off switch with two power recovery modes Tower status LED’s (green=drying, yellow-regenerating) Process valve status LED’s (on=valve open, off=valve closed) Operating mode LED’s (ISO Class fixed cycle) Load Factored Purge Savings LED’s (user selectable from 0 to 70%) Alarm LED (red) Voltage-free alarm contacts, 5A rating Alarm reset button/Manual cycle advance Service Reminder LED’s (Filters & Drains (3), Inlet, Purge & Tower Switching (6), and Desiccant Towers

(4) RS232 Communications Capabilities Moisture Indicator (indicates elevated outlet dew point) Tower pressure gauges (indicate pressure in tower) Purge rate indicator (indicates pressure of purge air upstream of pressure reducing orifice) Switching failure alarm (monitors system and indicates if tower fails to pressurize or depressurize after switchover)

ENERGY SAVING CONTROLLER

Shall include an automatic Energy Saving Purge Control System. Said system shall utilize feedback from temperature thermistors to calculate the actual load on the desiccant bed to determine the precise purge time required for efficient tower regeneration. Once regenerated, said off-line tower shall become a repressurized sentinel in preparation for its future drying cycle. Purge air losses shall then be eliminated until the on-line drying tower has achieved optimal desiccant bed saturation levels. Only then, shall the tower switchover sequence be initiated and the process begins anew. Systems that use flow meters or hygrometers instead are not deemed acceptable.

Optional Energy Savings Controller shall carry the following added benefits:

Automatic, load-matched, purge air Energy Savings Vacuum Fluorescent Text Display (complete text communications) Demand Sensitive Thermistors (two per tower to establish purge requirements) High Humidity or Dew Point Alarm Filter Monitor Alarm (1 or 2 filters with optional Filter Monitor) Electric Drain Alarms (1 or 2 filters with optional Demand Drains) Electric Drain Test (1 or 2 filters with optional Demand Drains)

VALVES

System shall be rated for 150 psig (10.5 kgf/cm2) maximum working pressure (250 psig/17.6 kgf/cm2 optional) and supplied with air operated, butterfly type valves. Said butterfly type valves shall use dual piston, rack and pinion type actuators that are isolated from the compressed air stream, for the purge function and, dual check valves and purge check valves for the tower inlet air function. Butterfly type air control valves shall possess a manual override mechanism and a visible indicator to show valve position. Non-lubricated solenoid operated valves with hermetically sealed coils shall be used to engage the compressed air power necessary for pneumatic control valve actuation. Said valve engagement air shall be dried and filtered to one micron prior to being deployed to both open and close these control valves.

Valves shall not require field lubrication and, shall be constructed with resilient elastomeric seats to minimize wear and assure seal-tight closures. Purge/repressurization valves shall include a spring assist to hold valves closed prior to start-up and upon loss of air pressure. Valves shall be rebuildable in the field.

STANDARDS CONFORMITY

Dryers shall be certified by the Certification and Testing Division of the Canadian Standards Association to comply with the standards as documented by UL No. 1995 and CAN/CSA-22.2 No. 236-M90.

SYSTEM SPECIFICATIONS

Rated Capacity in SCFM 930 System Design Working Pressure in 100 PSIG Maximum Working Pressure in PSIG (bar) 150 Maximum Inlet Air Temperature in °F (°C) 120 (saturated) Maximum Ambient Air Temperature in °F (°C) 120 Electrical Requirements: 115 Voltage, 1 Phase, 60 Hertz NEMA (IP) Rating: 4 (Specify: Standard - NEMA 4, 4X, Optional NEMA 7) Dew Point Quality Class:

(1= -100°F/-73°C; 2= -40°F/-40°C; 3= -4°F/-20°C; 4= +38°F/+3°C) Integral Pre-Filtration Quality Class: 1

Specified Heatless Desiccant Air Dryer shall be Gardner Denver Model #DGH1130EF3 or approved equal.

ADDITIONAL REQUIRMENTS:

DETAILED DESCRIPTION REQUIRED PRIOR TO AWARD: The MCAAP Engineering Support Division will validate and verify/approve the contractor’s listed equipment concept before award is granted. In order to meet this review requirement, the offeror shall submit with their proposal a detailed technical description of each item.

The offeror’s description submittal shall account for each one of the required product features located in this qualifying statement. The description shall also clearly portray/describe how each item will function.

CONCEPTUAL DRAWING REQUIRED PRIOR TO AWARD: Conceptual drawings that are not detail “as built” drawings are required for submittal with the detailed description. Drawing must provide overall height, width, and length dimensions. Drawing must show dimensioned locations of inlets and outlets for piping. Drawing must clearly label and display all major components and anchor holes/locations.

OPERATION & MAINTENANCE MANUALS DUE DELIVERY: The Contractor shall submit two (2) O&M manuals at the same time that the components are delivered. The Government shall review and approve these O&M manuals.

SPARE PARTS LIST: The contractor shall submit a spare parts list at the same time that the components are delivered. It is requested, not required, that the list cover high wear, low life expectancy items, and provide information to help the customer forecast lead times and costs for procuring replacement parts for the listed components.

3D MODELS: If the contractor builds a 3D model or models as part of its design and production processes, the Government requests to take possession of the models when the components are delivered. Note: Offeror submittal of 3D models is not a contractual requirement.

The following have been deleted:

BILL OF MATERIALS

(End of Summary of Changes)