Technical Performance Specifications.docx

TECHNICAL/PERFORMANCE SPECIFICATIONS

ITEM # 1 – NON-RECESSED FLOOR SCALES: Furnish and install a total of 3 non-recessed floor scales as indicated below:

ITEM # 1A WEST PALM BEACH, FLORIDA

Furnish and install two (2) each non-recessed floor scales. One (1) non-recessed scale shall be installed on the soiled side of the laundry and one (1) non-recessed scale shall be installed on the clean side of the laundry with a minimum weight capacity of 3000 pounds.

1. The scales shall calculate pounds to pieces and include a stand-up work-station desk with chair at each location. Work station shall be provided at each scale location lockable doors, digital display and color printer. The work station shall be identified with 2-inch letters.

2. Scales must be capable of displaying and printing to the half (1/2) pound measurements. Color printer(s) shall print date, time of day, gross weight, tare weight, net weight.

3. Scale system shall include Centralized Data Collection system that shall be located in the Textile Supervisors office. A color printer shall also be provided to print reports. System shall be compatible and connected with the Energy Management System and the Industrial Laundry Plant Management System

4. Provide 4-Plex GFI receptacle for each scale location for employee and mechanics use.

5. Scales shall be equipped with lockout/tag-out for servicing and maintenance of equipment. Tags and locks shall be provided by the contractor I a wall mounted lock-out and tag-out kit/display. All lockout/tag-out locations shall be marked and identified on the machine with instructions on lock-out procedures for the equipment offered. Lockout/Tag-out procedures include all electrical, air, water, hydraulic etc. Relief valves shall be installed for lockout/tag-out procedures. Procedures shall be permanently mounted on each machine for the mechanics use.

ITEM # 1B MIAMI VA HEALTHCARE SYSTEM, FLORIDA

Furnish and install one (1) each non-recessed floor scale. The scale shall be a minimum weight capacity of 3000 pounds.

1. The scale shall calculate pounds to pieces and include a stand-up work-station desk with chair at the location. Work station shall be provided at scale location with lockable doors, digital display and color printer. The work station shall be identified with 2-inch letters.

2. Scales must be capable of displaying and printing to the half (1/2) pound measurements. Color printer(s) shall print date, time of day, gross weight, tare weight, net weight.

3. System shall be compatible and connected with the Industrial Laundry Plant Management System

4. Scales shall be equipped with lockout/tag-out for servicing and maintenance of equipment. Tags and locks shall be provided by the contractor I a wall mounted lock-out and tag-out kit/display. All lockout/tag-out locations shall be marked and identified on the machine with instructions on lock-out procedures for the equipment offered. Lockout/Tag-out procedures include all electrical, air, water, hydraulic etc. Relief valves shall be installed for lockout/tag-out procedures. Procedures shall be permanently mounted on each machine for the mechanics use.

Ship to:

Miami VA Healthcare System 1201 N.W. 16th St.

Miami, FL 33125

ITEM # 2 – AUTOMATED SOILED STORAGE/SORTING SYSTEM:

Furnish and install new, one (1) automated Soiled Storage/Sorting System.

Soiled Storage and Automated Sorting System

Furnish and install one (1) system. The complete soil storage and sorting conveyor system shall be of such material, and so designed, to withstand daily clean up and disinfecting of all soiled textile contact surfaces without damaging the system or its components. External Equipment/Motor Protection Filters are to be provided for all air intakes to include but not limited to electronic boxes, mechanical equipment, etc., Where ever air intakes are located. These are used as a primary pre-filtration defense to help prevent damage and extensive maintenance that large volumes of lint/debris can cause. They are to fit all air intakes, motors etc. and be made of three-dimensional electrostatic media and encased in a 1/8"-3/8" rigid magnetic galvanized steel frame and contain 2 layers of polypropylene media. The media will not shed fibers, absorb moisture or promote bacterial growth; the filter should be designed for UV protected, and stands up to extreme outdoor or indoor exposure, corrosive chemicals, high velocity air flow, as well as industrial cleaning and maintenance handling.

Furnish and install new 480-volt power disconnect box for the new Automated Soil Storage and Sorting System. Install a red warning indicator and a lock-on device on the handle of the branch circuit breaker for the power supply circuit for the dryer to within six (6) feet of the floor. Disconnects shall be installed in accordance with NEC 110.26 (A) (1) (2)

The system shall consist of the following:

Soiled Storage and Automated Sorting System

Furnish and install 1 (system). The complete soil storage and sorting conveyor system shall be of such material and construction, and so designed, to withstand daily clean up and disinfecting of all soiled textile contact surfaces without damaging the system or its components.

The system shall consist of the following:

Cart Dumper System: Provide new one (1) each end or side loading type cart dumper system designed to pick-up loaded textile carts (utilized by the medical center) and dump textiles onto a soil storage conveyor.

1. Cart dumper shall be provided with safety chains, guard rails and an illuminated (when activated) emergency stop button (colored RED) for all electrical. Emergency stop buttons shall have a yellow background with legend.

2. Furnish and install one (1) new 480-volt power disconnect box for the cart dumper. Install a red warning indicator and a lock-on device on the handle of the branch circuit breaker for the power supply circuit for dryer to within six (6) feet of the floor. Electrical Requirements - 480 volts, 3 phase, 60 hertz. Electrical installation shall include ¾ inch EMT conduit with compression fittings. Disconnects shall be installed in accordance with NEC 110.26 (A) (1) (2)

3. Cart dumper shall have a hour meter installed to show actual hours of run time of the cart dumper.

4. Cart dumper shall be equipped with lockout/tag-out for servicing and maintenance of equipment. Tags and locks shall be provided by the contractor I a wall mounted lock-out and tag-out kit/display. All lockout/tag-out locations shall be marked and identified on the machine with instructions on lock-out procedures for the equipment offered. Lockout/Tag-out procedures include all electrical, air, water, hydraulic etc. Relief valves shall be installed for lockout/tag-out procedures. Procedures shall be permanently mounted on each machine for the mechanics use.

5. The cart dumper shall have operating instructions engraved on laminated plastic plates. All labeling shall be on laminated plastic nameplates. Nameplates shall be laminated phenolic with a colored surface and white core with magnetic backing.

Soil Storage Conveyor(s): Furnish and install soiled storage conveyor(s). Conveyors shall have cameras installed to allow operators to view soiled conveyors form the soiled sorting platform. The size of this conveyor system will be based on 40 percent of the daily wash system production which is approximately 15,386 pounds per day. Soiled storage conveyor(s) shall have the capabilities of using a cart dumping system and existing auto Transvac linen chute. The storage conveyors shall move loads in increments.

a. The storage conveyor(s) shall be designed to prevent any spillage. Storage conveyor(s) shall be designed to allow linen to advance without rolling or getting jammed. Storage conveyor(s) shall be equipped with an illuminated (when activated) emergency stop cord/button (colored RED) with legends located within 25 feet of work station. Emergency stop buttons shall have a yellow background with legend.

b. All conveyors will operate automatically and advance in increments without manual attention. Calculations for flat-belts for textile storage will be based on 7 pounds per cubic foot. The system shall be designed to allow employees to manually jog (forward and reverse) textiles from the storage conveyors which will automatically convey textiles to the transfer conveyor(s).

Transfer Conveyor: Furnish and install new soiled transfer conveyor(s) that shall connect the soiled storage and soil sorting conveyors and have appropriate side guards to prevent spillage and allow for proper transfer of textiles to the sorting conveyor. Any angle necessary for the transfer conveyor shall be such to ensure positive transfer of pieces without work flow disruption.

a. The transfer conveyor(s) shall be designed to prevent pieces of textiles, i.e., wash cloths, towels, sheets, blankets, uniforms, mops, etc., from rolling/jamming between the transferring to the conveyor(s) and the transfer to the soil sorting conveyor. Transfer conveyor(s) shall not be utilized to calculate storage. A break-up station shall be incorporated within the design of the soiled system to allow an employee to empty laundry bags for soil sorting.

b. The system shall be designed for the employee to manually jog (forward and reverse) in the event of a jam.

Automated Sorting System with Sort Stations: Furnish new, one (1) Automated Sorting System with ten (10) Sort Stations. The sorting system/stations must maintain account segregation and to purge under loaded batches automatically at the end of each account.

Employees will break-up linen bags on to the soiled sorting conveyor that are received from the transfer conveyor(s). A section at the end of the soiled sorting conveyor system shall be designed to allow two (2) employees access to empty soiled bags on to the soiled sorting conveyor. The work station shall be provided with an illuminated (when activated) emergency stop button (colored RED). Emergency stop buttons shall have a yellow background with legend.

All Sorting Stations must comply with the following:

a. All parts of the sorting stations that come into contact with linen MUST be produced from manufacturers standard products (i.e. steel and belts) and be able to be cleaned with a heavy-duty disinfectant.

b. The volume of the Sorting Stations must be sized to hold one batch of the bulkiest category.

c. The Sorting Stations must weigh to an accuracy of +/-2%.

d. Each Sorting Station must include a Color Display that will be capable of displaying the following information;

i. Article description and photograph.

ii. Account information.

iii. Linen item weight.

e. Overload protection must be included to prevent an overloaded batch of linen going into the Soil Storage System.

f. The sorting system shall include a sufficient work area that reflect a minimum of 20% of the daily wash system production and provide 20% additional sling bags for back up for the soiled side storage. Once textiles are sorted into holding areas other conveyors will automatically pick up rated loads and transport these textiles automatically to the classified soiled storage rails. The system must interact with the wash systems loading indicators/computers. The system will be designed to accommodate Continuous Wash Extraction System (CWES) and new 200/300lb. open pocket washer extractors. Calculations representing 500 pounds per productive person hour is the minimum specifications required for this system. The system will be designed to prevent spillage from all points of the operation.

g. The sorting conveyor shall be equipped with a photo cell feature to prevent textiles from dropping to the floor at the end of the conveyor. Furnish a large trash receptacle at the end of the sorting conveyor to collect falling trash automatically from the sorting belt. Furnish three (3) each, five (5) quart sharp containers on sorting platform work area. Furnish and install three (3) each large trash receptacles on safety rail behind sorting stations.

h. The platform for soiled sorting system shall be easily accessible by stairs and include rigid/sturdy safety handrail(s) painted yellow. The steps and platform shall be steel plate and covered with a 1/4 inch slip resistant, non-corroding, rubberized with urethane coating, anti-fatigue surface with yellow color coded safety lanes.

i. An hour gauge shall be installed on the soiled sorting system that will show actual hours of run time of the equipment.

j. Provide two (2) each 4-Plex GFI receptacles on the system for employee and mechanics use.

ITEM # 3 – AUTOMATED SOIL STORAGE/MONORAIL SYSTEM:

Furnish and install One (1) new automated soil storage/monorail system on the soiled side of the textile care processing facility. The Soil Storage monorail/storage system shall be based on a minimum 40% of 15,386 pounds, which is the daily wash system production requirement. An additional 10% back-up sling bags are required. The monorail storage and rails system must be supported from either the roof structure or floor supports.

Note: System must be engineered and sealed by a licensed engineer to coordinate structural design with structural load parameters from either the roof structure or floor supports. The structural design with structural load parameters from either the roof structure or floor supports must be submitted with bid proposal.

1. System shall be designed and capable of calling off stored classified linen to the CWES for automatic loading of the CWES loading conveyor. The soiled monorail system shall also be capable of sling loading the non-production washer extractor manually by employees.

2. Any lift station required within the soiled side system shall have rigid/sturdy safety guard rails for around the lift station area to prevent employees from walking into lowered lifting rails. Safety rails shall be painted SAFETY YELLOW.

3. All lift stations shall have the rated load capacity installed on the lifting rail in accordance with OSHA 1910.179.

4. Monorail lift stations shall be equipped with a safety lock device to prevent the lifting rail from falling in case of power or air loss or chain/cable break. All work shall be transported automatically without any assistance by employees to storage areas and wash systems from lift stations.

5. Rail selection shall be accomplished automatically electrically or pneumatic from lift stations.

6. Rail: The Rail (or Track) can be produced from the manufacturer’s standard materials.

7. Suspension Brackets (If offered with system): Suspension Brackets that connect the Rail to the support structure shall be made from the manufacturers standard materials. Painting or plating is approved methods of protection. Damage of any coatings during installation shall be repaired with a coating system matching color and durability characteristics of the original coating. The Rail Suspension must include sufficient sway bracing to prevent sideways movement of the rail during transport of bags.

8. Bag / Sling Assemblies: All Bag Assemblies must be equipped with the following;

a. Removable trolley wheels and bearings for ease of maintenance.

b. Easily removable bags for cleaning.

c. Bags must be capable of handling the batch weight offered of all linen classifications including specified soil or moisture levels.

9. Bag Stops: Bag stops must be capable of stopping the bags and preventing the release of multiple bags in the event of a break in electric or pneumatic supply to the system. The system shall be designed to make it possible to make minor adjustments to the location of stops easily on site and without the removal of rails.

10. Trolley Sensing Devices: Trolley Sensing Devices must utilize non-contact, inductive type Proximity Sensors. Sensors that are operated mechanically will not be permitted.

11. Monorail Control Systems: The soiled rail system must be controlled by an industrial Programmable Logic Controller (PLC) linked to a Computer Terminal.

12. Sling in Transit Alert: The rail system (Soil Side) shall be equipped with an audible and rotary LED light (colored Amber) warning device to indicate the sling is in transit and signage shall be provided by contractor to alert staff not to enter area when alarms are activated. The lights and alarms shall stay activated while in transit over employee walk areas. The warning rotary LED light (colored Amber) shall be a large (minimum 3-inch in diameter) light that can be seen throughout the soiled side of the laundry.

13. Soiled Side Computer Terminal:

a. One Computer Terminal must be provided with the soiled side system and must be mounted in an enclosure. The enclosure shall be set up as a standing workstation with a tilted work surface large enough to support a wireless keyboard and notebook and shall house the computer, monitor and color LaserJet printer. The enclosure may be custom built or pre-fabricated but shall be finished cabinetry capable of withstanding a moist environment. No particle board or wood cabinetry will be accepted.

b. The Computer Terminal will provide a color graphical representation of the system, user interface and a data base for statistical reporting.

c. The monitor for the computer terminal shall be an LCD, anti-glare, minimum 32 inches flat screen panel.

d. A remote wall mounted monitor shall be located in the textile supervisor’s office for visual monitoring of the system. Monitor shall be a minimum of 32 inches.

e. A complete replica backup computer shall also be provided.

14. Programmable Logic Controllers (PLCs):

a. The soiled side system will be controlled by a main brand industrial PLC that will be mounted in an IP54 rated control cabinet.

b. The Soiled PLCs must be linked via an Ethernet connection by the supplier. This connection will allow the visualization and control of the Soiled System from the Soil Computer Terminal and vice versa.

c. UPS battery back-up must be included to protect against data loss in the event of a power outage, with a 2-hour minimum battery backup.

15. Maintenance and By-pass Monorail Sling Rail:

A maintenance sling rail system shall be installed within the soiled monorail system. The maintenance monorail section shall be designed to allow inspection and maintenance to be performed on trolleys, bags, ropes etc. Upon completion of maintenance to the slings, trolleys etc., a lift station shall be connected to the maintenance rail to allow the sling to return to the empty sling bag storage rail.

A by-pass rail shall also be provided within the design of the monorail system.

16. Empty Sling Bag Storage:

a. Provisions must be made to store all bags in the Empty Bag Storage System. This is necessary in order for the Full Bag Storage System to be completely emptied.

b. All slings furnished shall be colored Blue with VA Logo in the soiled area of the textile care processing facility.

ITEM # 4 – WASTEWATER HEAT RECOVERY, WATER STORAGE/PUMPING/REUSE, STEAMLESS HEATING SYSTEM, WATER SOFTENING SYSTEM, AIR COMPRESSORS, REFRIGERATED AIR DRYERS:

General:

Furnish and install new, one (1) Steam-less system and all items and components necessary for:

A. Wastewater heat recovery system.

B. The water storage/pumping system.

C. Water reuse system.

D. Steam-less tunnel and non-production washers hot water heating system.

The water systems shall be sized to be capable of supporting a wash/extractor system, a continuous batch washer system, or a combination of the two. All proposed equipment will be based on a maximum water consumption of 2.6 gallons per pound of installed wash/extractor capacity (both production and non-production, and a maximum of .75 gallons per pound of installed continuous wash/extract system (CWES) capacity. A water reuse system is required.

A. Wastewater Heat Recovery:

The waste water heat recovery system shall be capable of transferring heat to both the hot and tempered water to be used in the washroom and capable of a minimum energy recovery of 65 percent if the average fresh water temperature is between 45-and 60-degrees F, and 55 percent if above 60 degrees F. The wastewater heat recovery system shall be capable of meeting the following specifications:

1. Preheat the hot water make up to within 10 degrees F of actual wastewater temperature, and the tempered water to 100 degrees (nom.) when the system is operating at average flow conditions. In addition, a control thermostat is required to adjust the stored tempered water tank temperature as desired. See Water System Sizing Guide, Table I, for equipment sizing guidelines on page 11 below.

2. The heat reclaimer shall be constructed so that the fresh water shall contact only corrosion resistant materials, and the heat exchanger heat transfer surfaces themselves shall be of stainless-steel design.

3. System shall have an automatic cleaning cycle as well as the capability of chemical cleaning through re-circulation. Fully automatic cleaning controls shall be included as standard equipment. During end of day shut down the PLC shall automatically initiate a re-circulation cleaning cycle of hot water through the heat exchanger for at least 30 minutes using a proper chemical cleaning solution.

All valve operation and cleaning chemical addition shall be automatic. Chemical cleaning solution shall be supplied by the contractor.

4. System shall have easy access for full inspection and maintenance of all waste and fresh water heat transfer surfaces.

5. All wastewater shall be screened for automatic removal and discharge of suspended solids to a minimum of 235 microns before entering the heat reclaimer. Cameras shall be included for easy visual inspection of the screening unit from floor level without disassembly.

6. System shall have automatic controls to ensure sufficient water is supplied to the hot and tempered water storage tanks to maintain normal washroom operations. Fresh and wastewater flow rates shall be controlled with automatic modulating valves that will maximize heat recovery according to the variable usage of waters during normal wash production. The automatic modulating control valves shall match the washer water demands to the available wastewater in the pit to achieve optimum heat recovery at any plant production level. A single system on/off switch shall be the only control needed to start the system at any water flow from 25 to 100% of design flows. Level controls shall evaluate plant water demands, available wastewater in the wastewater storage pit, and select the most advantageous flow rates to achieve the optimum heat recovery.

7. System shall have a Control panel with a 12” touch screen display for system operation and monitoring. The panel shall be a NEMA 12 enclosure. (NEMA is the National Electrical Manufactures Association that has standards and requirements that followed throughout industry). Display screens shall be provided for complete operational status and control of the wastewater heat recovery, water storage/pumping, and water reuse systems. The following information shall be provided, but not limited to, on the touch screen display: Water temperatures, water flow rates, pit & tank levels, pump operating status, valve position, indicating status light, and system alarms with acknowledgement. Temperature displays on the touch screen display shall indicate fresh water temperature in, preheated hot and tempered water temperatures out, and waste water temperatures before and after heat recovery.

8. The contractor guarantees:

a. The offered system will meet performance specifications.

b. The heat exchanger will not stop-up or plug when operated in accordance with the manufacturer's operating instructions.

c. The heat exchanger will be free of defects in workmanship and material defects for a period of five years.

B. Water Storage/Pumping System:

The water storage/pumping system shall be capable of meeting the following specifications:

1. The hot water storage tank shall have a storage capacity of "D" gallons/liters and the tempered water storage tank shall have a storage capacity of "E" gallons/liters. Material shall be of Type 304 stainless steel. If the fresh water has a normal chloride level of 40 mg/l or more, the tank materials shall be of Type 316L stainless steel. See Water System Sizing Guide, Table I, for Hot and Tempered Water Storage Tank Volumes.

2. The water storage tanks shall be insulated to prevent unnecessary heat loss. Insulation on all storage tanks shall be a minimum of 1-1/2 inches thick, 3-pound high density, semi-ridged duct board with factory installed vapor barrier facing and re-jacketed with a minimum .030 thick white PVC plastic. Water storage tanks shall have sight tubes installed with proper bracing. Tanks shall have thermistors with temperatures displayed on the main system control panel touch screen display. All storage tanks shall be provided with high level overflows and bottom drains discharging into site drains before going to the sewer. Tanks shall be provided with a means for full access inside tanks. All water storage tanks will require a side manway for internal access. All water storage tanks will be vented to the outside of the building.

3. Three (3) pumps shall be provided for the pumping system. One pump shall be for hot water and a second pump for tempered water. The third pump shall be usable as an on-line spare for either the hot or tempered water pumps. The pumping package shall be manifolded with corrosion resistant piping. Isolation valves are required to allow removal of a pump for servicing. The valving will also allow putting the spare pump on line by only changing valve positions. Furnish and install a 4-plex GFCI outlet on the triple pump panel. The pumps shall be rated at "F" gpm/lpm at motor full load rating and 115 feet (minimum) TDH. Motors will have a minimum service factor of 1.15. The pumps shall have a pumping efficiency of at least 70 percent throughout the majority of the operating range. See Water System Sizing Guide, Table I, for varying pump capacities.

4. A control panel shall be provided to indicate operational status of the water pumping system. The panel shall be a NEMA 12 enclosure. Switches with indicator lights shall be provided for motor operations. Pump motor starters and controls shall be located in this panel. Operational indicator lights shall be provided for motor operations and displayed on the main system control panel touch screen display and remote status panel.

5. A Variable Frequency Drive (VFD) shall be provided for each pump and a pressure transmitter shall be provided for each discharge of the pumping system. The VFD controllers shall read the discharge pressure signal from the transmitters and automatically adjust the pumping speed by increasing or decreasing the output frequency of the VFD according to plant demand. The pressure transmitters shall be pre-mounted in the pump discharge piping and pre-wired to the control panel. Included in the control panel are the necessary controls to operate the middle pump (spare pump) from either of the pressure transmitters.

6. Continuous wash/extract system shall be supplied with hot and tempered fresh water through a temperature and pressure compensated blending valve. A temperature gauge will indicate selected blended temperature going into the system.

7. Heating shall be accomplished by use two of flexible, bent steel water tube design heater. Heater shall be fired with natural gas and it shall be furnished complete and assembled, factory fired and tested with controls and trim mounted and wired. Heater shall be manufactured in accordance with ASME Power and Heating Boiler Codes, Sections 1 & 1V and registered with National Board of Boiler and Pressure Vessel Inspectors for 125 Maximum Allowable Working Pressure (MAWP). All controls and trim shall be in compliance with UL Standards, which can be found online. Design and installation shall be of the bent water tube design with tubes Grade SA-53 steel minimum 1-5/16” O.D. and wall thickness minimum .133d” welded to top and bottom headers with high tensile weld metal. Tubes shall be of the b bent design to permit free expansion and contraction. Heater shall be mounted on a steel frame and enclosed in a heavy steel cabinet with controls mounted. Heater cabinet shall consist of an inner and an outer liner of minimum 16-gauge steel insulated with high temperature thermal fiber insulation minimum 1-1/2” thick. Cabinet shall be finished with baked enamel, heat resistant finish for protection. Trim shall include electronic flame safety with electric ignition, draft hood or barometric damper, safety relief valve, temperature and pressure gauge, operating temperature control, manual reset high limit temperature control and manual reset low water cutoff with test and reset buttons.

8. Tunnel heating system will be capable of filtering and heating the water from the appropriate modules of the Tunnel and delivering it back to the appropriate module of the tunnel. In addition the system will have the ability to circulate and heat the water from appropriate module of the tunnel and deliver it back to the appropriate module’ The heat exchanger shall be capable of heating the water of the appropriate module from 140 F to 160 F and heating the re-circulating water from the appropriated module from 150 F to 170 F when supplied with an adequate flow of 190 F hot water from the plant heating loop.

a. This system will include a shaker screen filtering system. The system is designed to filter out suspended solids larger than 175 microns (.007") from both the water stream and recirculating stream before entering the heat exchanger.

b. The filtering system will consist of a SHAKER SCREEN pre-mounted to a dual compartment stainless steel filtered water tank. A transfer tank and pump will be supplied that will collect the water from the appropriate module and transfer it to the Shaker Screen. The pump on the tunnel will feed the water from the appropriate module to the Shaker Screen. The Shaker Screen will filter the tunnel waters and deposit it into the respective compartment of the tank. Included is a pump that will circulate the filtered water from the appropriate module through the heat exchanger where it will be heated to temperature. Tunnel supplier shall supply a pump for the tank that will deliver the heated water from appropriate module and deliver it the appropriate module. Tunnel manufacturer shall also supply a pump that will take the filtered water from the tank compartment, circulate it through the heat exchanger and deliver it back to the appropriate module.

c. A heat exchanger module capable of heating the tunnel waters as stated above. The heat exchanger design will be to American Society of Mechanical Engineers (A.S.M.E). pressure requirements and will consist of stainless steel heat transfer area designed for high efficient heat transfer.

d. The system will have temperature control circuit to maintain the appropriate tunnel module water at the desired temperature. The desired temperature can be selected on a Touch Screen on the control panel door for positive operator control. The tunnel will control the circulation of the appropriate module water through the heat exchanger until the desired temperature is reached.

e. The heat exchanger will be pre-assembled and will be skid mounted for easy installation alongside the tunnel washer. Temperature readings will be provided at all inlets and outlets for performance monitoring.

f. All unprotected carbon steel surfaces will be grit blasted and coated with polyurethane enamel according to manufacturer’s instructions.

g. A control panel will be supplied. It will include all motor starters, level and temperature controls, operating switches and indicating status lights. The Control Panel is UL Labeled. The complete system will be pre-assembled, pre-piped, and pre-wired as much as possible to reduce installation time and costs. Tank insulation is required.

9. Hot water and reuse tank heating system using a heat exchanger for elevating the hot water and if supplied the reclaimed rinse water from normal discharge temperatures to the desired hot water and rinse water storage temperature.

a. The water will be heated by using stored hot water from the hot water storage tank. The reuse water will be re-heated to within 10 degrees of the stored hot water tank temperature.

b. Special dedicated hot and reuse water circulating pumps will be used to circulate hot and reuse water from the respective tanks to the exchanger for reheating.

c. The entire package will be shipped completely assembled and tested. All interconnecting piping, pumps, controls, valves, and instrumentation will be pre-mounted on a structural steel frame. The unit will only need to be placed in its final location, connected with piping to its proper supply tank and wired to the starters supplied in the separately proposed Water Control Consoles to be operational.

d. The incoming reuse water must be filtered before being pumped to the heat exchanger to at least 354 microns (a 40 mesh MG screen).

C. Water Reuse System:

The water reuse system shall be capable of reusing an average of 25 percent of the water used in the production wash/extractors. The system shall collect, store, heat, and return (to the washroom) the water to be reused. A trash pump, for transferring the reuse water to the storage tank, shall be provided. An alternate supply line from the hot water header shall provide make up fresh water through an automatic fill valve if no reuse water is available. The water reuse system shall meet the following specifications:

1. The water reuse tank shall have a capacity of "B" gallons/cu meters. See Reuse Water Storage Tank Volumes, Table II, for varying tank capacities.

2. All reuse water shall be screened of suspended solids to a minimum of 1130 microns before entering the reuse water storage tank. Camera shall be included for easy visual inspection of the screening unit from floor level without disassembly.

3. The water reuse heating system shall be capable of automatically maintaining a reuse storage tank temperature within 10 degrees of the hot water storage tank.

4. The reuse tank shall be insulated to minimize heat loss. Insulation shall be a minimum of 1-1/2 inches thick, 3 pound density, semi-ridged duct board with factory installed vapor barrier facing and re-jacketed with a minimum .030 thick color coded PVC plastic. Water storage tanks shall have sight tubes installed with proper bracing. Tank shall have a temperature thermistor with display on the heat recovery system main control panel touch screen display. Tank shall be provided with high-level 4” overflow and bottom 3” drain and discharging into sight drains before going to the sewer. Tank shall be provided with a means for full access inside tanks. All water storage tanks will require a side manway for internal access. Provisions must be made for collecting and discharging settled lint on the bottom of the tank through the 3" drain valve daily at shut down.

5. Two reuse feed pumps shall be provided. The first pump shall be the main reuse water feed pump. The second pump shall act as a spare. The pumping package shall be manifolded with corrosion resistant piping. Isolation valves are required to allow removal of a pump for servicing. The valving will also allow putting the spare pump on line by only changing valve positions.

a. The pumps shall be rated at “A” gpm/lpm at motor full load rating and 115 feet (minimum) TDH. The pumps shall have a pumping efficiency of at least 70 percent throughout the majority of the operating range. Motors will have a minimum service factor of 1.15. See Reuse Feed Pump Sizing Guide, Table II, for varying pump capacities.

b. A Variable Frequency Drive (VFD) shall be provided for each pump and a pressure transmitter shall be provided for the discharge of the reuse water pumping system. The VFD controller shall read the discharge pressure signal from the transmitter and automatically adjust the pumping speed by increasing or decreasing the output frequency of the VFD according to plant demand. The pressure transmitter shall be pre-mounted to the pump discharge piping and pre-wire to the control panel. Controls necessary to operate either pump from the pressure transmitter shall be included.

6. Controls for the reuse system shall be located in a control panel mounted on the dual reuse system pumping system with switches and indicating lights provided for motor operations. Operational status of reuse system shall be displayed on the main heat recovery system control panel touch screen display and remote status panel.

7. Furnish and install a 4-plex GFCI outlet on the water reuse panel.

All controls and trim shall be in compliance with UL Standards. Construction shall be of the bent water tube design with tubes Grade SA-53 steel minimum 1-5/16” O.D. and wall thickness minimum .133d” welded to top and bottom headers with high tensile weld metal. Tubes shall be of the b bent design to permit free expansion and contraction. Heater shall be mounted on a steel frame and enclosed in a heavy steel cabinet with controls mounted.

Heater cabinet shall consist of an inner and an outer liner of minimum 16 gauge steel insulated with high temperature thermal fiber insulation minimum 1-1/2” thick. Cabinet shall be finished with baked enamel, heat resistant finish for protection. Trim shall include electronic flame safety with electric ignition, draft hood or barometric damper, safety relief valve, temperature and pressure gauge, operating temperature control, manual reset high limit temperature control and manual reset low water cutoff with test and reset buttons.

Provide all necessary expansion tank, valves, and flue vent to atmosphere through roof. Heater shall be capable of providing the flow and temperature required by the wash process, using fresh cold water at 60 degrees F.

E. Wastewater Recycling System: NOT REQUIRED

F. Water Softener System:

Furnish and install all items and components necessary for the Water Softener System. The water softening system shall be capable of meeting the following specifications:

1. The softening system shall have the capability of conditioning required quantities of water from the normal building grain (as specified by engineering) (9 grains) hardness down to a soft level of 0 grains. The softener will have sufficient resin capacity to operate the normal washroom production for the total daily (seven hour workday) production without regeneration. A five (5) day metered regeneration system with salt or brine storage capacity, at stated textile production rates, is required. All mineral tank(s) will be provided with bottom drain and back wash connections piped to the sewer drain. All tanks will have full inside accessibility for cleaning, visual inspection and maintenance.

2. A new Salt/Brine storage tank will be supplied with the new water softening system. The contractor shall provide all connections to the Salt/Brine storage tank with high level overflow drain connection and piped to the sewer drain. All new piping shall be non-corrosive piping.

3. One (1) water test kit will be provided with the system. This kit shall contain hardware and chemicals necessary to perform titrations, measurement of Ph, temperature, and water levels.

G. Water Back-Flow Prevention:

The water system shall include total water back-flow prevention into the main water supply.

H. Remote Status Panel:

A remote status panel with a minimum 12” touch screen display panel shall be incorporated into the system, which will provide complete operational status of the new air compressors; wastewater heat recovery, water storage/pumping, water reuse system. The remote status panel shall also provide alarm status and notification for all of the above systems. A color LaserJet printer shall be provided with the remote status panel.

A secondary remote status panel shall also be located in the laundry supervisor’s office. Monitoring displays shall indicate laundry air header pressure, hot, tempered and reuse washroom header pressures and be appropriately labeled. The remote panel shall indicate the status of water flow patterns and operational pumps. Furnish and install a 4-plex GFCI outlet on the Remote Status Panel.

I. VIDEO GRAPHIC RECORDER MONITOR:

An automatic video graphic recorder shall monitor and record incoming fresh water temperature, preheated hot water temperature, preheated tempered water temperature, wastewater temperature in and wastewater temperature to sewer. The contractor shall provide this panel with appropriate signals to the status panel. The contractor shall furnish schematic piping and wiring diagrams/drawings for the entire system within 60 calendar days after the date of award.

PERFORMANCE GUIDES:

TABLE I

WATER SYSTEM SIZING GUIDE

Water Used per Hour “A” Hot Water Flow Rate per Minute “B” Tempered Water Flow Rate per Minute “C” Hot Water Storage Volume “D” Tempered Water Storage Tank Volume “E” Pump Flow Rate per Minute “F”

Basis – 60% Hot water, 160ºF (71ºC) Hot Water Storage Temperature

TABLE II

REUSE FEED PUMP & STORAGE TANK CAPACITY GUIDE

“A” Rinse Water Storage Tank Volume “B”

TABLE III

FLASH STEAM REQUIREMENT GUIDE

Water Used Per Hour “A” Returned Plant Condensate per Minute “B”

J. Air Compressors and Air Refrigerated Dryer System

Compressed Air System

Furnish and install new compressed air system, including (2) air compressors, electric motors with controllers, starters and local disconnects, controls, after cooler, refrigerated air dryers, filters and receiver tank with all necessary piping, fittings, valves, gauges, switches and all necessary accessories, connections and equipment. System shall be a dual air compressor system designed for alternate compressor duty each to provide 100% independent service capacity requirements. Each system shall be equipped with redundant manual valves and automatic control for service isolation. System shall consist of the following:

1. Air Compressors: Provide (2) 30/40 HP rotary screw, oil injected air-cooled fluid cooler and aftercooler industrial air compressors 100% continuous duty with ASME code designed receiver tanks, easy-to-read instrument panels, and low-sound full enclosures limiting total sound level to less than 69 dBa measured at 36: from the enclosure.

1. Air compressors shall be factory assembled, wired, piped and tested to deliver air of quality equal to intake air. Compressors shall be capable of operating against a pressure of 150 psig, and shall have a rated capacity not less than 180 ACFM @ 125 PSIG.

1. Air quality shall meet or exceed ISO standard 8573.1 Class 1 for oil vapor and Class 2 for particulate.

1. Air compressors shall operate in a lead-lag sequence based upon air supply demand.

1. Air compressor controls shall indicate main power, air pressure, air outlet temperature, high discharge air temperature, excessive separator element pressure differential, and include an hour meter.

1. Air compressor system shall include all interconnecting piping between air compressors, air dryers, receiver tank, and specified equipment. Full size by-pass piping with manual isolation valves shall be provided with each air dryer.

1. Timed, automatic blow down of compressor tank(s) is required. Water drain lines shall be installed on each compressor tank and extended to nearest floor drain.

1. Air Dryers – provide (2) air dryers. Shall be refrigerant type, non-cycling with capacity sufficient for all pneumatic controls and equipment. Unit is required for each compressor. Provide color touch screen/microprocessor type controls with diagnostic display are required.

1. Air Filters – provide coalescing type filters before and after each air dryer designed to remove oil, entrained water mist and dirt from compressed air. Filters shall have PSIG operating pressure and differential pressure gauges.

1. Receiver Tank- provide (1) 500-gallon ASME code rated 150 PSIG vertical receiver tank with pressure gauge, safety relief valve, and drain connections.

1. Electrical characteristics - 480 volts, 3 phase, 60 cycles

1. Standard factory finish.

1. Provide Consumables including complete set of drive belts if applicable; two filter cartridges for each compressor intake filter; sufficient oil supplied in standard container sizes for a complete oil replacement, with an oil filter, each of grade recommended by the manufacturer for best performance and longevity; and two filter cartridges for air dryer intake filter.

1. A blow-down device will be installed within the mechanical room. A minimum 1 each and shall be capable of reaching around all equipment within the compressor room/area. This device(s) shall include:

a. Gauged air pressure regulator, with quick disconnect, capable of regulating air pressure from 0 PSI to 30 PSI.

b. Minimum 50 foot length of heavy duty, reinforced non-kink minimum 1/2-inch ID diameter air hose on an automatic retractable reel.

c. Trigger operated air nozzle with any necessary extensions for reaching hard to reach areas.

d. Locations of the blow down device(s) shall be depicted on drawings.

14. Compressors shall be equipped with an illuminated emergency stop button (when activated). Normal stop and emergency stop buttons shall be colored RED. A yellow background with legends shall be installed behind each emergency stop button.

15. Provide 4-Plex GFI receptacle and an air line with quick disconnect at each equipment location for mechanics use.

16. An hour gauge shall be installed on each compressor and air dryer that will show actual hours of run time on the compressors and air dryers.

17. The air compressor room shall be ventilated and exhausted to the outside atmosphere of the building to reduce heat buildup in the room that could affect the operation of the equipment.

18. Air Compressors and Refrigerated Air Dryers shall be equipped with lockout/tag-out for servicing and maintenance of equipment. All lockout/tag-out locations shall be marked and identified on the machine with instructions on lockout procedures for the equipment offered. Lockout/Tag-out procedures include all electrical, air etc. Relief valves shall be installed for lockout/tag-out procedures. Tags and locks shall be provided that contains multiple types of lockout and tag-outs by the contractor. Tags and locks shall be provided in a lockable wall mounted cabinet.

19. Ethernet/internet connections shall be installed to each Compressor and air dryer (if applicable to equipment offered) that will allow for trouble shooting mechanical/operational problems from factory technicians. VA will supply internet services to the building, and it will be the contractor responsibility to connect to all equipment.

20. Within the layout of the mechanical room, the contractor shall install new ceiling mounted bright LED lighting for the compressor and air dryer area for operational maintenance of the compressors and air dryers.

K Mechanical Room Ventilation

1. The mechanical room shall have ventilation/exhaust fans installed to remove excess heat from the room.

ITEM # 5 – ENERGY MONITORING SYSTEM:

Furnish and install one (1) Energy Monitoring System. System shall provide for real time utility and event measurement for natural gas, electric, air, water and sewer (wastewater) with seamless integration for reporting. System shall include installation of new flow meters and sensors having sufficient analog/digital sophistication for the collection of data required by the system furnished. Utility data shall be captured by a data logger located within the textile care manager’s office, which will enable the VA to measure and manage utility usage. Contractor shall install new flow meters/sensors and control interconnection wiring, and fully commission system including data reporting set-up. (VA shall be responsible for suppling the internet service for the contractor to connect to.) The system is to be compatible and work with Item #22 Industrial Laundry Plant Management System

1. Following are the minimum functional specifications:

a. Distributed network architecture capability (internet connectivity capability)

b. Capability for email/text alerts for utility metrics.

c. Standard 32 low speed (frequency less than 25 Hz) digital inputs that are suited for most lower resolution digital output flow meters (i.e. water, gas, wastewater, sewer, etc.) and any other digital event counters.

d. Standard 16 analog inputs that are suited for most analog output temperature sensors, water level sensors, pH monitors, etc.

e. Capacity for expansion – up to four additional cards may be installed, either 16-channel low-frequency digital input cards or 8-channel analog input cards, or 4-channel high-frequency digital input cards.

f. Control box for…