PWS Paint Booth.pdf

PERFORMANCE WORK STATEMENT, DTD 16 AUG 2023

1. Provide 64’ feet and 4-inch-long x 22 feet wide x 19 and 8” feet high Side Downdraft Pressurized Spray and Cure Booth. The equipment and materials should be made in the USA.

2. Provide all necessary equipment and personnel to assemble and install the Paint Booth on Whiteman AFB, meeting entrance guidelines per base Security Instructions.

3. Salient Characteristics:

1. Internal Clear Working Dimensions: 16'-0" wide x 16'-0" high x 64'-0" long

2. Exterior Maximum Dimensions: 22’ wide x 19'-8" high x 64'-4" long

3. Equipment Panel Construction Type: Single skin, 18-gauge minimum, galvanized steel

4. Support Structure Construction Type: I-beam structural steel

5. Airflow Design: Side downdraft

6. Target Average Air Velocity: 50 FPM

7. Light Quantity: 40 lights minimum

8. Light Type: LED TB inside access

9. System Voltage: 480V, 3 phase, 3 wire

EXHAUST DESIGN

1. Total Design Exhaust: 51200 design CFM minimum

2. Exhaust Method Design: Sidewall exhaust chamber

3. Exhaust Fan Framework: (30”0 Tube axial fans with 5 HP TEFC motor at 3/4" SP minimum

4. Exhaust Filter Selection: 20x20x2 GFS Wave (Panel)

EXHAUST STACK

1. Exhaust ductwork constructed from 20-gauge galvanized spiral sections with connection rings.

2. Exhaust Duct Building Penetration: Roof

3. Exhaust Duct Construction Design: 4 Lots of Spiral Exhaust Ductwork

AIR MAKE-UP UNIT (AMU) DESIGN

1. Total Design Supply CFM: 51200 design CFM

2. Intake Method Design: Ceiling plenum

3. AMU Configuration: Vertical outdoor side discharge

4. AMU MBTU/ Cure Temperature: 5.363 MBTU designed for 160 degrees F cure temperature

5. AMU Stand: Stand included

6. AMU Performance Operation: Variable air volume (VAV)

7. AMU Mechanical Information: 51200 CFM at 1/2" SP

8. AMU Heating System: Direct-fired natural gas

9. AMU Duct Construction Design: Rectangular

10. AMU Duct Building Penetration: Wall

11. Discharge Duct Includes: One transition and one lot of straight duct

DOOR DESIGN

1. Solid Back or Pass-Through Equipment Flow: Drive-through

2. Front Opening/ Product Door Access: RollSeal Automated Doors use a triple-layered fabric and airtight seal to prevent overspray from escaping the booth and keep contaminants out of paint jobs. They operate at the press of a button, and the controller allows you to set the door’s speed as it rolls up and down, ensuring smooth starts and stops. With RollSeal Doors, air between layers helps maintain desired heat levels inside the booth, meeting cure temperature requirements. Plus, with fewer moving parts than traditional roll-up doors, less time and money is spent replacing rollers, tracks, panels and hinges. RollSeal’s fabric doors are impact-resistant; however, if they are punctured or damaged, they can be easily repaired or replaced at a fraction of the cost of a metal roll-up door. Designed for operation temperatures of under 200°F

3. Front Opening/ Product Door Size: 12'-0" wide x 14'-0" high

4. Rear Opening/ Product Door Access: RollSeal Automated Doors use a triple-layered fabric and airtight seal to prevent overspray from escaping the booth and keep contaminants out of paint jobs. They operate at the press of a button, and the controller allows you to set the door’s speed as it rolls up and down, ensuring smooth starts and stops. With RollSeal Doors, air between layers helps maintain desired heat levels inside the booth, meeting cure temperature requirements. Plus, with fewer moving parts than traditional roll-up doors, less time and money is spent replacing rollers, tracks, panels and hinges. RollSeal’s fabric doors are impact-resistant; however, if they are punctured or damaged, they can be easily repaired or replaced at a fraction of the cost of a metal roll-up door. Designed for operation temperatures of under 200°F

5. Rear Opening/ Product Door Size: 12'-0" wide x 14'-0" high

6. Door Limit Switches: Included

7. Personnel Door Access Arrangement: Four (4) 3'-0" wide x 7'-0" high doors with 18" wide x

24" high observation window

8. Must include a personnel door in the center of each side

FORCED DRY PAINT CURING SYSTEM WITH VARIABLE AIR VOLUME

The Air Make-Up Unit (AMU) shall be designed for forced dry paint curing with a two-speed motor and damper package to discharge air at 160 degrees F.

CONTROL PANEL

1. Interlocks and lights in pressurized booth

2. Type 12 rated enclosure products:

a. Protection from electrical shock for the control panel and working area.

b. Protection against dust, dirt, oil, and non-corrosive liquids.

3. Touch screen control panel HMI for easy access and monitoring.

4. Customizable control panel.

5. Included components:

a. Motor starters with branch circuit and overload protection, per NEC Article 430.

b. Main door mounted disconnect handle provides additional protective features for the control panel, wiring system, and lockout/ tagout.

c. 120 VAC transformer with primary/ secondary fusing for lighting and control.

d. Lighting and control with branch circuit protection and contactor.

e. Control power supply with 24 VDC.

f. Airflow switches and interlocks.

g. Terminal strip for field wiring.

h. System operating lights.

i. 30 mm push buttons.

Standard features

1. Status screen shows current booth status, process temperature, and set point temperature.

2. Intuitive pop-up screens for setting temperatures, changing operations, viewing faults, and cycle times.

3. Digital display of the set cycle time and time remaining.

4. Multi-zone programming.

Modes of operations

a. Standby: Initiated automatically; the booth controls are powered but not operational.

b. Spray: Initiated via a button on the touch screen; fans are running and the air solenoid valve (ASV) opens to allow spraying.

c. Post-Spray and Pre-Cure Purge Modes: Initiated automatically; timed cycle removes contaminated air from the booth before entering spray or cure mode.

d. Cure: Initiated via a button on the screen; raises booth temperature to cure the paint; the lights and ASV are disabled.

e. Post-Cure Purge: Initiated automatically upon exiting the cure cycle; decreases booth temperature to the spray temperature.

f. Shutdown Delay: After motors are shut down, the system cannot be restarted for a short period of time to allow the system to complete the shutdown process.

AUTO-BALANCE SYSTEM

Paint booth required to be balanced when it is in operation. System for monitoring interior booth pressure and automatic adjustment required.

ECONOMY MODE

Economy mode to reduce the exhaust airflow to conserve energy when the spray gun is not in use.

MANOMETER

Manometer required to measure differential pressure, indicating when paint arrestors or air intake filters are sufficiently loaded and need replacement.

SOLENOID VALVE

To prevent the working area of the equipment from reaching combustible levels, the three-way air safety valve interlocks the compressed air supplying the application equipment with the ventilation system and prevents spraying operations when exhaust fans are off. This safety feature is in accordance with NFPA 33 requirements. Additionally, any listed light fixtures included with this equipment provide a light lens switch that will shut down operation when the lens is not in the closed position. This is required to help prevent the possibility of the electrical components of the light from being exposed to a combustible level of overspray. Compressed air between the valve and the spray equipment is vented out when the valve is closed to assist in preventing damage to the equipment when the safety valve is triggered.

DOOR LIMIT SWITCHES

Limit switches shut down painting when equipment doors are opened (time delay is standard on personnel doors). Time delay relay allows access to the booth without stopping operations. The standard limit switch is Class I, Division 2 listed. Door limit switches are required when an Auto-Balance System is included in the design

MINIMUM INSTALLATION CONSISTS OF THE FOLLOWING:

1. Freight cost associated with equipment shipped to job site.

2. Securing any necessary permits and paying applicable taxes for construction.

3. Receiving, off-loading, and securing of all equipment.

4. Uncrating of equipment.

5. Erection of the spray booth and AMU.

6. Installation of the intake/ discharge ductwork.

7. Supplying all necessary assembly hardware for the spray booth.

8. Installation of exhaust duct, duct supports, fan connection rings, and stack head assemblies.

9. Wiring from the control panel(s) to all devices (fans, lights, and switches).

10. Electrical grounding of all components.

11. Airline installation to two (2) points of use.

12. Providing adequate lifting devices (forklift/ scissors lift) capable of lifting workers or equipment to any point necessary during installation.

13. Any crane needed for lifting.

14. Start-up and balancing of the paint booth and AMU by factory technician.

15. Training of customer personnel on operations and maintenance of all components installed.

GENERAL CONTRACTOR SHALL BE RESPONSIBLE FOR THE FOLLOWING:

1. Providing clear work are prior to installation of all paint equipment.

2. Providing secure storage for installation crew tools and equipment.

3. Providing all required building modifications.

4. Providing level floor for installation of spray booth.

5. Supplying adequate electrical supply to all control panels for system operation.

6. Providing necessary compressed air supply piping to demarcation point noted on the Drawings at 25 CFM per point of use.

7. Providing necessary natural gas supply piping. Piping to be terminated into customer-provided gas regulator for pressure control.

8. Providing fire protection system.

9. Providing necessary wall/ roof penetrations.

10. Providing sealing, flashing, and weatherproofing of all penetrations.