CPA-ULTRA Hygienic Air Handling System

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CPA-ULTRA Hygienic Air Handling System install
CPA-ULTRA Hygienic Air Handling System
CPA-ULTRA Hygienic Air Handling System installation

Custom built to perfectly suit your needs

EVAPCO's ULTRA-Critical Process Air (CPAU) Systems meet the demanding requirements of temperature, pressurization and air purity control with humidity and condensation control. Designed specifically for the most hygienic applications within industrial refrigeration market, the Evapco CPAU offers complete flexibility in design, capacity and features to fulfill the most demanding applications.

CPAU Systems are constructed with a comprehensive choice of quality components integrated together to create a state of the art, custom air handling unit backed by the industry's most experienced critical process product design and system application engineers.

  • Stainless Steel Liner – Standard interior construction on the EVAPCO CPAU includes stainless steel drain pans in EVERY section of the unit, as well as stainless steel interior walls, ceiling and dampers
  • Hygienic Closures – Every EVAPCO CPAU includes hygienic closures in every section to minimize areas where bacteria can collect and make the unit easier to clean and inspect
  • Hygienic Filter Frames – The EVAPCO CPAU unit is designed with special hygienic filter frames designed to eliminate the notches found on standard filter frames, again, minimizing the areas inside the unit that can trap bacteria
  • Hygienic Drain Pan Design – The EVAPCO CPAU is designed with fully-welded, double-sloped drain pans designed to completely eliminate standing water inside the unit
  • Hygienic Blower & Motor Mounting – Supply air blower/motor mounted to allow complete access for cleaning and inspection
  • Hygienic Coil Mounting – All coils are mounted to allow complete access for cleaning and inspection
  • Direct Drive Blower Motors – Direct drive design eliminates belts and sheaves. Direct drive blowers come standard with EVAPCO supplied VFD for design flexibility
  • Foamed-in-Place Insulation – EVAPCO CPAUs feature pour-foam wall panels for maximum insulation and no-through metal design
  • Hygienic LED Lights – Each EVAPCO CPAU is available with factory-installed hygienic LED light fixtures. Fixtures are mounted off the ceiling and have no flat surfaces for moisture to collect. Lighting output ranges from 1000-8400 lumens
  • UVC Lights – Each EVAPCO CPAU is available with UVC lights located on the downstream side of the cooling coil, designed to completely eliminate bacterial growth in this wet environment
  • Ranging in airflow from 1,000 CFM to 112,000 CFM
  • AHRI Standard 420 Certified™
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The CPAU air handling unit is designed to condition recirculated air and outside air during production mode. Recirculated and outside air will be filtered with pre-filters, then cooled and/or heated as required to maintain the Room Return air temperature and humidity, and finally filtered with final filters before being supplied to the room. CPAU units are available with the optional economizer mode as a means of providing “free” cooling while the unit is in production mode. When conditions are favorable, the enthalpy economizer mode will open the outside air dampers on a call for cooling and close the return dampers. The unit can also control the room pressure utilizing the outside air and return air dampers to pressurize the room and using exhaust fans (remote or integral) to relieve the pressure in the room. 

During the optional cleanup mode, the CPAU air handling unit is designed to condition 100% outside air. The outside air will be cooled or heated as required to maintain the supply air temperature, before being supplied to the room, purging the room of moisture and chemical produced during the washing process. 

EVAPCO Sanitizing System (ESS™) Technology

Specifying the EVAPCO Sanitizing System (ESS) with your CPAU system will virtually eliminate hazardous bioaerosols from the cooling coil/pan, resulting in hygienically clean air and improved product quality while maintaining system performance and significantly reducing annual maintenance costs.

  • Provides full germicidal effect at low air temperatures
  • Over seven times more effective than a standard UV bulb
  • Destroys byproducts from mold and bacteria
  • Lower operating and maintenance costs
Interior Service Lights
  • Hygienic LED options
  • Unit includes a light in each section
  • 1000-8400 lumen options available
Sure-Aire Airflow Measuring
  • Measures the pressure drop across the fan inlet venturi to provide airflow measuring accurate to within 3%
  • No increase in fan energy consumption or noise levels
  • When paired with a VFD, unit control system can vary the blower speed to maintain the desired unit airflow
Surge Drum Catwalk System
  • Fully-assembled support system for the surge drum
  • Includes OSHA ladder (with cage), full perimeter handrail and aluminum safety grating so workers can safely access the surge drum and associated valves
Motor Removal System
  • I-Beam with manual trolley designed to assist workers with the removal and installation of blower wheel and motor (as necessary)
EVAPCO Service Vestibule
  • Provides a space protected from the elements for workers to service the unit
  • Vestibules are insulated, heated and ventilated (as required)
EVAPCO Service Platform
  • Platform shares common base steel with CPA unit and does NOT require external support
  • Includes pre-cut aluminum safety grating, galvanized steel handrail system and self-closing safety gate
Additional Options:
  • Standalone, factory installed, Allen Bradley Compact Logix (standard) or Control Logix PLC systems
  • Allen Bradley Panel View Plus HMI’s (6” standard on the main control panel)
  • NEMA 4X remote panels with push-buttons (standard) or an Allen Bradley HMI
  • Allen Bradley Power Flex Series VFDs
  • Stainless steel interior liner (dampers, drain pans, walls, ceiling and filter frames)
  • Stainless steel exterior
Document Categories
Name File Size Type Language
Global Product Catalog 53.71 MB Catalog English
CPA Installation Instructions 1.33 MB Rigging English
CPA Installation Instructions (Spanish) 6.09 MB Rigging Spanish
CPA Maintenance Instructions 398.5 KB O & M English
CPA Ultra Unit Specifications 197.74 KB Specification Sheet English
CPA-Ultra Brochure 10.5 MB Catalog English
Maintenance Schedule 87.79 KB O & M English
Typical CPA Specifications 71.67 KB Specification Sheet English
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