VTech Process Equipment LLC | Process Equipment for HVAC/R Assembly Lines

Pre-Evacuation Equipment for Commercial/Domestic Refrigeration and Air Conditioning

(Click on thumbnail to enlarge)

Pre-Evacuation Equipment for Commercial/Domestic Refrigeration and Air Conditioning
Pre-Evacuation Equipment for Commercial/Domestic Refrigeration and Air Conditioning

Pre-Evacuation Equipment for Commercial/Domestic Refrigeration and Air Conditioning
Pre-Evacuation Equipment for Commercial/Domestic Refrigeration and Air Conditioning

The importance of pre-evacuation in refrigeration and A/C assembly process cannot be stressed enough since it has a direct correlation with the overall product quality. Please consult our knowledge base on Pre-Evacuation in our Process Technology Fundamentals section for more information.

VTech's pre-evacuation equipment ranges from a single pump manual configuration to plant-wide pre-evacuation carousels with process data tracking. During the project design phase, we take into account specific parameters of the refrigeration circuit while reviewing the assembly line process, in order to identify the expected level of condensable and non-condensable gases present inside the circuit. Once we have established the minimum acceptable pre-evacuation time as well as the Takt time of the production line, we can establish the number of pre-evacuation units required. The next step is to decide on the lay-out.

In commercial refrigeration, where typical Takt time is longer, we tend to use multiple-pump solutions on carts that can be wheeled around as needed. This type of system is typically PLC-controlled and allows for pre-evacuation and vacuum decay leak test. In domestic refrigeration, the most typical layout is a carousel indexed according to the takt time of the process.

VTech works directly with the customer to set up the installation and provide maintenance training.

Learn more from our knowledge base:

Pre-Evacuation Best Practices and Pump Quantification (PDF - 129 KB)
Pumpdown Time and Pump Implementation (PDF - 212 KB)
Sizing Vacuum Pumps (PDF - 95.0 KB)
Understanding Pressure and Vacuum (PDF - 144 KB)  

VTech Pre-Evacuation Equipment

 
Vacuum Pump Sizes
  • From 6 to 21 cfm (10m3/h to 28m3/h)
Vacuum Gauge Type
  • Active Pirani
  • Vacuum Transducer
Vacuum Pump Ultimate Pressure
  • 1 x 10-4 mbar
Vacuum Measurement range
  • 1,000 to 1 x 10-3 mbar
Vacuum Measurement Units
  • Pa
  • Hg
  • µm
  • Torr
Pre-Evacuation Equipment Control
  • PLC, PC
Pre-Evacuation Equipment User Interface
  • Digital Display
  • PC Interface
Vacuum Hose Quick disconnect fittings
  • PCU
  • Hansen
  • FasTest
  • Others on request
Pre-Evacuation Equipment Product Applications
  • Commercial Refrigerators
  • Domestic Refrigerators
  • Air conditioners (unitary to rooftop)
  • Scientific
  • Water Coolers
  • Display cases
  • Food prep
  • Walk-in coolers
  • Heat pumps
  • Pool heaters
  • Sensitive electronics cooling
  • Chillers
  • Construction equipment
  • Beverage Systems

Get Adobe Reader