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

Air ConditioningR410a - R407c Refrigerant Charging and Leak Testing

Here are several examples of how we have applied our technology in the Air Conditioning market:

1) Boosting Productivity in Air Conditioning Manufacturing

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Boosting Productivity in Air Conditioning Manufacturing
Boosting Productivity in Air Conditioning Manufacturing

A multi-national Residential and Commercial Air Conditioning manufacturer wanted to boost its productivity while keeping the same production lay-out. We identified their leak detection method as one area that could benefit from a process change.

Therefore, we designed the VTech 75 “Split” System whereby pressure decay and tracer gas sniffing tests are performed separately, allowing for two units to be processed simultaneously. This process change also allowed separating high-pressure testing from tracer gas manual sniffing, since they have different safety requirements for the operators. Currently, high-pressure testing is performed using a protection cage, while manual sniffing takes place in a separate room isolated from the production environment in order to avoid contamination of the leak detector.

An independent control panel is located apart from the test equipment itself, where process data are displayed and saved on the plant's LAN.

2) Minimizing Production Lay-Out in Air Conditioning Manufacturing

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Minimizing Production Lay-Out in Air Conditioning Manufacturing
Minimizing Production Lay-Out in Air Conditioning Manufacturing

A high-production U.S. Unitary Air Conditioning manufacturer needed a system to evacuate and charge simultaneously two air conditioners on a single assembly line.  VTech 102-2 Automatic Dual Evacuation and Dual Refrigerant Charging System fullfilled the requirement, effectively doubling productivity without sacrificing floor space.

The VTech refrigerant charging systems can charge simultaneously R410a and R407c refrigerants with two independent evacuation and filling cycles. The same refrigerant (e.g. R410a) or two different refrigerants (R410a and R407c) can be charged at the same time. This system is ideal where small equipment footprint and flexibility are a consideration since it replaces two dedicated machines.

For more information please seePDF Newsletter (PDF)

3) Work Cell Manufacturing for Niche A/C products

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Work Cell Manufacturing for Niche A/C products
Work Cell Manufacturing for Niche A/C products

A US manufacturer of a wide range of temperature, humidity and air quality control systems for diverse OEM customers including retail, medical, military and aerospace installed a VTech 102 Automatic Evacuation and Dual Refrigerant Charging System.  As a “niche market” company, with hands in many smaller markets, they required a single system able to process units of varying size. The company’s production lay-out consists of independent work cells where virtually any of its products can be built. The VTech 102 is assembled on a self-contained roller cart, storing both of the refrigerant tanks, so it can be wheeled around to operate at any of the work stations.  Since VTech’s machines do not require compressed air, mobility around the plant is made easier.

From a process standpoint, using the VTech 102 achieved both areduction of pre-evacuation time (through the introduction of dual-sided compressor evacuation and the use of high-vacuum double-stage vane pumps), as well as quality improvement through high accuracy refrigerant charging.  What required 15 hours is now accomplished in 15 minutes! This also resulted in a lower level of residual moisture in the refrigeration circuit ensuring a higher efficiency of the unit and minimizing warranty failures on the field.

Category Product Capabilities
Leak Testing VTech 50 Pressure Decay Leak Test
VTech 75 Pressure Decay and Tracer Gas Leak Tests
VTech MasSpec Automatic Helium Outside-in Leak Test
VTech VacuTester Automatic Helium Inside-in Leak Test
VTech Punto.Leak Infrared Refrigerant Leak Test
Refrigerant Charging VTech 100 Evacuation and Charge of R410a and R407c Refrigerants
VTech 100PD Evacuation and Charge of HFC & HCFC Refrigerants with Pressure Decay Leak Test
VTech 102-2 Dual Evacuation and Charge of R410a and R407c Refrigerants
Pre-Evacuation Pre-Vac 10 Manual Pre-Evacuation System
Pre-Vac 90 Automatic Pre-Evacuation System
Data-Vac Vacuum Data Management System
Electrical Safety Test ST Series Electrical Safety Test System
Performance Test PT Series Performance Test System

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