A manufacturer of HVAC components and systems required an automated leak testing system for two unique A/C coil parts.
We engineered an automated turnkey leak test system utilizing the hard vacuum leak test method. By using a mixture of helium and nitrogen as a tracer gas, the customer used less helium. The leak test system achieved maximum efficiency, throughput, and flexibility through a custom-tooled, L-shaped test chamber.
| Industry: | Automotive & Transportation |
| Application: | Leak testing A/C coils |
| Production Volume: | Medium to high |
| Tracer gas: | Helium 95%, Nitrogen 5% |
| Controller System: | AB PLC |
| Leak Test Method: | Helium hard vacuum |
| Leak Rate: | 5.3 x 10-5 atmcc/sec Helium Nitrogen mix |
| Leak Reject Limit: | 5.6 x 10-5 atmcc/sec Helium |
| Throughput: | ~29 seconds per part |
| Cycle Time: | 50 seconds, including load/unload |
| Test Pressure: | 295 PSI on helium leak test, 550 PSI on proof test |
| Configuration: | Portable cart |
| Chamber: | Custom tooled “L” shaped vacuum test chamber |
| Leak Detector: | LDS3000 Mass Spectrometer |
| Pumping System: | Three-stage roots blower package |
