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Refrigeration compressors are leak tested to insure leak tightness of static and dynamic seals. Helium or helium gas mixtures are injected into the compressor at or above the system operating pressure for leak testing. For global tests the helium hard vacuum test method is the most common. For leak location helium sniffing is often used. For applicable products select a category below.
The following two leak testing methods are commonly used to leak test compressors.
Helium Vacuum: An automated method where the test part or test fixture is evacuated to full vacuum while helium is introduced to the opposite barrier of the part.
Helium Sniffing: A manual method of sniffing a pressurized part to detect helium escaping a leak.
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