@refrigerationmentor: What do you think causes a Copeland scroll compressor to try to run backward after it shuts off? Inside many Copeland scroll compressors is a disc-type check valve that closes when discharge gas pushes back on shutdown. This prevents the scroll set from reversing, which can lead to long-term issues if it happens repeatedly. Understanding how migration affects this valve helps technicians stay ahead of potential failures. • What the disc-type check valve does • How discharge pressure forces it closed • Why reverse rotation is harmful • Why the valve is not a perfect seal • How this applies to advanced service and supermarket training Clear understanding of component function leads to better troubleshooting and stronger technician performance. 👉 Follow us and check the link in our bio to join the Refrigeration Mentor community where our team of technical specialists help uplift technicians and the refrigeration industry. #RefrigerationMentor #refrigeration #co2 #gonatrefs #hvacr #commercialrefrigeration #supermarketrefrigeration

Trevor Matthews

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Region: CA

Tuesday 02 December 2025 17:06:43 GMT