521 J PL 625
Plano , TX 75074

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Josh M.

Josh M.

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Completed monthly maintenance and filters PO-001906 On first floor liebert unit, it was frozen up, I thawed it out, performed a high pressure leak test. Found no leaks. I took thermal expansion valve apart and cleaned, blew it out with nitrogen, and put back together. I then pulled a vacuum on system and recharged unit accordingly with 407c and tested, unit is now working properly.