On 7/26/2023 pumped down units and started replacing expansion valves. Had to move product around to get to valves but after replacing pulled a deep vacuum and started working on the big cooler. In the big cooler I adjusted fan speed for one motor and got temp to start dropping as one of the fans was too slow...when small cooler done with vacuum I opened lines and started up unit, added 3 lbs. of 404 to leave op pressures at 71/290, verified temperature drop in Plano Texas.
Near Democracy Dr Plano, Texas 75024
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