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238. During operating periods of a multi-box refrigeration system using a capacity-controlled compressor, when all of the evaporators of a four box plant are actively being fed with liquid refrigerant, the control oil pressure acting on the hydraulic relay piston shown in the illustration will be at what value
With all evaporators active, the compressor operates at full capacity, requiring maximum control oil pressure to fully load all cylinders and maintain that state.
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