Engine : Refrigeration AC - 649/610
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| As shown in the illustrated LP centrifugal chiller pressure maintenance system, what is its functional purpose? Illustration GS-RA-40 |
| A) maintain a relatively low compression ratio under low heat load conditions |
| B) prevent the entrance of air into the chiller under low heat load conditions |
| C) prevent the entrance of air into the chiller when the chiller is idle |
| D) prevent surging |
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