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Download e-book for kindle: Refrigeration and Air Conditioning 4 (Equipment Cooling) by United States Army Combined Arms Support Command

By United States Army Combined Arms Support Command

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Additional resources for Refrigeration and Air Conditioning 4 (Equipment Cooling)

Sample text

Per minute with the discharge shutoff valve frontseated indicate? (Sec. 4, Par. 15) 41. How are valve plates removed from cylinder decks? (Sec. 4, Par. 18) 48. What will cause a humming sound from the compressor motor? (Sec. 4, Par. 36) 49. The contacts of the starting relay are normally _________________. (Sec. 4, Par. 38) 24 50. What causes the contacts of the starting relay to open? (Sec. 4, Par. 38) 57. A loose feeler bulb for a thermostatic expansion valve will cause an abnormally cold suction line.

What will occur within the system when heat is not supplied to the generator? (Sec. 5, Par. 5) 4. (Agree)(Disagree) The heat exchanger heats the strong solution. (Sec. 5, Par. 5) 7. What will occur if the feeler bulb of the concentration limit thermostat is broken? (Sec. 5, Par. 8) 8. The plant operator submits the following complaint: (1) The chill water temperature is 57° F. ) (2) The off-run-start switch is in the RUN position. g. What has occurred within the system to cause a shutdown? How do you restart the unit?

29. Halide Leak Detector Test. The procedures for testing with the halide leak detector are as follows: (1) Make sure that all valves are closed except the vapor condensate valve. g. Use the refrigerant type charging valve on the absorber. Read the charging pressure in the machine on the solution pump pressure gauge. g. with nitrogen, using the procedure previously given under Extended shutdown. (4) Test the machine for leaks with a halide leak detector. Stop all the leaks that are found. (5) Perform another vacuum test to determine that the machine is now satisfactory.

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Refrigeration and Air Conditioning 4 (Equipment Cooling) by United States Army Combined Arms Support Command


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