Quantcast Table 5-2. NORMAL   TEMPERATURE-PRESSURE   RELATIONSHIPS

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COMPRESSOR FAILS TO START - TM-5-4120-375-14_172
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TM-5-4120-375-14 Air Conditioner Horizontal Compact 18 000 BTU 208 Volt 3 Phase 50/60 Hertz NSN
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COMPRESSOR RUNS BUT DOES NOT COOL
5-5 TM5-4120-375-14 Table 5-2. NORMAL   TEMPERATURE-PRESSURE   RELATIONSHIPS 95 F (36 C) dry bulb return air to unit . Outdoor  ambient 50F temperature 10c 75F 24C 100F 11OF 38C 4.35C 125F 52C Gauge  Pressures Suction (psig) 58-65 58-70 60-75 62-72 65-75 (Kg/Cm  2) 4.1-4.6 4.1-4.9 4.2-5.3 4.4-5.1 4.6-5.3 Discharge  (psig) 120-155 170-205 250-290 300-390 3’70-410 (Kg/Cm 2) 8.4-10.9 11  .9-14.4 17.6-20.4 21  .1-2.4 26.0-28.8 ----------------------------------------------------------------------------- NOTE Dry  bulb  temperatures  are  measured  with  an  ordinary  thermometer If pressures are too low, check for leaks and add refrigerant: if too high, bleed off refrigerant until pressure is normal. Step  3. Pressure  reset  button  on  pressure  switch. Test  pressure  switch  in  accordance  with paragraphs  5-19  thru  5-24. CAUTION Do  not  exceed  12-second  operating  time,  or  vacuum  may  be formed in suction side of refrigeration system  and damage compressor. Bleed  off  refrigerant  slowly,  over  a  period  of about one hour, to prevent oil being blown out of system, then  replace  faulty  pressure  cutout  switch  and  recharge  system. WARNING Be careful when working with high voltage. Failure to comply can result in serious injury or death.

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