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Figure  5-1.  Refrigerant  /low  diagram
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TM-5-4120-239-14 Refigeration Unit Mechanical Panel Mounted For Refrigerator Prefabricated Eletric Motor Driven KECO Model F10000R-6 NSN 4110-01-077-B203 Gasoline Engine Driven Manual
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Section   III. GENERAL   MAINTENANCE   INSTRUCTIONS
para 4-64 para 5-28 para 4-41 para 5-17 para 5-31 para 5-24 para 5-28 para 5-29 para 5-27 para 5-28 para 6-3 para 5-31 para 5-24 Para 6-3 para 6-8 para 4-50 para 4-54 para 4-34 para 4-35 para 4-44 para 4-48 para 4-33 para 5-17 para 4-61 para 5-17 para 5-21 para 4-51 para 4-54 para 4-61 para 4-51 para 4-12 5-5.   Troubleshooting   Chart by  a  list  of  probable   causes   of   the   trouble.   The Troubleshooting   procedures   for   direct   and   general corrective   action   recommended   is   described   op- support   maintenance   are   listed   in   table   5-1.   Each posite  the  probable  cause. trouble  symptom  or  malfunction  stated  is  followed Malfunction —  -— 1.   pressor  will  not  start, 2. 3. Compressor starts but goes out on overload. Little or no heating capacity. 4.  Insufficient  cooling. 5. Low suction pressure. 6.   Low discharge. 7.  Low  suction and  discharge pressure. a. b. C. d. e. f. a. b. a. b. c. d. e. f. a. b. c. d. e. f. g. a. b. c. a. b. a. b. Defective   starting   relay   or capacitor (single phase com- pressor). Defective phase sequence relay (three phase compressor). Defective high or low pressure cutout switch. Defective compresser motor or thermal protector. Defective compressor run capacitor (single phase com - pressor). Defective comprerssor. Loose electrical connections or faulty wiring. Defective temperature selector switch or mode selector switch. Defective  heaters. Defective  heater  high  tem- perature cut out switch. Defective heater relay. Defective evaporator fan motor. Low refrigerant charge. Dehydrator clogged. Pressure regulator valve defective. Air in refrigerant system, Thermal expansion valve defective. Defective solenoid valve. Defective quench thermal ex- pansion valve. Defective  thermal  expansion valve. Dehydrator  clogged  or  defective. Pressure regulating valve defective. Compressor not pumping due to defective  compressor. Defective  high-low  condenser  fan thermostatic  switch. Lack  of  refrigerant. Defective  thermal  expansion valve. a . b. c . d. e. f. a. b. a. b. c  . d. e. f. a. b. c. d. e. f . g. a. b. c. a. b. il. b. 5-3

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