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adjustment - TM-5-4120-375-14_221
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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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ADJUSTMENT - TM-5-4120-375-14_223
TM5-4120-375-14 THERMAL EXPANSION VALVE (CONT.) LOCATION/ITEM ACTION REMARKS ADJUSTMENT 4. Thermal  Expansion  Valve b. c. d. e. f. Remove insulation from a spot on the suction line near the sensing bulb of the thermal expansion valve to be adjusted. Install an accurate thermometer or the probe of a thermocouple on the bare spot, using a small gob of thermal mastic, if available, to  improve  conduct- ivity. Tape  the  thermometer  bulb  or  thermocouple junction in position,   and cover with insulating material. Connect a suitable pressure gauge to the suction service valve,   and open the valve. Operate the air conditioner in the cooling mode for about 30 minutes,   observing  the  thermometer  or thermocouple  dial  to  see  that  the  temperature  has stabilized. When  the  temperature  remains  unchanged for at least two minutes,   record  the  temperature  and pressure. Compare  the  recorded  temperature  and  pressure  with those in Table  5-3. Each  expansion  valve  should register higher than the values in the Table by the following amount. a. Thermal  expansion  valve: 6+1.5 F or 3.3 + 0.8C. b. Quench valve: 30.4 + 0.5 F or 16.7 + 0.3 C 5-54

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