Quantcast TESTING - TM-5-4120-375-14_220

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REMOVAL - TM-5-4120-375-14_219
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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_221
TM-4120-375-14 THERMAL EXPANSION VALVE (CONT.) LOCATION/ITEM ACTION REMARKS TESTING Note position of bulb position. 3. Thermal  Expansion  Valve a. NOTE on removal and be sure to replace it in the same Cut insulation clamps.  Loosen remove sensing Testing  Thermal  Expansion  Valve operating  and  supplying  cooling b. With the NOTE is to air. away from sensing bulb and band screw from band clamps, and bulb . be done while air conditioner is air  conditioner  stopped,  let  the  suction line warm up to ambient temperature. c. Remove the sensing bulb from its location against the suction line,   and place it in a container of ice water or crushed ice (32 F or 0 C). CAUTION Do not let liquid refrigerant flood back into the compressor any longer than 1-2 seconds. The expansion valve will be wide open during the following procedure. Excessive flood-back of liquid refrigerant will damage the compressor. d. Start the air conditioner by setting the rotary selector switch at COOL, and the temperature control  thermostat  at  maximum  DECREASE. Remove the sensing bulb from the ice water, and hold it in one hand to warm it while feeling the suction line. If the suction line temperature drops, the valve is operating properly. stop the air conditioner at once, and re-install the sensing  bulb. e. If the temperature of the suction line does not drop, stop the air conditioner and replace the expansion valve. 5-52

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