Normal or abnormal Cooling Motor runs Continuously
The motor-compressor can be run continuously and the unit can lead to normal or too much cold. Likely cause of the problem is a faulty motor control. He will not be cut at the correct temperature. Remember that there is a correlation rate%Wayne control cut-out point and the low side of the evaporating pressure. Control will not halt motors if his appointment is lower than the pressure boil.
Direct Expansion Systems (TEV)
In understated system can provide only enough refrigerant to fill the evaporator partially. It may be insufficient for operation temperature control cut-out point. As a consequence, they may be normal, refrigerating, but the device switches off. This trouble is specified by the way frost or sweat collects at the outlet pipe. If he reaches as far as the TEV sensitive lamp, there is a lack of refrigerant. Another indication of the refrigerant lack of warm liquid receiver and liquid line. The sight glass bubble show. The trouble may also be caused by inflated refrigerant or air condenser.
Leak expansion valve sometimes provide cooling. However, the pressure does not drop to the point where the engine control will switch off the motor. Incorrectly adjusted expansion valve may cause the same trouble, create a matte or sweating suction line. This will also result in higher than normal fluctuations lowr pressure.
Inefficient compressor another РџРћРЎРЎ'ble causes and can be verified with sensors. Expansion valve troubles and compressor trouble can be checked, as mentioned earlier in this Chapter.
Capillary Tube
If there is too much refrigerant, the excess will be collected on the low side. He can go to the suction line. This fluid can prevent the compressor production TDW enough pressure to control the thermostat. Thert ire, the device will operate continuously. It will produce key cooling effect or, more likely, excessive rtirigeration.
Slight lack of refrigerant will partially cooled condenser. Refrigerating part may not be close enough to the thermostat. Then it will not cause the thermostat to disable the engine...
Industrial