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Technical information Industrial Adjusting Thermostatic Expansion Valves

Adjusting The Thermostatic Valves

The sensor element thermostatic expansion valve must be fitted on the suction line. This is done at the point where it attaches to the evaporator. You can make the bench valve adjustment. In the service thermostatic expansion valve can be adjusted as follows:

With refrigeration condensing unit operating, note the temperature of the evaporator.

  • If the evaporator is too warm, configured to allow more of the refrigerant in the evaporator.
  • If the suction line frosts, adjusting the controls to reduce the flow of refrigerant. Most technicians adjust the thermostatic valves according MSS (minimum stable signal) point. The volume of overheating properly taken care of this setting.
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