本窗口显示的是减压蒸发器的出口压力，其作用主要是维修和调整用。
Gas pressure: this window display exit pressure of reducer its function is maintain and adjustment.
化霜电磁阀安装在机台内，用于控制机台的冷凝压力，避免机台冷凝压力过低，造成蒸发器冰堵。
Thirdly, defrosting electromagnetic valve is arranged on the machine table, is used to control the machine condensing pressure, avoid machine low pressure evaporator condensate, causing ice jam.
如果蒸发器中制冷剂蒸汽的压力变得太低，这就意味着蒸发器太冷，可能开始结冰。
If the pressure of the refrigerant vapor in the evaporator gets too low, it means that the evaporator is getting too cold and may begin to ice up.
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