Gree U-MATCH GUHD09NK3CO - Page 174

A/A DC INVERTER U-MATCH AIR CONDITIONERS MAINTENANCE
171
3 拆除电子膨胀阀
A．用气焊加热电子膨胀
阀两端连接管路后拔离电
子膨胀阀组件
B．焊接时要充氮保护，
氮气压力为 0.5±0.1kgf/c
㎡（相对压力）
C．加热时注意，以防周
围物料因高温烧毁
4 移开电子膨胀阀
将旧的电子膨胀阀组件移
开
5 移上新的电子膨胀阀
组件与系统管路相连
A．用气焊焊接电子膨胀
阀组件
b. During the welding,
nitrogen should be inflated
and its pressure should be
0.5±0.1kgf/c
㎡ (relative
pressure)
c. Attention should be
taken during the heating to
avoid the surrounding
objects burnt due to the
high temperature.
6Establish vacuum
inside the system
through liquid valve.
● Establish vacuum
inside the system
through liquid valve.