Vapor Injection Valve Replacement

注意 In most cases, only the coil requires replacement. No other repair is possible on solenoid valves.

Removal

Recover the refrigerant charge from the unit.
Turn the Unit On/Off switch Off. Disconnect electrical connections to valve coil.
Unsolder liquid line connections to the valve.
Remove the valve from the unit.

Clean the tubes for soldering.
- 设备损坏
- 应使用散热片或用湿布裹住开关，以防损坏新开关。
Place the new valve in position and solder the liquid line connections.
Pressurize the refrigeration system and check for leaks (Refer to 制冷系统泄漏测试). Repair leak if required.
Recover the refrigerant used for the leak test if no leaks were found.
Evacuate the system (Refer to 制冷系统的排放和清洁).
Recharge the unit with R-404A/R-452A (Refer to 为设备注入制冷剂).
Recharge the unit with R-134a/R-513A (Refer to 为设备注入制冷剂).
Perform a controller pretrip test to verify system operation.