To replace relief valve disc, hold the upper guide fin and unscrew the diaphragm pressure plate.

要更换安全阀阀瓣, 握住上部引导翼,旋下隔膜压力板上的螺丝.

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For example : R 1 service door upper guide and door latch on doorframe is worn.

R1 服务门上导轨和门框的门闩陈旧并且磨损.

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