冷却系应定期进行清洗，以防锈蚀和水垢过量沉积。

The cooling system should be cleaned at periodic intervals to prevent the accumulation of excessive rusts and scale.

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去掉氧化皮，装配过程中零件表面涂上油，以防锈蚀。

Remove scale, in the process of assembly parts surface oil, in case of rust.

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如果是新设备，在新设备的隔膜室中装有测试液以防锈蚀。

In case of new equipment, testing liquid is supplied in its membrane room to prevent.

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