空气过滤器滤网、引风机消声器的消声海绵要定期清洗或更换。
The anti-noise sponges inside the screen of the air filter and the muffler of the induced draft fan should be cleaned or changed regularly.
过滤器初次运行或清洗后投入运行时，必须在滤网上均匀地用油浇淋。
Filter first running after cleaning or put into operation, must be in mesh evenly oil pouring rain.
过滤器的过滤网一年至少要维护两次。
The strainer screen should be serviced at least twice a year.
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