Huawei OptiX OSN 3500 Routine Maintenance page 20

Clean the air filter once every two weeks.

Procedures :

Pull out the filter
1.
peel off the sponge stuck on the filter
2.
clean it with water
3.
dry it in a ventilated place(Never insert any wet air filter into the
4.
equipment)
stick the sponge again on the air filter
5.
insert the filter by gently pushing the air filter along
6.
Clean the air filter of the Fan
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