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(3) Maintenance of fan motor
● Please protect this product so that neither oil nor dust may adhere.
● Please execute the maintenance of fan motor once a year.
(4) Maintenance of dust filter
● This device has a structure to attach a dust filter to the inlet of the fan motor.
● At least once a year is encouraged to replace a dust filter.
Warning● Please do not continue to use the dirty dust filter.
May cause unexpected failures.