GLEB Kitchen exhaust fan
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7.2.3 Checking the motor bearings
If the standard fan is used also in the normal ventilation, after 40000 hours of operation the fan is
to be checked twice a year (motor exchange is recommended).
For HT-version of the fan, it is recommended to change the motor every three years.
7.2.4 Cleaning the impeller
The maximum permissible vibration level measured from the motor bearing is 7,1 mm/s RMS.
The impeller can be cleaned using a vacuum cleaner, compressed air or by brushing. If the
impeller is coated with greasy dirt, it can be washed with a detergent or a solvent. The cleaning is
done if necessary, but a control inspection should be done at least once a year. Badly tarnished
impeller will result in lower efficiency of the fan and increases energy consumption.
7.2.5 Cleaning the fan casing
The inside of fan the casing can be cleaned same way as the impeller.
