Exhausto BESF 146, Installation & Operating Manual

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6. Service & Maintenance
6.1 Cleaning Intervals
The ventilator is designed for prolonged use. It must be inspected and cleaned at least every 12
months. The need for cleaning is dependent on the type of application and how the ventilator is
operated.
6.2 Cleaning
Deposits should be removed from the impellers and the bottom of the ventilator:
1. Turn the fan off at the repair switch.
2. When the blower wheel no longer rotates, open the access door.
3. Clean the inside housing and the wheel with water containing a detergent.
4. Dry all parts with a cloth.
5. Close and secure the access door.
6. Turn the fan on.
If necessary, the blower wheel can be removed. Prior to removal, mark the position on the shaft. The
placement of the wheel is also shown on a label placed on the inside of the access door.
Do not remove the balancing weights on the impellers.
Vibration in the ventilator can be caused by a dirty impeller.
No other maintenance is required.
6.3 Service
Available spare parts are shown in Section 8.1 Parts Ordering, Page 12.
The motor has sealed and permanently lubricated bearings and requires no further maintenance.
Fig. 10