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8. MAINTENANCE AND REPAIRS
8.1. SAFETY PRECAUTIONS
Maintenance personnel will be faced with danger of personal (fatal) injury if these precautions
are not complied with.
Maintenance and repairs may be carried out only by technically qualified personnel, whereby this manual and
the applicable specifications must be adhered to.
Take note of the following before maintenance work can begin on the fan unit:
All drive motor poles must be detached from the power supply!
The impeller must come to a complete stop!
Check the temperature of the fan unit's exterior to prevent fire!
Make sure that an uncontrolled start-up of the fan unit maintenance is impossible
(such as with a lockable work switch)!
Before beginning maintenance work, remove any damaging or dangerous rests which are in the fan unit as a result
of the medium, making sure to use the proper tools!
Assembly takes place in the reverse order of disassembly. For all bolt connections, it is necessary
to use a torque wrench, besides the usual locking agents (spring washers, etc.).
Reimplementation of the fan unit may only occur after all safety checks have been made in compliance with
chapter 7.
This excludes operations which may only be carried out when the fan unit is in operation, such as vibration
measurements. In these cases, the applicable safety and accident-prevention guidelines must still be adhered to.
8.2. MAINTENANCE ADVICE
Depending on the surroundings, we advise:
1st check 1 month after implementation, followed by preventative maintenance after a maximum of 6 months.
8.3. MOTOR / IMPELLER
If wear or soiling of the motor or impeller can be expected as a result of the medium used (i.e. corrosion, tears,
caking), the unit must be inspected and cleaned. Under normal conditions, the bearings have a life expectancy
of 40.000 hours. Replacement of the complete EC fan/motor unit must occur in consultation with the supplier.
Never use a high-pressure cleaner (steam cleaner) or pressurised air to clean the motor!
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