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12. DEVICE COMMISSIONING
Commissioning of the fan should be carried out by properly qualified personnel only. Before the
commissioning check the following:
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the fan for correct mounting,
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the electrical connection for correct execution according to electrical diagram,
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the enclosure for the presence of any foreign particles,
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the impeller for free rotation without rubbing the fan inlet funnel.
Turn the fan on for few seconds and observe the direction of rotation to check compliance of the fan
rotor rotation direction of with the direction indicated by arrow on the cover of the fan.
Once the above works are completed, turn the fan on and observe if there is no vibrations and
noise emitted by the impeller. Moreover, during the first commissioning of the fan it is advisable to
measure the starting current consumed by the motor. If the current is lower than the rated current,
the fan can be considered fit for further use.
If any problems and disturbances arise during the commissioning, switch the power off
and contact the supplier or the JUWENT service department.
13. REPAIR, MAINTENANCE AND WITHDRAWAL FROM USE
The fans are intended for continuous operation.
At least once a year check the condition of the fan motor (the motor bearings require no regular
lubrication) and, if necessary, remove the defects found according to the motor manufacturer
instructions.
Depending on the degree of air pollution, and no less than once a year, clean the fan impeller from
any dust and dirt.
Fan bodies in the lower part are equipped in the outflow holes. You should check and if necessary
clean above holes.
All maintenance and repair works should be carried out with voltage off.
Use of high-pressure washers is not admissible.
Once the device is withdrawn from use, handle it to a proper waste treatment plant