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• Check the tightness of the hermetic seals found in the central body of the rotor. Make sure it
does not come into contact with the rotor surface in a way that will damage it.
• Check the rotor bearing, heed warnings set forth in the manufacturer firm’s user manual.
• Verify that the rotary V belt has sufficient tension. Unlock the belt tightening joint for
adjustment, relock after adjusting to the required tension.
• Lengthening may occur in the V belt due to operating and environmental conditions. For this
reason, check belt tension after 350 hours of operation.
• Make electrical supply connections of the rotary drive motor by heeding the warnings in the
manufacturing firm's user manual. All provisions stated under the heading of 2. GENERAL SAFETY
must be applied during this procedure.
• Check the direction of rotation of the rotor against the label indicating the direction of rotation.
If the unit is rotating in the wrong direction, stop the unit and alter the directions of electrical
connections of the motor.
7.9.2 Maintenance
It is recommended that maintenance procedures be carried out every three months. These maintenance
procedures are of critical importance for both heating recovery efficiency and the total efficiency of the
system.
Periodical Maintenance of the Rotary Type Heat recovery Heat Exchanger:
• Check whether the heat exchanger conforms to hygiene standards, and check for
accumulated dust, corrosion, and damages.
• Check the tightness of the hermetic seals found in the central body of the rotor, and check
that it does not contact the rotor surface.
• Check fin surfaces, if there are any dents, straighten using
tweezers.
• Check belt tension (every 350 hours), readjust in case of loosening. If there is visible wear on
the belt, replace the belt.
• Check the rotary surface for shifting. Check the balance of the rotor.
• If there is a friction sound on the rotary bearing, replace it.
• Be sure to replace hermetic seals if there is wear on the seals.
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