24 | EN SMARTY v2023.1
Figure 6.5.3. Smarty 3X P / 4X P Figure 6.5.4. Smarty 3X P E / 4X P E
Figure 6.5.5. Smarty 2X V Figure 6.5.6. Smarty 3X V / 4X V
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6.6. FAN MAINTENANCE
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• The fan should be inspected and cleaned at least once per year.
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• The fans features a heavy-duty ball bearing design. The motor is completely sealed and free of maintenance.
• Detach the fan from the unit.
• The impeller should be particularly checked for built-up material or debris that may cause an imbalance. Excessive imbalance may lead to ac-
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• Do not use high-pressure cleaner, abrasives, sharp tools or caustic solvents that may scratch or damage the housing and impeller.
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• Make sure the impeller is free of any obstacles.
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Prior to commencing any maintenance or repairs, make sure the ventilation units is disconnected from the power source.
SMARTY XP (version 1.1 / 1.2):
• Remove the fan connectors from the control board. Supply air fan connects to X15, X2, X4 connectors. Extract air fan connects to X16, X2, X4
connectors.
SMARTY XV (version 1.1 / 1.2):
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on the fans housing.
NOTE:
• X2 and X4 are the same for both fans.