24 | EN SMARTY v2023.2
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
CAUTION: the heat exchanger cannot be used when the lters are removed!
6.6. FAN MAINTENANCE
• Fan maintenance should be performed by experienced and trained sta only.
• The fan should be inspected and cleaned at least once per year.
• Observe sta safety regulations during the maintenance and repair works.
• 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. An excessive imbalance may lead to
accelerated wear on the motor bearings and cause vibration.
• Clean the impeller and inside the housing with a mild detergent and a damp soft cloth.
• Do not use high-pressure cleaners, abrasive materials and sharp tools or caustic solvents that may scratch or damage the housing and impeller.
• Do not plunge the motor in any uid while cleaning the impeller. Make sure the impeller’s balance weights are in place.
• Make sure the impeller is free of any obstacles.
• Install the fan back into the unit. Connect fan power and control signals.
• In case the fan does not automatically start up or stop after maintenance, contact the manufacturer. The malfunction of the fan can be identied
by the pressure in the system (when pressure switches are connected). In case of any fault in the fan motor, a notice will appear on the control
panel.
Prior to commencing any maintenance or repair works, make sure the unit 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):
• Remove the fans connectors from the control board or fan housing. Supply air fan connects to control board's X15, X2, X4 connectors. Extract air
fan connects to control board's X16, X2, X4 connectors. Smarty 4X V F2 fans can be disconnected by unplugging X32, X33 connectors located
on the fans housing.
NOTE:
• X2 and X4 are the same for both fans.
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