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| EN
VEGA v2019.06
18.4. FAN
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Fan must be inspected and cleaned at least once a year.
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High-efficiency bearings are used in the motor. The bearings do not have to be lubricated during the entire operational period of the motor.
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Disconnect the fan from the unit.
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Carefully inspect the fan impeller for accumulated dust and other materials which could affect the balance of impeller. The misbalanced im
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peller can cause vibration and premature wear of motor bearings.
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Clean the impeller and the interior of casing using mild, non-aggressive and non-corrosive detergent and water.
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For cleaning the impeller do not use high-pressure devices, cleaners, sharp tools or aggressive solvents which could scratch or damage the
impeller.
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When cleaning the impeller, do not immerse the motor in a liquid.
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Ensure that balancing weights of the impeller are in appropriate position.
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Ensure that the casing does not block the impeller.
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Allow the impeller to dry before mounting the fan.
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Mount the fan back to the unit.
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If the fan does not switch on after the maintenance works, contact the manufacturer.
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x29
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Figure 18.4.1. VEGA 350 E, VEGA 700 E
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Figure 18.4.2. VEGA 1100 E/W
18.5. ELECTRICAL HEATER
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Electrical heaters do not require additional servicing.
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The heater has 2 thermal protections: automatic restore which is activated at +50°C and manual restore which is activated at +100°C.
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If the manual restore protection is activated, disconnect the unit from the power supply source. Wait until the heating elements cool down and
the fan rotation stops. Press the Reset button and start the unit.
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The unit doesn’t work without electrical heater.
It is necessary to choose and install electric heater according to the recommendations
(see “Selection of the power supply cable and safety device”)
