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TECHNICAL MAINTENANCE
MAINTENANCE OPERATIONS.
Disconnect the fan from power supply prior to maintenance and servicing operations.
The technical maintenance includes periodic cleaning of the surfaces from accumulated dust and dirt. Use
a soft dry brush or a vacuum cleaner to remove dust. The impeller blades require thorough cleaning once in
6 months.
Connection sequence:
VKM/VKMz (Fig. 4, 5)
remove the screws 3 and take off the cover 2.
VC-VK (Fig. 6)
remove the screws 3 and pull out the electric motor-impeller block 4 with the fixing bracket 2.
VC-VN/VCz-VN (Fig. 7)
remove the screws 5 and pull out the electric motor-impeller block 3 with the fixing bracket 2.
VC-PN (Fig. 8)
remove the screws 3 and pull the fixing bracket 2 with the impeller 5 out of the casing.
VC-PK (Fig. 9)
remove the screws 5 and pull the fixing bracket 2 with the impeller 3 out of the casing 1.
Clean the impeller blades with a soft cloth wetted in mild water detergent solution. Avoid liquid dripping
on the motor.
STORAGE AND TRANSPORTATION REGULATIONS
Store the unit in the manufacturer's original packing box in a dry closed ventilated premise with
temperature range from +5 °C to + 40 °C. Storage environment must not contain aggressive vapours and
chemical mixtures provoking corrosion, insulation and sealing deformation.
The unit can be transported in the original packing by any mode of transport without limitation provided
proper protection against precipitation and mechanical damage.
Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
Follow the handling requirements applicable for the particular type of cargo.
Avoid sharp blows, scratches or rough handling during loading and unloading.
Do not expose the unit to sudden changes in temperature. Such changes can lead to condensation of
moisture inside the unit and performance disturbance when the unit is switched on. Prior to the initial power-
up after transportation at subzero temperatures allow the unit to warm up at room temperature for at least
2 hours.
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DISCONNECT THE UNIT FROM POWER MAINS PRIOR TO ANY
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28.04.2016 16:22:25
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