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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
Check the following:
-
correctness and leak tightness of water pipe connections
,
- electric connections, in accordance with electric diagrams
5.7 Cross-flow and counter-flow heat exchangers
Check the following:
- condition of exchanger's lamellas (contamination, mechanical damages),
- operation of a damper assembled in the plate exchanger section,
- check if the droplet eliminator is firmly attached and if its position with regard to air-flow direction is
correct,
- in AHUs with the droplet eliminator on the fan's pressing side check the size (H, fig.16), assembly
of the siphon as well as passability of the condensate drainage system,
- before starting up the AHU, fill the siphon with water.
5.8 Rotary exchanger
Before starting up the exchanger, check the following:
- after removing the wedge-shaped belt - if the motor's rotor rotates freely,
- distance between the rotor and casing and adjust the sealing brushes, if needed,
- electric connections,
- if the cleaning air-lock is installed on the side of the supply-air duct,
- once the drive belt is assembled and the exchanger is turned on, make sure that direction of rotor's
rotations led from exhaust-air ducts, through the cleaning air-lock and to the supply-air ducts (fig.
22).
VS 21-300:
VS 400-650:
Fig.22. Direction of rotary regenerator rotations
5.9 Fan unit
Check if:
- there are no objects within a range of the fan, which might be sucked into the rotor once the fan is
turned on,
- the fan's rotor rotates freely, without any friction against the casing elements,
- the motor is properly positioned and the system as well as operation conditions comply with data
shown on the rating plate (supply voltage, current, frequency, winding connections),
Supply
Exhaust
