5
—27
5
Installation and assembly
Installation and electric works only by skilled and
qualified personnel and in accordance to health
and safety regulations!
5.1.
General
•
Before installing the fan assembly, check that it has not been damaged in transit, that there is no
deformation of the fan casing, that the impeller rotates freely, and that the fan and motor nameplate
data complies with the requirement of its use.
•
The fan unit must be installed on a level, solid and vibration free support
•
All lifting aids used during installation should be adequately certified to carry the weight of the
equipment being lifted.
•
Always wear appropriate protective clothing (including hard hats, eye protectors and ear defenders)
when working in the vicinity of the fan assembly.
•
During lifting of the fan all personnel must be clear of the area below the suspended fan.
•
Ensure that fan is not strained (static or dynamic), because it could cause damage of the impeller,
bearings due to deformation.
•
The component parts of the fan assembly must be fully aligned before being bolted together so that no
distortion or stress is placed on the equipment.
•
Appropriate fixings, with the correct torque applied must be used to secure the fan into position. The
final position of the fan must be strong and rigid enough to take the weight of the fan and any other
weight applied during installation.
•
The fan must be installed such that it is correctly positioned in accordance with the required airflow
direction. An airflow indication arrow is shown on the fan nameplate.
•
Before control of direction of rotation - Remove any foreign matter from the fan. - Rotate impeller by
hand to check free running. If the impeller contacts the inlet cone, loosen the inlet cone at the side /
bottom of the housing and reposition it to where a uniform gap is achieved between the inlet cone and
the
impeller
(particularly
important
for
centrifugal
type
fans).
- Install protection guard / finger protection (accessories) or give no access to impeller.
•
The characteristics of the fan can only be reached, if there are no components that cause turbulence in
the areas immediately in front and behind of fan. Sharp bends in the ductwork close to the fan must be
avoided.
•
If vibration isolators are used, flexible connectors and flexible electrical conduit should also be used.
The vibration isolators and flexible connectors must not be used to align fixing points that are clearly
misaligned. If any component parts do not easily fit together the cause must be investigated and
rectified.
•
The motor may only be connected to the power mains after the fan is fully installed. To connect the
motor to the power supply line, refer to the diagram in the terminal box and the instructions of the
motor manufacturer
•
Ensure that the cooling system of the motor is not obstructed in any way. For details, refer to the
instructions of the motor.
•
The fan cables must be mechanically protected and tension-released.
