Novenco ZerAx axial fan types AZL-AZN-AZW
– Installation and maintenance
5 of 30
2.3 Design conditions
The AZL-AZN-AZW fans are designed for operation at standard temperatures from -20 to
+50
°C. With reduced fan speed and increased blade clearance the temperature range can be
extended from -40 to +120
°C. Contact
Novenco for further information.
2.4 Transport and lifting
The fans are delivered on pallets or bearers to
allow for forklift transport.
Transport and lifting must be done with care,
as the fans are vulnerable to vibrations and
shocks. These can result in imbalance and
deformations.
Refer to the weights in the shipping papers,
on the motor and fan casing nameplates and
in appendix
on page 25.
Any transport or lifting of the fans must
be in accordance to current directives,
regulations and guidelines for safety.
Pay attention to limitations and direction for
use of lifting gear.
Verify that the fans and accessories are
undamaged upon receipt. Also, spin the
rotors by hand to see they rotate freely in the
fan casings.
Inform the carrier and Novenco
immediately of damages.
Further transport depends on the fan size and the fitted accessories.
Figure 1.
Lift of fan with
one strap
Figure 2.
Lift of fan with
two straps
Transport
•
Fans mounted on support frames
Transport and store these on pallets.
Leave in the transport rods for fans with
vibration dampers.
•
Fans without support frames
Transport fans resting on the inlet flanges
or cones. The rotors must point
downwards.
•
Large fans or fans with large motors
Transport and store these on pallets.
Store very large fans on suitable bearers.
Eyebolts on motors are unsuited for
lifting the fans.
Lifting
•
With straps – horizontal fans
Lift with a single strap around the fan
casing at the centre of gravity.
Avoid lifting fans in the flange holes.
Novenco recommends lift of fans with
straps.
•
With straps – vertical fans
Lift with two straps around the fan
casing. Support the fan to control the
rotation especially for horizontal fan
installations.
•
In flange holes – horizontal fans only
Lift in a minimum of three holes – two in
the outlet flange and one in the inlet. On
fans with inlet cones, remove the bolt in
the topmost position and use the hole as
the third point for lifting. Reinsert and
tighten the bolt once the fan is in place.
Deformation of the flanges must be
avoided.
