2
NovAx™
axial flow fan types ACN-ACW ATEX and ACW EX
2.4 Transport and lifting
Any transport or lifting of the
fans must be in accordance to
current directives and
guidelines for safety. Pay attention to
limitations and direction for use of the
lifting gear.
The axial flow fan types ACN-ACW
ATEX and ACW EX 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 or fan casing
nameplate and in appendix “A. Fan
weights”.
Check the fans and the blade
clearance upon receipt. Inform
the carrier and Novenco
immediately of damages.
Further transport depends on the fan
size and the fitted accessories.
Transport
•
Fans mounted on support frames
Transport and store these on the
transportation pallets. Leave in the
safety 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 and fans with large
motors
Transport and store these on the
transportation pallets. Store very
large fans on suitable bearers.
Lifting
•
With straps
Lift a fan with a strap around the
fan casing at the centre of gravity.
Please note, that directives and
guidelines may dictate lifting in the
flange holes.
Lifting with straps is the approach
recommended by Novenco.
•
In flange holes
Lift in a minimum of three holes –
two in the outlet flange and one in
the inlet. On fans with inlet cones
mounted, remove the bolt in the
topmost position to 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.
Do not use eyebolts on motors
for lifting.
3. Storage
Correct storage conditions are important
for the function and durability of the
fans.
Damages that are due to
incorrect storage void the
warranty.
4. Installation
4.1 Preparations
Complete the below checklist to ensure a
safe work environment and fan
functionality.
Checklist prior to installation
• Unpack the fan.
• Check that the rotor rotates freely in
the fan casing with equal blade tip
distances to the casing around the
circumference.
• For outdoor installations, make
sure the installation location is
sheltered. Fans, motors and
frequency converters must be
installed so they are protected from
rain or water that drips.
• Ground the fan before installation
to avoid static electricity. For
example, by assembly on non-
conducting vibration dampers and
foundations.
• Clear the fan installation location to
ensure free and unimpeded
airflows through the inlet and
outlet. Optimum airflow from all
sides removes risk of stall, gives
best performance and keeps sound
levels down.
See section “4.4 Connection to
duct” for minimum distances for
undisturbed airflow.
• Remove potential hazards for
explosions in the installation
location. No explosion hazards
may be present.
• Secure the installation to at least
IP20, i.e. protect the fan against
foreign particles with wire guards
and filters before and after the fan.
Wire guards must be installed at
least 120 mm before and after the
fan in the indicated positions.
• Duct installation, i.e. connection of
the fan with the flanges cannot be
considered completely air tight or
leak proof. If the inside of an ATEX
fan casing is a Zone 1 atmosphere,
the outside is Zone 2 with
requirements that match.
The vibration level of the
installation depends on how the
fans are installed, the
operational conditions and the natural
frequency of the foundation and
supports.
Figure 1.
Lift of fan with a strap
Conditions Specifications
Comments
Outdoor
One month
• Packing must be intact
Indoor or
sheltered
Max. six
months
• For unprotected fans
with no or broken
packing
• Ventilated location
• No condensation
Prolonged Max. two years
• Indoor
• Remove packing
• Ventilated location
• No condensation
• Turn rotor 20 times
every six months
• Add additional anti-
corrosive coating on
motor shaft
• Change motor ball
bearings after two
years of storage
Vibrations No
• Location must be
vibration free.
Tempera-
tures
5 to 40 °C
• Constant
temperature,
preferably 20 °C
• Ventilated
• No condensation
Humidity
Below 50%
• Avoid condensation
• Exceedance requires
airtight packing, with
silica gel, of the
complete fan.
Table 2.
Storage recommendations
