NOVENCO ARO 290, Руководство по установке и обслуживанию

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Novenco
®
jet fan types AUO/ARO - ARP/AUZ - AUT/ART - AZT 3
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.
Transport
• Jet fans on pallets
Transport and store these on
pallets.
• Jet fans bolted together with
transport brackets
Transport and store these as
received, i.e. on the pallets and
bolted together with the brackets.
Lifting
• Lift in eyebolts fitted in the
suspension brackets
Preferably, fit four eyebolts
(optional accessory) in a square
configuration in the suspension
brackets on top of the fan casing.
AZT:
Remove the base plate on top
of the fan casing, if this is mounted,
to access the mounting plate. Use a
strap through the two large holes in
the plate. These are at the fan centre
of gravity.
3. Storage
Correct storage is important for the
function and durability of the fans.
Damages due to incorrect
storage void the warranty.
4. Installation
4.1 Preparations
Complete the below tasks to ensure a
safe work environment and fan
functionality.
Before installation
• Unpack the fan with care.
• Check that the rotor rotates freely in
the fan casing with equal blade tip
distances to the casing around the
circumference.
• Ground the fan before installation
to avoid static electricity. For
example, by assembly on non-
conductive mats.
• 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.
• Secure the installation to at least
IP20, i.e. protect people and
surroundings against solid objects
up to 12 mm.
Also, install wire guards on fans
where there is direct access to the
rotor. Wire guards from Novenco
can be installed as close as 120 mm
before and after the rotor.
• AZT: Release the fan for installation
by removal of the screws that secure
it to the transport brackets. Save the
screws and reinsert them in the
corresponding holes in the casing
after installation.
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.
Follow the below guidelines to avoid
resonance.
• Soft suspension: Fan is fixated
through springs or dampers.
The natural frequency [Hz] of
the system should be at least 20%
below fan speed.
Soft suspensions are available
from Novenco.
• Stiff suspension: Fan is fastened
to a duct or a hard surface. The
natural frequency of this system
should be at least 20% above fan
speed.
• Elastic structure: Fan is fastened
to an elastic structure. The
natural system frequency
should be at least 20% higher or
lower than fan speed.
The owner is responsible for
compliance with the above
requirements. Non-compliance affects
the product warranty.
4.2 Installation
Jet fans that are installed within
smoke reservoirs must be
fastened to non-flammable
materials only, which must meet
current national requirements. In
general, the jet fans must be mounted
so that there is no risk of them falling
down in case of fire.
The jet fans must be fixed to a
horizontal plane with a natural
frequency at least 20% from the
fan speed.
Installation of fans
1. Verify the installation location and
check the distances to nearby
obstructions. See figures 1 and 2
below.
• On the inlet side, the jet fans
require a free field of at least
0.5 m.
• On the outlet side,
unidirectional jet fans require a
free field of at least 2 m.
• For reversible fans there must be
a free field of 2 m on either side.
Notice: Arrows on the fans indicate
the airflow direction and
rotor rotation.
Conditions Specifications Comments
Outdoor One month • Packaging must be intact
Indoor or
sheltered
Max. six
months
• For unprotected fans
with no or broken
packaging
• Ventilated location
• No condensation
Prolonged Max.
two years
• Indoor
• Remove packaging
• 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
-20 to 55 °C
• Constant temperature,
preferably 20 °C
• Ventilated
• No condensation
Table 4. Storage recommendations
Humidity Below 70%
• Avoid condensation
• Exceedance requires
airtight packaging of
complete fan and use of
a moisture absorbent
agent such as silica gel
Conditions Specifications Comments
Table 4. Storage recommendations