MU15864 0719
1
922950-0
GB
Contents
ZerAx
®
axial flow fan types AZL-AZN-AZW
Installation and maintenance
1.
Application
1.1 Reading guide
2.
Handling
2.1 Marking
2.2 Weights
2.3 Design conditions
2.4 Transport and lifting
3.
Storage
4.
Installation
4.1 Preparations
4.2 Installation
4.3 Support frames
4.4 Wire guard installation
4.5 Connection to duct
4.6 Electric connection
5.
Start of operation
5.1 Before startup
5.2 Motors with Y/
Δ
-start
5.3 Startup procedure
5.4 Air volumes for free inlet fans
6.
Maintenance
6.1 Before maintenance
6.2 Cleaning
6.3 Vibration levels
6.4 Fan casings
6.5 Rotors
6.6 Motors
6.7 Motor removal
6.8 Mounting of motor
6.9 Blade angle adjustment
7.
Troubleshooting
8.
Inspection and test
9.
Sound
10. Safety
11. Reference documentation
12. Disposal
13. Patents and trademarks
14. Quality management
15. Warranty
15.1 Rotor weldings
16. Spare parts
17. Classifications
18. Declaration of conformity
Appendices
A. Fan weights
B.
4-pole motor weights
C. Drawings – fan assembly
D. Wiring – motors up to 16 A
E.
Wiring – motors over 16 A
1. Application
The high performance axial flow fans
type AZL-AZN-AZW are for
applications within land-based
industries and marine sectors. All types
are for duct connection. The AZL type
has a free inlet and connects only to duct
on the outlet side.
1.1 Reading guide
Please read this complete guide, before
beginning installation and maintenance.
2. Handling
Avoid exposure of fans and
motor parts to shocks, as these
can result in imbalance and
deformations. Motor bearings and fan
components are vulnerable parts.
2.1 Marking
The AZL-AZN-AZW fans have
nameplates on the fans and motors.
Fan nameplate information
• Manufacturer information
• Product type, e.g. AZN 1000/350
• Serial no.
• Fan speed
• Year of manufacture
• Weight
Motor nameplate information
• Manufacturer information
• Power consumption and efficiency
• Voltages
• RPMs
• Weight
• Terminal connections
• Lubrication and service info.
2.2 Weights
The total weight depends on the fan size,
casing thickness, motor size and
accessories.
Refer to the Airbox program for further
information and weights of specific fan
solutions. See table 11 on page 11 for
max. weights of 4-pole motors.
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.
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 AZL-AZN-
AZW 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 “A. Fan
weights” on page 10.
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
transportation 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 the
transportation pallets. Store very
large fans on suitable bearers.
Lifting
•
With straps
Lift with a strap around the fan
casing at the centre of gravity.
Symbols
Description
Risk of damage to equipment
Risk of injury or death
Table 1.
Icons in guide
