6
Novenco
®
jet fan types AUO/ARO - ARP/AUZ - AUT/ART - AZT
08.
AUZ and AZT:
Check that the motor
shaft is centred in the fan casing,
before tightening the bolts items 14.
3.
Mount the rotor item 07 on the motor
shaft by means of a jack fastened in
the threaded hole of the motor shaft.
Press the rotor hub to contact against
the motor shaft collar.
Leave out use of hammers or
similar, as the motor bearings
are sensitive to shocks.
Check that the blade tip clearance is
the same throughout the
circumference. Adjust the motor
position in the suspension
arrangement if needed.
4.
Connect the cable between motor
and terminal box. Use same routing
as from the factory.
5. AUO-AUT/ART:
Mount hub cap
item 06, centre screw item 04 and
centre disc item 05 and tighten.
AUZ and AZT:
Mount the centre disc
item 05, centre bolt item 13, hub cap
item 06 and screws items 04 and
tighten.
6. ARO-ARP:
Mount guide vane
arrangement item 11 by means of ten
blind rivets ø3.2 × 10 (monel metal).
ARO 500:
Use ten blind rivets ø4 × 10
(monel metal).
7. AUO/ARO:
Mount silencers items 03
to fan casing by means of set screws
item 02.
ARP/AUZ:
Mount silencers items 03
together with the suspension
brackets to the fan casing by means of
set screws item 02.
AUT/ART:
Mount wire guards
(figure 11, item 11).
AZT:
Mount the outlet cone, fit the
hose clamp and tighten both pairs of
nuts and bolts to hold the cone.
Mount the wire guard on the inlet.
8.
Lift the fan back into position.
AUO/ARO-ARP/AUZ-AUT/ART:
Mount four expansion bolts item 01,
nuts and tighten.
AZT:
Mount fasteners through the
fan top plate and the ceiling mounted
base plate. Adjust the outlet cone for
correct directional thrust. Tighten
nuts and bolts on the hose clamp to
secure the cone.
9.
Connect the supply cable to the
terminals (figure 11, item 06).
To start the fan, follow the procedure
described in section 6.
6.8 Blade angle adjustment
The blade angle has been adjusted in the
factory with a mounting fixture to
deliver the performance required. Do
not change the blade angle without
previous agreement with Novenco.
7. Troubleshooting
In case of breakdowns, complete the
following checklists, before calling for
service.
Lacking performance
•
Inlet or outlet blocked
•
Auxiliary fans stopped
•
Motor defective
•
Motor disconnected
•
Electric connection defective
•
Wrong direction of rotation
Noise and vibrations
•
Motor bearings defective
•
Rotor in imbalance
•
Rotor worn or damaged
•
Loose components
•
Rotor blades with different angles
(loose blades).
•
Fan operates in the stalling area,
which may result in breakdown.
Correct errors – see “
8. Inspection and test
Extent of inspection
•
Measure power consumption at full
and half speeds
•
Vibration measuring on fan casing
(outside motor)
•
Check of fan suspension
•
Visual inspection of rotor, casing,
silencers and electric connection
•
Cleaning
- Internal with compressed air or
vacuum cleaning
- External with a wrung cloth. No
water must get in the electric
systems or the acoustic
insulation.
Keep a journal of all measured values
and observations for each fan.
9. Sound
The fan sound emission depends on
installation and operating conditions,
hence no general data can be given.
Refer to the product catalogue and the
technical fan specifications.
10. Safety
The jet fans must be installed according
to Novenco
’s and the current safety
regulations. At a minimum these include
EN 13850.
It is recommended to review and revise
safety procedures regularly.
Safety check
•
Test if safety procedures and the
installation work correctly.
•
Check if safety regulations have
been changed and if the installation
needs revising.
•
Consider taking additional
measures to improve the safety of
the installation. For example, by
mounting wire guards on inlet and
outlet.
11. Reference documentation
Please refer to the below documents on
the Novenco website for further
information about the fans.
•
Catalogue
Car park jet fans, standard and hot
smoke
•
Data sheets, drawings, certificates
and declarations of performance
for
AUZ-ARP 340
AUT-ART 400
AUO-ARO 290-380-500
AZT 280-355-450
•
Technical specifications
12. Disposal
Dispose of fans suitable for scrapping in
environmentally safe ways and in
accordance to current regulations.
The fans and especially the electric
motors contain a wide range of
materials, which can all be recycled.
Make sure worn-out motors and fan
Sizes
Torques [Nm]
Motor fastening
(items 08 and 14)
Rotor fastening
(items 04 and 13)
M6
9.4
6
M8
23
12
M10
45
20
M12
78
20
M16
190
25
M20
370
25
Table 7.
Motor and rotor fastening
torques
