MU 14309 0410
1
918768-0
GB
Installation and maintenance
for Novax fan type ACL
1. Application
2. Handling
2.1 Marking
2.2 Weight
2.3 Transport
3. Storage
4. Installation
4.1 Preparation
4.2 Installing the fan
4.3 Installing the acoustic diffuser (op-
tional)
4.4 Duct connection (alternative)
4.5 Electrical connection
5. Start-up
5.1 Before start-up
5.2 Motors with
Δ
/Y starter
5.3 Start-up procedure
6. Maintenance
6.1 Safeguards prior to inspection and
maintenance
6.2 Fan housing
6.3 Impeller
6.4 Motor
6.5 Detaching the motor
6.6 Fitting the motor
6.7 Blade adjustment
6.8 Fault finding
7. Testing functionality and
operational readiness
7.1 Periodic inspection
8. Sound
9. Declaration of conformity
1. Application
Novax ACL fans are compact, sturdy ax-
ial flow fans. They are designed for re-
placing existing fans for energy-saving
reasons. The fans are capable of meeting
everyday ventilation requirements un-
der normal conditions in all types of
commercial and industrial buildings.
Please read the relevant sections of these
instructions carefully before installing
the product or performing any mainte-
nance.
2. Handling
2.1 Marking
ACL fans are equipped with nameplate,
stating Novenco’s name and address
and providing information on product
type, e.g. ACL 710/380, serial or order
number, and fan speed.
A motor nameplate with relevant motor
data, including insulation class, is also
provided.
2.2 Weight
The total weights of ACL axial flow fans
are shown in table 1.
2.3 Transport
During transport, care must be taken to
prevent water (e.g. rainwater) from en-
tering the motor or other sensitive com-
ponents.
Novax ACL fans are supplied on pallets
or skids, enabling fork-lift transport. The
forks must be positioned beneath the
base. The unit must be set down as slow-
ly as possible on a soft surface. Impacts,
vibrations and falls may cause imbal-
ance and deformation or damage to mo-
tor bearings.
3. Storage
Novax fans can withstand outdoor stor-
age for up to one month providing the
packaging is intact. After removing the
packaging, fans must be stored in a rain-
proof shelter.
If stored indoors under well-ventilated
conditions with no risk of condensation,
storage duration may be extended to six
months.
The storage place must not be exposed to
vibrations, which may damage the mo-
tor bearings. If stored for longer than
three months, the impeller should be
turned regularly by hand.
4. Installation
Before installing the ACL fan in the ven-
tilation system, a suitable location must
be identified and prepared. This will in-
clude removing the existing fan and clos-
ing off any holes capable of allowing
false air to be sucked into the system.
Note that it is of the utmost importance
for the performance and sound level of
the axial flow fan that the air flow is un-
impeded and free of eddies.
The required direction of air flow must
also be taken into consideration when
deciding location. The fan is provided
with an arrow plate denoting the direc-
tion of air flow through the housing. The
housing can only face one way.
Sizes
Motor size
-80
-90
-100
-112
-132
-160
-180
Hub di
am
et
er
23
0,
33
0 and 38
0
400
65
72
79
500
82
89
96
104
130
560
87
94
100
109
135
170
630
97
104
110
119
145
180
710
107
114
120
129
155
190
800
119
126
132
141
167
202
900
131
138
144
163
179
214
261
Motor type
-80
-90
-100
-112
-132
-160
-180
Motor weight
11
18
25
34
59
94
141
Table 1. Total fan weights (incl. motor) and weights of motors alone [kg]
