BLAUBERG Ventilatoren Tower A Series User manual

Tower A(L)
User's manual

PURPOSE
A roof axial fan Tower A(L) enclosed into a metal casing, having impeller
diameter 200 to 350 mm (hereinafter referred to as "the fan") is intended for
use in ventilation systems of housing, public and
industrial premises heated during winter.
The air coming out of the fan should not contain dust, other solid admixtures,
sticky substances, and fibrous materials.
The ambient temperature should not exceed the limits indicated in Table 1.
The fan should be installed vertically on the output air duct shaft
And may be used only for exhaust ventilation.
The fan is designed for long-term operation without disconnecting
off the mains.
By the type of protection against electrical shock the fans
belong to Class І.
The degree of protection against access to the hazardous parts
and water penetration is IP24 (IPX4).
Design of the fans is being constantly perfected, so some models could differ from the ones,
described in this manual.
THE BASIC TECHNICAL DATA
The fans' designations, their parameters, connective and mounting
dimensions are provided in tab.1, 2 and on fig.1.
NOTES
2
DELIVERY SET
The delivery set includes:
- fan - 1 piece;
- user's manual;
- packaging.

3
table 1
figure 1
table 2
1 - casing;
2 - cover;
3 - self-cutting screws;
4 - bracket;
5 - junction box;
6 - grating;
7 - electric motor
with an axial impeller.
Cover 2 is not shown
Model
A H B D2 D1
Dimensions [mm]
Weight
[kg]
D1
D2
H
30
А
В
1
2
3
4
5
6
7
Tower A
200 2E
Tower A
250 2E
Tower A
250 4E
Tower A
300 2E
Tower A
300 4E
Tower A
350 4E
Tower A 200 2E
345208280 330425
5.0
Tower A 250 2E
405262280330 425
7.0
Tower A 250 4E
405262280330 425
7.0
Tower A 300 2E
555
314
340 450585
10.5
Tower A 300 4E
555
314
340 450585
10.5
Tower A 350 4E
555
364
350535655
12.0
Tower AL
200
Tower AL
250
Tower AL
315
345
208
280 330
425
6.1
Tower AL 200
405262300 330425
7.2
Tower AL 250
555
314
380450585
11.5
Tower AL 315
50
55
0.26
860
2300
50
+60
60
61
0.28
875
2550
51
+50
50
80
0.4
1050
2400
60
+60
60
91
0.42
1150
2990
61
+50
50
50
0.22
800
1380
55
+60
60
56
0.24
865
1730
56
+50
50
145
0.66
2230
2300
60
+60
60
178
0.79
2280
2410
61
+50
50
75
0.35
1340
1350
58
+60
60
92
0.4
1475
1405
59
+50
50
140
0.65
2500
1380
62
+60
60
147
0.66
2650
1700
63
+50
50
43
0.28
405
1300
32
+40
60
33
0.21
470
1615
31
+40
50
68
0.48
1070
1300
48
+40
60
76
0.51
1050
1450
48
+40
50
110
0.75
1700
1300
54
+40
60
104
0.7
1650
1365
54
+40
V
Hz
W
A
3
m/h
-1
min
dBA, 3m
0C, max.
1~230

4
SAFETY REQUIREMENTS
It is necessary to take measures to prevent penetration of black
gases into premises through open smoke ducts or other
fire-prevention facilities.
Fan installation and connection should be performed by
qualified electrician according to effective regulations.
Disconnect fan from the mains prior to maintenance and repair.
Before connection of the fan to power mains it is necessary to
ensure that there are no visible damages of impeller, casing,
grating, as well as foreign objects in the blowing part of the casing,
which can damage impeller vanes.
ATTENTION: Do not use the fan in the explosive or fire-hazardous
environment.

5
INSTALLATION AND CONNECTION
TO POWER MAINS
The fan (fig. 1) consists of a casing 1 with an electric motor and an impeller
7 fixed therein. The cover 2 and the protective grille 6 are fastened to the
bracket 4 by self-cutting screws. The terminal box 5 is fixed at the outer
side of the casing for connecting the fan to power mains.
The fan must be connected to power mains using durable, insulated and
heat-resistant electric conductors (cables, wires).
Connect the unit to power mains through the external automatic circuit
breaker with a magnetic trip integrated into the fixed wiring system to
disconnect all the mains phases. The gap between contacts of the circuit
breaker should be not less than 3 mm at all poles. A fan should be
mounted vertically. Air moving direction should coincide with the direction
of the arrow on the fan casing.
A fan may be equipped with protective grille at the input side.
Fan connection diagram
figure 2
M is motor, X is terminal block
М
L
N
х
1~230 V, 50/60 Hz
L
N
х
1~230 V, 50/60 Hz М
Tower A
Tower AL

6
MAINTENANCE
POWER OFF THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
Maintenance comprises periodical cleaning of the surfaces from dust and
dirt, when the fan is disconnected from power mains.
To remove the dust, use a soft dry brush or compressed air.
The blades of the impeller require careful cleaning every 6 months.
Loosen the self-cutting screws 3, detach the cover 2 and the grille 6 from the
casing 1. Wipe the impeller blades with a cloth wetted in a mild detergent
solution. Avoid water dripping on the electric motor!
Possible malfunctions and their elimination
Problem
Possible reasons
Elimination
The fan will not start.
No power supply.
Jammed motor.
Check the mains switch. Check the
electrical connections against the
wiring diagram.
Carefully check the fan impeller for
possible seizure and eliminate it, if
necessary. If the impeller is in order,
replace the electric motor.
The fan fails to reach
the required rotation
speed due to serious
overheating of the fan
motor.
Fan motor
overloaded.
Improper fan starting
method.
Eliminate the overload.
Use a soft starter or frequency
converter to start the motor
(see "Asynchronous Electric Motor
Starting Methods" in the "Connection
to power mains" section).

7
Problem
Possible reasons
Elimination
The fan motor runs at
overload capacity with
current consumption in
excess of the rated
value.
The fan supplies
more air than
expected upon motor
capacity selection.
Wrong motor
phasing. The
impeller rotates in
the opposite
direction of the arrow
on the fan casing.
Air ducts clogged.
Measure network resistance. Throttle
down the network (add aerodynamic
resistance to the air duct network).
If necessary, change the impeller
rotation direction by changing the
phase sequence on the electric motor
terminals.
Clean the air duct or the impeller.
The fan supplies less
air than expected.
Wrong calculation of
the ventilation
network and wrong
selection of the fan.
The network
resistance exceeds
the design
calculations.
Wrong direction of
the impeller rotation
direction.
Air leak through a
loose air duct
connection.
Impeller or air duct
contamination with
foreign objects or
debris.
Re-calculate the network parameters
and select a matching fan.
Re-arrange the ventilation network to
decrease its aerodynamic resistance.
If necessary, change the impeller
rotation direction by changing the
phase sequence on the electric motor
terminals (see the "Commissioning"
section).
Eliminate the air leak. Seal the air duct
connection.
Clean the impeller or the air ducts
from foreign objects or debris.

8
Problem
Possible reasons
Elimination
The fan supplies more
air than expected.
The resistance
values used during
the ventilation
network calculations
are too conservative.
The cross section of
air ducts increased
and their number
reduced during the
installation.
Wrong choice of the
fan.
Check the air ducts for proper shape
and cross section as well as for any
dampers present.
Throttle down the network (add
aerodynamic resistance to the air duct
network).
Replace the fan with a unit of proper
standard size.
Повышенный шум
или вибрация как в
самом вентиляторе,
так и в сети.
Loose screw
connections.
No flexible joints
between the fan and
the ventilation
network on the
suction and
discharge sides.
Loose connection of
valves and dampers
to the air ducts.
Impeller or air duct
contamination with
foreign objects or
debris.
Worn bearings.
Unstable power
supply, unstable
motor operation.
Check the screw connections for
proper tightness.
Install flexible joints.
Tighten up the fasteners of valves and
dampers.
Clean the impeller or the air ducts
from foreign objects or debris.
Replace the bearings.
Check the stability of power supply
parameters and electric motor
operation.

STORAGE AND TRANSPORTATION REGULATIONS
Store the unit in the manufacturer's original packaging box in a dry closed
ventilated premise with temperature range from +5 °C to + 40 °C and relative
humidity up to 70 %.
Storage environment must not contain aggressive vapors and chemical
mixtures provoking corrosion, insulation, and sealing deformation.
Use suitable hoist machinery for handling and storage operations to prevent
possible damage to the unit.
Follow the handling requirements applicable for the particular type of cargo.
The unit can be carried in the original packaging by any mode of transport
provided proper protection against precipitation and mechanical damage.
The unit must be transported only in the working position.
Avoid sharp blows, scratches, or rough handling during loading and
unloading.
Prior to the initial power-up after transportation at low temperatures, allow
the unit to warm up at operating temperature for at least 3-4 hours.
PRODUCT SALES
The product is sold in specialized and retail trade organizations.
9

10