

Operating
Operating Instructions
Instructions
for
for
......................................
AXV / AGV
AXV / BXV
/ BXV Axial
Axial Fans
Fans

Wolter GmbH Maschinen- und Apparatebau KG • Am Wasen 11 • D-76316 Malsch • Tel. 07204/92010 • Fax. 07204/920111
 PRODUCT DESCRIPTION

Contents
1 General Safety Notes ............................................................................................................................3
1.1 The operator's duty of care .............................................................................................................3
1.2 Explanation of the safety symbols used ..........................................................................................3
1.3 Fundamental safety measures........................................................................................................3
1.4 Particular kinds of hazards..............................................................................................................4
2 Product Description ...............................................................................................................................4
2.1 Stipulated usage.............................................................................................................................4
2.2 Construction ...................................................................................................................................5
2.3 Functional description.....................................................................................................................5
2.4 Technical data ................................................................................................................................6
3 EC Declaration of Conformity in Accordance with Appendix II A of the EC Machinery Directive
(89/392/EWG) ..............................................................................................................................................7
4 Transportation and Storage ...................................................................................................................8
4.1 Transportation ................................................................................................................................8
4.2 Storage...........................................................................................................................................8
4.3 Dimensions.....................................................................................................................................8
5 Assembly...............................................................................................................................................8
5.1 Frequent errors which occur during assembly ................................................................................9
5.1.1 Inflow.......................................................................................................................................9
5.1.2 Outflow..................................................................................................................................10
5.1.3 Bends ....................................................................................................................................10
5.1.4 Changes in cross-sectional area ............................................................................................10
5.1.5 Flexible connections ..............................................................................................................11
6 Initial Start-up ......................................................................................................................................11
6.1 Checks prior to initial start-up .......................................................................................................11
6.2 Starting the fan for the first time ...................................................................................................12
6.3 Checks after initial start-up ...........................................................................................................12
7 Help with Malfunctions.........................................................................................................................12
7.1 Tabular overview of possible malfunctions and aids in eliminating those malfunctions..................12
8 Maintenance........................................................................................................................................13
8.1 Servicing ......................................................................................................................................13
8.2 Overhaul ......................................................................................................................................15
8.2.1 Dismantling the rotor..............................................................................................................15
8.2.2 Assembling the rotor ..............................................................................................................15
8.2.3 Motor bearing service intervals ..............................................................................................15
8.2.4 Instructions on correct bearing replacement...........................................................................15

2 Betriebsanleitung AXV / AGV

BXV / BXV 12.07.01
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 PRODUCT DESCRIPTION

1 General safety notes

1.1 The operator‘s duty of care

The fans ofof the
the AXV
AXV,and
AGVBXV(AXV withhave
series guide vane)
been and BXVand
constructed series
builthave
whilstbeen constructed
taking andanbuilt
into account whilst
analysis
taking into account
of the hazards an analysisof
involved, the hazards
and after careful involved,
selection and after standards
of the harmonised careful selection of the harmonised
to be observed, as well as
other further
standards to technical specifications.
be observed, They thus
as well asother correspond
further to the
technical current levelThey
specifications. of technology and guarantee
thus correspond to the
a high degree
current level ofoftechnology
safety. and guaranteea high degree of safety.
In operational practice, however, this level of safety can only then be attained if all required measures are
taken. It is incumbent upon the operator‘s duty of care to plan these measures and to monitor their
execution.

In particular, the operator must ensure that

- the fan is only used as stipulated (cf. chapter, „Product Description“)
- the fan is only operated in a faultless and functional condition and that safety fittings, especially, are
regularly examined with respect to their functionality
- the operating instructions are always maintained in a readable condition and are available at the fan‘s
location of deployment in their entirety
- only sufficiently qualified and authorised personnel operate, maintain and repair the machine
- these members of personnel are familiar with the operating instructions and especially the safety notes
contained therein
- no safety and warning signs fitted to the fan are removed, and that they are kept in a readable condition.

1.2 Explanation of the safety symbols used

The following symbols are used in these operating instructions. These symbols are, above all, intended to
draw the reader‘s attention to the text contained in the adjacent safety note.

Warning This symbol indicates that dangers exist which are hazardous to life and health

Mortal danger Electrical hazard. Serious – and also fatal – injury can result if these notes are
disregarded.

Note Indicates user tips and other useful advice.

1.3 Basic safety measures

Wolter axial fans are, at the moment of delivery, manufactured to the current level of technology.
Extensive materials, function and quality checks assure them of a high level of usefulness and long service
life! Nevertheless, these machines can be dangerous if they are improperly used by untrained personnel or
are used in a non-stipulated manner.
- Read these operating instructions carefully before putting the axial fans into operation!
- Only operate the fan in its enclosed state or with properly assembled protective anti-intrusion
fittings, or with protective screens. (We can supply suitable, tested protective screens on
request!)

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 PRODUCT DESCRIPTION
- Assembly, electrical connection and maintenance may only be carried out by trained
craftsmen!
- Only operate the fan in the manner stipulated and within the specified output limits (see rating plate)
and with approved conveyed media!

1.4 Particular kinds of hazards

The fans of
of the
theAXV
AXV,and
AGVBXVand series
BXVare axialare
series fans. In this
axial fans.respect,
In this particular hazards are
respect, particular causedare
hazards bycaused
the
rotor
by and through
therotor the flow
and through of flow
the air, which
of air, can, at can,
which times,
atbe considerable.
times, For this For
be considerable. reason
this the following
reason points
the following
are to be observed:
pointsare to be observed:
• Never reach into the rotor when it is rotating. Do not try to use your hand as a brake for the rotor during
maintenance work.
• Loose clothing or light parts can be sucked in by the draught of air. That is why you should always wear
tight-fitting clothing during maintenance work and during free-suction operation.
• Larger items (tools etc.) can obstruct or totally ruin the rotor. For this reason you should always fit a
protective screen during free-suction or free-blowing operation.

2 Product description

2.1 Stipulated usage

Our axial fans have been specially developed for use in modern ventilation and air conditioning systems.
The rotors are statically and dynamically balanced at the factory, and manufacture is subject to the strictest
intermediate and end checks and is certified in accordance with DIN/EN/ISO 9001.
Conditions of use
The air should correspond to tender specifications, as the corresponding components are determined for
this. If these are not listed in more detail, then the following applies:
fans of
The axial fans of the
the AXV,
AXV AGV
and BXV
and series are suitable
BXV series for the
are suitable forconveyance of of
the conveyance
• clean air
• air which has little dust and grease content
• gases and vapours which are only slightly aggressive in nature
• media up to a maximum air density of 1.3 kg/m³
• flow volumes at temperatures ranging from - 30 °C to + 60 °C
• media up to a max. humidity of 95%
Conditions of fitting
• The fan must either be built into a ducting channel or have suction and outflow protection elements
fitted to it.
The fans are not designated for any types of usage other than those cited here, and any such use shall be
considered as improper usage!
In particular, we especially draw your attention to the following points. Non-compliance can either
result in considerable material damage or personal injury, or that the demanded fan output values
are not attained.
• The fan may not be operated without the necessary safety fittings. Should there be no ducting channel
connected at one end, e.g. the suction end, then a protective screen must be fitted at that end in order
to prevent access to rotating parts.
• In order to avoid any damage to the fan and specially to the rotor vanes, you must prevent the
possibility of loose parts being sucked in by the fan or of other items being able to find their way into the
fan.

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 PRODUCT DESCRIPTION

• The fitting notes regarding intake and outlet flow conditions are to be observed.

2.2 Construction
The axial fan consists of the following main parts: 5 1 2 3 7
(1) Ducting piece as fan housing
(2) Rotor mounted onto the motor shaft
(3) Motor stay in the form of struts or bracket
(4) Electric motor
According to the particular use the fan is put to, the
following parts may also be included:
(5) An intake nozzle complete with suction protective
screen for free-suction operation
(6) An outflow protective screen for free-blow
operation
(7) Flexi-connectors are obtainable to prevent de-
coupling through vibration
(8) Vibration dampers (spring or rubber vibration 8 4 11 6
dampers according to the weight of the unit)
(9) Counter flange
(10) Fan switch-off facility
(11) Assembly base supports
In normal circumstances the fan is built into a ducting system. It can, however, be integrated into a box in
order to suppress noise, which is then built into the ducting system.
The rotors, made from plastic or aluminium, have fins which can be adjusted when the fan is not running.
The fan‘s characteristic curve can be adapted the required operational point by this means (take note of the
motor‘s loading specification!)

2.3 Functional description

The fan sucks air from the ducting on the suction side through the rotating rotor and conveys this air in the
axial direction to the outflow side via the motor. The motor is positioned in the air flow and is cooled by the
flow.
Control and regulation of the system is carried out by an external control unit. This does not form part of the
fan itself. The corresponding operating instructions are to be consulted with regard to the control unit‘s
operation. The fan itself requires no operation when it is running.

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 PRODUCT DESCRIPTION

2.4 Technical Data

s Ø Tk
2.4 Technical
Guide vane dataLH SH
ØDa

ØDi

hF

z x Ød

bF
L k1 k2 E

l1 l2 F

l max

Baugröße Da Di hF L zxd Tk E F bF
size [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]
315 398 320 205 152 8 x 12 366 265 315 60
355 438 359 225 152 8 x 12 405 305 355 60
400
Nominal 484
Di 401Da 250 hF 152 zxd 12 x 12 Tk 448 E 350 F 400 60
bF
width
450 534
[mm] 450
[mm] 280
[mm] 152
[mm] 12 x 12
[mm] 497
[mm]400 [mm]450 60
[mm]
500 584 504 315 152
315 320 398 205 8 x 12 12 x 12 366 551
265 440 315500 6070
560
355 664
359 565438 345 225 152 8 x 12 16 x 14 405 629305 500 355560 6070
400
630 401
734 634484 400 250 152 12 x 12 16 x 14 448 698 350 570 400630 6070
450
710 450
814 711534 450 280 190 12 x 12 16 x 14 497 775 400 650 450710 6070
500 504 584 315 12 x 12 551 440 500 70
800 904 797 500 190 12* x 14 861 730 800 80
560 565 664 345 16 x 14 629 500 560 70
900 1004 894 580 200
630 634 734 400 16 x 14 12* x 14 698 958
570 830 630900 7080
1000
710 1105
711 1003814 630 450 200 16 x 14 12* x 14 7751067 650 930 710990 7080
800
1120 797
1245 1125904 690 500 240 24 x 14 16* x 18 861 1200 730 1050 8001110 80
100
900
1250 894
1370 1004
1250 750 580 240 24 x 14 16* x 18 958 1337 830 1180 9001240 80
100
1000 1003 1105 630 24 x 14 1067 930 990 80
1400 1525 1405 830 260 16* x 18 1475 1330 1390 100
1250 1250 1345 850 24 x 14 1315 1180 1240 100
1600 1725 1605 930 260 20* x 18 1675 1530 1590 100
LH SH LL SL
Nominal s k1 l1 motor k2 l2 lmax s k1 l1 motor k2 l2 lmax
LH/1 LH/2 SH
width [mm] [mm] [mm] max. [mm] [mm] [mm] [mm] [mm] [mm] max. [mm] [mm] [mm]
Baugröße
315 2.5 s 335 k1
400 l1
80 motor
160 225s 350k1 2 l1 336motor400 s 80 k2161 l2
225 lmax
350
size
355 2.5 [mm]335 [mm]
400 [mm]
80 max.
160 [mm] 350
225 [mm] 2 [mm] 336 max. 400 [mm]80 [mm]161 [mm]
225 [mm]
350
400
315 2.5 2 335 400
356 90
420 160
80 225 400 2.5 335 400 2 90 161161 225
225 400
350
450
355 2.5 2 415 480
356 112
420 160
80 225 500 2.5 415 480 2 112 161161 225
225 500
350
500 3 324 400 90 149 225 400 2.5 325 400 90 150 225 400
400 2 371 435 90 2 161 225 400
474 550 132 149 225 600 475 550 132 150 225 600
450
560 3 2 404 371
480 435
112 112
149 225 500 2.5 405 480 2 112 161150 225
225 500
500
500 2 624 396
700 470
160 112
224 300 750 625 700 2 160 151225 225
300 600
750
630
560 3 2 404 480
396 112
470 149
112 2253 500624 3 700 404 160 480 3 112 224149 225
300 500
750
630 2 624 700
396 160
470 224
112 3003 750624 700 624 160 700 3 160 224224 300
300 750
750
710 4 322 400 90 147 225 400 3 324 400 90 149 225 400
710 2,5 395 470 112 2,5 490 565 132 2,5 225 300 600
472 550 132 147 225 600 474 550 132 149 225 600
800
800 4 2,5392 385
480 470
112 112
137 2253 500614 3 700 394 160 480 3 112 214139 300
225 750
500
900 3 612 479
700 565
160 132
212 300 4 750612 700 614 160 700 4 160 212214 300
300 750
750
900
1000 4 3 392 480
479 112
565 137
132 2254 500692 3 780 394 180 480 4 112 262139 225
350 500
800
1120 4 612 700
592 160
700 212
160 3004 750892 1000 614 200 700 4 160 242214 300
350 750
800
1000 4 462 550 132 137 225 600 4 462 550 132 137 225 600
1250 4 592 700 160 4 892 1000 225 4 242 350 800
692 780 180 262 350 800 692 780 180 262 350 800
1400
1250 4 692 800 180 242 3504 800892 4 1000 692 225 800 4 180 242242 350
350 800
800
1600 892 1000 225 - -4 - 892 1000 892 280 1000 4 225 242 - 350- 800
-

6 Betriebsanleitung AXV / AGV

BXV / BXV 12.07.01
V2009.03
 PRODUCT DESCRIPTION

3 EC Declaration of Conformity
in accordance with Appendix II A of the EC Machinery Directive (89/392/EWG)

The manufacturer: Wolter GmbH

Maschinen- und Apparatebau KG
Am Wasen 11
D-76316 Malsch
hereby declares that the machine described in Fans of the AXV, AGV
AXV or or series
BXV BXV series
the following:

meets the health and safety requirements of the In accordance with Machinery Directive (98/37/EG),
following EC Directives: Appendix II A
in accordance with the Low Voltage Directive
(73/23/EWG)

Harmonised standards applied:

DIN EN 60335-2-2 Safety of electrical equipment for household use and
similar purposes; Part 2: Special requirements for dust
and water suction machinery
DIN EN 60335-2-80 Safety of electrical equipment for household use and
similar purposes; Part 2: Special requirements for fans
DIN VDE 0700-220 Safety of electrical equipment for household use and
similar purposes; Fans and associated control units for
use on ships
DIN EN 1037 Machine safety; Avoiding the unexpected start up of
the machinery.
DIN EN 1088 Machine safety; Locking systems in combination with
detachable protective fittings; Guiding principles for
lay-out and selection
DIN EN 25136 Acoustics; Determining the irradiated noise output of
fans in ducting. Ducting behaviour (ISO 5136:1990 and
Technical Corrigendum 1:1993)
DIN EN 292-1 Machine safety; Basic terms, general guiding principles
of lay-out; Part 1: Basic terminology, methodology
DIN EN 294 Machine safety; Safety distances for the prevention of
upper limbs coming into the vicinity of danger areas
DIN EN 811 Machine safety; Safety distances for the prevention of
lower limbs coming into the vicinity of danger areas
DIN EN ISO 11200 Acoustics; Noise irradiation of machines and
appliances; Guidelines on the application of basic
standards for establishing noise emission levels at the
workplace and at other fixed locations (ISO
11200:1995)
Any changes in construction which have an effect on the technical data specified in the operating
instructions and on the machinery‘s stipulated usage, i.e. those changes which essentially change
the machine, shall invalidate this declaration of conformity!

Malsch, 04.10.2000
Hans Rudolf Kresse, Managing Director

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 MAINTENANCE

4 Transportation and Storage

4.1 Transportation
Wolter fans are packed at the factory to suit the respectively agreed mode of transportation.
Transport the fan in its original packaging.
- Only use suitable means of transport, such as pallet trucks or fork-lift trucks.
- If the fan is to be transported by hand, ensure that supporting and carrying loads are kept within
reasonable limits for the personnel involved.

The following special hazards must be taken into account when transporting the equipment:
- The transportation packaging does not prevent damage to the equipment through improper
transportation. The fans must not be dropped or thrown.
- Sharp, protruding edges can lead to injury through cuts.
- Suspended loads can fall, which then constitutes a fatal hazard – stand well clear of suspended
loads!
- Parts which have been stacked too high can collapse.
- If load-carrying devices other than those specified here are used, then this can lead to serious damage
to the machine.
- A risk of fire exists due to the easily flammable nature of the packaging materials – do not use naked
flames and do not smoke!
- Read the chapter, „General Safety Notes“.

4.2 Storage
- Store the fan in a dry, weather-protected location in its original packaging or protect it from the effects of
dirt and the weather until final assembly. Cover open pallets with tarpaulin sheets and protect the fans
from the effects of dirt and contaminants (e.g. swarf, stones, wire etc.)
- Avoid extremes of cold and heat.
- Avoid lengthy storage periods (a maximum of one year is recommended) and check that the motor
bearing assembly is in good functional order prior to fitting.

4.3 Dimensions
See chapter, „Technical Data“

5 Assembly
Assembly and electrical work is only to be carried out by trained and instructed
craftsmen and in accordance with the respectively applicable regulations!
The following points are to be observed when assembling the fan:
• Secure the fan to the assembly base plates.
• The fans must not be deformed or twisted during fitting! Use spacing plates if the need arises

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 MAINTENANCE

• The fitting position agreed in the lay-out is to be observed

• Only self-locking screws may be used for securing the outflow flange!
Attention: Make the electrical connection in accordance with the technical connection
conditions and the relevant regulations!

• Make the electrical connection as per the enclosed terminal plan in the motor connection cabinet or
terminal cabinet housing
• Feed in and seal the cable into the connection cabinet properly
• If present, connect the posistor / thermo-contact for motor protection, as otherwise the warranty lapses!

Before checking the direction of travel:

• Remove foreign bodies from the fan area

• Assemble contact protector, protective screen (see accessories), or box in fan
• Turn the rotor through a few revolutions by hand in order to test its ease of movement
• Check the direction of travel in accordance with the arrow on the housing by switching on and off very
quickly
• If necessary, alter the direction of travel for AC motors by swapping 2 phases
• In the case of single-phase motors, reverse the direction of travel by swapping Z1 with Z2 (attention: the
direction of current flow in the auxiliary winding also changes)

5.1 Common errors which occur during assembly

The following points must always be observed in order to achieve the desired operational level and to
guarantee the fan‘s safe operation.

5.1.1 Inflow
Incorrect Correct

INCORRECT: No intake nozzle – Result: The vane RECOMMENDED: The intake nozzle enables an even
edges are not in the air flow, the air output is flow to be achieved over the whole cross-sectional
reduced, noise output becomes greater. This can area.
cause permanent damage to the rotor blades.
>D

INCORRECT: The fan output is reduced if an obstacle RECOMMENDED: The distance must be at least as
is situated too close to the intake great as the fan diameter

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 MAINTENANCE

5.1.2 Outflow
Incorrect Correct
>D

INCORRECT: Any blockage of the outflow must be RECOMMENDED: The distance must at least be as
prevented great as the fan diameter
D

1.26 D
2D
INCORRECT: The outflow should not end at the same RECOMMENDED: An outflow passage having a length
point as the fan. of 2xD, or an outflow diffuser, as shown, both reduce
outflow losses

5.1.3 Bends
Incorrect Correct
>D

INCORRECT: Bends with a small radius of curvature RECOMMENDED: A quadratic channel corner with short
reduce fan output and increase noise levels if fitted guide vanes is preferred.
too close in front of the vane.

5.1.4 Changes in cross-sectional area

Incorrect Correct

β β

INCORRECT: Diffusers or nozzles having an angle RECOMMENDED: If possible the angle should be less
greater than 30° should not be used. than 15°.

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 MAINTENANCE

5.1.5 Flexible connections

Incorrect Correct

INCORRECT: Loose, flexible connections in front of the RECOMMENDED: Flexible connections should be
fan obstruct the available cross-sectional area, fan tensioned to such a point that they only permit the
output is reduced and noise levels increase. movement required for insulation.

6 Initial Start-up
The following points are to be observed in order to avoid damage to the machinery or life-threatening injury
during initial start-up:
- Only qualified personnel may carry out the machine‘s initial start-up and this must take place in
compliance with the safety notes.
- Prior to initial start-up, check that all tools and foreign bodies have been removed from the machine.
- Activate all safety devices and Emergency Stop switches prior to initial start-up.
- Check the motor‘s direction of travel prior to initial start-up.
- Read the chapter, "General Safety Notes ".

6.1 Checks prior to initial start-up

Proceed with the fan‘s initial start-up in the following sequence:
• Check that the mechanical assembly has been carried out properly
• Remove foreign bodies located in the suction and outflow areas and in the fan space
• Check that the electrical installation has been completed in accordance with regulations
• Does the mains voltage match the motor voltage specified on the rating plate?
• Is the switchgear used suitable for the motor both with respect to the switching functions to
be carried out and also to the switching conditions and switched output of the motor?
• Is the motor protection system set correctly with regard to the motor‘s nominal current? The setting
must be carried out in accordance with the corresponding details contained on the motor output
plate.
• Has the motor been connected correctly in accordance with the wiring diagram?
The connection schematic supplied by the motor suppliers applies for the connection of the motor.
The special connection regulations are to be observed for explosion-protected models.

Accident prevention

• Protective anti-intrusion fittings, protective screens (see accessories) mounted, fan boxed in or
assembled out of reach.
• If the fan is assembled for free-suction, the suction aperture must be covered by a protective
screen. This is the only way that the accident prevention regulation governing protection from
contact can be deemed to have been met.

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 MAINTENANCE

6.2 Starting up the fan for the first time

Only put the fan into operation after it has been assembled in accordance with the regulations!
• Put the fan into operation.
• Monitor its correct function (quiet running, vibration, imbalance, power consumption, controllability)
Should the required output (volume flow or pressure increase) not be achieved by the fan, e.g.
through unforeseen changes in the installation system, the rotor fins can be adjusted up to the
maximum fin settings specified both on the rating plate and in the technical documentation. The
power consumption must be re-measured in order to avoid any possible motor overload.
The thermo-protection system may be activated if the motor power consumption is too high!
• Check the bearing temperature after a lengthy period of operation
Always keep suction openings clear! Check protective screens or protective anti-intrusion fittings for
dirt, and clean if necessary!

6.3 Checks after initial start-up

Check the mechanical connections after initial start-up, especially the joints at the fan.

7 Help with Malfunctions

The following points must be observed in order to avoid damage to the machinery or life-threatening injury
when eliminating machine malfunctions:
- Only eliminate any malfunction if you have the specified qualifications necessary for the task.
- First of all ensure that the machine cannot be switched on inadvertently, by locking the equipment‘s off
switch or control cabinet by means of a padlock.
- Secure the hazardous area with respect to moving machine parts.
- Read the chapter, "General Safety Notes".

7.1 Tabular overview of possible malfunctions and aids in eliminating

those malfunctions
Symptom Cause Elimination
Motor or motor control Motor too hot, thermo- Allow the motor to cool off. Depending upon the
system switches off contact activates. control equipment in use, the fan will either start
itself up or will have to be re-started again.
Check whether:
- The conveyed medium is too hot
- All phases are evenly loaded and connected
- Operating point does not match the lay-out
- Rotor blocked

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Air output incorrect Incorrect direction of Change the direction of travel (see electrical
travel of the fan assembly)
Fan assembled Either the rotor is incorrectly mounted on the motor
incorrectly shaft or the whole fan has been incorrectly fitted into
the installation.
Switch off the fan.
Correct the incorrect assembly (rotor or complete
fan).
Rotor blocked Switch off the fan.
Remove the blockage. Ensure that the accident
prevention regulations are observed in the process.

Rotor defective Switch off the fan.

Dismantle the rotor and fit a new one.
Lay-out does not match Clean or replace filters if dirty;
installation resistance In the event of an erroneous lay-out, the fan‘s output
can be altered by changing the vane angle within
limits. In this case the shaft output must be checked
for the required vane, so that the motor is not
overloaded. The rotor should be re-balanced after
any alteration to the vane angle.
Fan is labouring under Fan is operating within an If possible, reduce the installation resistance. If this
load, air flow is unfavourable laboured operation of the fan continues over a
periodically interrupted characteristic curve prolonged period, the rotor will be ruined!
range

8 Maintenance
The following safety notes must be observed when maintaining the machine – life-threatening injuries to
personnel, damage to the machine and other material damage, as well as environmental damage, will be
avoided in this way.
- Cleaning, lubrication and maintenance work may only be carried out by authorised operating personnel
– operating instructions are to be observed.
- Repair work may only be carried out by authorised craftsmen – accident prevention regulations are to
be observed.
- Secure the operational area over a large area prior to the commencement of maintenance work.
- The specified sequence of the working stages is to be observed exactly.
- All work on the machine‘s electrical equipment may only basically be carried out by trained electricians.
- Self-locking screws and nuts are always to be renewed.
- All specified screw torque settings are to be observed precisely.
- Read the chapter, "General Safety Notes ".

8.1 Servicing
The rotor and housing are subject to natural wear and tear through the action of dust, acidic and corrossive
vapours, as well as the gases which are mixed into the conveyed flow. The type and concentration of the
dust, as well as the gases and vapours, can lead to deposits, abrasion and corrossion at the rotor and
housing.

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 MAINTENANCE
The materials can be attacked so much by this natural wear and tear that they can no longer stand up to the
demands made of them. Deposits on the rotor, which have never been evenly distributed, lead to an
imbalanced state and thus to noisy running, which in turn can result in damage to the motor bearing.
Deposits in the housing lead to a narrowing of the available cross-sectional area or to a roughening of the
housing panels and can thus have an unfavourable effect on the fan‘s output data. Should the checks, the
regularity of which depend on the conveyed media and other operating conditions which differ in each
individual case, only reveal slight wear and tear, then the individual parts can be cleaned in good time, or
replaced if necessary.
Prior to all servicing work:
- Bring the fan to a halt in the prescribed manner and completely isolate the fan from the mains supply!
- Wait until the rotor has come to a halt!
- Ensure that the machine cannot be switched on again!
- Clean the fan
- Clean the suction apertures
- Clean the rotor (if necessary dismantle the protective anti-intrusion fitting)
Only use cleaning agents generally available through the trade and in compliance with the
prescribed safety measures. Do not use scratching or scraping tools (protective surface coating will
be ruined)
- Do not overload the motor!
- Do not bend the rotor or vanes!
- Assemble the protective anti-intrusion fitting
General checks
- Too much bearing play?
- Lubricant leaking from the bearings?
- Surface protective coating damaged?
- (Attention: Conveyed medium too aggressive!?)
- Unusual noises during operation
- Fan output still sufficient for possibly extended or shortened ducting system?

14 Betriebsanleitung AXV / AGV

BXV / BXV 12.07.01
V2009.03
 MAINTENANCE

8.2 Overhaul
Prior to all overhaul work: Bushes Torque
- Bring the fan to a halt in the prescribed manner and completely isolate the Type Drilling Tightness
fan from the mains supply! [mm] [Nm]
1008 12, 19, 24 6
- Wait for the rotor to come to a halt!
1108 19, 24, 28 1/4“ sw 3
- Ensure that the machine cannot be switched on again! 1210 16, 19
Only use spare parts which have been tested and approved by us!

2 threaded studs
1215 24, 32
20
1310 14, 25, 35
3/8" sw 5
8.2.1 Dismantling the rotor 1610 19, 24
1615 38, 42
• Remove hub cover. 2012 24, 38, 50
32
7/16" sw 6
• Slacken off securing screw (Allen key), completely undo one grub screw
49
and slacken off the tension cone using the forcing drilling. 2517 38, 48, 60
1/2" sw 6
• Pull off the rotor from the motor shaft (possibly using a puller tool) Torque settings for taper hubs

8.2.2 Assembling the rotor

Screw M4 M5 M6 M8 M 10 M 12 M 16 M 20
• Push the rotor onto the motor shaft
Torque setting 3.7 7.5 12 31 60 108 265 510
• Tighten both grub screws evenly, +0% / -10% Nm Nm Nm Nm Nm Nm Nm Nm
whilst observing the torque settings
Torque settings for screws
given in the adjacent table.
• Fit the hub cover

8.2.3 Motor bearing service intervals

The roller
The rollerbearings
bearings of of
thethe standard
standard AC motors
Motorare Service intervals operating hours for Kind of Grease
Motor Service intervals in operating hours for
AC motors arebasically equipped
basically equipped with a permanently size sealed 3000 min -1
1500 min -1
1000 and 750 min -1
Model
size 3000 min
-1
1500 min
-1
1000 and 750 min
-1
with a permanently
lubrication sealed lubrication
system consisting of a high-quality,
56 20000 20000 20000
system consisting of lithium-based
temperature-resistant, a high-quality, roller bearing
63 2000056 20000 20000 20000
20000 20000
grease (melting point approximately
temperature-resistant, lithium-based160°C). 71 The 2000063 20000 20000 20000
20000 20000
amount of lubricant
roller bearing greasesupplied
(meltingto the bearing 80
point by the 1800071 20000 20000 20000
20000 20000
motor manufacturer
approximately 160°C).isThe sufficient
amountfor of 10,000
90 to 1600080 20000 18000 20000
20000 20000
20,000
lubricantoperating
supplied hours.
to the bearing by 100 1400090 20000 16000 20000
20000 20000
LI-BASE GREASE
themotor manufacturer
Unfavourable operating is sufficient
conditions,for such112 as 14000 100 20000 14000 20000
20000 20000 EP2
eg. MOBILUX
10,000 to 20,000
permanently operating
lengthy operatinghours. 132 in 11000
periods, changes 112
20000
14000
20000
20000 20000
bearing loads etc.,
Unfavourable require that
operating 160
the motor bearings
conditions, 20000 20000
132 11000 20000 20000
are
suchmonitored
as permanentlycarefully. The operating
lengthy service intervals
180 or 20000 20000
160 20000 20000
lubrication deadlines inbearing
periods, changes and amounts depend200
loads on the 18000 20000
motor‘s operating 180 20000 20000
etc., require that conditions,
the motor the rotary speed
bearings 225 and 18000 20000
size 200 18000 18000 20000
are of bearing. carefully. The service
monitored 250 20000
As only the orlubrication
intervals construction sizedeadlines 280
and rotary speed of 225 18000 18000
20000 20000
the Service intervals for motor bearings
andmotors
amounts are usually
dependknown, the service intervals
on themotor‘s Service intervals for motor bearings
specified
operatingin the adjacent
conditions, the table
rotaryshould
speedbe andapplied.
size of They refer to a coolant temperature of 40°C in the case of
bearing.
horizontal fitting (construction form B3). The service
As only the construction size and rotary speed of the motors are intervals areusually
to be put backthe
known, by 1/3 in the
service case ofspecified
intervals
vertical fitting.
in the adjacent table should be applied. They refer to a coolant temperature of 40°C in the case of horizontal
You
fittingshould consult the
(construction formmanufacturer without
B3). The service fail in are
intervals the to
event thatback
be put motor
by repairs arecase
1/3 in the required withinfitting.
of vertical the
warranty period.
You should consult the manufacturer without fail in the event that motor repairs are required within the
warranty period.
8.2.4 Instructions on correct bearing replacement
8.2.4allow
Only Instructions
work on the on correct
electric motorbearing replacement
to be carried out by a craftsman or by a suitable motor winding
Only allow work on the electric motor to be carried out by a craftsman or by a suitable motor winding
workshop.
workshop.

12.07.01
V2009.03 Betriebsanleitung AXV / AGV
BXV / BXV 15