NetterVibration NEA Series User manual

Installation and Operating
Jan. 2019
Instructions for Netter
No. 1762E
Electric External Vibrators
Page 1/28
These operating instructions apply to: Series NEA
Series NEG

2
Contents
1GENERAL INFORMATION 3
2SAFETY 6
3TECHNICAL DATA 7
4DESIGN AND FUNCTION 9
5TRANSPORT AND STORAGE 10
6INSTALLATION 11
6.1 Fixation of the vibrator 11
6.2 Electrical connections 12
7START-UP 15
8ADJUSTMENT OF UNBALANCES 16
9TROUBLESHOOTING 20
10 MAINTENANCE AND SERVICING 21
11 SPARE PARTS 25
12 ACCESSORIES 26
13 DISPOSAL 27
14 ANNEX 27
Scope of delivery
Please refer to the delivery note for the
scope of delivery.
Check the packaging for
possible signs of transport damage.
In the event of damage to the packaging,
check that the contents are complete and
undamaged. If there is any damage, inform
the carrier.

3
1 General information
Use and storage
Before using the electric external vibrators
of the series NEG read this operating
manual carefully. It is the basis for any ac-
tion taken with regard to the NEG and may
be used for training purposes. The operat-
ing manual should subsequently be stored
near the NEG.
Target group
The target group for these operating in-
structions is qualified technical personnel
who have basic knowledge in electrics and
mechanics.
Therefore, only staff who are qualified in
these fields may perform work on the NEA
and NEG.
The NEA and NEG may only be mounted,
put into operation, maintained, troubleshot
and disassembled by persons who have
been authorised by the operator.
Copyright
This documentation is subject to copyright.
NetterVibration reserves all rights includ-
ing those to translations, reproduction and
duplication of the operating instructions, as
well as parts thereof.
Limitation of liability
All technical information, data and instruc-
tions on installation, operation and mainte-
nance in these operating instructions are
based on the latest information available at
the time of printing and take our past expe-
rience to the best of our knowledge into
account.
No claims can be derived from the infor-
mation, illustrations and descrip-tions in
these operating instructions.
The manufacturer does not assume liability
for damages resulting from:
• failure to observe the operating
instructions
• improper use
• unauthorised repairs
• technical modifications
• use of inadmissible spare parts
Translations are made to the best of our
knowledge.
NetterVibration does not assume liability
for translation errors, even if the translation
was made by us or on our behalf. Only the
original German text is binding.

4
The following instruction and warning symbols are used in these operating instructions:
DANGER indicates a possible explosion which will result
in death or personal injury if the instruction is
not followed.
WARNING indicates a possible danger which can result
in personal injury, and/or material damage if
the instruction is not followed.
HOT SURFACE indicates a possible danger which can result
in personal injury, and/or material damage if
the instruction is not followed.
DISCONNECT
POWER SUPPLY
indicates a possible danger which can result
in personal injury if the instruction is not fol-
lowed.
IMPORTANT Note with especially useful information and
tips.
ENVIRONMENTALLY
SAFE DISPOSAL indicates the obligation of an environmentally safe disposal.

5
Information on the NEA and NEG
Netter electric external vibrators of the series
NEA and NEG comply with the EC machin-
ery directive 2006/42/EC, the electromagnet-
ic compatibility directive 2014/30/EU and the
low voltage directive 2014/35/EU.
In particular, the standards DIN EN ISO
12100, DIN EN 60529 and DIN EN 60034-1
have been complied with.
The electric external vibrators or the series
NEA and NEG comply with the directive
2014/34/EU for the equipment group II and
are suitable for use in potentially explosive
areas of the category 3D in the zone 22. The
standards DIN EN 60079-0 and 60079-31 in
particular have been observed.
Special features:
•adjustable centrifugal force
•all vibrators are impregnated for tropical use by vacuum casting or by trickle
impregnation.
•100% duty cycle
•degree of protection IP 66 (DIN EN 60529), housing size 50 and 60: degree of protection
IP 65
•insulation class F
•high rate of efficiency due to silicon electrical sheets
•terminal box integrated in housing foot (housing sizes 101 to 120)
•smallest mounting dimensions
•stainless steel covers
•sound level measured in the open ≤70 dB(A) according to IEC
•from housing size 170 upwards, equipped with PTC thermistors by default
•earthing screw on housing and in terminal box

6
2 Safety
Intended use:
The vibrators are intended for installation in
machines according to the equipment
group and category. These machines use
vibrations for sieving, loosening, convey-
ing, compacting and separating bulk mate-
rials.
Any other use is considered improper.
.
Qualification of the personnel:
Assembly, commissioning, maintenance
and trouble-shooting of the vibrators may
only be performed by authorised qualified
personnel.
Any handling of the electric vibrators lies
within the responsibility of the operator.
Accessories which ensure correct opera-
tion and safety must provide the protection
type required for the specific use.
WARNING
NetterVibration assumes no liability for personal injuries and material damages
if technical modifications on the product were made or the notices and regula-
tions in these operating instructions were not observed.
DANGER
The electrical external vibrators are built according to current EC directives.
Before using these vibrators in potentially explosive dusty atmospheres, the op-
erator must exclude the possibility that the introduction of vibrational energy
poses the risk of explosion.
Installation and operation of the vibrators must be carried out in a
ccordance with
the ATEX regulations for operation in potentially
explosive dust atmospheres,
the rules and regulations of the local associations for electrical engineering (e.g.
VDE) and the known accident prevention regulations.
DANGER
Live parts can cause severe or even fatal injury.
DISCON-
NECT
POWER
SUPPLY
When working on the vibrators, they must be safely disconnected from the elec-
trical mains. Proceed as follows:
1. Switch off vibrator.
2. Secure against unintentional switching on.
3. Determine that the NEA and NEG are voltage-free.
4. Earth and short-circuit.
5. Cover and fence off neighbouring live parts.
HOT
SURFACE
The vibrators must not be touched dur-
ing operation or shortly after
being
switched off.
The surface temperature
of the vibrato
rs can reach such high
values
during operation that there is a
risk of burning.
WARNING
Netter electric external vibrators generate vibrations.
The operator of vibration systems must protect workers against actual or poten-
tial hazards to their health and safety due to the effects of vibration.

7
3 Technical data
WICHTIG
Permissible operating conditions
Nominal voltage, nominal frequency:
The mains voltage and the mains frequency must comply with the nominal
voltage and nominal frequency indicated on the type plate.
Series NEA und NEG:
Voltage and frequency: see details on type plate.
Power supply with:
•fixed voltage and frequency or
•frequency converter
The operation of three-
phase vibrators of the series NEG with frequency
converters allows rotary speeds > nominal frequency.
If the electric external vibrators are operated with a frequency converter
,
compliance with the EMC directive has to be ensured.
In zone 22 the frequency converter may regulate the frequency between 20 Hz
and 50 Hz or 20 Hz and 60 Hz (please check max. frequency on type plate) at
a constant torque load (linear volt-hertz-curve).
Rotary speed ranges:
2-pole 3000 rpm 50 Hz / 3600 rpm 60 Hz
4-pole 1500 rpm 50 Hz / 1800 rpm 60 Hz
6-pole 1000 rpm 50 Hz / 1200 rpm 60 Hz
8-pole 750 rpm 50 Hz / 900 rpm 60 Hz
Permissible ambient temperature:
-20 °C to 40 °C* or
-20 °C to 55 °C*
The maximum ambient temperature specified on the type plate must not
be exceeded.
These values are valid for operation with an ON-period of 100 %.
Cycled or frequency-controlled operation or synchronous operation is
subject to specific requirements. These must be clarified with
NetterVibrationon a case-by-case basis.
These electric vibrators must not be used in environments with a highly
explosive gas atmosphere.
Thermal overload protection:
From housing size 170 upwards with thermistors type PTC 130 °C
as
standard.
For smaller vibrators: available on request as initial equipment.
If the vibrator is operated in environments with potentially
explosive dust
(zone 22), it is mandatory to connect the PTC-
thermistor. This regulation
does not apply if the unit is not equipped with a PTC-thermistor.
Sound level:
Depending on type
≤
70 dB(A)
The sound level is determined to a great extent by the surface upon
which the vibrator is mounted (e.g. sheet metal). The sound level will be
amplified by non-silenced sheet metal.
*) Higher temperatures are only possible after consultation with and written approval from the application techni-
cians of NetterVibration.

8
Please refer to the type plate for the technical data of your electric external vibrator.
Type plate for sizes
50 and 60
type designation
 
duty cycle
rotary speed
 
centrifugal force
nominal voltage
 
nominal frequency
current
 
power
phases
 
insulation class
serial number 
year of manufacture / degree of
protection
Type plate from size 100 on
temperature class T (D)
type designation 
duty cycle
nominal voltage 
centrifugal force
current 
rotary speed / nom. frequency
phases / capacity 
power input
power factor 
power output
year of manufacture 
insul. class / degree of protection
serial number 
max. ambient temperature
For detailed technical data of vibrators please refer to our leaflet.
.

9
4 Design and function
•The electric motor for the series NEA is a
three-phase asynchronous motor (capaci-
tor included on the supply cable or in the
capacitor box).
The electric motor for the series NEG is
a three-phase asynchronous motor.
−To achieve a high rate of efficiency at a
low motor temperature, the stators of the
asynchronous motors are made of an
electrical steel sheet with a low dissipation
factor.
−A special quality feature is the stator,
which has been cast under vacuum
with resin. The dried resin bonds hous-
ing and stator together to form an in-
separable unit, which is robust and trop-
ical proof. From housing size 140 up-
wards the stators are trickle impregnat-
ed. This method also completely fills the
spaces between the individual windings
and achieves high mechanical reliabil-
ity.
−Motor protection by incorporated PTC-
thermistor 130°C; as standard from size
170 upwards (DIN 44081 and DIN 44082).
−Protection by housing “tD” for use in areas
with potentially explosive dust atmos-
phere.
•The motor shaft is made of heat-
treated alloyed steel.
•The special bearings are over-dimen-
sioned and designed for heavy loads
and high frequencies.
•All units are ideally suited for speed
control with frequency converters.
•The housings of the sizes 50 to 140
and 160 are made of an aluminum al-
loy.
•The housings of the sizes 150 and
170 to 210 are made of high-tensile
nodular cast iron.
•Due to powder coating the paint finish
is highly weather resistant as well as
resistant against abrasion, impacts and
a wide variety of chemicals.
Colour: traffic black.
•The unbalance masses are adjusta-
ble as follows:
type XS continuously adjustable
type XLs in steps of 20°
type XL by removable discs
•The covers of the unbalances are
made of stainless steel.

10
5 Transport and storage
IMPORTANT
Check the packaging for possible shipping damage.
If damage to the packaging is found check the content for completeness and
possible damage. In case of damage inform the freight forwarder.
The units are packed ready for
installation. The type plate is at-
tached to the vibrator. If not other-
wise specified, the vibrator is deliv-
ered with an unbalance setting of
100 %.
When transporting the vibrator
make sure to avoid hard impacts or
vibrations which could damage the
bearings.
The unit should be stored in a
clean, dry environment.
If the vibrator needs to be in storage
for a longer period of time (2 years
max.), the temperature in t
he storage
area must not fall below -15 °C or
be
above +60 °C and the relative air hu-
midity must not exceed 60 %.
DANGER
If the vibrator is operated in areas with potentially explosive dust (zone
22),
maintenance by NetterVibration is mandatory after a storage period of
more
than a year.
WARNING
The transport eyes
are for exclusively
lifting the vibrator.
If the vibrator is fitted with two transport
eyes, both must
be used for lifting. The
pulling direction must not exceed 45°.

11
6 Installation
IMPORTANT
The installation of the vibrators must only be carried out by authorised, qualified
staff.
The staff has to work exclusively with tools suitable for the application.
IMPORTANT
During installation please comply strictly with the safety regulations in chapter 2
and the accident prevention rules!
Installation of the system must be performed in compliance with the local,
applicable regulations (e.g. VDE-regulations).
6.1 Fixation of the vibrator
Netter electric external vibrators can be operated in any position.
During installation the following notes must be strictly observed:
WARNING
The mounting surfaces must be abso-
lutely level (±0.1
mm flatness fault), so
that the feet of the vibrators have full
area contact and to avoid tension in the
housing when tightening the
fastening screws. The surfaces should
also be free of any paint residues and
branding
. Tensions in the housing can
cause mechanical and/or electrical
damage.
For safe fastening we recommend the use of Netter NBS screw connections con-
sisting of a screw, a special lock washer and, if applicable, a nut.
The vibrators can also be fastened with fastening screws of quality 8.8 (DIN 931
or 933). These must be secured with appropriate locking devices and
checked
and retightened at regular intervals (usually monthly).
WARNING
The tightening torques can be found in
the following table. Higher
tightening torques may cause fracture
of screws or tearing of threads.
Unsuitable
screw connections may
cause loosening of the
vibrators by
vibration. This can cause damage to
persons and material!
Recommended tightening torques for fastening screws and nuts [Nm]
(screws as supplied, without additional lubrication):
Type of screw
M6
M8
M10
M12
M16
M20
M22
M24
Property class 8.8 [Nm]*
10
25
50
87
210
411
559
711
Stainless steel screws [Nm]
8,8
21,4
44
74
183
-
-
-
* coefficient of sliding friction µ= 0,14
Use a torque wrench and tighten the screws crosswise.

12
DANGER
Use an additional safety device with
steel cable for critical installation situa-
tions, e.g. NSE.
Use the wire cable clamps to set the
safety cable to the shortest possible ca-
ble length.
The safety cable must always b
e
tensioned!
6.2 Electrical connections
IMPORTANT
The electrical installation of the vibrators must be performed only by authorised,
qualified staff.
The staff has to work exclusively with tools suitable for the application.
IMPORTANT
The mains voltage and the mains frequency have to correspond to the nominal
voltage and frequency indicated on the type plate.
A voltage tolerance of ±5 % or a frequency tolerance of ±2 % are permissible.
Connection examples for NEG
The vibrator circuitry must
be connected
according to
the type plate as follows:
Series NEG / 3-phase current
smaller voltage
higher voltage

The green-yellow conduc-
tor is the protective earth
and must only be connect-
ed to the earthing terminal.
Further connection plans
(e.g. for special voltages)
on request.
PTC-
thermistor

13
Connection example for NEA
Capacitor in cable
Cable with capacitor box
IMPORTANT
A suitable overload protection must be
pre-connected to
each vibrator. The
motor protection switches must be in-
terlocked with each other in pairs, so
that in the event of a motor failure, the
power supply from both motors is inter-
rupted at the same time in order not to
cause uncontrolled vibrations which
can damage the system.
DANGER
In zone 22
the motor circuit breakers
must be approved for applications in
potentially explosive atmospheres.
DANGER
In zone 22, an external grounding
must also be made via the earth con-
nection on the housing foot.

14
DANGER
Thermic overload protection:
Standard equipment with PTC-thermistor 130°C from housing size 170 up-
wards.
For smaller vibrators: available on request as initial equipment.
If the vibrator is operated in areas with potentially
explosive dust (zone
22), it is compulsory to connect the PTC-thermistor. This regulation
does
not apply for units without a PTC-thermistor.
DANGER
Only suitable, flexible supply
cables must be used
for connecting the vibrators.
The conductors in the supply cable for the connec-
tion of the vibrators to the mains must be tempera-
ture-resistant and have a sufficiently large cross-
section, which is adapted to the cable length used.
The temperature resistance of the cables depends
on the maximum surface tempe
rature stated on the
type plate.
IMPORTANT
When selecting the connection cables, consider that the cables are mechanical-
ly stressed by vibration.
Recommended cable types for mains operation at 400 V, in potentially non-
explosive atmosphere: rubber hose line H07 RN-F or oil flex cable 110 CY.
For other voltages or other ambient conditions, the cables must be adapted to
the respective conditions and designed accordingly.
DANGER
The terminal box cover may not be opened in a po-
tentially explosive
atmosphere or when voltage is
applied.
If the terminal box cover or unbalance covers are
open, check the condition and correct positioning of
the seals. Damaged seals must be replaced imme-
diately.
Cable temperature near
the cable gland: 120 °C
DANGER
The electrical cables must be carefully laid. Care must be taken to ensure that
the cables are not chafed through by vibrating parts.
The correct condition of the electrical cables with their plugs must be checked at
regular intervals (usually every six months). Detected errors are to be eliminat-
ed immediately. Protect the cable from high temperatures, lubricants and sharp
edges.
DANGER
Tighten terminal plate nuts with pre-
scribed torque. Remember to put
the
safety washer between the ring and
the nut and the vibration-damping in-
sert back.
M 4 ⇒1,2 Nm
M 5 ⇒2,0 Nm
M 6 ⇒3,0 Nm
M 8 ⇒6,5 Nm
M 10⇒13,5 Nm
IMPORTANT
The wire ends must be fitted with insu-
lated cable lugs, in order to prevent
the strands from splaying. The maxi-
mum size of the cable lugs can be
found in the following table:
Set screw M4 max. AWG 18
Set screw M5 max. AWG 16
Set screw M6 max. AWG 12
Set screw M8 max. AWG 12

15
7 Start-up
IMPORTANT
When commissioning the vibrators, the rules and regulations of the local asso-
ciations for electrical engineering (e.g. VDE) and the valid
accident prevention
regulations must be observed.
The vibrators must always be switched on and off at the main switch.
When operating the external electric vibrators with a frequency converter, com-
pliance with the EMC directive must be ensured.
If the speed is controlled with a frequency converter, the maximum centrifugal
force must not be exceeded. The unbalances must be reduced if necessary.
WARNING
The vibrators must not be oper-
ated without the covers
for the
unbalances! The rotating un-
balances cause a risk of injury!
DANGER
In zone 22, the frequency converter may control the frequency between 20 Hz
and 50 Hz or 20 Hz and 60 Hz at constant torque (linear Volt-Hertz curve). Ob-
serve maximum frequency on the type plate.
Explosion-protected vibrators may only be operated in atmospheres that do not
damage the material of the equipment.
The terminal box cover must never be opened in a potentially explosive atmos-
phere or in the presence of voltage.
The supplementary regulations and instructions applicable in Ex-
areas must be
observed.
DANGER
On initial start-
up, the current consumption must be measured individually in all
three phases and must correspond to the specifications on the type plate.
WARNING
The vibrators must be adapted to your application by adjusting the unbalances.
You can directly influence the oscillation band
width, centrifugal force and current
consumption, see chap. 8 "Adjustment of unbalances".
Retightening:
Screw connections must be checked and, if necessary, retightened after 1
h
operating time (after initial
commissioning) and thereafter regularly (generally
monthly).

16
8 Adjustment of unbalances
IMPORTANT
For all vibrators of the series NEA and NEG, there is the possibility of unbalance
adjustment.
Unless otherwise specified by you, the units were delivered with the standard
setting (100 %).
By adjusting the unbalances, you can directly influence oscillation band
width,
centrifugal force and current consumption.
WARNING
For all devices, the unbal-
ances may only be set mir-
ror-symmetrically!
The tables below show the type of unbalance and the number of unbalances per vibrator at
the default setting of 100%.
Type
Unbalance
Typ
e
Quantity
50 Hz
60 Hz
NEA 504
XL
8
8
NEA 5020
XL
8
8
NEA 5050
XL
18
18
NEA 5060
XLs
4
4
NEA 50120
XLs
6
6
NEA 50200
XLs
10
8
NEA 50300
XLs
8
6
NEA 50550
XLs
10
6
NEA 50770
XLs
8
6
NEA 2530
XLs
6
6
NEA 2570
XLs
16
10
NEA 25210
XS
4
4
NEA 25420
XS
4
4
NEA 25540
XS
4
4
NEA 25700
XS
4
4
Type
Unbalance
Typ
e
Quantity
50 Hz
60 Hz
NEG 5020
XL
8
8
NEG 5050
XL
18
18
NEG 5060
XLs
4
4
NEG 50120
XLs
6
6
NEG 50200
XLs
10
8
NEG 50300
XLs
8
6
NEG 50550
XLs
10
6
NEG 50770
XLs
8
6
NEG 501140
XLs
12
8
NEG 501540
XLs
12
8
NEG 501800
XLs
14
10
NEG 502020
XLs
16
10
NEG 502270
XLs
18
12
NEG 503400
XLs
12
8
NEG 503820
XLs
14
10
NEG 506220
XS
4
4
NEG 508830
XS
4
4
Type
Unbalance
Typ
e
Quantity
50 Hz
60 Hz
NEG 2530
XLs
6
6
NEG 2570
XLs
16
10
NEG 25210
XS
4
4
NEG 25420
XS
4
4
NEG 25540
XS
4
4
NEG 25700
XS
4
4
NEG 25930
XS
4
4
NEG 251410
XS
4
4
NEG 251800
XS
4
4
NEG 252060
XS
4
4
NEG 252370
XS
4
4
NEG 253050
XS
4
4
NEG 253720
XS
4
4
NEG 254310
XS
4
4
NEG 254900
XS
4
4
NEG 256460
XS
4
4
NEG 258040
XS
4
4
NEG 258260
XS
4
4
NEG 2511210
XS
4
4
NEG 2513850
XS
4
4
NEG 1630
XLs
8
8
NEG 1690
XS
4
4
NEG 16190
XS
4
4
NEG 16310
XS
4
4
NEG 16410
XS
4
4
NEG 16500
XS
4
4
NEG 16810
XS
4
4
NEG 161130
XS
4
4
NEG 161420
XS
4
4
NEG 161610
XS
4
4
NEG 162110
XS
4
4
NEG 162550
XS
4
4
NEG 163030
XS
4
4
NEG 163820
XS
4
4
NEG 164700
XS
4
4
NEG 165190
XS
4
4
NEG 166270
XS
4
4
NEG 166670
XS
4
4
NEG 167890
XS
4
4
NEG 168500
XS
4
4
NEG 169510
XS
4
4
NEG 1612060
XS
4
4
NEG 1613890
XS
4
4
NEG 1617000
XS
4
4
Type
Unbalance
Type
Quantity
50 Hz
60 Hz
NEG 12100
XS
4
4
NEG 12180
XS
4
4
NEG 12230
XS
4
4
NEG 12460
XS
4
4
NEG 12640
XS
4
4
NEG 12900
XS
4
4
NEG 121430
XS
4
4
NEG 122150
XS
4
4
NEG 122640
XS
4
4
NEG 122920
XS
4
4
NEG 123530
XS
4
4
NEG 124440
XS
4
4
NEG 127640
XS
4
4
NEG 128520
XS
4
4
NEG 1211070
XS
4
4
NEG 1213160
XS
4
4
NEG 1217670
XS
4
4
Procedure:
•Switch off vibrator,
secure against unin-
tentional starting and
ensure that there is
no voltage.
•Loosen both covers
for the unbalances.
•Loosen the locking
nuts or locking
screws.
•Adjust the lamella
discs or cast-iron un-
balances as required.
•Retighten the locking
nuts or locking
screws.
•Fasten the covers for
the unbalances.

17
Unbalance discs of the type XL
The centrifugal force is adjustable with the unbal-
ance lamella discs of type XL in the following
steps:
Number of unbalance discs per side
15
100
14
93
13
87
100
centrifugal force in %
12
80
92
11
73
85
100
10
67
77
91
100
9
60
69
82
90
100
8
53
62
73
80
89
100
7
47
54
64
70
78
88
100
6
40
46
55
60
67
75
86
100
5
33
38
45
50
56
63
71
83
100
4
27
31
36
40
44
50
57
67
80
100
3
20
23
27
30
33
38
43
50
60
75
2
13
15
18
20
22
25
29
33
40
50
1
7
8
9
10
11
13
14
17
20
25
30
26
22
20
18
16
14
12
10
8
Default number of unbalance discs per vibrator
There are 2 possibilities to adjust the unbalances:
1. The unbalance adjustment (fine adjustment) is carried out by removing one lamella disc on
each side. All centrifugal values in % can be adjusted as specified in the table.
The removed lamella discs must be replaced by compensation washers (available from
NetterVibration) of identical thickness and identical inner diameter.
2. The unbalance adjustment (coarse adjustment) is performed by turning one lamella disc on
each side by 180° on the shaft.
Twice the number of lamella discs turned by 180° becomes ineffective.

18
Unbalance lamella discs of the type XLs
Adjustment of the unbalances
is carried out according to a scale disc or the supplementary
sheet in the terminal box of the unit. By rotating the outer, adjustable unbalance disc(s) to
another position, the percentage of the centrifugal force changes as shown in the illustration
below. The grid position is defined by position pins.
Settings:
Example:
The NEG 50120/50 Hz has a total of 6 unbalance
discs (3 disc
s per side: 2 fixed, 1 adjustable). If a
centrifugal force of 88% is desired, the adjustable
unbalance discs are rotated anti
clockwise on
both sides into the fourth grid position.

19
Unbalance discs of the type XS
The unbalance setting of the unbalance discs of the type XS is car-
ried out on the scale on the fixed unbalance.
The centrifugal force can be steplessly adjusted by turning the outer
unbalance discs and adjusting them at the partial strokes. After ad-
justing the unbalances, the nuts and screws
must be tightened with
the specified torque.
The centrifugal force can be adjusted with the unbalance discs
of the
type XS according to the following table:
adjustment
centrifugal force
in %
0°
100
15°
98,5
30°
97
45°
92
60°
87
75°
78,5
90°
70
adjustment
centrifugal force
in %
105°
60
120°
50
135°
37,5
150°
25
165°
12,5
180°
0
Recommended average tightening torques for fastening screws and nuts [Nm]
Screw type
M6
M8
M10
M12
M16
M20
M22
M24
strength class 8,8 *
10
25
50
87
210
411
559
711
strength class 12,9 **
-
-
43
84
148
370
700
1250
* coefficient of sliding friction µ= 0,14 ** coefficient of sliding friction µ= 0,15
For screw types M8 to M14 strength class 12.9 is used as standard.

20
9 Troubleshooting
IMPORTANT
Troubleshooting may only be carried out by authorised qualified staff.
The qualified personnel must only use tools suitable for the application.
Fault
Possible cause
Troubleshooting
Action
Vibrator does
not start or
runs at too
low speed
Phase interruption Check fuse and
connecting cable Replace fuse and/or connect- ing cable
Mains voltage too low Check mains voltage and
cable cross-section
Check if mains voltage is cor-
rect,
replace cable
Vibrator
speed drops
under load
Wiring wrong
Check circuit diagram
Inadequate contact of a
connection point Check connection in terminal box Tighten terminal nuts
Phase interruption Check fuse and
connecting cable Replace fuse or connecting cable
Incorrectly dimensioned
connecting cable Check cable cross- section Replace cable
Overload
Check setting of
unbalances
Reduce unbalances
Mains voltage too low
Check mains voltage and
cable cross-section
Check if mains voltage is cor-
rect, replace cable
One phase
without
current
Phase interruption Check the connecting
cable Replace cable
Excessive
heating of
stator
winding
Wiring wrong
Check circuit diagram
Overload
Mains voltage too low
Check mains voltage and
cable cross-section
Check if mains voltage is cor-
rect, replace cable
Vibrator
hums Phase interruption
Check fuse, mains voltage
and connecting cable
Correct mains voltage,
replace fuse and/or cable
Short-circuit between turns
in the stator winding
Replace vibrator
Circuit
breaker fails
when
switched on
Phase interruption
Check fuse and
connecting cable
Replace fuse and/or cable
Overload Check unbalance settings Reduce unbalance
Short circuit in winding
Replace vibrator
High current
consumption
Natural resonance range of
vibration system
Measure current
consumption
Stiffen device
Bounce impacts
Measure current
consumption
Reduce power of vibrator
Loose fastening
Tighten screws
Bearings too
warm
Too much grease in
bearings
Fill in correct amount of grease:
Klueber Staburags NBU 8 EP.
No grease in bearings
Fill in correct amount of grease:
Klueber Staburags NBU 8 EP.
Foreign body in bearings
Clean bearings, replace if necessary.