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Operating instructions for
Netter Electric External Vibrators
series NEA/NEG/NEG S/NES
Sept. 2020
No. 1929E
Page 1/35
These operating instructions apply to:
Series NEA
Series NEG
Series NEG S
Series NES
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Contents
1 General information 3
2 Safety 6
3 Technical data 11
4 Design and function 13
5 Transport and storage 14
6 Installation 15
7 Start-up and operation 19
8 Maintenance and servicing 26
9 Troubleshooting 31
10 Spare parts and accessories 33
11 Disposal 35
Please refer to the delivery note for the scope of delivery.
Check the packaging for possible transport damage. In the event of
damage to the packaging, check the contents for completeness and
possible damage. Inform the carrier in the case of damage.
The Electric External Vibrators of the series NEA, NEG, NEG S and
NES are hereafter referred to as "NEA/NEG".
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Directives /
standards
observed
1 General information
Before installing the NEA/NEG read these instructions carefully. It is the
basis for any action when dealing with the NEA/NEG, and may be used for
training purposes. The instructions should be subsequently stored at the
operation site.
The target group for these instructions is technical staff, who have basic
knowledge of mechanics, electrics and explosion protection.
Only complying technical staff may work on the NEA/NEG.
The NEA/NEG may only be installed, put into operation, maintained, trou-
bleshot and disassembled by persons authorised by the operator.
This documentation is protected by copyright.
Netter
Vibration reserves all rights such as translations, reprinting and re-
production of the instructions, as well as parts thereof.
All technical information, data and instructions for installation, operation
and maintenance in these instructions are based on the latest information
available at the time of printing and take our past experience to the best of
our knowledge into account.
No claims can be derived from the information, illustrations and descriptions in these operating instructions.
The manufacturer does not assume liability for damages resulting from:
failure to observe the instructions,
improper use,
unauthorised repairs,
technical modifications,
use of non-permissible spare parts.
Translations are made to the best of our knowledge.
Netter
Vibration does not assume liability for translation errors, even if the
translation was made by us or on our behalf. Only the original German text
remains binding.
The Electric External Vibrators of the series NEA, NEG, NEG S and NES
comply with the EC Machinery Directive 2006/42/EC, the electromagnetic
compatibility directive 2014/30/EU and the low voltage directive
2014/35/EU.
In particular the standards EN ISO 12100, EN 60529 and DIN EN 60034-1
has been observed.
All Electric External Vibrators of the series NEA, NEG, NEG S and
NES, labelled with the Ex-Symbol on the type plate, comply with the ATEX
Directive 2014/34 EU for equipment group II.
NEA/NEG of housing size 50 and 60 are suitable for use in potentially explosive areas of the category 3D in the zone 22.
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indicates an immediate danger.
Disregard of this notice will result in death or severe person-
al injuries.
indicates a potential danger.
Disregard of this notice can result in death or severe per-
sonal injuries.
indicates a potentially dangerous situation.
Disregard of this notice can result in minor or moderate per-
sonal injuries.
indicates potential material damage.
Disregard of this notice can result in material damage.
Instruction
and warning
symbols
NEA/NEG from housing size 100 upwards are suitable for use in potentially explosive areas of the category 2D in the zone 21 and 22.
In particular the standards DIN EN IEC 60079-0 and DIN EN 60079-31
(IEC 60079-31) are observed.
Before using the NEA/NEG the operator must exclude the possibility that
the introduction of vibrational energy poses the risk of explosion.
The following instruction and warning symbols are used in these instructions:
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indicates actions, methods or notes that are not relative to safety, e.g. useful information and tips.
Environmentally safe disposal
indicates the obligation of environmentally safe disposal.
Explosion prevention
indicates information on explosion prevention.
When operating the NEA/NEG in potentially explosive areas all notes,
marked with the Ex-symbol , must be observed.
Explanations of abbreviations in the type designation:
XXX YYZZZZ-WWW
XXX indicates the type of vibrator (three-phase or single-phase):
NEA = single-phase alternating current
NEG = 3-phase alternating current
NES = 3-phase alternating current (stainless steel housing)
YY indicates the polarity:
50 = 2 poles
25 = 4 poles
16 = 6 poles
12 = 8 poles
ZZZZ indicates the centrifugal force in daN (Decanewton).
WWW indicates special features:
K = 130°C PTC thermistor installed (standard from housing size 170
upwards)
K2 = 120°C PTC thermistor installed
TS = 130°C thermal protector with a normally closed (NC) switching
contact
TS2 = 120°C thermal protector with a normally closed (NC) switching
contact
H = 200-240V anti-condensation heater 0-50W
H110 = 100-120V anti-condensation heater 0-50W
HD = Fully encapsulated stator (heavy duty)
Suffix S behind the type designation = stainless steel housing
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2 Safety
Netter
Vibration assumes no liability for personal injuries and material
damages if technical changes to the product were made or the notices and
regulations in these instructions were not observed.
Electric shock
An electric shock will result in serious injury or even death.
The NEA/NEG must be free of voltage during assembly,
start-up, maintenance and troubleshooting.
Observe the following five safety rules:
1. Disconnect the NEA/NEG from the mains supply.
2. Secure the NEA/NEG against re-activation.
3. Establish that the NEA/NEG has no voltage.
4. Earth and short-circuit the power supply of the NEA/NEG.
5. Cover adjacent live parts or fence them off.
Qualification
of qualified
personnel
The NEA/NEG are intended for generating circular vibrations.
General applications are: loosening, conveying, sorting, compacting, sepa-
rating bulk materials and reducing friction. NEA/NEG are used for emptying bunkers, as drives for conveyor troughs, sieves and vibrating tables.
The NEA/NEG are designed for installation in machines and may only be
put into operation, if it has been assured that the complete machine complies with the regulations of the machinery directive.
Any other use is considered improper.
Installation, commissioning, maintenance and troubleshooting of the
NEA/NEG may only be performed by authorised qualified personnel.
All handling of the NEA/NEG is the responsibility of the operator.
All accessory parts connected to the NEA/NEG, which ensure correct
operation and safety, must have the appropriate degree of protection for
this specific purpose.
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Risk of electric shock due to high voltage
An electric shock leads to serious injuries or even death.
Observe the permissible protection class and earthing.
The NEA/NEG may only be operated with the correct
connection of the protective conductor.
Perform all work only with insulated tools suitable for the
application.
All work on the system may only be carried out in a volt-
free state.
Never open the terminal box cover when voltage is ap-
plied.
Never loosen or remove paint-sealed screws.
Never touch or remove safety covers.
Protect the NEA/NEG against falling parts during all
work. Metal parts can cause a short circuit within the
NEA/NEG.
Spark formation
Opening the terminal box cover of the NEA/NEG in Exzones can cause spark formation and thus lead to an explosion due to ignition of an explosive atmosphere.
Never open terminal box covers in a potentially explosive
atmosphere or when voltage is applied.
If terminal box covers or unbalance covers are open,
check the condition and correct positioning of the seals.
Damaged seals must be replaced immediately.
The mechanical protection of the housing (IP6X) must be
assured after assembly of the covers.
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Spark formation
The impact of corroded steel parts on the aluminium housing at high speed can cause spark formation and thus lead
to an explosion.
Choose the installation position carefully, so that there
are no external impacts.
Fasten the NEA/NEG securely.
Check the fastening regularly (generally monthly).
Hazard of electrostatic discharge
When cleaning the NEA/NEG with a dry cloth there is a risk
of electrostatic discharge. A electrostatic discharge can lead
to an explosion due to ignition of an explosive atmosphere.
Only clean the NEA/NEG with a wet cloth.
Remove dust deposits regularly.
The following warning label is located
on the NEA/NEG and must be observed:
Static electricity
The discharge of charged, isolated conductive parts can
cause ignitable sparks.
Connect the earthing screw of the NEA/NEG to the po-
tential equalisation of the higher-level machine.
Include all components in the potential equalisation of
the machine.
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Hot surface
If the permissible operating conditions and the maintenance
requirements are not observed or if the vibrator does not fit
the application, the housing surface may become very hot.
In Ex-zones there is a risk of ignition of an explosive atmosphere due to hot surfaces.
Observe all permissible operating conditions.
Carry out the specified maintenance work at the prede-
fined intervals.
Make sure that the vibrator is suitable for the application
and has been dimensioned correctly. Get advice from
application technicians of
Netter
Vibration.
For operating the NEA/NEG in potentially explosive at-
mosphere, it is mandatory to connect the PTCthermistor. This regulation does not apply if the vibrator
is not equipped with a PTC-thermistor.
Risk of injury while handling heavy parts
Risk of serious injury due to weight during transport and installation of the
NEA/NEG.
Observe the weight information in Chapter Technical data, from page
11 on.
Only qualified personnel may transport and install the NEA/NEG.
Use suitable load handling devices and slinging equipment.
Wear suitable personal protective equipment.
NEA/NEG from housing size 170 upwards are equipped with thermistors
type PTC 130 °C as standard. For smaller NEA/NEG available on request
as initial equipment.
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Falling parts
The NEA/NEG or parts of the construction can come loose due to vibration. Falling parts can lead to severe personal injuries.
Use only suitable fastening screws and safety washer to attach the
NEA/NEG.
For attachment
Netter
Vibration recommends using
Netter
fastening
kits NBS.
Check the fastening screws after one hour of operation and thereafter
regularly (generally monthly).
Retighten the fastening screws, if necessary. Use a torque wrench and
tighten the screws crosswise.
In critical installation situations suitable securing is mandatory.
Risk of injury due to rotating unbalances
During operation of the NEA/NEG without unbalance covers there is risk of
injury due to rotating unbalances.
Operate the NEA/NEG only with mounted unbalance covers.
Risk of burns due to hot surfaces
NEA/NEG can strongly heat up during operation. Direct contact may cause
burns.
Do not touch the NEA/NEG or the cable near the cable gland during
operation or shortly after being switched off.
Only operate the vibrators within the permissible ambient temperature,
according to Ch. Technical data, page 11.
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Nominal voltage, nominal
frequency
The main voltage and the main frequency must comply with the nominal voltage and nominal frequency indicated on the type plate.
Permissible Voltage deviation: +/- 5 %
Permissible frequency deviation: +/- 2 %
Possible power supply with:
fixed voltage and frequency or
frequency converter
The operation of NEG with frequency converters allows rotary speeds
> nominal frequency. If the NEG are operated with a frequency converter, the maximum centrifugal force must not be exceeded (according to the type plate). The compliance with the electromagnetic compatibility directive 2014/30/EU has to be ensured.
In the ATEX-zones 21 and 22 the frequency converter may regulate the frequency between 20 Hz and 50 Hz or 20 Hz and 60 Hz at a
constant torque load (linear volt-hertz-curve). Please observe the max.
frequency on the type plate. For operation with frequency converter in
ATEX-zones the PTC thermistor must be connected.
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 temperatur*
-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 %. For
the following operation modes special requirements apply:
cycled operation or
frequency-controlled operation or
synchronous operation.
These must be clarified with
Netter
Vibration on a case-by-case basis.
Thermal overload protection
From housing size 170 upwards with thermistor type PTC 130 °C as
standard.
For smaller vibrators available on request as initial equipment.
If the NEA/NEG is operated in environments with potentially explosive dust (zone 21/22), it is mandatory to connect the PTC-thermistor.
This regulation does not apply if the unit is not equipped with a PTCthermistor.
Depending on type ≤ 70 dB(A)
The sound level is determined to a great extent by the surface upon
which the NEA/NEG is mounted (e.g. sheet metal). The sound level will
be amplified by non-silenced sheet metal.
Permissible
operating
conditions
3 Technical data
* Higher temperatures are only possible after consultation with and written approval from the application technicians of NetterVibration.