NetterVibration NTS Series User manual

Operating instructions for
Netter pneumatic linear vibrators
Series NTS
Jan. 2021
No. 1895E
Page 1/9
Version 1
These operating instructions apply to:
Version 1
aluminium housing
Version 2
steel housing
NTS 80
NTS 120 HF
NTS 120 NF
NTS 180 HF
NTS 180 NF
NTS 250 HF
NTS 250 NF
NTS 350 HF
NTS 350 NF
NTS 100/01
NTS 75/01
NTS 50/01
NTS 70/02
NTS 54/02
NTS 50/04
NTS 21/04
NTS 50/08
NTS 50/10
NTS 30/10
NTS 50/15
NTS 50/20
NTS 30/20
NTS 24/20
NTS 50/40
NTS 20/40
Use and storage
Before installing the NTS read these instructions carefully. It is the basis for any action when dealing with
the NTS, and may be used for training purposes. The instructions should be subsequently stored at the
operation site.
Copyright
This documentation is protected by copyright. Netter Vibration reserves all rights such as translations,
reprinting and reproduction of the instructions, as well as parts thereof.

2
1 General information
The pneumatic linear vibrators of the series NTS are hereafter referred to
as "NTS".
Please refer to the delivery note for the scope of delivery.
Check the packaging for possible transport damage. In the event of dam-
age to the packaging, check the contents for completeness and possible
damage. Inform the carrier in the case of damage.
The target group for these instructions is technical staff, who have basic
knowledge in pneumatics and mechanics.
Only complying technical staff may work on the NTS.
The NTS may only be installed, put into operation, maintained, troubleshot
and disassembled by persons authorised by the operator.
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 descrip-
tions 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.
Explanation of additions to names in model designations:
•NTS L: models for oil-free operation
•NTS HT: models for high ambient temperatures
•NTS NT: models for low ambient temperatures
•NTS HF: high frequency models
•NTS NF: low frequency models
The pneumatic linear vibrators of the series NTS comply with the EC Ma-
chinery Directive 2006/42/EC.
In particular, the standard EN ISO 12100 has been observed.
Designation
Scope of
delivery
Target group
Limitation of
liability
Model
designations
Directives /
standards
observed

3
2 Safety The NTS are intended for generating linear vibrations.
General applications are: loosening, conveying, sorting, compacting, sepa-
rating bulk materials and reducing friction. NTS are used for emptying
bunkers, as drives for conveyor troughs, sieves and vibrating tables.
The NTS 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.
The NTS may also be used outdoors and in dusty and humid environ-
ments. The NTS may not be submerged in bulk materials or in liquids.
Any other use is considered improper.
Installation, commissioning, maintenance and troubleshooting of the NTS
may only be performed by authorised qualified personnel.
All handling of the NTS is the responsibility of the operator.
WARNING
Falling parts
The NTS, construction parts as well as fastening and housing screws can come loose due
to vibration. Falling parts lead to severe personal injuries.
➢Check the fastening and housing screws after one hour of operation and thereafter at
regular intervals (generally monthly).
➢Retighten the fastening and housing screws, if necessary.
➢A safety device with a safety cable is mandatory for critical mounting situations.
WARNING
Sound level
Near the NTS or in the vicinity of the constructions connected with the NTS, the sound
pressure level may exceed 80 dB(A). The human ear can be permanently damaged by the
high sound level.
➢When working in the noise area, use ear protection if 80 dB(A) is exceeded.
WARNING
Risk of injury while handling heavy parts
Risk of serious injury due to weight during transport and installation of the NTS.
➢Observe the weight information in Chapter Technical data, from page 4 on.
➢Only qualified personnel may transport and install the NTS.
➢Use suitable load handling devices and slinging equipment.
➢Wear suitable personal protective equipment.
Intended use
Qualification
of qualified
personnel

4
WARNING
Compressed air
A loosened hose which is under pressure can lead to personal injuries.
➢Screw the hose lines on carefully.
➢Check the hose lines and connections after one hour of operation and thereafter regu-
larly (generally monthly).
➢Retighten the hose lines, if necessary.
➢Ensure that the compressed air is disconnected from the supply lines during all work on
the NTS.
➢Prevent the NTS from being switched back on during all work.
CAUTION
Risk of burns due to hot surfaces during synchronous operation
Housing surfaces and synchronous leads can strongly heat up during synchronous opera-
tion. Direct contact may cause burns.
➢Do not touch housing surfaces and synchronous leads during synchronous operation.
➢Only operate the vibrators within the permissible ambient temperature, according to Ch.
Technical data, page 4.
NOTICE
Operation of the NTS with silencers is mandatory.
Silencers reduce the noise level and protect the NTS from contamination entering.
3 Technical data
Permissible operating conditions
Drive
medium
NTS must be operated with clean, lubricated compressed air or lubricated nitrogen according
to the following specification, according to ISO 8573-1:
[ 5 :
6 :
4 ]
Filter ≤ 5 µm
Humidity, Pressure
dew point ≤ +10 °C
Total oil content
≤ 5 mg/m3
NTS L versions are suitable for operation with oil-free compressed air according to the follow-
ing specification, according to ISO 8573-1:
[ 5 :
6 :
2 ]
Ambient
temperature *
Standard and NTS L-versions
5 °C to 60 °C
NT-version
-20 °C to 40 °C
HT-version
5 °C to 160 °C
Operating
pressure *
2,0 to 6,0 bar
* Higher operating pressures and temperatures are only permitted after consultation with and the writ-
ten consent of application engineers from Netter Vibration.

5
Lubrication
ISO viscosity class according to DIN ISO 3448, VG 5 to 15.
Fill the mist lubricator with acid- and resin-free compressed air oil.
A mist lubricator is recommended by Netter Vibration for all NTS (except NTS L).
Recommendation for temperatures
from 0 °C to 60 °C:
Klüber "AIRPRESS 15"
Specification for temperatures
from 0 °C to -20 °C:
Klüber "ISOFLEX PDP 10"
Specification for temperatures
below -20 °C with NT-versions:
BREAK FREE®CLP
Specification for temperatures above 60 °C
with HT-versions:
Aral „Farolin“
Number of drops for the mist lubricator:
Type NTS
Drops
80, 120, 180
1-3 drops/10 minutes
250, 350
4-8 drops/10 minutes
100/01, 75/01, 50/01, 70/02
1-2 drops/minute
54/02, 50/04, 50/08, 50/10, 50/15, 50/20
3-4 drops/minute
21/04, 30/10, 30/20, 50/40
5-7 drops/minute
24/20
9 drops/minute
20/40
15 drops/minute
Further technical data of the NTS can be found in the brochure on www. Netter Vibration.com.
Connection data
Type:
NTS ...
Mounting
thread or hole*
Tighten-
ing
torque
[Nm]
Air supply line
Air discharge line
Connection
thread [inch]
Hose
size**
Connection
thread [inch]
Hose
size**
80
M5
4
M5
DN 4
M5
DN 6
120
M8
20
G 1/8
DN 6
G 1/8
DN 8
180
M10
35
G 1/8
DN 6
G 1/4
DN 8
250
M12
45
G 1/8
DN 6
G 3/8
DN 8
350
M12
50
G 1/4
DN 6
G 3/8
DN 8
100/01
M12
30
G 1/4
DN 9
G 1/4
DN 10
75/01, 50/01
9 mm*(for M8)
25
G 1/4
DN 9
G 1/4
DN 10
70/02, 54/02
9 mm* (for M8)
25
G 3/8
DN 9
G 3/8
DN 12
21/04, 50/04
13 mm* (for M12)
87
G 3/8
DN 12
G 3/8
DN 16
50/08
17 mm* (for M16)
215
G 3/8
DN 12
G 3/8
DN 16
50/10
18 mm* (for M16)
215
G 3/8
DN 14
G 3/8
DN 16

6
Type:
NTS ...
Mounting
thread or hole*
Tighten-
ing
torque
[Nm]
Air supply line
Air discharge line
Connection
thread [inch]
Hose
size**
Connection
thread [inch]
Hose
size**
30/10
18 mm* (for M16)
215
G 3/8
DN 22
G 3/8
DN 25
50/15, 50/20,
30/20, 24/20
22 mm* (for M20)
430
G 3/8
DN 14
G 3/8
DN 16
20/40
25 mm* (for M24)
740
G 1/2
DN 22
G 1/2
DN 25
50/40
26 mm* (for M24)
740
G 1/2
DN 22
G 1/2
DN 25
* = Mounting hole ** DN = Diameter nominal (inner diameter)
4 Design and function
1
Piston
2
Cover
3
Screw
4
Housing
5
Air outlet /
silencer
6
Start spring
(depending on
the type)
7
Base plate
8
Start connec-
tion (depending
on the type)
9
Air inlet /
grommet
10
Air chamber
There are two versions of the NTS.
Version 1 with aluminium housing and start spring (8) (exception: NTS 21/04).
Version 2 with steel housing and start connection (7).
NTS version 2 units can not start when installed horizontally due to the unfavourable position
of the piston. Therefore, these vibrators have a start connection (7) in the base plate (6), so
that the piston (1) can be pressed by a short pressure surge into the starting position. For this
purpose, an additional pneumatic control is required.
5 Transport and storage
Observe the safety instructions in Ch. Safety, from page 3 on.
Special conditions of transport are not required.
Storage in a dry and clean environment, protected from UV-exposures,
weather and ozone. Storage temperature: -20 °C to 60 °C.
Preserve all NTS apart from the NTS L before storage:
Add anti-corrosion oil to the air inlet. Actuate the NTS briefly when mount-
ed. Close all openings afterwards.
Transport
conditions
Storage
conditions

7
6 Installation
Observe the safety instructions in chap. Safety, from page 3 on.
1
Maintenance unit
(NTS L: without mist lubricator)
2
3/2-way valve
3
NTS
1.
Notice: The NTS must lie completely on the surface. The mounting surface has to be flat
(±0.1 mm flatness) and clean with no paint residues or burn-ins.
Netter Vibration recommends mounting the NTS on a weld-on console or a glueing con-
sole. For operation a 3/2-way valve (minimal valve function) has to be used.
2.
Mount the NTS on the console with one or four fastening screws (depending on the type)
and suitable safety washers. If necessary, additionally use a medium-strength liquid
safety agent to secure the screw connections. Observe the recommended values for
screw sizes and tightening torques.
3.
Fasten the compressed air supply securely. Observe the recommended cross-sections
for valves and hoses. For the air supply, use screw connections with integrated flat seal
or liquid sealant. The air resistance increases with the hose length. The specified nomi-
nal diameters apply to hose lengths up to 3 m. Longer supply lines require larger cross-
sections.
Discharge the escaping air through a hose if necessary (e. g. in dusty environments). To
achieve full performance, the exhaust hose must have a larger nominal size than the
supply hose.
4.
Mount the silencer/silencers.
Synchronous operation
NTS can also be operated synchronously. For further information to synchronous operation
contact Netter Vibration.
7 Start-up and operation
Observe the safety instructions in chap. Safety, from page 3 on.
Observe the permissible operating conditions in chap. Technical data, page 4.
Starting pressure at low temperatures
At ambient temperatures 10 °C higher starting pressures (≥ 2 bar) may be required. Start
the NTS with a higher pressure of approx. 5 bar and then reduce to 2 bar.
Standard
installation

8
Setting the frequency
The frequency of the NTS is set with the pressure regulator of the maintenance unit.
The frequency is reduced by lowering the air pressure before the NTS. The centrifugal force
is hereby also reduced. At the same time the amplitude remains almost constant.
Adjustment of amplitude
If required, install a throttle valve in the exhaust air line in order to adjust the amplitude of the
NTS by throttling the exhaust air. By throttling the exhaust air, the centrifugal force is reduced.
The frequency hereby remains almost constant.
Important: Reduced cross-sections already throttle (observe the nominal diameter).
Reduce the amplitude only up to approx. 50 %. This can cause start-up problems if below.
Setting mist lubricator
Set the mist lubricator to the recommended number of drops while the NTS is running.
Notice: The NTS is ready for operation only after adjustment and correct functioning of the
mist lubricator.
Stop-intervals
During operation at very short stop intervals (< 1 s), it is possible that the NTS will not start
immediately. The reason for this is that the piston has not yet been pushed into the end posi-
tion by the spring (NTS version 1) or by gravity (NTS version 2).
8 Maintenance and servicing
Observe the safety instructions in chap. Safety, from page 3 on.
Maintenance intervals
The maintenance intervals depend essentially on the service life and how clean the drive me-
dium is. Unfiltered compressed air leads to high wear, silencer clogging or complete failure of
the NTS.
Feature NTS 80 - 350
A base-plate is screwed into the housing of NTS 80 to 350. The following bores are in the
base-plate:
•a mounting bore with metric thread,
•two smaller bores to detach and attach the base-plate.
Maintenance plan
Interval
Action
After one hour of
operation after initial
commissioning
Check fastening and housing screws.*
Check hose screw connections and hose fittings, retighten if necessary.
Monthly
Check fastening and housing screws.*
Check hose screw connections and hose fittings, retighten if necessary.
Check hose supply connections for permeability and kinks. If necessary, clean and re-
move kinks.
Check the function of the silencer. Clean silencer.

9
Interval
Action
Monthly
Check the function of the NTS.
Check the function of the mist lubricator. Refill oil if necessary (except for the NTS L).
Clean the filter of the maintenance unit and replace, if necessary.
If necessary
If necessary, clean the surface of the NTS with a wet cloth to remove dust deposits.
* Observe the tightening torques (see Chap. Technical data, from page 4 on).
9 Troubleshooting
Malfunction
Possible cause
Corrective action
No start
Silencer polluted
Clean silencer.
Compressed air supply
Check if there is enough pressure at the NTS. Check valve. A 3/2-
way valve is strictly required, so that the supply line to the NTS is
vented.
Cover loose
A leaky cover leads to standstill of the NTS. Tighten screws.
Line cross-sections
Observe recommended cross-sections (see Chap. Technical data).
Line between valve and
NTS > 3 m
Leads to a slow start and an eventual standstill of the piston in the
middle position. If necessary, put a controlled 3/2-way air valve
before the NTS.
Exhaust air throttled too
much
Open the throttle valve further. Clean silencer.
Thread of grommet is too
long
Check if the housing is deformed. In case of deformed housing,
have the NTS checked by Netter Vibration.
Tension during installation
Ensure a flat contact surface.
Temperature below 5 °C
Use NT-Version..
Missing ventilation of the
housing
Use a 3/2-way valve with adequate cross section.
Rattling
Screws loose
Check fastening and housing screws.
Power loss
Lubrication is missing
Check the function of the mist lubricator.
NTS polluted
Disassemble NTS and clean it.
Wear
Check piston and housing for visible wear. If wear is found, send
the NTS to Netter Vibration or replace it. Check mist lubricator.
Operating pressure too low
If necessary, increase the pressure. Check line cross-sections.
10 Disposal
All parts of the NTS must be properly disposed of according to the material specifications.
The NTS can be properly disposed by Netter Vibration. The valid disposal prices are available on re-
quest.
Depending on the type, the following materials are built into the NTS:
Steel/stainless steel, aluminium, bronze (NTS BK), plastics.
11 Annex
Declaration of Incorporation