NetterVibration NVV Series User manual

Operating instructions for
Netter pneumatic internal vibrators
Series NVV
April 2021
No. 1991
Page 1/19
These operating instructions apply to:
NVV 28
NVV 35
NVV 45
NVV 55
NVV 65
NVV 75
NVV 85
NVV 100
NVV 150

2
Contents
1General information 3
2Safety 5
3Technical data 7
4Design and function 9
5Transport and storage 10
6Start-up and operation 11
7Maintenance and servicing 13
8Troubleshooting 15
9Spare parts and accessories 16
10 Disposal 18
11 Annex 19
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 pneumatic internal vibrators of the series NVV are hereafter re-
ferred to as "NVV".
Document no.
1991
Version no.
1
Date of issue
April 2021
Scope of
delivery
Designation
Version of
document

General information
3
1 General information
Before installing the NVV read these instructions carefully. It is the basis
for any action when dealing with the NVV, 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 in pneumatics and mechanics.
Only complying technical staff may work on the NVV.
The NVV may only be installed, put into operation, maintained, troubleshot
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 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.
The pneumatic internal vibrators of the series NVV comply with the EC
Machinery Directive 2006/42/EC.
In particular, the standard EN ISO 12100 has been observed.
Use and
storage
Target group
Copyright
Limitation of
liability
Directives /
standards
observed

General information
4
The following instruction and warning symbols are used in these instruc-
tions:
DANGER
indicates an immediate danger.
Disregard of this notice will result in death or severe person-
al injuries.
WARNING
indicates a potential danger.
Disregard of this notice can result in death or severe per-
sonal injuries.
CAUTION
indicates a potentially dangerous situation.
Disregard of this notice can result in minor or moderate per-
sonal injuries.
NOTICE
indicates potential material damage.
Disregard of this notice can result in material damage.
IMPORTANT
indicates actions, methods or notes that are not relative to safety, e.g. use-
ful information and tips.
Environmentally safe disposal
indicates the obligation of environmentally safe disposal.
Instruction
and warning
symbols
Personal
injuries
Material
damages
Notes

Safety
5
2 Safety The NVV are intended for generating radial vibrations.
NVV are used for compacting concrete or bulk materials, for cleaning or
deaerating.
The NVV may also be used outdoors as well as in dusty and humid envi-
ronment.
The NVV have to be submerged in bulk materials or in liquids.
Any other use is considered improper.
Installation, commissioning, maintenance and troubleshooting of the NVV
may only be performed by authorised qualified personnel.
All handling of the NVV is the responsibility of the operator.
WARNING
Falling parts
The NVV can fall down during transport and operation. Falling parts lead
to severe personal injuries.
➢Wear suitable personal protective equipment.
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 regularly (generally monthly).
➢Retighten the hose lines, if necessary.
➢Ensure that the compressed air is disconnected from the supply lines
during all work on the NVV.
➢Prevent the NVV from being switched back on during all work.
WARNING
Sound level
Near the NVV or in the vicinity of the constructions connect-
ed with the NVV, 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.
Intended use
Qualification
of qualified
personnel
Falling parts
Compressed
air
Sound level

Safety
6
WARNING
Risk of injury while handling heavy parts
Risk of serious injury due to weight during transport and operation of the
NVV.
➢Observe the weight information in Chapter Technical data, from page 7
on.
➢Wear suitable personal protective equipment.
WARNING
Damage to health due to vibration energy
Vibrating of whole bodies or any parts of them will result in damage to
health.
➢During operation of the NVV, only touch/hold the hose outside a suffi-
cient safety distance (of at least 1 m) to the vibrator's nosepiece.
➢Never touch the vibrator's nosepiece during operation.
➢Limit the exposure time, take breaks during operation and wear suita-
ble personal protective equipment.
➢Never stand or sit on the NVV during operation.
CAUTION
Risk of burns due to hot surfaces
NVV can strongly heat up during operation. Direct contact may cause
burns.
➢Do not touch the vibrator's nosepiece during operation or shortly after
being switched off.
➢Only operate the NVV within the permissible ambient temperature, ac-
cording to chap. Technical data, page 7.
CAUTION
Health and environmental risk due to oil mist during preserving
Oil mist is harmful to human health and the environment. Oil mist can
cause damage to the skin, the mucous membranes and the respiratory
system.
➢Avoid direct contact with oil mist.
➢In order to preserve the NVV 150 before storage, wear suitable per-
sonal protective equipment.
➢Take measures to avoid release of oil mist into the environment.
Heavy parts
Vibration
energy
Hot surfaces
Oil mist

Technical data
7
3 Technical data
Drive
medium
NVV must be operated with filtered (filter ≤ 40 µm), lubricated com-
pressed air or lubricated nitrogen according to the following specifi-
cation:
ISO 8573-1
[ x
:
6
:
4 ]
Filter > 10 µm
Humidity,
pressure dew point ≤ +10 °C
Total oil content
≤ 5 mg/m3
Lubrication
ISO viscosity class according to DIN ISO 3448, VG 15 or
SAE viscosity class 5
Fill the mist lubricator with acid- and resin-free compressed air oil.
Ambient
temperature*
-10 °C to 60 °C
Operating pressure
2.0 to 6.0 bar
* Higher temperatures are only permitted after consultation with and the written consent of application engi-
neers from NetterVibration.
For technical performance data, please refer to the brochure of the NVV.
The technical performance data changes over the service life (wear and
contamination).
Netter Vibration recommends the following cross-sections:
Typ:
NVV ...
Connection thread
[inch]
Valve/ball valve
[inch]
Minimum hosesize*
28, 35, 45, 55
3/4
G 1/4
DN 8
65, 75, 85
G 3/8
DN 10
100, 150
G 1/2
DN 12
* DN = diameter nominal (inner diameter)1
Permissible
operating
conditions
Performance
data
Valves / hoses

Technical data
8
Type
Ø A
[mm]
L
[mm]
Total length*
[mm]
Weight
[kg]
NVV 28
28
234
2,584
4.5
NVV 35
35
278
2,628
6.0
NVV 45
45
285
2,635
8.0
NVV 55
55
316
2,666
9.0
NVV 65
65
327
2,677
10.0
NVV 75
75
366
2,716
15.0
NVV 85
85
395
2,745
19.0
NVV 100
100
395
2,745
23.0
NVV 150
150
508
1,400
38.0
* hose and handpiece included
Dimensions

Design and function
9
4 Design and function
1
Vibrator's nosepiece
2
Vane
3
Rotor
4
Housing
5
Rear body
6
Hose
P
Compressed air
The NVV generate radial vibrations, i.e. the vibrations act in all directions
of a plane.
The frequency and therefore also the centrifugal force are infinitely varia-
ble via the operating pressure.
The vibration is produced by a rotor (3) that is eccentrically driven around
the shaft.
The incoming compressed air (P) flows axially through the rotor by an in-
ternal bore and pushes the movable vane (2) radially against the hous-
ing (4). Through the channels of the vane the compressed air is fed into
the housing where it fills the space to form an air chamber. The constant
air supply increases the volume of the air chamber, causing the rotor to
rotate within the housing. The compressed air chamber is continuously
vented by discharging the air through the exhaust in the handpiece.
Design
Function

Transport and storage
10
5 Transport and storage
Observe the safety instructions in chap. Safety, from page 5 on.
Special conditions of transport are not required.
The NVV are packed and ready for assembly. Accessories and add-on
parts are delivered unmounted, unless otherwise agreed upon.
The packaging protects the NVV from transport damage. The packaging
material has been selected from an environmentally safe and technically
disposable point of view and is therefore recyclable.
The return of packaging to the material cycle conserves raw materials and
reduces the amount of waste.
•Store the NVV in a dry and clean environment.
•Protect the NVV from UV-exposures, weather and ozone.
•The storage temperature is between -20 °C and +60 °C.
•Hang the NVV 28 - 100 with the vibrator's nosepiece upwards and
leave the manual valve open to drain out any water or dirt.
•Before storage of the NVV 150:
1. Fill the housing of the NVV with approx. 60 ml of oil as shown in the
permissible operating conditions (see chap. Technical data, page 7
"Lubrication").
2. Run the NVV for 30 s.
Caution: Health and environmental risk due to escaping oil mist
3. Hang the NVV with the vibrator's nosepiece upwards and the man-
ual slide valve open to drain out any water or dirt.
Transport
conditions
Packaging
Storage
conditions

Start-up and operation
11
6 Start-up and operation
Observe the safety instructions in chap. Safety, from page 5 on.
Please refer to chap. Technical data, page 7 for permissible operating
conditions.
For all NVV, use a ball valve to shut off the main line and
•a maintenance unit with mist lubricator for NVV 150,
•a filter regulator for all other types of NVV (with an integrated mist lu-
bricator).
Use the pressure control valve of the filter regulator/maintenance unit to
set the operating frequency of the NVV.
By reducing the operating pressure, the centrifugal force is also reduced.
At the same time the vibration amplitude remains almost constant.
Fill the lubricator body with approx. 60 ml of oil corresponding to the per-
missible operating conditions (see page 7; "Lubrication").
Notice: The NVV is ready for operation only after filling and correct func-
tioning of the mist lubricator.
Before initial start-up, also pour 4-6 drops of oil onto the sieve of the claw
coupling of the NVV.
When starting-up the NVV carry out the following steps in succession:
1. Close the ball valve.
2. Close the manual (slide) valve of the NVV. For NVV 28 - 100, turn the
manual valve clockwise while looking at the claw coupling.
3. Connect the claw coupling.
4. Open the ball valve.
5. Open the manual (slide) valve, for NVV 28 - 100 by turning it anti-
clockwise.
IMPORTANT
If the NVV does not start, the vibrator's nosepiece should be briefly tapped
onto a firm surface.
Permissible
operating
conditions
Standard
installation
Setting the
frequency
Filling mist
lubricator
Initial
lubrication
Procedure
Tap to start

Start-up and operation
12
Check that the following steps have been carried out:
Screw connections checked before start-up?
Use of ear protection ensured?
Ball valve, filter regulator/maintenance unit and supply line in-
stalled?
Desired frequency set on pressure control valve?
Mist lubricator filled?
After one hour of operation:
Hose supply connections checked, retightened, if necessary?
Then follow the maintenance plan.
After four hours of operation:
Mist lubricator refilled?
Then follow the maintenance plan.
Checklist
start-up

Maintenance and servicing
13
7 Maintenance and servicing
Observe the safety instructions in chap. Safety, from page 5 on.
To clean the NVV, proceed as follows:
1. Close the supply air opening and the handpiece.
2. Clean the NVV externally with a jet of water.
3. Activate the NVV briefly.
Maintenance of the NVV must be carried out as follows:
Interval
Action
After one hour of opera-
tion after initial start-up
Check hose screw connections and hose fittings, retighten if
necessary.
Before each start-up
Check hose supply connections for damage, permeability and
kinks. If necessary, clean and remove kinks or replace.
After every four hours of
operation
Check the function of the mist lubricator. Refill oil.
Monthly
Check hose screw connections and hose fittings, retighten if
necessary.
Check the function of the NVV.
2
The maintenance intervals depend essentially on the operating conditions,
the service life and how clean the drive medium is.
Unfiltered compressed air leads to high wear, clogging of the silencer or
complete breakdown of the NVV.
The rotor should be replaced if its length is below
•109.8 mm for NVV 150,
•129.7 mm for all other types of NVV.
The vibrator's nosepiece and the vane should be replaced if they show
signs of excessive wear.
Cleaning
Maintenance
plan
Maintenance
intervals
Wear criteria

Maintenance and servicing
14
1
Vibrator's nosepiece
2
O-ring
3
Housing
4
Rotor
5
Milled slot in the rotor
6
Vane
7
Slot (hidden)
8
Running face(s)
9
Front closure plate
(only for NVV 150)
The replacement of the vane/the rotor has to be carried out as follows:
1. Clamp the housing (3) in a vice, using appropriate chuck jaws
(prisms), and unscrew the vibrator's nosepiece (1; right-hand thread).
2. Only for NVV 150:
Remove the front closure plate (9) using a 16 mm extractor (available
on request).
3. Remove the housing from the vice and tilt slightly so that the rotor (4)
drops into your hand without being damaged.
4. Examine and clean the parts. Criteria for replacement see page 13.
5. Replace the vane (5)/the rotor. Ensure that the vane is easy to move
and 0.1 to 0.15 mm shorter than the rotor. Otherwise, it must be
shortened so that it does not protrude from the ends of the rotor. The
open channels of the vane must point away from the milled slots in the
rotor (5).
6. Lightly oil the running faces (8) of the rotor.
7. For assembly, place the housing on a solid surface, put the rotor with
vane into the housing. Ensure that the running face without slot points
to the nosepiece.
8. Only for NVV 150:
Insert the front closure plate in the housing.
9. Fit a new O-ring (2) onto the nosepiece and screw the nosepiece on
the housing.
Replacement
of the vane/
the rotor

Troubleshooting
15
8 Troubleshooting
In the case of malfunctions of the NVV proceed as follows:
Malfunction
Possible cause
Corrective action
NVV does
not start
Compressed air
supply
Check if there is enough pressure at the NVV.
Check the pressure control valve.
Wrong position of
the rotor
Briefly tap the vibrator's nosepiece onto a firm sur-
face.
Vane jammed, too
long, missing or
incorrectly inserted
Check position and length of the vane (see chap.
Maintenance, page 14).
Hose defective or
torn off
Check the hose for damage and for correct fixing,
as well in the handpiece (through the inspection
window).
NVV has too
little power
Line cross-sections
Observe the recommended cross-sections
(see chap. Technical data, page 7).
Check air pressure and supply lines.
Wear
Check the vane (see chap. Maintenance, page 14)
and the rotor for visible wear. For wear criteria, see
page 13.
In addition, check the function of the mist lubricator.
Power loss
NVV polluted
Clean the NVV (see chap. Maintenance, page 13).
Malfunctions
and causes

Spare parts and accessories
16
9 Spare parts and accessories
Please provide the following details when ordering spare parts:
•type of NVV
•position number of spare part
•required amount
Ordering of
spare parts
NVV 28 - 100

Spare parts and accessories
17
NVV 150

Disposal
18
10 Disposal
All parts of the NVV must be properly disposed of according to
the material specifications. The valid disposal prices of the
NVV are available on request.
All parts of the NVV can be recycled.
Material
Part
Steel
Housing, rotor, vibrator's nosepiece
Aluminium
Handpiece
Plastics
Vane, hose
Prices
Material
specifications

Annex
19
11 Annex
Declaration of Conformity