PRÜFTECHNIK VIBXPERT Balancing User manual

Version 2.3x
Edition November 2010
VIB 9.806.G
Dear customer,
We are grateful for your trust and hope that you
are happy with our product. If you have any
suggestions for improving this product or this
instruction manual, please let us know.
PRÜFTECHNIK
Condition Monitoring
Fax: [phone]
eMail: [email protected]
VIBXPERT®
FFT Data Collector &
Signal Analyzer
'Balancing'
Operating Instructions

1-2
VIBXPERT Balancing 11.2010
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No liability may be claimed against the publisher regarding the product described in
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Furthermore, under no circumstances may the publisher be held liable for direct or
indirect damage of any kind resulting from use of the product or the manual, even if
the publisher has expressly indicated the potential for occurrence of such damage.
The publisher assumes no liability for any product defects. This warranty and liability
limitation applies to all distributors and sales partners as well.
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property of their owners. Lack of such designation does not imply, however, that
names are not protected by trademark laws.
© 2004 PRÜFTECHNIK Condition Monitoring; all rights reserved

1-3
VIBXPERT Balancing 11.2010
Foreword
Foreword
Congratulations! And thank you for choosing the dynamic balancing
option in one or two planes to expand your VIBXPERT FFT data
collector and signal analyzer*.
The balancing module is based on the well-known "influencing
coefficients method" and is distinguished by its efficiency and ease of
use. The measurement process implemented in the instrument has
been optimized by a new knowledge-based algorithm. Perfectly
matched measurement settings save time-intensive preparation and
also enable the automation of recurrent tasks. Simple operation is
guaranteed by intuitive graphic guidance which leads the user
through the balancing procedure step by step. A number of methods
are available to compensate rotor imbalance: free balancing, fixed
weight, fixed location or tape measure balancing. If necessary,
VIBXPERT can combine all mounted weights into a single new
weight. If you do not wish to attach a balancing weight to the rotor,
VIBXPERT will calculate the mass that should be milled from the
rotor.
And just think! VIBXPERT even grows to meet your future require-
ments. The latest analysis and diagnostic functions are added on a
regular basis and made available as an update. This ensures that you
are always have the most modern equipment.
For further information visit us on the Internet at:
http://www.pruftechnik.com
Ismaning, November 2010
PRÜFTECHNIK Condition Monitoring
* Also called 'VIBXPERT' and 'measure-
ment instrument' in this manual.
About this manual
This manual describes the operation of the measurement device in
the optional "Balancing" mode. The description of the measurement
device and operation in the "Multimode" and "Route" modes appears
in the VIBXPERT operating instructions (VIB 9.805.G).
If you do not have immediate access to this manual, direct help is
contained in the device and can be opened with the HELP key.
This manual is valid for firmware version 2.2x and higher.

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VIBXPERT Balancing 11.2010
Contents
Contents
Chapter 1: Introduction ............................................ 1-5
Intended use .................................................................................................1-5
Symbols .......................................................................................................... 1-5
Safety ............................................................................................ 1-6
Scope of delivery.......................................................................... 1-7
Registration .................................................................................. 1-8
Chapter 2: Balancing ................................................. 2-1
Balancing on machines with rotating masses .............................................2-3
Diagnosis ...................................................................................... 2-4
Preparatory activities ................................................................... 2-5
Assembly ........................................................................................................2-5
Operation ..................................................................................... 2-9
Balancing in one plane .............................................................. 2-11
Measuring the initial imbalance ................................................................2-11
Trial run ....................................................................................................... 2-12
Trim run ....................................................................................................... 2-13
Undoing balancing runs .............................................................................2-14
Balancing in two planes ............................................................ 2-15
Overview of the measurement procedure ................................................ 2-15
Determining the measurement plane & balancing plane A ....................2-15
Measuring the initial imbalance in plane A and plane B ......................... 2-15
Trial run ....................................................................................................... 2-16
Trim run ....................................................................................................... 2-16
Saving the result ......................................................................................... 2-16
Evaluation of the data............................................................... 2-17
Combining balancing weights ................................................................... 2-18
Options for balancing ............................................................... 2-19
Checking the measurement setting ...........................................................2-19
Changing the correction mode .................................................................. 2-19
Fixed location ............................................................................................... 2-19
Fixed weight ................................................................................................. 2-20
Measuring tape ............................................................................................ 2-20
Removing the balancing weight ................................................................2-21
Checking functions ..................................................................................... 2-21
Entering the balancing radius and rotor mass later ................................. 2-22
Influence coefficient ................................................................................... 2-22
Minimizing vibrations at the control plane .............................................. 2-23
Display setup .............................................................................. 2-24
Printing the balancing report ................................................... 2-25
Setup parameters....................................................................... 2-26
Machine setup ............................................................................................. 2-26
Measurement setup .................................................................................... 2-29
Balancing with a control plane ................................................. 2-30
Chapter 3: Appendix ................................................. 3-1
Balancing quality classes and groups of rigid balancing bodies ................ 3-1
Messages during balancing ......................................................... 3-2
Emergency storage ...................................................................... 3-4

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VIBXPERT Balancing 11.2010
Introduction
Chapter 1: Introduction
Intended use
VIBXPERT is intended for use as a portable balancing device for the
balancing of stationary machines equipped solely with rotating
components (rotors), e.g. turbine rotors, inductors, circulating pumps,
centrifugal compressors, fans, etc. This does not include machines
with oscillating components, e.g. all reciprocating machines.
VIBXPERT can be used without any restrictions for the balancing of
rigid rotors. Elastic (soft) rotors may only be balanced with VIB-
XPERT at the resonant frequency (±25%) by an experienced user.
The measurement instrument and its accessories may only be
operated by authorized personnel.
PRÜFTECHNIK Condition Monitoring assumes no responsibility for
any damage arising from improper use.
Symbols
Danger to life and limb.
Danger of improper operation which can cause
damage.
Tips on operation as well as important information
about balancing.

NOTE
ATTENTION
WARNING!

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VIBXPERT Balancing 11.2010
Safety
ATTENTION!
WARNING!
Safety
You must carefully read and understand the safety instructions in the
VIBXPERT operating manual (VIB 9.805.G) as well as the following
safety instructions for balancing before starting work with the
measurement device.
• When assembling measurement components, make sure that no
holders, cables, etc. project into the range of movement of
rotating machine parts.
• The respective manufacturer's instructions must be followed
when mounting balancing weights.
Make sure that attachment points for balancing weights to be
welded on are clean; clamp the ground electrode of the welding
device onto the rotor and not onto the machine.
For balancing weights that need to be screwed on, the maxi-
mum permitted RPM of the motor must be observed.
• The machine must be disconnected in order to work on the
rotor and must be secured against being switched on again in
accordance with the applicable regulations.
• Before the first measurement (initial run), it is important to
ensure that the preparatory activities have been carried out
correctly and completely. In addition to the assembly of
measurement components, particular attention must be paid to
the correct input of parameters in the machine setup. If an
incorrect rotor mass is entered, a trial weight that is too large
may be calculated as a result. This could have serious conse-
quences for personnel and machine!
• No one is allowed to remain in the radial vicinity of the rotor
during balancing runs. This area must be properly secured
against unauthorized entry. If the trial weight of the rotor on a
running machine detaches, there is a risk of fatal injury in this
area!
• If the rotor is in a protective housing, any gaps in the housing
must be closed before switching on the machine.
• The permitted switch-on frequency of the machine may not be
exceeded. Otherwise, the motor could be damaged.
• The cause of the imbalance must be determined before balanc-
ing, and must be corrected if necessary (e.g. remove any caking
on the rotor, weld any cracks on the impeller or replace the
impeller).

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VIBXPERT Balancing 11.2010
Scope of delivery
Scope of delivery
The components described below are included in the scope of
delivery. If a part is missing or is damaged, please contact your
PRÜFTECHNIK representative immediately.
Transducer set for balancing
with 1-channel instrument - VIB 5.387-HW
VIB 3.306 Reflective tape, 10 mm
VIB 3.420 Magnetic holder for curved mounting surfaces
VIB 5.432-2,9 Cable for trigger sensor, 2.9 m
VIB 5.437-2,9 Cable for LineDrive transducer, 2.9 m
VIB 6.147 Mobile industrial accelerometer for low speed, M5
VIB 6.631 Laser-optical trigger sensor
VIB 6.632 Bracket for laser-optical trigger sensor
Transducer set for balancing
with 2-channel instrument - VIB 5.386-HW
VIB 3.306 Reflective tape, 10 mm
VIB 5.432-2,9 Cable for trigger sensor, 2.9 m
VIB 6.631 Laser-optical trigger sensor
VIB 6.632 Bracket for laser-optical trigger sensor
Transducer set for balancing with 2-channel instrument
on low-speed machines - VIB 5.388-HW
VIB 3.306 Reflective tape, 10 mm
VIB 5.432-2,9 Cable for trigger sensor, 2.9 m
VIB 6.147 Mobile industrial accelerometer for low speed, M5
VIB 6.631 Laser-optical trigger sensor
VIB 6.632 Bracket for laser-optical trigger sensor
VIB 3.420 VIB 3.306
VIB 5.437-2,9 TNC
MiniSnap
BINDER
MiniSnap VIB 5.432-2,9
VIB 6.147
VIBXPERT with explosion protection is
delivered with intrisically safe sensors:
- Accelerometer (VIB 6.147 DEX)
- Trigger sensor (VIB 6.631 EX)
VIB 6.331
VIB 6.332

1-8
VIBXPERT Balancing 11.2010
Registration
Registration
The balancing software is already contained in the instrument and
must be activated by entering a password. Changes to the instrument
or the loading of additional software are not necessary.
Entering the password
The password is given on the password certificate (VIB 5.386-B)
contained in the scope of delivery of the balancing module (VIB
5.386-FM, see below).
• Click on "Device Setup" in the start screen.
• Click on "Registration" in the "Device Setup" screen (see below).
• Click on the "Balancing - not registered" in the "Registration" screen
and enter the registration password in the text editor.
Registration is now complete and the new operating mode now
appears on the start screen.
Device Setup - Registration
Registering 'Balancing'
Device Setup
Balancing
VIBXPERT 'Balancing' Firmware Module - VIB 5.386-FM
VIB 5.386-B Password certificate
VIB 9.806.G 'Balancing' operating instructions (this manual)

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VIBXPERT Balancing 11.2010
Chapter 2: Balancing
Increased vibrations on machines are undesirable phenomena. They
impair product quality, place additional strain on components and,
last but not least, reduce operational safety. The most frequent cause
for these increased vibrations is imbalance. The high centrifugal
forces that result lead to premature wear of machine components
such as bearings and seals, for example. Thus, the objective of
balancing rotors is to limit bearing forces and shaft deformations to
acceptable values.
VIBXPERT enables imbalance to be reliably detected and quickly
corrected. The balancing results are automatically compared with the
evaluation yardsticks of DIN ISO 1940 for the balancing condition of
rotating rigid bodies.
Imbalance
If a rotor is correctly balanced and this rotor is placed on balancing
rollers, any additional mass placed on the rotor will cause this mass
to immediately move downwards. This process is called 'roll off'.
Balancing: Introduction
If this rotor is now turned with the balancing RPM, a centrifugal force
is caused perpendicular to the rotational axis by the displacement of
the center of gravity.
A static imbalance has to be corrected using 1-plane balancing
because the planes of imbalance and center of gravity coincide.
Considered from the measurement plane, the imbalance is static at a
single location.
If two equally heavy masses are attached to a completely balanced
rotor so that they lie exactly opposite in two separately lying radial
planes, this is called a couple imbalance (or a dynamic imbalance).
The center of gravity of the rotor remains on the rotational axis. The
imbalances cause a centrifugal torque that gives rise to opposing
forces of the same size in the bearings. Such imbalances can only be
balanced using two-plane "dynamic" balancing - one-plane balancing
would not bring any improvement.
Couple (dynamic) imbalance
Rotational axis
Imbalance
Moment
inertia axis
Imbalance

2-2
VIBXPERT Balancing 11.2010
Two-plane balancing under operat-
ing conditions using an optical
trigger and two vibration transduc-
ers.
Balancing: Introduction
R
R
Clamped weight
Reference mark
Optical trigger
Vibration transducer
If an individual imbalance which does not lie on the center of gravity
is added to a completely balanced rotor in one plane, it is called a
quasi static imbalance. It corresponds to the combination of a static
imblance and a couple imbalance and is usually compensated in two
planes.
Basically, the consideration of whether to carry out balancing in one
or two planes depends on the specific machine situation, i.e. on the
balancing behavior of the rotor and the vibration behavior of the
machine. Simultaneous balancing in two planes is quicker and more
precise than successive balancing measurements in each of two
individual planes. Residual errors that are accumulated in sequential
balancing are therefore prevented. The distance/diameter ratio of the
balancing planes is normally an important decision criterion.

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VIBXPERT Balancing 11.2010
Balancing: Introduction
Balancing on machines with rotating masses
The VIBXPERT balancing module is based on the well-known
'influence coefficients method':
First, VIBXPERT measures the vibration amplitude and phase angle
and the vibration caused by the imbalance or so-called 'initial
imbalance'. A defined trial weight* is then attached and the instru-
ment measures the resulting change in amplitude and phase. VIBX-
PERT calculates the influence coefficients from the difference be-
tween both vibrations according to magnitude and phase which
precisely indicates the location and magnitude of the balancing
weight with regard to the position and size of the trial weight. In the
case of two-plane balancing, the calculation of the influence of the
mass is also taken into account in the other plane. All so-called 'rigid'
rotors are balanced using this method.
A rigid rotor mainly exhibits proportional vibration behavior if the
balancing weight and angle change. In the case of fixed rotational
speed, weaknesses or resonances in the mounting have no influence
on the vibration behavior. If the machine rotates at a variable speed,
it frequently exhibits different vibration behavior for each revolution
and, therefore, has to be balanced several times over the range of
low-speed to high-speed running.
Soft rotors do not exhibit the expected proportional behavior with
the calculated balancing weight, and the coefficients method does
not apply. Such rotors can normally only be balanced in balancing
machines using a force measuring procedure.
* VIBXPERT calculates the weight and
location for the required trial mass in
such a manner that it usually results in
a reduction in the existing imbalance
and in the associated vibration load.
This has the added advantage that the
trial mass does not have to be removed
again but can remain on the machine
indefinitely.

2-4
VIBXPERT Balancing 11.2010
Diagnosis
Before beginning the balancing procedure, first make sure that the
cause for the adversely affected smooth running of the rotors is
actually an imbalance. Furthermore, a vibration diagnosis indicates
which balancing method is the most suitable.
A series of coordinated measurement tasks are available for the
diagnosis of an imbalance:
• Click on "Balancing" in the start screen and open the 'Diagnosis'
tab (see below):
Overall value - vibration velocity
Records the broadband vibration of the machine in order to docu-
ment the actual condition before and after balancing. This also makes
it possible to determine the measurement location with the highest
vibration values where the sensors should be mounted (see p. 2-5).
RPM
Measures the rotor RPM. If a machine setup is used for balancing, this
parameter is required in order to calculate the resulting centrifugal
forces.
Phase measurement - one / two planes
Records the amplitude and phase angle of the RPM-synchronous
vibration signal. This allows, for example, the type of imbalance
(static / dynamic) to be determined.
Spectrum & Time waveform - vibration velocity
Measures the FFT spectrum and time waveform. If the 1st harmonic
dominates the spectrum, an imbalance is probably the cause for the
poor running.
Balancing: Introduction
Balancing
'1st Harmonic'
Left:
Diagnosis measurement
Right:
FFT spectrum for diagnosis
1st RPM harmonic
vibration dominates -> imbalance

2-5
VIBXPERT Balancing 11.2010
Preparatory activities
The preparations include the mounting of the measurement compo-
nents.
The machine must be disconnected before carrying out any work
on the machine and it must be protected against being switched on
again inadvertently!
Assembly
1. Try to find out the cause of the imbalance visually and fix it if
possible. Example: Remove any coatings from the impeller, fasten
any loose balancing weights or tighten any loose screws on the
foundation.
If the machine cannot be balanced in-situ, it must be firmly
mounted on a rigid foundation (directly on frames or on vibration
isolators).
2. Determine the measurement and balancing planes (see figure on
next page). Mount the vibration transducer on the bearing
housing at the measurement location with the highest vibration
values. Note that:
• The measurement plane should be in the middle of the bearing
and close to the balancing plane and the plane of the center of
gravity (e.g. impeller side, rotor).
• Vibrations are transferred via the outer ring of a bearing in a
radial direction. Thus, mount the transducer on the side
(horizontal) or on the top of the bearing (vertical). Find
suitable measurement locations by searching for positions with
the highest vibration values using a hand-held probe.
• The transducer should be attached as close as possible to the
bearing. Prevent signal attenuation due to excessively long
transmission paths or bearing covers or similar. The direction
of measurement must correspond to the main direction of
vibration (mostly horizontal). If the measurement direction is
horizontal, mount the transducer on the lower half of the
bearing housing.
• Wherever possible, use transducers which are screwed onto the
machine or attach the transducer using a magnetic adapter
(VIB 3.420). The transducer should not be attached to compo-
nents with intrinsic vibrations, e.g. covers.
• Hand-held probes are not suitable for balancing!
• Only for balancing in two planes: Determine the second plane
(B) in the same way.
TIP: Plane B should be on the rigid drive side near to the
coupling and plane A on the soft output side away from the
coupling (see figure on next page).
Balancing: Preparations
WARNING!

Note

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VIBXPERT Balancing 11.2010
Balancing: Preparations
Note for SYSTEM 2 user:
The angle is counted IN the direction of
rotation of the shaft when using the
SYSTEM 2 VIBROSPECT®FFT balancing
instrument.
Typical assembly:
Measurement and balancing plane A &
B, reference marks, fixing angle φ
3. Assess the machine smoothness.
Measure the vibration velocity and record an FFT spectrum if the
measurement values are too high (see DIN ISO 10816-3). If high
vibration signals appear at the rotational frequency, there is an
imbalance that must be corrected by balancing.
Save the measured values in order to be able to compare them
later with the values measured after the balancing procedure.
High axial amplitudes indicate a large imbalance of torque which
cannot be balanced using the methods described here.
4. Attach reference mark on the shaft for the trigger sensor.
• Use reflective tape VIB 3.306 and place this perpendicular to
the direction of rotation.
TIP: Place the mark as close as possible to the groove of the
adjusting spring. The mark should be easy to find and the
measurement results can be reproduced more easily.
• Angle convention: the angular reference mark lies at 0°; the
fixing angle φfor the balancing weight is counted against the
direction of shaft rotation.
TIP: Number the fan blades corresponding to the counting
direction of the fixing angle. Blade no. 1 is taken as the 0°
position.
• Active edge: Define whether the edge of the incoming trigger
mark or outgoing trigger mark on the shaft is to be used as the
reference signal. The setting can be made under 'Transducer/
Keyphaser' in the Device Setup.
Balancing planes
Measurement
Trigger sensor
Vibration transducer
Reference
A
B
Measurement
φφ
φφ
φ
φφ
φφ
φ
DE ('rigid')
NDE ('soft')

Note

2-7
VIBXPERT Balancing 11.2010
Balancing: Preparations
5. Mount the laser trigger sensor with the trigger bracket (VIB
6.632) according to the following figure. Installation notes:
• The machine is switched off during the installation.
• The maximum distance to the shaft is 2 meters.
• To adjust the device, the laser beam is pointed toward the
measurement mark while the machine is at a standstill. As far
as possible, the laser beam should be perpendicular to the shaft
surface and shaft axis.
Trigger sensor assembly
R
R
F
E
S
C
M
E
N
U
H
E
L
P
Trigger Bracket
(VIB 6.632)
Vibration transducer on
the magnetic adapter
(VIB 6.142R + VIB 3.420)
Reflective tape
(VIB 3.306)
Laser Trigger Sensor
(VIB 6.631)
Trigger cable
(VIB 5.432-2.9)
6. Connect the vibration transducer and the trigger sensor to the
measurement instrument.
Permissible angle deviation :
± 45° (reflective marker)
± 15° (contrast marker)
Laser trigger sensor
Shaft
(top view)

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VIBXPERT Balancing 11.2010
After completing the preparatory activities, ensure the following:
• The balancing RPM should lie as close as possible to the
operating RPM. If this is not possible due to high vibration
values, start at a lower RPM and approach the operating RPM
step-by-step in several balancing runs.
• Pay attention to potential resonance points and, if there is any
doubt, perform a coast down measurement!
• The RPM must remain constant during a balancing run! Otherwi-
se, the balancing run must be restarted.
• The rotor must reach operating temperaure during the measure-
ment (e.g. if the rotor works in a hot air stream).
• Often the static imbalance is dominant at vibration values above
10 mm/s. First, compensate this using 1-plane balancing before
proceeding with 2-plane balancing.
• Before starting the initial balancing run, check again that all
measurement components have been correctly installed.
• If a machine setup is used for the balancing procedure, check the
specified parameters. Incorrect rotor data may result in the
calculation of excessive trial weights under certain circum-
stances!
Balancing: Preparations

Note

2-9
VIBXPERT Balancing 11.2010
Balancing: Operation
Operation
If you are not yet familiar with operation in balancing mode, please
note the following instructions:
Settings
All settings necessary for the measurement and evaluation of a
balancing run are made in setup menus:
- Measurement setup: measurement settings (see p. 2-29)
- Transducer setup: parameters of the transducer in use
- Machine setup: data on rotor and balancing-related settings (see p.
2-26ff.)
These three setup menus are contained in the measurement task
manager. The settings can only be changed before a balancing run is
begun. The settings in the following two setup menus can also be
changed during a balancing run:
- Display setup: display settings (see p. 2-24).
- Tools: balancing-related settings and parameters that can be
changed during a balancing run (see p. 2-19ff.).
Display
In each balancing run, two main screens appear:
The data screen shows the balancing weights and their positions on
the rotor in the upper half of the screen. The lower half contains the
measurement data and balancing weights of all completed runs. If a
machine setup is used, it shows the balancing quality attained and
the resulting centrifugal force on the rotor.
In the measurement screen, the measurement values (amplitude and
phase angle) are displayed and the imbalance pointer is shown in a
polar diagram.
Balancing step Maximum display range
Left:
Data screen
Right:
Measurement screen

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VIBXPERT Balancing 11.2010
Balancing: Operation
The respective balancing step appears on the upper left of both
screens:
-0. Initial imbalance: Measurement of the original imbalance; if the
vibration values are within the tolerance range, the rotor is
balanced. Otherwise, the balancing weights must be placed on the
rotor according to the following balancing steps.
-1st trial run: The influence of the attached trial weights is
measured and the resulting balancing weight is calculated.
-2. Trim to ..N. Trim: Trim runs for reduction of rotor imbalance.
The initial imbalance pointer represents the starting point of the
balancing procedure.
Zoom
VIBXPERT automatically scales the display range with respect to the
last two balancing runs. To magnify the view, press the "+" button
repeatedly. If the initial imbalance moves out of the display range,
the maximum range is also given as a percentage of the initial
imbalance.
Navigation
To scroll forwards and backwards, move the joystick repeatedly to
the left or right.
Starting / stopping the measurement
Press on the joystick in the measurement screen.
<Start> / <Pause>
Zoom with '+/-'
Zooming the measurement screen

2-11
VIBXPERT Balancing 11.2010
Balancing: 1-plane
Balancing in one plane
On the basis of an example, the next section illustrates the steps that
are needed to balance in one plane:
Requirements
- In the following example, the machine setup is not used.
- The default settings in the 'Tools' menu item are not changed:
- Correction mode: free
- "Add" balancing weights
- Check that the functions are all active, except for the coefficients
calculation which is inactive.
- 'Use different radii' option: inactive
Activating the balancing mode
1. Switch on VIBXPERT.
2. Click on the "Balancing" icon in the start screen.
Selecting the task
1. Open the '1-plane' tab.
2. Highlight the rotor graphic which corresponds to the rotor type.
3. Check and change the current measurement task beforehand if
necessary. (MENU - Task Manager - Setup)
4. Click on the rotor graphic to open the measurement screen
Measuring the initial imbalance
1. Switch the machine on. Wait until the machine has reached the
balancing RPM and operating temperature if necessary.
2. Press the joystick to start the measurement.
Left:
Selection screen
Right:
Start'Initial' run

2-12
VIBXPERT Balancing 11.2010
First, VIBXPERT records the RPM. The green LED flashes with each
trigger pulse. If the RPM varies too much, a warning message
appears.
Finally, the instrument measures the amplitude and phase of the
RPM synchronous vibration. If the values are unstable, the average is
automatically increased.
3. If the measurement values are stable, press the joystick to stop the
measurement (see previous page).
To repeat the measurement, press the joystick again.
4. Switch the machine off.
Trial run
1. Move the joystick to the right to open the data screen for the trial
run.
2. Enter the mass and fixing angle for the trial weight.
- Click on the mass or angle field under the rotor graphic. The active
field is highlighted in black.
- Enter the respective value in the number editor and confirm the
entry with MENU - 'OK'.
3. Move the joystick to the right until the next screen appears.
If the trial mass is applied at random, there is a risk of increased
imbalance and thus an increased vibration load. Especially if
vibration loads are already very high, this may result in further
machine damage.
4. Switch the machine on.
Balancing: 1-plane
ATTENTION
Left:
Measure 'Initial' run
Right:
Enter mass and angle for trial run