Hofmann geodyna optima Operating manual

geodyna optima
Additional instructions
Wheel balancer

1
geodyna optima Operator’s Manual
Snap-on Equipment GmbH
Geschäftsbereich Hofmann Werkstatt-Technik
Postfach 1202
D-64311 Pfungstadt
Tel. [phone]
Fax [phone]
E-mail: service @hofmann-ge.com
Internet www.hofmann-ge.com
DISCLAIMER OF WARRANTIES AND LIMITATIONS
OF LIABILITIES
While the authors have taken care in the preparation of
this manual, nothing contained herein:
- modifies or alters in any way the standard terms
and conditions of the purchase, lease or rental
agreement under the terms of which the
equipment to which this manual relates was
acquired,
- increases in any way the liability to the
customer or to third parties.
TO THE READER
While every effort has been made to ensure that the
information contained in this manual is correct, complete
and up-to date, the right to change any part of this
document at any time without prior notice is reserved.
Before installing, maintaining or
operating this unit, please read
this manual carefully, paying extra
attention to the safety warnings
and precautions.
All Information in this manual has been
supplied by the producer of the
equipment:

Contents
1.0 Safety ........................................................................................................................ 6
1.1 Typographic style ....................................................................................................... 6
1.2 Scope of application.................................................................................................. 6
1.3 General safety rules ................................................................................................... 7
1.4 Description of function ............................................................................................... 8
1.4.1 Switching operating modes ....................................................................................... 9
1.4.2 TDI Tread Depth Indication ...................................................................................... 10
1.4.3 Print functions .......................................................................................................... 10
8.0 Layout ..................................................................................................................... 12
9.1 Balancing ................................................................................................................ 10
9.1.1 Wheel measuring run in Optima Mode ..................................................................... 12
9.2 Optima Entry Screen ............................................................................................... 13
9.2.1 Warning Messages in Optima Entry screen.............................................................. 14
9.3 Optima Diagnosis ................................................................................................... 16
9.4 Optima Matching ..................................................................................................... 17
9.4.1 Geometric Matching ................................................................................................ 17
9.4.2 Geometric matching with only the rim ....................................................................... 18
9.5 Rim Only Diagnosis ................................................................................................. 18
9.6 Behind-the-spokes placement ................................................................................. 19
9.7 Advanced Spoke Detection ..................................................................................... 19
9.8 Optima Parameters ................................................................................................. 20
9.9 Print Report ............................................................................................................. 21
10.0 Changing modes of operation ................................................................................. 22
11.0 Optional functions .................................................................................................... 23
11.1 OPTI LINE mode ..................................................................................................... 24
11.1.1 PULL calibration ...................................................................................................... 30
12.0 Error codes ............................................................................................................. 31
13.0 Optimisation / Weight minimisation .......................................................................... 47
14.0 Readjustment by the operator .................................................................................. 47
15.0 Maintenance ............................................................................................................ 48
15.1 Laser scanners seating glass cleaning .................................................................... 48
16.0 Technical data ......................................................................................................... 49
17.0 Accessories ........................................................................................................... 50
17.1 Printer ..................................................................................................................... 50
17.2 Wheel elevator......................................................................................................... 50
17.3 Trolley for Flanges ................................................................................................... 50
17.4 Perforated flanges for screw stud............................................................................. 50
17.5 SCA Flange............................................................................................................. 50
17.6 Tapered ring ............................................................................................................ 51
17.7 Wheel weight removal tool ....................................................................................... 51
18.0 Printer Installation Instructions (optional) ................................................................... 52

3
1-1
1.2-1
1
1.0 Safety
All safety information relative to the unit is described in
the Safety Manual (fig. 1-1) supplied alongside this
operator’s manual.
The safety precautions must be completely understood
and observed by every operator. We recommend
keeping a copy of the Safety Manual next to the unit
within easy reach of the operator.
This manual contains notes and specific warnings for
dangerous situations that can occur during the
procedures described.
1.1 Typographic style
This manual contains specific styles of text that
suggest the relative operating modes:
Note: provides a suggestion or an explanation.
WARNING: NON-OBSERVANCE CAN CAUSE
DAMAGES TO THE UNIT OR TO OBJECTS
CONNECTED TO IT.
WARNING: NON-OBSERVANCE CAN CAUSE
INJURY (ALSO SERIOUS) TO THE OPERATOR OR
OTHER PEOPLE.
Dotted list:
•Indicates an action or sequence of actions that the
operator must carry out in the order set out.
1.2 Scope of application
The geodyna 6800 optima balancer is identical to the
geodyna 6800 basic model apart from three laser
scanners for the automatic detection of the wheel data
and the absence of the right detecting arm.
Note: the following additional operating
instructions integrate, but do not replace,
the geodyna 6800 basic manual and the
supplement for wheel balancers with
Power Clamp device, to which reference
must be made for all instructions,
operations, notes and warnings. This
manual refers to them when required.
geodyna 6800 optima model (figure 1.2-1)
1 Pedal to operate the Power Clamp and the main
shaft lock.

4
geodyna optima Operator’s Manual
Safety & function
1.2-1
1
1.3 General safety rules
Only properly trained personnel shall be allowed to
operate the geodyna 6800 optima balancer.
The machine must be used exclusively for the scope
of application by following the operating indications
container in the manual.
Unauthorised changes and modifications to the
machine relieve the manufacturer from any liability for
damages and injuries that might result there from.
On no account should safety features be removed or
made inoperative. In general any work on the electrical
system, during installation or power supply
modifications, must be carried out by a qualified
electrician in line with relevant national standards and
the regulations of the local power station.
Note: Remove jumper X46 prior to insulation
resistances tests (500 V DC) and high
voltage tests (1000 V AC), in line with EN
60204-1 (see electrical diagram).
It should be noted that working with technical
equipment may always involve an unforeseeable
acceptable risk. Therefore the operator should
eliminate such dangers by operating the machine with
care.
The following points should be observed:
use the machine only as a technical work tool for its
specified scope of application only;
always use original accessories, approved by the
manufacturer, in perfect condition and suitable for the
type of work to be carried out;
follow the instructions, notes and technical data of the
machine manufacturer and the manufacturer of the
wheels to be balanced;
wear suitable protective clothing and accessories (e.g.
goggles, safety shoes, etc.);
avoid eye contact with the laser scanners;
do not knock or camper the laser scanners;
carry out a regular cleaning of the laser scanners
glass;
do not rest on the wheel guard whilst the laser scanner
is in operation.
In case of calibration defects there is an internal
diagnostic that prompts contacting service.

5
1.4-1
1.4 Description of function
The wheel data detection is carried out automatically
and with no contact by 3 laser scanners, with
integrated CCD. The 6800 optima balancer calculates
the co-ordinates of the optimal positions for the
application of balancing counter-weights.
The geodyna 6800 optima balancer can be used to
determine geometric information relative to rim
deformations (deviations of the axis in respect of its
rotation axis, commonly referred to as RUNOUT); to
determine geometric information relative to tire
deformations (deviations of the axis in respect of its
rotation axis). This information is useful for an accurate
diagnosis of the wheel behaviour as well as providing
the operator with useful indications to minimise the
effects of these deformations.
The geodyna 6800 optima balancer is able to
automatically determine the unbalance of the rim or
of the wheel in respect of its rotation centre. At the
end of the measuring run the control software carries
out a matching, that consists in corresponding the top
part of the tire with the bottom part of the rim. The
balancer analyses the overall state of the wheel and
prompts for any repairs required.
The geodyna 6800 optima balancer carries out two
types of runout:
1) radial (on the radius);
2) lateral (on the lateral shift).
The geodyna optima balancer also has the TDI (Tread
Depth Indication) system, which provides a general
indication of tread wear. This function is only active in
OPTIMA mode.
The geodyna 6800 optima balancer can operate in
three distinct modes:
a) MANUAL
b) PROFILING
c) OPTIMA
MANUAL
The machine guarantees the basic functions,
suggesting the position and value of the weights to
apply to the rim. The use is similar to the standard
models; balancers fitted only with the left detecting
device. The MANUAL mode is activated through the
functions menu.
PROFILING
This mode is identifiable on the monitor with the symbol
displayed in fig. 1.4-1 detail 1. The control software
automatically acquires the wheel dimensions during
the measuring run. During the normal measurement
cycle the laser scanner automatically sample the rim
shape (internal and external). The machine optically

6
geodyna optima Operator’s Manual
Safety & function
1.4-2
1.4-3
suggests the exact application point of the weight on
the rim through the laser beam (laser pointer).
LASER POINTER: even if inactive, the
Laser Pointer function is present on the
optima balancer. The machine is set in
geodata arm mode as default. The Laser
Pointer mode can be activated by
contacting service. For the use of the
geodata arm refer to the instructions
contained in the geodyna 6800 basic
manual.
OPTIMA
Identifiable on the monitor with the symbol displayed
in fig. 1.4-2 detail 1. In this mode the balancer, as well
as the profiling, carries out the automatic diagnosis
of the runout and the reading for the TDI function.
Control of the rim only: in OPTIMA mode, clamping
only the rim on the balancer, the laser scanner detects
the absence of the tire. In this condition, the rear laser
analyses the runout on the bead recess in the internal
part of the rim and will prompt to automatically proceed
with the matching.
1.4.1 Switching operating modes
(fig. 1.4-3)
The balancer can be set so that it presents the desired
mode of operation at power-on.
• Set the desired value in the functions menu:
0 - MANUAL;
1 - PROFILING;
2 - OPTIMA.
Keep the F6 key pressed to switch from Profiling to
Optima and vice versa.
Note: refer to the geodyna 6800 basic manual
for the navigation procedure through the
function menus and personal data entry
modalities.

7
1.4.2-1
ab c
1.4.2 TDI Tread Depth Indication
When run in OPTIMA mode, the machine always
automatically detects the depth of the tread groove at
the centre of the tire and over its whole circumference.
According to the mean value detected and the limit
value set, the program displays one of the following
Tread Groove indications on screen (Fig. 1.4.2-1):
a) GREEN icon = higher than limit set.
b) YELLOW icon = close to limit.
c) RED icon = below limit set.
Note: The information provided for the operator is
intended as a guideline only. The TDI
function is designed to alert the operator
to the need for a closer examination of
wear on the tread.
The operator can set the tread depth limit value for which
wear information will appear on screen. To change the
limit value go to the “Optima Operating Parameters”
menu (Section 9.7).
1.4.3 Print functions
The FUNCTION screen page includes three print settings
items:
Printing. Field for switching the printer On/Off. Set to
On to enable printing. Set to Off to disable printing.
Paper size. Field for selecting the print format. Activate
the format which matches the paper size used, A4 or
Letter.
Printer type. Field for selecting the type of connection
to the machine PC.
- 0activates the connection via parallel port.
- 1activates the connection via USB port.
- 2sets the machine up for a special connection,
reserved for technicians.

8
geodyna optima Operator’s Manual
Installation & operation
2.0 Installation
See geodyna 6800 basic model instructions.
3.0 Electrical connection
See geodyna 6800 basic model instructions.
4.0 Controls and displays
See geodyna 6800 basic model instructions.
5.0 Starting the machine
See geodyna 6800 basic model instructions.
6.0 Clamping the wheel
See geodyna 6800 basic model instructions and the
supplement for wheel balancers with Power Clamp
device.
7.0 Entry of wheel type,
balancing mode and wheel size
In Profiling and Optima mode the wheel data entry is
automatic (see later instructions).
For Manual mode functioning see geodyna 6800 basic
model instructions.

9
13
2
8-1
8.0 Layout
The geodyna optima balancer is fitted with a laser
scanner (fig. 8-1, details 1, 2 and 3) for the automatic
measurement of the wheel data.
The internal laser scanner (detail 1) carries out the
following measurements:
a) detects the internal profile of the rim to identify the
optimum position of the weight to apply on the left
part or internal part of the rim;
b) calculates the distance and diameter of the rim;
c) detects the left outer radial and lateral runout;
d) detects the number and position of any spokes.
The laser scanner integrated on the wheel protection
guard (detail 2), carries out the following
measurements:
a) automatically calculates the best point for the
application of the weight on the external part of the
rim;
b) detects the right lateral and radial runout;
c) detects the width of the rim.
The rear laser scanner (detail 3) carries out the
following measurements:
a) detects the tread runout, or the runout of only the
rim on the bead recess.

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Operational Selections
geodyna optima Operator’s Manual
9.1-1
9.1-2 9.1-3
9.1-4
9.1-1a
F1 F1
9.0 Optima BALANCING
The geodyna optima balancer is fitted with 3 laser
scanners with integrated CCD that guarantee an
accurate detection of the characteristics of any type of
wheel. The laser scanners carry out a series of
geometric measurements on the rim, the tread, the
flange and the profile of the rim and of the whole wheel
with a single measuring run of a few seconds. The
measurements detected are then interpreted by the
integrated pc that provides detailed comparative
evidence with a geometric comparison aimed at
improving the wheel efficiency and can print an
exhaustive diagnostic report.
Note: the following instructions describe the
specific functions of the geodyna 6800
optima wheel balancer in OPTIMA mode.
For operations different from the ones
described refer to the manual for the
geodyna 6800 basic model.
9.1 Balancing
The balancer displays the start screen at power-on (see
geodyna 6800 basic model generic instructions).
The screen in fig. 9.1-1 appears automatically on the
monitor after clamping the wheel or by pressing F4
from the start screen. Keep the F6 key pressed to
select the Optima or the Profiling mode (fig. 9.1-4).
Note: If the Laser Pointer mode was activated
instead of the geodata system, the
balancing screen page appears as
shown in fig. 9.1-1a.
Note: With the Laser Pointer mode switched on,
the image is a true representation of the
actual location of the adhesive weights.
A larger rim cross-section shows the
weights suggested (yellow) or possible
alternatives (grey) in the 6 o-clock zone,
precisely where the laser beam indicates
they should be applied.
F1: to access the rim nominal dimensions screen.
With ALU mode selected, when the geodata arm is
removed, key F1 changes icon (fig. 9.1-2), allowing
relocation of the weight in a different position to the
one suggested.
In contrast, with Laser Pointer mode active the key
appears split in two (fig. 9.1-3): hold down the lower
part of the key and turn the wheel manually to vary the
position of the weight indicated by the pointer. In both
cases, changing the position varies the value of the
weight. Changing position is possible on both wheel
planes. When you change the position of the weight on
one side of the wheel the value of the weight on the
opposite plane turns red to indicate the change of value
and/or angular position.

11
9.1-6
F5
F4
F3
F2
9.1-5
F5
9.1-7
Note: The change in the position of the weight
is saved by the machine, then
automatically suggested for all subsequent
wheels with the same dimensions. The
selection is deleted when the machine is
switched off.
F2: the top part of the key is described in the geodyna
6800 basic model instructions. The bottom part of the
key changes the weights application mode. The
normal mode is accessed by pressing the key for
longer (clip balance weights).
Note: The possible application of the weights in
ways other than that suggested by the
machine is indicated by the grey weights
in the positions compatible with the rim
configuration detected.
Note: The change in the weight application mode
is then automatically suggested for all
wheels with the same dimensions, until
the machine is switched off.
F3: The upper part of the key is described in the geodyna
6800 basic model manual.
Use the lower part of the key to select the Vehicle Type
to be operated on. There are three vehicle types
selectable (fig. 9.1-5): CAR, SUV, TRUCK, with runout
limits suitable for the class of vehicle set for each. The
limit values assigned separately to each Vehicle Type
are:
- First harmonic Wheel radial Runout,
- Peak to Peak Wheel radial Runout and
- Tread Depth.
The values can be changed individually and saved by
the user in the "OPTIMA PARAMETERS" menu.
F4: prints the diagnostic report (the printer must be
active). Pressed again it interrupts the current print (in
this case the key will be blocked).
F5: activates the mode on the spokes. For a correct
detection the spokes on the rim must be equidistant,
of a regular shape and of a minimum number of 3
and maximum number of 12. If the number of spokes
has been detected correctly, a check mark will appear
on the relative key (fig. 9.1-6). If the spokes cannot be
detected, the pictorial as shown in Fig 9.1-7 is displayed.
Pressing F5 will display the values of the two separate
weights to apply on the wheel. Therefore it will not be
necessary to introduce the reference spoke location
data as it has already been detected by the control
software. Proceed directly with the application of the
wheel weights. To exit the Spoke mode, press F5 once
again or remove the wheel.

12
Operational Selections
geodyna optima Operator’s Manual
F6
If the laser scanners have not been able to detect the
spokes or estimate their location, even if the type of
wheel has been correctly identified, activate the
Advanced Spoke Detection function (Section 10.1) in
the OPTIMA PARAMETERS screen and repeat the
wheel run. In any event, the data with the number of
spokes and their position can be nevertheless
introduced manually
Proceed as follows:
• Keep F5 pressed and contemporaneously manually
rotate the wheel.
• Release F5 when the correct number of spokes is
displayed on the monitor.
• Manually rotate the wheel in order to align one of the
spokes at 12 o’clock.
• Press F5, the control software carries out the
calculation and displays the two weight values,
appropriately divided.
• Fit the weights to the wheel, behind the spokes, as
shown on the monitor.
F6: keeping it pressed changes the mode from Profiling
to Optima. Pressed briefly it accesses the OPTIMA
ENTRY Screen.
9.1.1 Wheel measuring run in
OPTIMA Mode
• Lower the covering guard. If the automatic measuring
run function has not been activated, press the
START key: the balancer carries out the wheel
measuring run piloted by the laser scanners. They
detect the rim profile; measure the wheel runout;
the internal rim lateral and radial and the external
rim lateral and radial.
At the end of the wheel measuring run the balancer
displays any unbalance on the wheel and signals the
points to fit the weights, unless the RUNOUT limits
have not been exceeded, in this case the balancer
automatically suggests the OPTIMA ENTRY procedure.
Press F1 to display the wheel (rim + tire) size data
detected with the wheel measuring run.
Press F2 to alternate the characteristics of the weights
(ALU or adhesive): the balancer will automatically
recalculate the value and position of the corresponding
weights.
The wheel measuring run may have detected the
number of spokes: in this case press F5 to determine
the position of the hidden weights.

13
9.2-0
9.2-2
a
b
c
e
f
k
i
d
gh
9.2-1
1
9.2 OPTIMA ENTRY Screen
(fig. 9.2-0)
Press F6 in the balancing screen to access.
The control software automatically displays this screen
whenever, at the end of the wheel measuring run, the
measuring values exceed the preset limits.
The overall wheel (rim + tire) measuring run is displayed.
To move the cursor on the wheel graph, rotate the wheel
by hand in both directions.
All of the OPTIMA ENTRY screens show the first
harmonic Peak index (1, fig. 9.2-1), which facilitates
advanced diagnosis of the rim or the wheel.
The unbalance data is shown under the graph (first runout
harmonic).
The automatic Position Brake fitted on the machine will
be activated when the peak position is manually brought
to the 12 o'clock point.
The Position Brake function can be temporarily disabled
in two ways:
- In the BALANCING or OPTIMA ENTRY screens press
the STOP key once to disable, press it a second time
to re-enable the function.
- The brake is not activated if the "Rim Cleaning Position
Brake Control" function has been activated in the
FUNCTIONS menu.
a) Wheel radial runout.
b) Rim radial runout (if measured).
c) Rim lateral runout (if measured).
d) Runout proportion due to rim or tire.
e) Equivalent static unbalance estimate given by the
runout at 100 km/h.
f) Describes the performance improvement if the
geometric matching is applied.
g) Runout value at the position the graph cursor is
in, which corresponds to the wheel at 12 o’clock.
h) Peak to peak (p-p) graph; the peak to peak value
is the difference between the maximum and
minimum value.
i) Preset threshold on the wheel runout.
k) Warning of defective rim and/or tire. The software
prompts the operator to check for rim or tire
defects, suggesting matching or automatically
showing the screen for the appropriate corrective
action, where necessary.
If defects are found, box “j” may display from one to
three Warning Messages (Section 9.2.1). Each
message may indicate two levels of seriousness,
as follows:
For measurements above the limit value, a Problem
indication is displayed.
For measurements straddling the limit value, the
Possible Problem indication is displayed.

14
Operational Selections
geodyna optima Operator’s Manual
9.2-3
9.2.1-1 9.2.1-2
F1 F2 F3 F4 F5
9.2-2
If no problems are found with the wheel, tire or rim,
the OPTIMA ENTRY screen page shows “OK” (Fig.
9.2-2).
The appearance of the messages is linked to the limit
values set, which the operator can change using the
OPTIMA PARAMETERS menu (Section 9.6).
(fig. 9.2-3)
F1: restarts an interrupted matching procedure.
F2: displays the screen for the advanced rim diagnosis
(see “OPTIMA DIAGNOSIS” section).
F3: access the preset work parameters in Optima mode
(see “OPTIMA PARAMETERS” section).
F4: print (if printer is available) or interrupts the current
print (in this case the key is blocked).
F5: opens the "OPTIMA MATCHING" screen.
9.2.1 Warning Messages in
OPTIMA ENTRY screen
Wheel assembly problems messages appear when:
1) wheel peak-to-peak runout is high
or
2) wheel 1-harmonic runout is high and the
proportion of runout between rim and tire is
close to 50 per cent.
Alert Message (Fig. 9.2.1-1):
If no matching is recommended:
High runout on wheel, but no possibility of improving by
matching. Check rim and tire for defects.
If matching is recommended:
High runout on wheel. Geometric matching is
recommended.
Warning Message (Fig. 9.2.1-2):
Possible issue with wheel, but no possibility of improving
by matching. Check rim and tire for defects.
If matching is recommended:
Potential problem on the wheel. Check rim and tire for
defects.

15
Rim problems messages appear when:
1) rim radial runout is high
or
2) rim lateral runout is high
or
3) wheel 1-harmonic runout is high and the
proportion of runout between rim and tire is
greater than 60 per cent (high rim 1-harmonic
runout).
Alert Message
If no matching is recommended:
High runout on rim, but no possibility of improving by
matching. Check rim for defects.
If matching is recommended:
High runout on rim. Geometric matching is
recommended.
Warning Message
Possible issue with rim, but no possibility of improving
by matching. Check rim for defects.
If matching is recommended:
Potential problem on the rim. Check rim for defects.
Tire problems messages appear when:
1) wheel 1-harmonic runout is high and the
proportion of runout between rim and tire is
less then 40 per cent (low rim 1-harmonic
runout)
Alert Message
If no matching is recommended:
High runout on tire, but no possibility of improving by
matching. Check tire for defects.
If matching recommended:
High runout on tire. Geometric matching is
recommended.
Warning Message
Possible issue with tire, but no possibility of improving
by matching. Check tire for defects.
If matching is recommended:
Potential problem on the tire. Check tire for defects.
The last line of the warning box is:
Press HELP for more information. Press ESC to return
to balancing screen.

16
Operational Selections
geodyna optima Operator’s Manual
9.3-2
9.3-1
9.3 Optima Diagnosis
Advanced diagnostics data
(fig. 9.3-1)
The top graph shows the wheel runout. The lower graph
shows the rim radial runout.
F3: to change from this screen to the following one (see
“Rim radial and lateral runout” section).
Rim radial and lateral runout
(fig. 9.3-2)
The screen page shows the rim radial and lateral runout
graphs.
F3: to change from this screen to the previous one.

17
9.4-2
9.4.1-1
9.4.1-3
9.4.1-2
9.4-1
9.4 OPTIMA MATCHING
There are two ways to access the Matching procedure:
1) Manually,
• Press F5 in the "OPTIMA ENTRY" screen (fig. 9.4-1)
to go to the "Optima Matching" screen (fig. 9.4-2).
• From "OPTIMA MATCHING" continue by pressing
- F2 Continues the interrupted Matching.
- F5 Matching from complete wheel.
- F6 Matching from rim only.
2) Automatically,
by observing the following conditions:
• RIM ONLY function OFF ("0" for RIM ONLY item in
"OPTIMA PARAMETER" screen).
• Perform the rim only run.
9.4.1 Geometric Matching
(fig. 9.4-2)
At the end of the wheel measuring run the balancer
may prompt carrying out a geometric matching (F5 key
highlighted in the “Optima Matching” screen), whose
diagnosis can provide a substantial improvement to the
wheel performance. To start the geometric matching
procedure proceed as follows:
• Press F5 on the “Optima Matching” screen to start
the procedure. The control software prompts to position
the wheel valve at 12 o’clock (fig. 9.4.1-1).
• Press F6 to confirm the operation.
• Mark the tire in the position suggested by the control
software (fig. 9.4.1-2) and press F6 to confirm. The
control software suggests moving the tire to the tire
changer in order to align the mark on the tire with the
wheel valve (fig. 9.4.1-3).
• After the tire changer, clamp the wheel on the balancer
and confirm with F6. The control software prompts to
carry out a checking cycle. (Press F4 to carry out a
checking cycle of the runout directly).
• Lower the wheel guard and press START: the
balancer will start the checking cycle.
At the end of the checking cycle the control software
will suggest the new value of the weights and their
location on the rim.
During the geometric matching procedure you can
return step by step to the previous screens by pressing
F5. Pressing F1 displays the balancing screen; press
the ESC or STOP keys to return to the “Optima
Matching” screen; from this last press F1 to continue
the previously interrupted geometric matching
procedure.

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geodyna optima Operator’s Manual
9.4.2-0
9.4.2-1 9.4.2-2
9.5-3
9.5-1
9.5-2
9.4.2 Geometric matching with
only the rim
(fig. 9.4.2-0)
• After having clamped the rim to analyse on the balancer,
press F6 on the “OPTIMA MATCHING” screen.
• Lower the wheel guard and press the START key: the
laser scanners carry out the runout measurement in
the bead seats. At the end of the measurement the
control software prompts the alignment of the rim valve
at 12 o’clock (fig. 9.4.2-1).
• Press F6 to confirm.
• Release the rim and move it to the tire changer to fit
the tire (fig. 9.4.2-2).
• After the tire changer, clamp the wheel (rim + tire) on
the balancer and confirm with F6.
• Lower the wheel guard and press START: the balancer
will proceed with the runout calculation with the tire
fitted.
To carry out the geometric matching of the complete
wheel proceed as indicated in the “Geometric
matching” section.
9.5 Rim Only Diagnosis
Optima can be used to perform an analysis of the rim
only and to process its structural parameters,
independently of the tire.
If only the rim is clamped, the machine always
automatically recognises the presence of a rim without
the tire.
To activate the "Rim only diagnosis" function:
• enable "1" in the "Optima Parameters" screen at the
"RIM ONLY" item (m, Section 9.6).
• start the run.
During the run measurements are taken on the lateral
internal profiles and on the bead recesses (fig. 9.5-1).
The laser reading positions on the rim are the same as
the contact points obtained with a circle with 16mm
diameter, as shown in figure 9.5-2.
When the run is complete, the graph showing the curves
for the radial Run-out of the right and left bead recesses
appears (fig. 9.5-3).
Only in the RIM ONLY function, the graph shows three
different coloured markers, indicating the first harmonic
peak position for:
Left bead recess - Yellow triangle
Right bead recess - Red triangle
Mean of the entire rim - Grey triangle
When the rim is turned, it will be stopped by the brake
in each peak position, to facilitate rim marking. The