Sirona Galileos Plus Maintenance manual
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Cover page
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Sirona Dental Systems GmbH
Maintenance Instructions GALILEOS Comfort PLUS
Table of contents
1
2
3
4
5
6
7
8
9
10
Safety ...................................................................................................................... 4
Operation notes....................................................................................................... 5
Auxiliary devices required........................................................................................ 6
Visual check ............................................................................................................ 7
Optical and acoustic signals.................................................................................... 8
5.1 Checking the function of keys and buttons................................................... 9
Checking the power supply connection................................................................... 11
Checking the tube current ....................................................................................... 13
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Checking the tube voltage....................................................................................... 17
Checking the radiation time..................................................................................... 18
Calculating / checking the mAs value...................................................................... 19
11
12
Checking the laser light localizers ........................................................................... 20
Adjusting and calibrating the system....................................................................... 21
12.1 Calling the "Adjustment/Calibration" menu................................................... 21
12.2 Menu structure ............................................................................................. 22
12.2.1 Navigation area ................................................................................. 23
12.2.2 Tool pictographs................................................................................ 24
12.3 Adjustment and calibration via the "Service Functions" menu ..................... 25
12.3.1 Diaphragm image .............................................................................. 25
12.3.2 Checking the radiation field............................................................... 31
12.3.3 Dosimetry .......................................................................................... 32
12.3.4 Sensor adjustment ............................................................................ 33
12.3.5 Iris adjustment ................................................................................... 34
12.3.6 Shading calibration............................................................................ 35
12.3.7 Distortion calibration.......................................................................... 36
12.3.8 Geometry calibration ......................................................................... 38
Yearly maintenance checklist.................................................................................. 41
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1 Safety Sirona Dental Systems GmbH
Maintenance Instructions GALILEOS Comfort PLUS
Safety
1
NOTICE
Qualifications of service personnel
Installation and startup may be carried out only by personnel specifically
authorized by Sirona.
Safety
WARNING
Perilous shock hazard!
You must switch off the unit and then wait at least 1 minute, for
measurements at the tube assembly at least 4 minutes, before you start
to connect test cables or remove a cover!
For measurements in the area of the power supply terminal, the unit
must be disconnected from the junction box of the building installation
before you start to connect test cables!
DANGER
X-rays
When performing the following tests, be sure to observe the radiation
protection regulations applicable in your country (see Operating
Instructions).
DANGER
X-rays
"Radiation" is signaled by the message "X-RAY active!", a beep, and an
X-ray LED.
NOTICE
Risk of damage to boards
Please observe the usual precautionary measures for handling printed
circuit boards (ESD). Touch a ground point to discharge static electricity
before touching any boards.
IMPORTANT
It is essential that you also observe the notes about the operation of the
unit in the Operating Instructions.
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Sirona Dental Systems GmbH 2 Operation notes
Maintenance Instructions GALILEOS Comfort PLUS
Operation notes
2
Operation notes
Nominal line voltage The volume tomograph operates in the following nominal line voltage
ranges:
● 200 – 240 V
● 50 / 60 Hz
The permissible line voltage fluctuation is ±10%.
The internal line impedance must not exceed 0.8 Ω.
Only permanent electrical connection of the unit is allowed.
IMPORTANT
The regulation "Federal Performance Standard for Diagnostic X-ray
Units, Code of Federal Regulations, Title 21 CFR, Subchapter J"
requires a corresponding power supply connection.
Cooling period The cooling period between two exposures is maintained by an automatic
exposure blocking function according to the pulse/pause ratio (see
Operating Instructions). The decrementing waiting time count is displayed
on the control panel.
Measurements Always switch the unit off before connecting a measuring instrument.
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For safety reasons, the power supply should be switched off at the
junction box of the building installation when performing measurements
in the vicinity of the power supply unit.
Select the correct current/voltage type and adjust the measuring range to
match the expected readings.
Perform continuity tests only on units which are switched off.
If several exposures with radiation must be taken to check a
measurement, make sure that the prescribed cool-down intervals are
observed. They are maintained by an automatic exposure blocking
function (see Operating Instructions).
The pulse/pause ratio is 1:20, i.e. a 20-second pause is maintained for
each second of radiation cycle. The pulse/pause ratio is automatically
maintained (automatic exposure blocking).
It is essential that you observe the radiation protection regulations
applicable in your country prior to radiation release.
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3 Auxiliary devices required Sirona Dental Systems GmbH
Maintenance Instructions GALILEOS Comfort PLUS
Auxiliary devices required
3
Auxiliary devices required
CAUTION
Only use a battery-operated digital multimeter with safety sockets.
It is essential that you observe the safety and operating notes provided
in the operating instructions of the multimeter.
● Battery-operated digital multimeter of type:
– Fluke 8000 A
– Philips PM 2816 rms
– or similar
Dosimeter USA
CAUTION
It is essential that you observe the safety and operating notes provided
in the operating instructions of the dosimeter.
● Dosimeter for pulsed radiation of type:
– Mult-O-Meter 512L
– or similar
Measuring wires
CAUTION
Use exclusively fully insulated measuring wires.
Check the measuring wires for damages before use.
● Measuring wires with the following properties:
– dielectric strength > 1000V
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Sirona Dental Systems GmbH 4 Visual check
Maintenance Instructions GALILEOS Comfort PLUS
Visual check
4
Visual check
● Check for mechanical damage that could affect radiation protection.
● Check that all labels are attached and legible.
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– Damaged/imperfect labels must be replaced.
You can order them in writing from Sirona (see back page for
address),
stating the following:
– Customer's name
– Customer's address
● Check to see whether all model numbers with serial numbers are
attached and are still legible on the device for the purpose of
identification.
For serial numbers see also Installation Report / Warranty Passport.
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5 Optical and acoustic signals Sirona Dental Systems GmbH
A
B
C
Maintenance Instructions GALILEOS Comfort PLUS
Optical and acoustic signals
5
Optical and acoustic signals
Optical and acoustic signals, Galileos
1. Turn the main switch (A) to position I.
ª The X-Ray radiation indicator C lights up briefly.
ª After approx. 2 seconds, the green LED B in the upper part of the
control panel lights up. This LED remains lit as long as the unit is
on.
ª The start screen appears on the touchscreen of the Easypad and
the initialization of the device starts running (for approx. 1
minute). The rotating element rotates briefly clockwise and
counterclockwise.
2. Check the function of the keys.
ª Press a height-adjustment key. The movement of the height-
adjustment motor is accompanied by an acoustic signal.
ª If Remote has been installed, test the buttons and the display of
the remote unit, too.
ª The release button must not be defective or damaged.
See also the Operating Instructions, in the Operation section.
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Sirona Dental Systems GmbH 5 Optical and acoustic signals
T
R
B
A
C
?
Exposure is performedExposure is performed
D
F
E
Maintenance Instructions GALILEOS Comfort PLUS 5.1 Checking the function of keys and buttons
5.1
Checking the function of keys and buttons
Radiation protection measures
Checking the function of keys and buttons
WARNING
The unit emits X-ray radiation.
Excess exposure to X-rays is detrimental to health.
➢ Use the prescribed accessories for radiation protection.
➢ Do not stay in the X-ray room during exposure. Move as far away
from the unit as the coiled cable for the release button allows you to.
✔ "Unit ON" LED display C lights up. Press the R key D to move the unit
back to the starting position. As long as no connection has been
made to SIDEXIS XG, the message is displayed in the comment line
of the control panel on the
state"
touchscreen.
1. Switch on the PC.
2. Start SIDEXIS XG.
For further information and possible error messages, see Operating
Instructions.
3. Use the -/+ keys to select a program E.
4. In the sub menu F, select a kV/mA combination with the -/+ keys.
5. Check whether the patient symbols on the touchscreen can be
selected in exactly the right position.
If problems occur during selection, adjust the touchscreen ().
6. Press release button (A) and hold it down until the end of the
exposure.
ª The exposure is released.
the comment line on the touchscreen.
During radiation, the optical radiation indicator (B) lights up on the
Easypad; during radiation, an acoustic signal is also emitted.
Radiation can be triggered multiple times during exposure.
When the rotation and radiation switch off automatically, the
exposure is complete.
"Switch SIDEXIS to ready for exposure
"Exposure is performed"
appears in
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7. Let go of release button (A).
ª The exposure is completed.
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5 Optical and acoustic signals Sirona Dental Systems GmbH
5.1 Checking the function of keys and buttons Maintenance Instructions GALILEOS Comfort PLUS
8. Cancel exposure - Check deadman function
Select the same exposure parameters.
The operational readiness LED B flashes until the automatic coolingoff period of the X-ray tube assembly has expired (automatic
exposure block).
9. Press the release button A.
10. Let go of the exposure release button.
ª The exposure is immediately terminated.
The confirmation of the exposure data is displayed on the
touchscreen. The radiation time and the area dose product (the
lower two values) flash. In this way, an exposure that has been
triggered can be canceled again at any time.
CAUTION
Defective indicators and keys represent a risk to the safety of both the
patient and the operator.
The user is not permitted to operate the unit until the necessary repairs
have been made.
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Sirona Dental Systems GmbH 6 Checking the power supply connection
K1
K1
300V
AC
Maintenance Instructions GALILEOS Comfort PLUS
Checking the power supply connection
6
Checking the power supp ly connection
To check the line voltage, the
creating an X-ray. To do this, proceed as follows:
Preparing the measurement 1. DANGER! After disconnecting the unit from the junction box of the
building installation, wait at least 1 minute before starting to check the
line voltage!
Disconnect the unit from the junction box of the building installation.
2. Remove the "Bottom profile" cover (see Service Manual).
line voltage drop
must be determined while
3. CAUTION! Only use fully insulated measuring wires.
Connect the measuring wires as shown in the illustration to the
connectors L and N of the power supply terminal K1.
4. On the multimeter, select the voltage measuring range "300 V
5. Re-attach the unit to the junction box of the building installation.
6. DANGER! Do not touch any live components!
Set the main switch (A) to I (see also Operating Instructions).
7. Wait for approx. 1 minute.
8. Press the R key.
ª The unit moves to its starting position.
AC
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".
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6 Checking the power supply connection Sirona Dental Systems GmbH
Maintenance Instructions GALILEOS Comfort PLUS
Performing and analyzing a
measurement
1. Set the highest kV/mA level, e.g. 98kV /12mAs (see Operating
Instructions).
2. Make the SIDEXIS XG ready for exposure.
3. CAUTION! Activating the release button triggers X-rays.
Activate the release button and take the voltage drop reading on the
multimeter display.
ª If the measured voltage drop does
tolerance range
a suitable line voltage (according to the notes listed in the
Installation Requirements) must be installed.
(see the following table), notify the customer that
not fall within the permissible
IMPORTANT
In such a case, the unit must be switched off immediately and
disconnected from the junction box of the building installation. It must
not be placed in operation!
ª If the measured voltage drop falls within the permissible
tolerance range (see the following table), finalize the
measurement.
Permissible voltage drop:
Line voltage, with zero load Max. permissible
line voltage drop
180-208 V 9 V
208-230 V 8 V
230-240 V 7.5 V
240-264 V 7 V
Concluding the measurement 1. Switch the unit on via switch (A) (see also Operating Instructions).
2. Disconnect the unit from the junction box of the building installation.
3. DANGER! Wait at least 1 minute after disconnecting the unit from the
junction box of the building installation before removing the
measuring wires!
Remove the measuring units from the unit.
4. Re-attach the "Bottom profile" cover to the unit.
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Sirona Dental Systems GmbH 7 Checking the tube current
E
D
D
D
F
G
Maintenance Instructions GALILEOS Comfort PLUS
Checking the tube current
7
Checking the tube current
NOTICE
Damage to the measuring unit
The ring assembly and the tube assembly move during the
measurement.
Make sure that the measuring wires are sufficiently long to allow for the
ring movement and that the measuring unit is in a secure position so that
it will not fall down.
Preparing the measurement 1. Switch off the unit (see Operating Instructions).
DANGER! After switching off the unit, wait at least 4 minutes (LED
V500 on the DX6 must no longer be on) before removing the cover
on the tube assembly.
2. Loosen the 3 screws (D) and remove the lid of the tube assembly
cover (E).
3. Loosen the 4 screws (F) and remove the cover plate (G).
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7 Checking the tube current Sirona Dental Systems GmbH
Maintenance Instructions GALILEOS Comfort PLUS
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Sirona Dental Systems GmbH 7 Checking the tube current
E
D
Maintenance Instructions GALILEOS Comfort PLUS
4. DANGER! After switching off the unit, wait at least 4 minutes (LED
V500 on the DX6 must no longer be on) before removing jumper H
from the DX6 board.
Remove the jumper (H) from connector X302 on the DX6 board.
5. DANGER! Only use fully insulated measuring wires.
Connect the digital multimeter with the measuring wires to test points
MA- (X5-) and MA+ (X4+) at connector X302 on the DX6 board.
6. On the multimeter, select the current measuring range 20mA DC.
7. NOTICE! If the lid of the tube assembly cover is not attached, the ring
circulation is impeded and the unit can be damaged.
Temporarily install the lid of the tube assembly cover (E) on the unit
using the screw (D).
8. DANGER! Do not touch any live components!
Set the main switch (A) to I (see also Operating Instructions).
9. Wait for approx. 1 minute.
10. Press the R key.
ª The unit moves to its starting position.
Performing measurements, Galileos
Performing measurements 1. Call the Service menu and the Service routine S002.5 (see Service
Manual).
2. Select kV/mA level 85 kV/ 7 mA and 4 seconds of radiation time (see
Service Manual).
3. CAUTION! Activating the release button triggers X-rays.
Release the radiation. Hold the release button pressed until the set
radiation time has expired.
IMPORTANT
1mA corresponds to a tube current of 1mA. The permissible tolerance
is ± 20 %.
Analyzing measurements ➢ Read the voltage value on the display of the multimeter.
Evaluating measurements, Galileos
ª The tube current must be in the range of 7mA ± 1.4mA.
ª If the measured value does
tolerance, replace the
ª If the measured value falls within the permissible tolerance,
conclude the measurement.
not
fall within the permissible
tube assembly
(see Service Manual).
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7 Checking the tube current Sirona Dental Systems GmbH
E
D
F
G
E
D
D
D
Maintenance Instructions GALILEOS Comfort PLUS
Concluding the measurement 1. Switch the unit on via switch (A) (see also Operating Instructions).
2. Loosen the screw (D) and remove the lid of the tube assembly cover
(E).
3. DANGER! After switching off the unit, wait at least 4 minutes before
removing the measuring wires or reinserting the jumper!
Remove the measuring wires and bridge with the test points MA+/
MA- on the DX6 board again with the jumper (H).
4. Reattach the cover plate (G) to the tube assembly with the 4 screws
(F).
5. Reattach the lid of the tube assembly cover (E) to the unit and secure
it with the 3 screws (D).
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