Siemens Mammomat 3000 Nova Maintenance Instructions

Page 1
Friedrich
MAMMOMAT 1000/3000 Nova
SP
Maintenance Instructions
System
MAMMOMAT 1000/3000 Nova
The protocol SPB7-230.105.02.05.02 is required for these instructions
Print No.: Replaces: SPB7-230.101.02.04.02
SPB7-230.101.02.05.02
06134709
© Siemens AG
The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utility model or design, are reserved.
English Doc. Gen. Date: 02.06
2002
Page 2

2 Revision / Disclaimer

1Revision / Disclaimer
Document revision level
The document corresponds to the version/revision level effective at the time of system delivery. Revisions to hardcopy documentation are not automatically distributed.
Please contact your local Siemens office to order current revision levels.
Disclaimer
The installation and service of equipment described herein is to be performed by qualified personnel who are employed by Siemens or one of its affiliates or who are otherwise authorized by Siemens or one of its affiliates to provide such services.
Assemblers and other persons who are not employed by or otherwise directly affiliated with or authorized by Siemens or one of its affiliates are directed to contact one of the local offices of Siemens or one of its affiliates before attempting installation or service pro­cedures.
MAMMOMAT 1000/3000 Nova SPB7-230.101.02.05.02 Siemens AG
02.06 CS PS SP
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Medical Solutions
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Table of Contents 3
0 Table of Contents
1 _______ General information______________________________________________ 5
Training. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Required documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Required tools, measurement and auxiliary devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Required lubricants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Text emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Safety information and preventive measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Explanation of abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2 _______ System _______________________________________________________ 13
Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 _______ Column stand __________________________________________________ 17
Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4 _______ Compression and system movements _____________________________ 20
Testing the "Compression" function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Testing the "Decompression" function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Applying oil and grease. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Compression thickness display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Checking miscellaneous system movements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Checking miscellaneous system movements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 _______ Test exposures ________________________________________________ 25
Evaluating test values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Testing the dose rate control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Testing the radiation field/light field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Testing image quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Evaluating the films . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 _______ Miscellaneous _________________________________________________ 31
Blocking exposure release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Final tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
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Page 4
4 Table of Contents
7 _______ Changes since the previous version _______________________________ 34
MAMMOMAT 1000/3000 Nova SPB7-230.101.02.05.02 Siemens AG
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Medical Solutions
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General information 5
1-

1 General information

1.1 Training

Self-instruction packet or training workshop and at least 1 installation
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Page 6
6 General information

1.2 Required documents

Planning Guide SPB7-230.021...
MAMMOMAT 1000/3000 Nova Wiring Diagrams SPB7-230.051...
Installation and Start-Up Instructions SPB7-230.033...
Service Program SPB7-230.114...
Maintenance Protocol SPB7-230.105...
Instructions for Use SPB7-230.201...
Supplement to the Instructions for Use (Stereo) SPB7-230.203...
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General information 7

1.3 Required tools, measurement and auxiliary devices

NOTE
All tools, measurement and auxiliary devices, with the exception of those marked with "*", are listed in the STC (Service Tools Catalog) along with their specifications.
Oscilloscope
Digital multimeter
mAs meter
Service PC with connection cable
SIB phantom or Normi 7 or 4-cm Plexi or customer phantom*
Sensitometer/densitometer
Film pack 24 x 30 or larger
Cleaning agents* specified in the operating instructions
Protective conductor meter
Spring scale 0-20 kp (1 kp increments) with cord*
Water level
Spray enamel* according to the PG (to touch up chipped paint)
Standard installation tools*
Electric screwdriver* with sockets (recommended)
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8 General information

1.4 Required lubricants

All purpose grease PD2
Viscogen oil
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General information 9

1.5 Text emphasis

DANGER
WARNING
CAUTION
NOTICE
DANGER indicates that there is an immediate danger of death or serious physical injury.
¹ n.a.
WARNING indicates that there is a risk of possible death or serious physical injury.
¹ n.a.
CAUTION used with the safety alert symbol indicates that there is a risk of slight or moderate physical injury and/or damage to prop­erty.
¹ n.a.
NOTICE used without the safety alert symbol indicates that non-compliance may cause a situation leading to an undesirable result or state other than death, physical injury or damage to prop­erty.
¹ n.a.
NOTE
NOTE contains information provided with special emphasis to fa­cilitate proper use of the equipment or proper execution of a pro­cedure, i.e. hints, tips.
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Page 10
10 General information

1.6 Safety information and preventive measures

NOTE
When completing repair work and tests, please note:
- the product-specific safety information in the document,
- the safety information in TD00-000.860.01... ,
When the system is switched off via the operating panel or
S2/D711, line voltage is still present at the line voltage connec­tion for the generator, at line voltage filter Z1, at transformer T1, at transformer T10, and on board D711 (refer to circuit dia­gram).
After switching off the system, approximately 380 V DC may be
present in the intermediate circuit as indicated by the V24 LED on board D710. Within 3 minutes, the voltage will drop to less than 30 V, and the LED will go out.
Tests or adjustments that must be made with the radiation
switched on are identified by the radiation warning symbol.
During these types of adjustments, radiation protective cloth­ing must be worn.
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General information 11

1.7 Explanation of abbreviations

Abbrev. Explanation
SI Safety Inspection
SIE Safety Inspection, Electrical
SIM Safety Inspection, Mechanical
PM Preventive Maintenance
PMP Preventive Maintenance, Periodic
PMA Preventive Maintenance, Adjustments
PMF Preventive Maintenance, Function Check, Operating Value Check
Q System Quality, Image Quality
QIQ Image Quality
QSQ System Quality Check
SW Software Maintenance
CSE Customer Support Engineer
CS No.: Customer-specific number
IVK Installed Volume Component
WE Maintenance Unit
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12 General information

1.8 Symbols

Checks and adjustments that must be performed with the radiation ON are identified by the
X radiation warning symbol.
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System 13
2-

2 System

2.1 Checks

Fig. 1: MAMMOMAT checks
PMP Radiation protection
Check the radiation protection shield for possible damage (1/Fig.1/p.13).
Information regarding the lead equivalent value must be legible.
SIM Swivel arm/PPS tube attachment
Check the swivel arm/PPS tube attachment by pulling on both support rails
(a minimum play of approximately ± 2° is correct). (2/Fig.1/p.13).
SIM Basic table
Check the mounting of the basic table as well as the locking mechanism for the expo-
sure system (3/Fig.1/p.13).
SIM Flying wing (MAMMOMAT 3000 Nova only)
Check the "Flying Wing" locking mechanism (wing basic table). Swivel "wing 1"
("wing 1" is the table with the stereo connector) toward "wing 2" and back
(6/Fig.1/p.13).
SIM Level
Verify that the system is level with respect to the floor. Check the level screws
(4/Fig.1/p.13) with a water level and, if available, the floor mounting (optional).
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14 System
PMP Face shield and compression plate
Check the face shield and compression plate for correct seating and for damage
(5/Fig.1/p.13).
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System 15

2.2 Preparations

Fig. 2: X-ray tube covers
Fig. 3: Covers
SIE Cables
Fig. 4: Generator front covers
System OFF
Check the condition of the cables and the corrugated tubing (3/Fig.2/p.15) while re-
moving the following covers:
- X-ray tube covers (left, right, and front) (1, 2/Fig. 2 / p. 15)
- All covers of the stand (3, 6/Fig. 3 / p. 15)
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16 System
NOTE
The edges of the metal curtain are very sharp and can cause se­vere injury. Attach the protective strips.
- Generator front cover (3/Fig.4/p.15).
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Column stand 17
3-

3 Column stand

3.1 Checks

SIM Steel ropes
Do the steel ropes (balancing and flap), the drive belt, the suspension, or the pulleys
have any damage (e.g. fraying or splitting) or show signs of wear?
PMA Oil and grease
If they are OK, lightly oil the wire cable, grease the rails, and then remove the protective
strips.
SIE Limit switches
System ON. Move the lifting carriage up and down several times, the lifting carriage
should be in an upright (0°) position.
NOTE
It is normal to hear some noise from the rotation of the radiation filter in the collimator when switching the system ON.
Do the limit switches stop carriage travel at the top and at the bottom?
Activate safety switch S882. System movements must be blocked.
PMF Vertical travel
Is the vertical travel smooth and noiseless?
Switch OFF the system and attach the protective strips once again.
SIM Safety catch and rotation safety catch
Do the safety catch (1/Fig.1/p.17) and rotation safety catch (2/Fig.1/p.17) have any
visible damage? Are the springs in good condition?
Fig. 1: Safety catch
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Page 18
18 Column stand
SIM Ball bearings
Depending on the serial no. of the MAMMOMAT, the lifting carriage is equipped with ei-
ther ten or twelve ball bearings (refer to (Fig.2/p.18)). The two ball bearings that are missing in MAMMOMATs with ten bearings are only indicated in the figure. Check that all ball bearings are in place and that they show no sign of damage.
Fig. 2: Lifting carriage
Pos. 1 Not on all MAMMOMATs
SIM Mounting for the X-ray tube
Fig. 3: X-ray tube
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Column stand 19
Check the mounting for the X-ray tube unit (1/Fig.3/p.18).
PMA Grease the grid spindle
Fig. 4: Grid spindle
Remove the cover plate from the object table and lightly grease the grid spindle
(1/Fig.4/p.19). Reattach the cover plate.
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Page 20
20 Compression and system movements
4-

4 Compression and system movements

4.1 Testing the "Compression" function

Fig. 1: Compression
Attach the spring scale as shown in (1/Fig.1/p.20) and be careful not to damage the
compression plate during the following tests: Tolerance: ±1 kp.

4.1.1 Switching off

System ON
PMF Presetting
Select any value (e.g. 6 kp) on the potentiometer (2/Fig.1/p.20) and compress. Does
the compression unit switch off at this setting?
SIE Max. value switch off
Select the maximum value (20 kp) with the potentiometer (2/Fig.1/p.20). (20 kp).
Does the unit switch off when it reaches the maximum value?
Correct display (7/Fig.1/p.13).
PMF OPCOMP
Position your forearm between the object table and the compression plate and check
the OPCOMP function.
¹ Typically, the cutoff value is between 6 and 10 kp at the factory setting.
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Compression and system movements 21

4.2 Testing the "Decompression" function

Fig. 2: Compression unit with covers Fig. 3: Compression unit without covers
Attach the spring scale as shown in (1/Fig.2/p.21).
Tolerance: ±1 kp.

4.2.1 Switching off

SIE Safety switch
Does decompression switch off at a counter pressure of approximately 5 kp?
¹ Because of the measurement location, this value corresponds to a value of
approximately 3 kp at the compression plate.

4.2.2 Travel

PMF Compression travel
Move the compression plate up and down. Is the movement smooth and noiseless
through the entire range?

4.2.3 Applying oil and grease

PMA Apply oil and grease to the compression unit
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22 Compression and system movements
System OFF
Remove the upper and lower covers (snap closures, (2/Fig.2/p.21) and pot knob
(3/Fig.2/p.21).
After removing the "small" Allen screws (two above and two below), the right cover
(4/Fig.2/p.21) of the compression unit can be removed.
Grease the rails (2/Fig.3/p.21) lightly and check the belt (1/Fig.3/p.21) and string
(3/Fig.3/p.21) for damage/wear as well as for tension.
Reinstall the covers on the compression unit.
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Compression and system movements 23

4.3 Compression thickness display

PMF Thickness indicator
System ON. Move the compression plate to its full height and measure the height.
¹ The value displayed (7/Fig.1/p.13) must agree with the value measured.
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24 Compression and system movements

4.4 Checking miscellaneous system movements

4.4.1 Checking miscellaneous system movements

SIE Switch off
Check whether the motorized rotation movements shut off when a preset angle is
reached. The angle (e.g. 90°) is preset with the potentiometer, (3/Fig.1/p.13).
Check the automatic switch-off function when passing the 0° position as well.
PMF Rotation movements
Is the rotation movement smooth and noiseless through the entire range?
Is the display correct (7/Fig.1/p.13)?
SIM Blocking rotation and vertical travel
Rotation and vertical travel must be blocked at a compression force of > 3 kp.
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Test exposures 25
5-

5 Test exposures

System OFF
Connect the following measurement devices:
- Service PC to D702.X990
- Oscilloscope to MP kVactual.X711 (1V 5kV) and mAactual.X707, OVA.X708 (1V 40mA)
- mAs meter to D710 (remove X3 - X4 jumpers)
- Multimeter at MP.BIAS on D706 (measurement range 200V=)
System ON
X
Test the kV/mA control loop according to the Installation & Start-Up Instructions, chap-
ter "Checks with high voltage".
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26 Test exposures

5.1 Evaluating test values

PMF Anode acceleration
Listen to the sound generated by the accelerating anode. Is the sound normal?
PMF kV and mA
Do the measured kV and mA values agree with the values selected?
PMF mAs selection
Do the measured mAs values agree with the values selected?
PMF mAs value displayed
Does the measured mAs value agree with the displayed mAs value (for AEC)?
PMF Grid voltage
Attach the magnification table. Measure the grid voltage (small focus) on tube test point
G against test point H col?
Test both focal spots (if available).
PMF Signal lamp
. Does the measured value agree with the value in the test proto-
3
Does the radiation-ON indicator light up?
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Test exposures 27

5.2 Testing the dose rate control

X Cover the measurement field (e.g.with a lead apron) and release an exposure.
PMF Dose rate control
Does the dose rate control circuit switch OFF the exposure after approximately 100
ms? (The value is 50 ms for MAMMOMAT 1000/3000 Nova with serial no. 7000 and higher or MAMMOMAT 1000/3000 with a serial number lower than 7000 but upgraded with the "AEC upgrade kit", i.e. having
- generator and stand with firmware version 4.0 or higher, and
- service software version 4.1 or higher.)
Check both wings (MAMMOMAT 3000 Nova only).
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Page 28
28 Test exposures

5.3 Testing the radiation field/light field

X Proceed with the test according to the Installation & Start-Up Instructions, chapter
"Checking the radiation field limitation".
PMF Format collimation
Is the format collimation correct? (18 x 24, 24 x 30, small focus)
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Test exposures 29

5.4 Testing image quality

Attach the most frequently used exposure system (e.g. grid table 18 x 24).
Load the "test cassette" with film and insert it.
Position the SIB phantom over the 2-cm Plexiglas or other IQ phantom (e.g. Normi 7).
Select the most frequently used kV value, AEC and automatic decompression.
X
PMF Automatic decompression
Compress slightly and release an exposure.
Does decompression occur immediately following the end of the exposure?
In addition, expose a sensitometer strip and develop the exposure.
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Page 30
30 Test exposures

5.5 Evaluating the films

QIQ Phantom exposures
Compare the phantom exposures to those on hand and/or archive them for the next
maintenance as starting values.
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Miscellaneous 31
6-

6 Miscellaneous

6.1 Blocking exposure release

PMF Blocking
Exposure release must be blocked under the following conditions
(indicated on the control console):
- No cassette is inserted.
- Cassette was not changed after the last exposure.
- Table is not attached or not locked in place.
- Wing 1 or wing 2 is not locked in place. (Mammomat 3000 Nova only).
- For stereo only: no external collimator for beam limitation in the collimator. (Mammomat 3000 Nova only).
- The two exposure release switches were not pressed simultaneously.
- No external collimator for 18 x 24 or magnification. (Mammomat 1000 only).
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32 Miscellaneous

6.2 Checks

SIE Emergency STOP
Press Emergency STOP, see chapter "Compression and system movements"
(4/Fig.1/p.20).
- Are the compression, rotation and vertical travel of the lifting carriage blocked?
Release the Emergency STOP.
PMF Indicators
Check the LEDs on the operating console by starting the panel test via the service PC.
PMP Error memory
Read out the error memory and the exposure counter with the service PC.
PMP Record the error memory.
PMP Delete the error memory.
Enter the data from the exposure counter and the error memory in the protocol and de-
lete the error memory only.
PMF Auxiliary voltages
Use the voltmeter to measure the auxiliary voltages according to circuit diagram
X041E, sheet 2-12/13 (test points on D801, D802 and D704).
System OFF
PMF Cassette locking
Check that the cassettes being used lock in properly to the object tables.
PMF OPDOSE
Check the selection of various anode/filter combinations and OPDOSE according to the
Installation Start-Up Instructions, chapter "Start-up and functional test of the ION­TOMAT" or "Calibrating and adjusting the AEC".
PMF Stereo unit (Mammomat 3000 Nova only)
If attached, check the stereotactic biopsy option according to the supplement to the In-
structions for Use.
PMA UIs and SPEED info
Check whether all relevant UIs and SPEED info has been completed.
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Miscellaneous 33

6.3 Final tests

Remove the measurement devices.
PMF Operating problems
Were there any operating problems during the checks?
PMP Covers
Remove the protective strips and attach all removed covers. Check that all covers are
completely and firmly attached, including the cable duct.
SIE Protective conductor test
Perform the protective conductor test according to ARTD-002.731.17....
PMP Cleaning/damaged paint
Clean the unit using the materials recommended in the Instructions for Use and repair
any damaged paint.
System ON.
QSQ Final test exposure
Take one final test exposure.
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Page 34
34 Changes since the previous version
7-

7 Changes since the previous version

Document was converted to DMS.
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