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Siemens MAMMOMAT 300 Скачать руководство пользователя страница 54

Siemens-Elema AB

SPS-UD

RX B7-120.033.01.10.02

MAMMOMAT 300

Solna, Sweden

05.98

65 02 186

Start-up and functional test of the IONTOMAT

12-3

Other film/screen combinations

In case the customer uses another film/screen combination than those the correction
curves are optimized for, see table 1 of correction curves on page 12-1, proceed as fol-
lows:

1

Begin with curve C2 and make test exposures using a grid table at 25 kV, 2 and 6 cm
plexi (5 cm if limit (ER550) or ER 013 occurs, due to insufficient dose rate). If the
image from 6 cm plexi (O.D.-6 cm) is lighter than one from 2 cm plexi (O.D.-2 cm),
choose correction curve A2 or B2 (A2 makes images from thick objects darker than
B2 does, i.e. A2 corrects more than B2). On the other hand, if O.D.-6 cm is darker
than O.D.-2 cm, choose curve D2. Repeat the test with the chosen curve. The differ-
ence between O.D.-6 cm and O.D.-2 cm (

∆ Ο.

D

.)

should be less than 0.30 O.D.

2

Now test 27 kV, 2 and 6 cm. Try even 30 and 35 kV if these kV´s are of interest for
the customer. If this

∆ Ο.

D

.

is

≤

0.30 O.D., go to 3. If not, it is necessary to test an-

other curve (choose between A2, B2, C2 and D2) at 27 kV. Choose the best one and
repeat the test at 25 kV. Continue in this manner until the result is as good as possible
for the kV´s of interest for the customer. Diagrams 1, 3, 5 and 7 on the following pag-
es can be of help. Note that the steeper the curve is, the more the thicker objects are
corrected (they will be darker).

3

Check also the correction with 2 cm plexi between the different kV values of interest.
If this

∆ Ο.

D

.

is

≤

0.30 O.D., an acceptable curve has been chosen. It may not be pos-

sible to reach the specified O.D. corrections, choose then the best compromise for the
customer´s needs.

4

Do the same tests with magnification table, but use 2 and 5 cm plexi instead. The pe-
missible

∆ Ο.

D

.

for magnification tables is

≤

0.40 O.D. Choose between correction

curves A1, B1, C1 and D1. Diagrams 2, 4, 6, and 8 on the following pages can be of
help.

NOTE!

When necessary, curve A2, B2, C2 and D2 can be used for magnification tables and/or
A1, B1, C1 and D1 for grid tables. In general, the X1-curves (magnification) correct more
than the X2-curves.

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Содержание MAMMOMAT 300

Страница 1: ...a n den Zu w i der ha n dl u n g ver pf l i cht enzu Scha den er sa t z A l l e Recht e f ü rdenFa l lderPa t en t ertei l u n g oderG M Ei n t r a g u n g vorbeha l t en Propr i et r y da t a com pa n y con f i den t i a l A l lr i g ht s reser ved Con f i é a t i t r e de s ecr etd en t er pr i se Tou s droi t s r éservés Con f i a do com o s ecr et o i n du s t r i a l Nos reser va m os t odos ...

Страница 2: ...g the transport safeguards 3 3 Removing the swivel arm system transport safeguard 3 3 Transport safeguard for the lifting carriage 3 3 Transport safeguard for the rotary motion 3 4 Protective strips for the metal curtain 3 4 Unpacking the generator and mounting the radiation field 3 5 4 Installing the generator and the stand 4 1 Arranging the components 4 1 Removing the generator cover 4 2 Install...

Страница 3: ... the generator 7 1 Measuring the line resistance 7 1 Checking the line voltage in the generator 7 2 Checking the supply voltages 7 3 8 Attaching the swivel arm covers 8 1 Attaching the swivel arm covers 8 1 Arranging the swivel arm system 8 1 Connecting the cables to control button board and patient handles 8 1 Attaching the covers 8 2 9 Checking the microprocessors 9 1 Microprocessors 9 1 10 Chec...

Страница 4: ... time in the mammomat 13 1 Setting the tube current reduction 13 1 Reducing the generator power 13 2 14 Checking the swivel arm system 14 1 Rotary motion 14 1 Vertical adjustment 14 2 Emergency stop 14 3 15 Field light 15 1 Checking and adjusting the field light time 15 1 Checking the field light time 15 1 Adjusting the field light time 15 2 16 Checking the compression device and OPCOMP 16 1 Check...

Страница 5: ...istance 19 2 Mounting the cable duct covers 19 2 Mounting the stand covers 19 3 Mammomat stand with separate rear side covers 19 3 Mammomat with single rear cover 19 4 Fitting the cable outlet cover 19 5 Mounting the front cover onto the generator 19 5 Final protective grounding resistance test 19 6 Face shield 19 6 Warning label on control panel 19 7 20 Options 20 1 Bolting the stand generator to...

Страница 6: ...s part no 96 60 051 RE 999 Plexiglass plates three plates measuring150 mm x 150 mm x 20 mm and one plate measuring 150 mm x 150 mm x 10 mm part no 85 49 438 and 97 88 423 respective ly WARNING For safety reasons the existing protective ground conductor in the power cord must un der no circumstances be disconnected when operating the oscilloscope For those mea surements in which any resulting groun...

Страница 7: ...test of the Iontomat Programming the Correction curve Setting the sensitivity film density Setting the sensitivity correction adaption to different exposure techniques Section 13 Further programming Section 19 Final procedures Recording the programmed values Reading the exposure counter and deleting the error memory NOTE If the generator is switched off with the Service PC connected wait approxima...

Страница 8: ...mAs accuracy Automatic exposure control AEC Coincidence of radiation field image receptor Alignment of light field x ray field Illuminance of light localizer light field Shut down of motor driven compression movement The result must be recorded in Measurement certificate RX B7 120 037 Some of the values to be determined can be taken from the acceptance test certificate The radiation field limitati...

Страница 9: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 1 4 Prerequisites This page intentionally left blank ...

Страница 10: ... accidental triggering of high voltage cable and radiation set the switch S2 SS on p c board D702 to OFF lower position no triggering of the SS relay WARNING After shut down of the system there may still be about 380 V DC present on the interme diate circuit This will be indicated by LED V24 on p c board D 710 The voltage will drop to less than 30 V within about 3 minutes the LED goes out at about...

Страница 11: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 2 2 Protective measures This page intentionally left blank ...

Страница 12: ...llation material Miscellaneous small parts Stanchions for the lead glass pane radiation shield Cable ducts Technical documents Cardboard box lenght 1210 mm width 820 mm height 700 mm The cardboard box contains Generator with integrated control panel high voltage generator and base plate Lead glass pane Unpacking As a general rule the directional marks on the crates should be observed during transp...

Страница 13: ...ing 1 Open the stand crate by removing the top 1 and then the side wall 2 2 Take out all enclosed packages accessories installation material cover panels etc from the crate 3 Remove the wooden supports 4 Remove the remaining walls 3 5 Upend the stand 4 with pallet 5 two persons are required 6 Loosen the four bolts 6 and remove the pallet 5 MAM00080 1 2 2 1 3 6 5 4 ...

Страница 14: ...ard 1 Loosen the transport safeguard nuts 1 and remove the tube head screws 2 2 Push the red transport safeguard 3 inwards away from the tube head NOTE Removal of the swivel arm system transport safeguard is done after the equipment has been powered up see further section Attaching the swivel arm covers page 8 1 Transport safeguard for the lifting carriage Figure 3 Transport safeguard for the lift...

Страница 15: ...rt Transport safeguard for the rotary motion Figure 4 Transport safeguard for the rotary motion 1 Remove the transport safeguard screw 1 to enable rotary motion The screw 1 should be kept for future need Protective strips for the metal curtain Figure 5 Protective strips for the metal curtain The edges of the metal curtain are very sharp and are therefore provided with protective strips 1 on delive...

Страница 16: ...when not in use are provided on both sides of the curtain see Figure 5 Unpacking the generator and mounting the radiation shield Figure 6 Unpacking the generator 1 Open the cardboard box by cutting the plastic straps 2 Lift out the lead glass pane and put it away in a safe place 3 Remove the protective cover from the generator 4 Upend the generator 1 and lift it off the pallet 2 two persons are re...

Страница 17: ... 6 Insert sheet metal strip 5 additional radiation protection and vibration absorbing strip 6 into both stanchions 7 Fit the lead glass pane 4 into the groove of the stanchion and keep it in position while mounting the other stanchion onto the generator 8 Cover the holes with plastic caps 7 MAM00086 3 7 4 6 5 ...

Страница 18: ...ft or to the right of the the stand Maximum cable length between stand and generator is approximately 3 5 meter Radiation shield 2 perpendicular to visual line between generator and focus of the tube head 4 according to Figure 1 Recommended minimum distance to wall and generator base plate respectively is 700 mm shorter distances may be used at the customer s desire if in compliance with lo cal re...

Страница 19: ...emove the sixteen screws 2 eight on each side NOTE Pay special attention to the contact washers there are four contact washers on either side They are needed again when reassembling the front cover to establish protective ground connection and to fulfil EMC Electro Magnetic Compatibility requirements 2 Remove the front cover 3 from the generator Figure 2 Removing the generator cover MAM00091 3 1 2...

Страница 20: ...pped by the cable outlet cover 4 Figure 3 Installing the cable ducts top view 4 Mark the outlines of the cable ducts 1 on the floor 5 Cut the bottom of the cable ducts 6 and the cable duct cover 5 to proper length NOTE Figure 3 shows a right angled installation of the cable ducts If the generator is to be in stalled at an other angle to the stand you just have to cut the cable ducts correspondingl...

Страница 21: ... cable end 1 Separate the cable harness 2 Lay the stand cable harness in the cable duct as shown in Figure 4 all the way to the generator Figure 4 Laying the cable harness The cable harness consists of four shield cables see Figure 4 Pos in fig 4 Description 1 High voltage cable H1 2 IONTOMAT signal cable X11 Unit control cable X1 Power supply cable X14 3 Anode rotation cable X9 Filament cable X8 ...

Страница 22: ...ically by means of the levelling screws 1 For adjustment of the levelling screws use a ratchet spanner 1 2 with extension without socket NOTE It is important that all six levelling screws bear against the floor to ensure optimum sta bility of the stand 2 Cover the levelling screws with the cover discs supplied Figure 5 Levelling screws NOTE If bolting to the floor is required please refer to secti...

Страница 23: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 4 6 Installing the generator and the stand This page intentionally left blank ...

Страница 24: ...e clamps and ferrite sleeves Figure 1 Cables from the stand 1 Lay the cable harness from the stand to the generator and leave approximately 3 cm of the shielding at the U bracket see Figure 1 If the cable harness is too long put away free cable length as ahown in Figure 2 2 Fit on a hose clamp 3 on each cable Hose clamps are included in the delivery 3 Fold the shield braid 1 backwards over the U b...

Страница 25: ...ble connections Figure 2 Ferrite sleeves and hose clamps 4 Provide each incoming cable with a ferrite sleeve 4 except for mains supply cables L1 and L2 and the ground wire which shall be laid together in one and same ferrite sleeve Ferrite sleeves are included in the delivery MAM00098 4 1 3 2 3 2 ...

Страница 26: ...ation on cables X1 X8 and X9 to lay bare the shield braid 1 3 Select proper clamps 2 with regard to the thickness of the cables cable clamps in different sizes are provided on the bottom plate 4 Fit the clamp 2 over the shield braid and screw tight to ensure satisfactory contact between shield braid and clamp 5 Install and tighten the four screws 3 and contact washers 4 at the bottom plate NOTE Ca...

Страница 27: ...e high voltage connector 1 is factory adjusted for correct fit Mount the angular ca ble sleeve halves and sleeve nut Type B only The high voltage connector shall be in serted with silicone oil silicone rubber ring 2 and silicone rubber disc 3 Lubricate the silicone rubber disc and the pins with silicon oil before mounting the disc Make sure that there aren t any air bubbles between the disc and th...

Страница 28: ...connector 1 at H1 2 Tighten the sleeve nut 2 by hand 3 Tighten the stop screws on the sleeve nut 4 Position the high voltage cable 3 to the right in the generator and fasten with cable ties 4 Type B 1 Plug in the high voltage connector 1 at H1 2 Tighten the sleeve nut 2 by hand 3 Position the high voltage cable 3 to the right in the generator and fasten with cable ties 4 3 2 tillf00162 4 1 3 2 4 1...

Страница 29: ...Cable harness at the generator Unit control cable X1 1 Connect the unit control cable X1 to D700 X1 1 Filament cable X8 1 Connect the filament cable X8 to D700 X8 2 Power supply cable X14 1 Connect the power supply cable X14 to D711 X14 3 2 Strain relieve it on the side with a cable tie 4 IONTOMAT signal cable X11 1 Connect the IONTOMAT signal cable connector X11 to D700 X11 5 MAM00102 2 1 5 3 F10...

Страница 30: ...gure 7 Connecting X9 to the generator 1 Connect the rotating anode cable X9 to D711 X9 1 2 Connect the two blue free wires from connector D711 X9 1 to capacitor C51 2 3 Fit the cable to the chassis by using a cable clamp 3 CAUTION When fitting the cable clamp ensure satisfactory contact between shield braid 4 and chassis 2 1 MAM00163 4 3 ...

Страница 31: ...tion or removal of fuses and labeling is specified in the wiring diagram see Line Input page 5 3 Change the rated voltage labels to the correct voltage there are two labels on the genera tor and one on the stand Labels are included in the installation material NOTE For more details about changing mains removal of short circuit fuses and labeling etc see Wiring Diagram Connecting the incoming mains...

Страница 32: ... is no wire jumper at F20 1 and no brass plug at F5 2 Fuses must be inserted into fuse holders F20 and F5 2 Connect the mains supply cables between stand and generator to fuses F10 and F20 on the generator Wire marked L1 to F10 and L2 N to F20 3 Connect the protective ground wire from the stand to the generator 3 TWO PHASE GENERATOR STAND F10 F20 X881 Incoming mains 208 230 240 277 or 400 VAC P E ...

Страница 33: ...y 0 V to N and fuse F20 3 Strain relieve the incoming mains cable as shown in Figure 8 4 Short circuit F20 1 and F5 2 in Figure 10 with the jumper and brass plug included in the service bag CAUTION For single phase mains connection make sure that the neutral conductor of the power supply 0V is connected to terminal N and fuse F20 NOTE Connections on transformer T10 must be adjusted according to ac...

Страница 34: ...t screws 3 on the front side 2 Remove the four screws 4 two on each side 3 Withdraw the steel bottom plate 5 and the spacing plate 6 4 Install the new steel bottom plate and spacing plate included in the package Be careful with the switch and wire 7 Make sure that the switch actuator 8 is in proper position 5 Fasten with screws 4 two on each side NOTE It is recommended that the spacing plate and b...

Страница 35: ...e 2 Remove the six nuts 4 on the underside 3 Withdraw the steel bottom plate 5 and spacing plate 6 4 Re insert the steel bottom plate 5 with the new spacing plate included in the package into the object table Be careful with the switch and wire 7 Make sure that the switch actuator 8 is in proper position 5 Secure the assembly with the six nuts 4 Be sure the grounding spring 9 is in place NOTE It i...

Страница 36: ...sition output service PC Figure 1 P C board D702 Measuring the line resistance See Figure 2 1 Remove fuses F10 1 and F20 2 or when single phase supply fuse F10 1 2 Connect line resistance meter to fuse holders F10 and F20 3 Mains supply ON 4 Carry out measurement 5 Mains supply OFF MAM00106 J39 J50 UZW SS TEST S1 S2 S3 ZBL AR KVE BRAKE STATUS VH NSE1 NSE2 DS SS BS GND X990 X965 X962 X964 X961 X960...

Страница 37: ...bove values are exceeded reduce the generator power in accordance with section 13 in this manual Checking the line voltage in the generator 1 If not already done remove fuses F10 1 and F20 2 or when single phase supply fuse F10 1 Figure 2 Line voltage in the generator 2 Mains supply ON 3 Measure the voltage at fuse holders F10 1 and F20 2 4 Check that the mains voltage agrees with the voltage plug...

Страница 38: ...s located under the line filter Z1 5 There must be 195 V 253 V between the terminals 9 Measure the voltage at the output of line filter Z1 it must lie within 195 V 264 V Checking the supply voltages The correct supply voltages 5 V 15 V and 24 V have already been tested in the fac tory Only a visual check of the function is therefore needed 1 System ON 2 Check that the following orange diodes are O...

Страница 39: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 7 4 Mains connection and power supply This page intentionally left blank ...

Страница 40: ...k wise rotation on the supporting arm CAUTION Do not perform any vertical adjustment of the swivel arm system before the protective strips have been removed from the metal curtain 3 System and mains OFF 4 Remove the swivel arm system transport safeguard see section 3 Connecting the cables to control button board and patient handles Figure 1 Connecting the cables Before installing side covers cable...

Страница 41: ...in different size are included in the delivery Figure 2 Covers and sign 1 Mount the side covers 1 with six screws 2 on each side NOTE Don t forget to fit the sign 3 when mounting the side covers Use the two longer screws 2 Mount the front cover 4 over the side covers by engaging the bottom end first and fasten with two short screws 5 MAM00109 5 4 1 2 3 ...

Страница 42: ... the relevant microprocessors are operating correctly 1 Mains and system ON Following conditions must be indicated after not more than 15 s P C board D711 V9 ON line voltage on V13 OFF system stand by V11 ON system on V16 ON intermediate circuit filament MAM00110 Microprocessors for LED displays Master P c board D702 IONTOMAT PM P c board D701 Must be off Flashing rapidly Must be off Must be flash...

Страница 43: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 9 2 Checking the microprocessors This page intentionally left blank ...

Страница 44: ... p c board D702 set switch S1 UZW to ON upper position and switch S2 SS to OFF lower position 3 System ON 4 Press the exposure buttons on the control panel The rotating anode shall start up At the end of the limit time the rotating anode is braked 5 Release the exposure buttons NOTE If the exposure buttons are prematurely released Limit will be indicated 6 System OFF ...

Страница 45: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 10 2 Checks without high voltage This page intentionally left blank ...

Страница 46: ... that the high voltage plug is plugged into H1 and locked Figure 1 P C board D705 1 Set the switch S2 SS to ON upper position on p c board D702 2 Remove the jumper and connect the mAs meter to mAs measuring sockets X3 and X4 on p c board D710 MAM00111 ZBL BRAKE X703 V39 V41 V40 X706 X707 X705 X704 X713 X710 X712 X711 X708 X714 X715 X716 X717 X709 kV 17 kV 50 WR_AUS MASOLL MAIST IHSOLL IHIST UZIST ...

Страница 47: ...witch to 0 with the service PC program Stand configu ration Stand installation Cassette loaded check 0 function deactivated 3 Trigger test exposures with the following exposure values and check the kV values and tube current characteristic on the oscilloscope se oscillograms The accuracy of the kV is 5 plus 1 5 kV during the first 5 ms of the exposure For mA values 50 mA the accuracy of the kV is ...

Страница 48: ...ure 5 MAMMOMAT 300 with tube current reduction switched on Iontomat mode with Bucky see Figure 6 MAMMOMAT 300 in Iontomat mode with tube current reduction switched off see Figure 7 NOTE Record the measured kV and mAs value in the measuring protocol page 21 3 Tube P49 Mo molybdenum anode 0 3 Figure 2 30 kV 1 V T 1 V 5 kV 125 mA 1 V T 1 V 40 mA 20 ms T MAM00112 30 kV 20 mAs P 3 75 kW ...

Страница 49: ...n 05 98 65 02 186 11 4 Checks with high voltage Tube P49 Mo molybdenum anode 0 3 Figure 3 35 kV 2 V T 1 V 10 kV 107 mA 1 V T 1 V 40 mA 0 2 sec T Figure 4 25 kV 1 V T 1 V 5 kV 150 mA 2 V T 1 V 80 mA 0 1 sec T MAM00113 35 kV 100 mAs P 3 75 kW MAM00114 25 kV 100 mAs P 3 75 kW ...

Страница 50: ...s with high voltage 11 5 NOTE Small focus is selected by attaching a magnification table NOTE Record the measured kV and mAs value in the measuring protocol page 21 3 Tube P49 Mo molybdenum anode 0 15 Figure 5 30 kV 1 V T 1 V 5 kV 23 mA 0 5 V T 1 V 20 mA 100 ms T MAM00115 30 kV 10 mAs P 0 70 kW ...

Страница 51: ...0 3 Figure 6 30 kV 1 V T 1 V 10 kV 125 mA 1 V T 1 V 40 mA 100 ms T total exposure time depending on programmed sensitivity Figure 7 30 kV 1 V T 1 V 5 kV 125 mA 1 V T 1 V 40 mA 100 ms T total exposure time depending on programmed sensitivity MAM00116 30 kV Iontomat w grid P 3 75 kW 40 mm plexiglass MAM00117 30 kV Iontomat P 3 75 kW 40 mm plexiglass ...

Страница 52: ...B both H and D see also M300 Service Instructions If the film screen combination used by the customer is not listed in table 1 start with sensitivity 11 NOTE Be sure to use the same type of cassette screen and film in each object table as the customer uses Indicates the sensitivity for the IONTOMAT channel for contact exposure tables H and magnification tables D Values from 0 to 31 can be entered ...

Страница 53: ...am Correction curve according to table 1 above see also M300 Service Instruc tions If the customer uses another combination or mixture of those listed in tale 1 please refer to page 12 3 Indicates which correction curve shall be used for contact exposure tables H and magnification tables D Values shown as delivered MAM00127 IONTOMAT PM Sens correction Without grid 1 Help 2 Save 3 4 5 6 7 8 9 10 Qu...

Страница 54: ...of interest for the customer If this Ο D is 0 30 O D go to 3 If not it is necessary to test an other curve choose between A2 B2 C2 and D2 at 27 kV Choose the best one and repeat the test at 25 kV Continue in this manner until the result is as good as possible for the kV s of interest for the customer Diagrams 1 3 5 and 7 on the following pag es can be of help Note that the steeper the curve is the...

Страница 55: ...ent and Transparency correction are the values shown in Normal mode Ion tomat data with the service program 0 5 10 15 20 25 30 70 71 72 73 74 75 76 77 78 79 85 quotient thick object thin object transp corr dark light 25 kV Grid A2 B2 C2 D2 Diagram 1 MAM00118 35 81 82 83 80 84 0 5 10 15 20 25 30 75 66 67 68 69 70 71 72 73 74 80 quotient thick object thin object transp corr dark light 25 kV Magnific...

Страница 56: ... quotient thick object thin object transp corr dark light 27 kV Grid A2 B2 C2 D2 Diagram 3 MAM00120 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 0 5 10 15 20 25 30 quotient thick object thin object transp corr dark light 27 kV Magnification A2 B2 C2 D2 Diagram 4 MAM00121 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 35 40 ...

Страница 57: ... thick object thin object transp corr dark llight 30 kV Grid A2 B2 C2 D2 Diagram 5 MAM00122 35 85 87 89 91 93 95 97 99 101 103 105 107 109 111 113 115 119 121 123 125 117 0 5 10 15 20 25 40 quotient thick object thin object transp corr dark light 30 kV Magnification A2 B2 C2 D2 Diagram 6 MAM00123 85 87 89 91 93 95 97 99 101 103 105 107 109 111 113 115 119 117 30 35 ...

Страница 58: ... 7 0 5 10 15 20 25 30 100 105 110 115 120 125 130 135 140 145 150 quotient thick object thin object transp corr dark light 35 kV Grid A2 B2 C2 D2 Diagram 7 MAM00124 0 5 10 15 20 25 30 100 105 110 115 120 125 130 135 140 145 quotient thick object thin object transp corr dark light 35 kV Magnification A2 B2 C2 D2 Diagram 8 MAM00125 95 35 ...

Страница 59: ...exposures ensure correct positioning of the plexiglass plates NOTE Detector nearest chest wall Place the plexi plates in the same position for all exposures and measure the density as shown above on the emulsion side of the film Button D should be used for magnifcation tables and button H for other object tables with or without grid Start with the sensitivity listed in table 1 and adjust a density...

Страница 60: ...tomer within 25 35 kV If the dose rate is too low error 013 or Limit use 50 mm plexi instead of 60 mm Tolerance 0 3 density difference at constant voltage and thickness 20 60 mm 0 3 at constant thickness and 25 35 kV NOTE Tolerance valid for grid tables and film screen combination according to table 1 These limits apply for film with max gamma 4 0 measured at the density chosen NOTE The film densi...

Страница 61: ...e the NORMI 7 test body on the object table flush with the chest wall side 3 Slide film cassette into the object table 4 Trigger the first exposure 5 Note the mAs reading QG 1 shown on the control panel 6 Develop the film Measure the resolution Rg and the density D and enter in the form 7 Position the dosimeter chamber in the cassette slot 8 Select 250 mAs on the control panel 9 Trigger second exp...

Страница 62: ... 30 kV and AEC 2 Place the test body on the object table flush with the chest wall side 3 Slide film cassette into the object table 4 Trigger the exposure and develop the film 5 Measure the resolution A D density 1 4 and the over radiation on the chest wall side and enter in the form steel balls 6 Read off the pen dosimeter and record the dose value Plexiglass steps Woven steel wire 1 40 mm A 100 ...

Страница 63: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 12 12 Start up and functional test of the IONTOMAT This page intentionally left blank ...

Страница 64: ...ent reduction In Mammomat 300 the tube current reduction is factory set to ON which means that the tube current is reduced to approx 50 mA during the first 100 ms of the exposure In this way possible grid lines are avoided If the tube current reduction is set to OFF grid lines may occur at short exposure times 100 ms NOTE The tube current reduction is effective only in Iontomat mode Main menu 1 Se...

Страница 65: ... 0 65 Ohm at 277 V 0 85 Ohm at 400 V 2 phase If the above values are exceeded reduce the generator power as follows Main menu 1 Select Configuration ENTER 2 Select Miscellaneous ENTER 3 Select Red of power ENTER Reduction of power depending on line quality Tube is P 49 Mo 03 4 Select nominal line voltage ____ V with cursor keys and ENTER 5 Type in line impedance ____ Ω Enter the measured line impe...

Страница 66: ...el arm system 2 System ON object table installed and set projection angle to minimum with preset ting knob 2 3 Check the rotary motion of the swivel arm system by pressing buttons 1 one by one The rotation of the swivel arm system shall stop when the button is released or when end position is reached 135 degrees clockwise and 180 degrees counter clockwise The projection angle is shown on the displ...

Страница 67: ...ur on either side must be checked After the button has been released the swivel arm system shall remain in the position set Vertical adjustment CAUTION Before vertical adjustment of the swivel arm system is performed be sure to remove the protective strips from the metal curtain see page 3 4 See Figure 1 1 Press buttons for upward and downward movement 3 of the swivel arm system The movement shall...

Страница 68: ...05 98 65 02 186 Checking the swivel arm system 14 3 Emergency stop See Figure 1 1 Press the emergency stop button 4 The button shall latch and all motorized movements of the equipment shall be blocked Er 824 shall appear To reset the emergency stop button turn it clock wise ...

Страница 69: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 14 4 Checking the swivel arm system This page intentionally left blank ...

Страница 70: ...ing and adjusting the field light time Checking the field light time Figure 1 Tube head 1 Switch on the field light by pressing switch 1 or by pressing the compression foot switch 2 The field light shall go out automatically after a preset period of time normally 20 sec Figure 2 Foot switch MAM00141 1 MAM00133 2 ...

Страница 71: ...adjusted according to the customer s desire within a certain range NOTE Shorter illumination time means increased life time of the lamp 1 Connect the service PC to the generator and start the program as described in section 21 2 Program according to the following Main menu 1 Select Stand configuration ENTER 2 Select Stand installation ENTER 3 Type in illumination time and save with F2 ...

Страница 72: ...ne 2 Check that the compression plate can not be removed without pressing the compres sion plate release button 2 3 Check the function of the knobs for manual compression decompression 3 4 Place a piece of soft material on the object table for example a rolled up towel or a piece of foam rubber 4 5 Check the function of the foot switch for motorized compression decompression 1 and 2 in Figure 2 Fi...

Страница 73: ...display at the lower part of the stand 1 in Figure 3 Figure 3 Display at the lower part of the stand NOTE The display 1 switches over to the actual compression force value when the compres sion plate comes in contact with the breast The compressed thickness is shown on the dis play 2 8 Press the foot switch for motorized compression to move the compression plate downwards while simultaneously pres...

Страница 74: ...the compression device and OPCOMP 16 3 Checking the OPCOMP Option See Figure 1 1 Decompress 2 Set the compression force to 20 kg by using the presetting knob 5 and compress The compression movement must be interrupted by OPCOMP before 20 kg is reached i e at 5 15 kg depending on the material 4 used ...

Страница 75: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 16 4 Checking the compression device and OPCOMP This page intentionally left blank ...

Страница 76: ...ions No film cassette inserted No object table installed No external diaphragm 1 used with an magnification table installed NOTE The cassette loaded switch must be set to ON with the service PC program Stand configuration Stand installation Cassette loaded check 1 function activated NOTE The film cassette must be exchanged after each exposure A second exposure before ex changing the cassette is no...

Страница 77: ...Siemens Elema AB SRX MK RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 17 2 Checking the exposure blocking This page intentionally left blank ...

Страница 78: ... must coincide with the radiation field Maximum tolerance Measuring procedure Figure 1 Checking the radiation field 1 Put film into the cassette 1 2 Insert cassette into the object table 2 3 Place filmbag 3 on the object table If no corresponding film bag is available you can place two film cassettes side by side on the object table 4 Place a lead cross 4 on the film bag cassettes 5 Switch on ligh...

Страница 79: ...letely exposed on the side facing the chest wall The maximum allowed over radiation is 6 5 mm 1 0 of SID No over radiation is allowed on the other three sides The maximum divergence between radiation field and light field of 13 mm 2 of SID must not be exceeded Correction see Service Instructions Repeat this check with all object tables 6 5 mm Max over radiation allowed Radiation field Overlap Max ...

Страница 80: ...Save data with F2 NOTE No write protection on the diskette Reading the exposure counter and deleting the error memory Read the exposure counter and delete the error memory after putting the stand into ser vice A Reading the exposure counter Main menu 1 Select Service ENTER 2 Select Show exposure counter ENTER 3 Enter the current counter reading in the certificate B Deleting the error memory Main m...

Страница 81: ...king the protective grounding resistance Using the protective ground wire tester measure the resistance between the protective ground terminal in the stand X899 see Section 5 and all metallic parts of the equipment which the patient operator may come in contact with incl all object tables The protective ground resistance must not exceed 0 1Ω Mounting the cable duct covers If it s not already done ...

Страница 82: ...eft and right front covers 8 to the stand and fasten with screws and contact washers 9 3 Fit left and right rear side covers 5 6 to the stand and fasten with screws and contact washers 7 4 Fit inner plastic strip 10 to the front and side covers and fasten with screws 11 eight on either side 5 Press on the outer plastic strip 12 When mounting the stand covers make sure that the screws at the top of...

Страница 83: ...e plastic film which shall be removed and discarded 1 Fit left right and middle front covers 6 to the stand and fasten with screws and contact washers 5 2 Fit the rear cover 3 to the stand and fasten it with screws 4 and contact washers 1 Be careful not to damage the cables at the cable outlet 3 Fit inner plastic strip 7 to the front and side covers and fasten with screws 8 eight on either side 4 ...

Страница 84: ...able outlet cover Figure 3 Cable outlet cover 1 Fit the cable outlet cover 1 to the stand and fasten with screws 2 and contact wash ers 3 Mounting the front cover onto the generator Figure 4 Mounting the front cover 1 Fit the front cover 3 to the generator and fasten it with the sixteen screws 2 MAM00130 2 1 3 MAM00131 3 1 2 ...

Страница 85: ...d the washers must be func tional This is necessary to establish protective ground connection 2 Press on the outer cover strip 1 Final protective grounding resistance test Using the protective ground wire tester measure the resistance between the mains grounding connection incl mains cable and any metallic part of the stand and generator which the patient operator may come in contact with The prot...

Страница 86: ...ch Danish Norwegian Finnish Greek and Swedish The warning labels are found in a plastic bag under thumb index 3 in the Technical Manual Note Warning label in english is provided on delivery Choose appropriate language and affix the label over the existing label on the control panel see Fig 5 Be sure to position the label properly before affixing it The label sticks immediately Figure 6 Warning lab...

Страница 87: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 19 8 Final procedures This page intentionally left blank ...

Страница 88: ...d or the fixing holes 2 of the generator Figure 1 Base plate for the stand Figure 2 Base plate for the generator 1 Position the stand generator and mark out appropriate fixing holes on the floor using the base plate as a template NOTE The base plates shall be secured with at least four screws each two on each side 2 Drill the holes and insert dowels and screws use Liebig safety dowel M6 S10 35 and...

Страница 89: ...Siemens Elema AB SPS UD RX B7 120 033 01 10 02 MAMMOMAT 300 Solna Sweden 05 98 65 02 186 20 2 Options This page intentionally left blank ...

Страница 90: ...ppears on the monitor screen This character indicates that at this point the space key must be pressed xx yy zz Data can be entered in place of x y z e g day s date Curved brackets indicate that out of several terms listed one below the other one must be selected Important remarks are indicated with this box When the password is entered only these characters are shown Menu Selection When several m...

Страница 91: ...asks for user name User name Enter the name of the technician for example NN and then press ENTER 5 The program asks for the password Password Enter the password and then press ENTER The display window shows Main menu 6 Select the program part to be used with keys and or then press ENTER The program part selected is shown with a background If necessary additional subroutines can be similarly selec...

Страница 92: ... in technical documentation Tube P49 Mo molybdenum anode 0 3 Calculated values Required values ______V x 5 kV V _____kV 30 kV 5 ______V x ____ s x 40 mA V ____ mAs 20 mAs 10 Date ______________ Sign ______________ Tube P49 Mo molybdenum anode 0 15 Calculated values Required values ______V x 5 kV V _____kV 30 kV 5 ______V x ____ s x 40 mA V ____ mAs 10 mAs 10 Date ______________ Sign ____________ ...

Страница 93: ...olybdenum anode 0 3 40 mm plexiglass Calculated values Required values ______V x 5 kV V _____kV 30 kV 5 ______V x 40 mA V ____ mA 125 mA 10 Date ______________ Sign ____________ Tube P49 Mo molybdenum anode 0 3 40 mm plexiglass Calculated values Required values ______V x 5 kV V _____kV 30 kV 5 ______V x 40 mA V ____ mA 125 mA 10 Date ______________ Sign ____________ ...

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