Compression system
MAMMOMAT Balance SPB7-115.840.01 Page 52 of 62 Siemens AG
Troubleshooting Guide Rev.02 10.04 Medical Solutions
Compression system
Introduction
The compression device of MAMMOMAT BALANCE consists of a drive motor MT3 with gear box
08883659 coupled to an electromagnetic clutch 08883634.
To access drive motor, remove tube cover.
To access electromagnetic clutch remove tube cover and c-arm front plate.
Compression force is adjusted by means of current flowing in the electromagnetic clutch that also has
safety function.
Drive motor has current sensing circuit for speed reduction when compression plate gets in contact
with the breast.
For function description refer to Operator’s manual SPB7-115.620.01…
Configuration of Maximum compression force
Maximum compression force of 150 N or 200 N is selected by means of
SW2
DIP3 = ON Max compression force 200N
Index number on the display will change accordingly to maximum force selected.
Calibration of Maximum compression force
Maximum compression force of 150 N or 200 N is calibrated by means of
SW1
DIP7 = ON Compression force calibration
Insert shifted compression plate 8383197, position a bathroom balance on the table and a soft
cushion between plate and balance as alternate method, spring balance can be used.
Compression force can be adjusted changing the correction factor from 1 to 20 that will appear on the
display in place of compression force.
Correction factor can be changed by means of mAs [+] [-] pushbuttons.
To the lowest correction factor corresponds the highest compression force and vice versa.
Motor current detector
For proper functionality of plate speed reduction, motor current detector is factory calibrated.
Motor or clutch replacement
If motor or clutch are replaced take care of correct alignment between clutch surfaces.
Correct alignment is essential for compression force constancy and reproducibility.
After replacement check and eventually calibrate compression force.
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