Siemens POLYMOBIL III Service Instructions Manual
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Siemens POLYMOBIL III Service Instructions Manual

Siemens POLYMOBIL III Service Instructions Manual

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POLYMOBIL III
Service Instructions
from Serial no. 3000
Print No.: RXB8-115.061.02.01.02
Replaces: n.a.
SP
© Siemens AG 1995
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: 10.95

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Summary of Contents for Siemens POLYMOBIL III

  • Page 1 POLYMOBIL III Service Instructions from Serial no. 3000 © Siemens AG 1995 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...
  • Page 2 Assemblers and other persons who are not employed by or otherwise directly affiliated with or autho- rized 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.

  • Page 3: Table Of Contents

    Replacing the caster........5 - 5 Siemens AG RXB8-115.061.02 Page 3 of 4 POLYMOBIL III Medical Solutions Rev. 01 10.95...
  • Page 4 0 - 4 Contents Page This page intentionally left blank. POLYMOBIL III RXB8-115.061.02 Page 4 of 4 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...

  • Page 5: Specially Marked Text

    For measurements where ground loops that may be present could impair the measuring result, use the TEK amplifier and the trigger attachment. Siemens AG RXB8-115.061.02 Page 1 of 4 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 6: Safety Notes And Protective Measures

    Connect the POLYMOBIL III only to a power source (power outlet) meeting the standards of VDE 0107 or the usual local standards. • Before working on the open POLYMOBIL III switch OFF the unit with the power switch at the control panele and unplug the power cable. •...

  • Page 7: Replacing Damaged Or Missing Screws

    Do not spray water on the unit. • For further information, refer to the Operating Instructions "Cleaning/Disinfecting". Siemens AG RXB8-115.061.02 Page 3 of 4 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 8 1 - 4 Prerequisites POLYMOBIL III RXB8-115.061.02 Page 4 of 4 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...

  • Page 9: High-Voltage Test With The Radiation Detector

    POLYMOBIL ON • Connect radiation detector to the oscilloscope and place it in the beam path of the POLYMOBIL III (see Fig. 1). • Set the slide switch on the radiation detector to measuring range 1 (1 point visible). •...
  • Page 10 2 - 2 Test with the unit in the operative condition POLYMOBIL III RXB8-115.061.02 Page 2 of 2 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...

  • Page 11: There Are Three Types Of Errors

    11... Inverter short circuit 12... 13... 14... < kVnom 15... < mAnom 16... > mAnom 17... maximum exposure time 18... exposure not completed Siemens AG RXB8-115.061.02 Page 1 of 2 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 12 3 - 2 Error messages This page intentionally left blank. POLYMOBIL III RXB8-115.061.02 Page 2 of 2 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...

  • Page 13: Checking The Line Voltage, Fuses And Leds

    If the POLYMOBIL cannot be switched on although the power plug and power voltage have been connected, the overcurrent circuit breaker F1 may have responded (automatic circuit breaker 1/Fig. 1) • POLYMOBIL OFF. Siemens AG RXB8-115.061.02 Page 1 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 14 - Loosen the hand screw and the protective ground wire terminal and take the switch box off the cassette compartment. - Check if the overcurrent circuit breaker F1 (1/Fig. 1) has responded and, if so, unlock it. Fuse value: 15 A POLYMOBIL III RXB8-115.061.02 Page 2 of 24 Siemens AG Rev.
  • Page 15 2 AT Closing circuit 0.25 AT T1 secondary 4 AT Filament circuit 3.2 AT 24 V / Main inverter control 10 AT Light-beam localizerr Siemens AG RXB8-115.061.02 Page 3 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 16 On D920 the following LEDs are illuminated: V40 (yellow) + 24 V V39 (yellow) filament V41 (yellow) I / 0 (ON/OFF) V35 (yellow) + 300 V intermediate circuit voltage POLYMOBIL III RXB8-115.061.02 Page 4 of 24 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...
  • Page 17 In addition, the following LEDs light up on D910: V15 (green) exposure V18 (green) V28 (yellow) radiation display Error message • V16 (red) lights up on D910. Siemens AG RXB8-115.061.02 Page 5 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 18: Checking The Supply Voltages

    C46 at +/ - on D920. Measured voltage ± in stand-by mode approx. 18.5 V Tolerance with preparation approx. 16.4 V Tolerance ± POLYMOBIL III RXB8-115.061.02 Page 6 of 24 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...
  • Page 19 0.5 V ± +15 V at X3.5 and X3.6 (0 V) Tolerance ± - 15 V at X3.7 and X3.6 (0 V) Tolerance Siemens AG RXB8-115.061.02 Page 7 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 20: Checking The Intermediate Circuit Voltage

    • Depending on the supply voltage, a value between 250... 350 V DC must be measured with the digital multimeter. Charging and discharging procedure relay relay POLYMOBIL III RXB8-115.061.02 Page 8 of 24 Siemens AG Rev. 01 10.95 CS PS 24...

  • Page 21: Checking The Maximum Main Inverter Frequency

    • Adjust the maximum main inverter frequency with potentiometer P2 to D910 (X028I-91E). • POLYMOBIL OFF • Connect jumper "S1" on D920 (solder). Siemens AG RXB8-115.061.02 Page 9 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 22: Oscillating Current Measurement

    Trigger exposure with default values 60 kV, 10 mAs. Main inverter ok • During the kV rise 50 A • After the kV rise 50 A POLYMOBIL III RXB8-115.061.02 Page 10 of 24 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...
  • Page 23 Notes on trouble-shooting 4 - 11 Error case Only one diagonal is fired. 50 A Siemens AG RXB8-115.061.02 Page 11 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 24: Checking The High-Voltage Kv Nom And Kv Act

    20 kV nominal value) and "kV" (1 V 10 kV actual value) and "GND" (X038I-6). • POLYMOBIL ON • Trigger an exposure with the default values 60 kV; 10 mAs. POLYMOBIL III RXB8-115.061.02 Page 12 of 24 Siemens AG Rev. 01 10.95...

  • Page 25: Checking The Filament And Tube Current

    After approx. 7 seconds the stand-by filament current comes on. • Trigger an exposure with the default values 60 kV, 10 mAs. POLYMOBIL ON Stand by filament circuit Nominal value output Siemens AG RXB8-115.061.02 Page 13 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 26 4 - 14 Notes on trouble-shooting Stand by filament current Exposure filament current POLYMOBIL III RXB8-115.061.02 Page 14 of 24 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...

  • Page 27: Setting The Maximum Filament Frequency

    Connect oscilloscope on D910 to MP "CAL" and "GND". • POLYMOBIL ON NOTICE Err 3 is displayed. • Using P3, set the maximum filament frequency on D910 (100 kHz 10 µs) Siemens AG RXB8-115.061.02 Page 15 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 28: Checking The Tube Current

    • Connect oscilloscope on D910 to MP "IRS" (NOMINAL), "IR" (ACTUAL) and "GND". • POLYMOBIL ON • Trigger an exposure with the default values 60 kV, 10 mAs. POLYMOBIL III RXB8-115.061.02 Page 16 of 24 Siemens AG Rev. 01 10.95...

  • Page 29: Checking The Kv And Tube Current (Ir)

    Trigger exposure with the default values 60 kV, 10 mAs. Prolonged transient response NOTICE The transient response of the tube current can be set with P1 on D910. Siemens AG RXB8-115.061.02 Page 17 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 30: Checking The Mas Values

    1,0 ... 1,3 mAs • Remove the mAs meter and reinsert the jumper in the single tank at ”mA+ / mA - ” . • Reinstall the lid of the single tank. POLYMOBIL III RXB8-115.061.02 Page 18 of 24 Siemens AG Rev. 01 10.95...

  • Page 31: Adjusting The Mas

    POLYMOBIL ON NOTICE Err 6 is displayed. 3.2 kHz 16 kHz 62.5 µs • Adjustment with potentiometer P7 on D910 (adjust to 16 kHz) Siemens AG RXB8-115.061.02 Page 19 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 32: Aligning The Light Field To The Radiation Field

    Trigger an exposure (60 kV, 10mAs) and develop the film. • Using a waterproof felt pen, write the following data on the developed film. - Set SID - Film size - Radiation field size POLYMOBIL III RXB8-115.061.02 Page 20 of 24 Siemens AG Rev. 01 10.95...
  • Page 33 Determine the total deviations in the X and Y direction (ignore the +/- signs). • Σ Σ Both the length deviation ( Y) and the width deviation ( X) must be less than 1.6 cm. Siemens AG RXB8-115.061.02 Page 21 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 34 • Repeat the check and, if necessary, adjust the collimator again until the deviation between the light field and the radiation field is within the admissible tolerance (< 1,6 cm). POLYMOBIL III RXB8-115.061.02 Page 22 of 24 Siemens AG Rev. 01 10.95...

  • Page 35: Checking And Readjusting The Counterweight

    Adjust the spring tension so that the support arm is balanced in the horizontal position, i.e. the forces needed for lifting and lowering the tube unit are equal. Siemens AG RXB8-115.061.02 Page 23 of 24 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 36: Checking The Control Elements On The Collimator

    ± Check if the double-slot diaphragm can be rotated 45°. • Check that format adjustment (blades) is easy and smooth by turning the collimator adjustment knobs (8/Fig. 9). POLYMOBIL III RXB8-115.061.02 Page 24 of 24 Siemens AG Rev. 01 10.95...

  • Page 37: Replacing The Single Tank

    Install the new single tank in the reverse order. • Check alignment of light field to radiation field and adjust if necessary. (see "Aligning the light field to the radiation field"). Siemens AG RXB8-115.061.02 Page 1 of 6 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...

  • Page 38: Replacing The Collimator

    Connect the connecting cables and screw down the rear panel. • Check agreement of light and radiation field and make adjustment if required (see “Agreement of light and radiation field”). POLYMOBIL III RXB8-115.061.02 Page 2 of 6 Siemens AG Rev. 01 10.95...

  • Page 39: Replacing The Light-Beam Localizer Lamp

    Do not touch the glass envelope with your bare fingers. • Screw down the bracket and the front panel. • Adjust both knobs and fasten them. Siemens AG RXB8-115.061.02 Page 3 of 6 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 40 The light-beam localizer lamp voltage can be adjusted at resis- tance R6 (12/Fig. 6). ± The voltage at the lamp should be 11.5 V 0.2 V. • Check function of the light-beam localizer lamp. POLYMOBIL III RXB8-115.061.02 Page 4 of 6 Siemens AG Rev. 01 10.95 CS PS 24...

  • Page 41: Replacing The Caster

    Install the new caster in the reverse order. • Check pedal positions (see operating instructions) TD RX 6/ Friedrich TD RX 1 / Kern R. TDU 3 / Hay Siemens AG RXB8-115.061.02 Page 5 of 6 POLYMOBIL III Medical Solutions Rev. 01 10.95 CS PS 24...
  • Page 42 5 - 6 Replacing important components POLYMOBIL III RXB8-115.061.02 Page 6 of 6 Siemens AG Rev. 01 10.95 CS PS 24 Medical Solutions...

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