Siemens Polymobil 3 Service instructions
POLYMOBIL III
Service Instructions
SP
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
grant or registration of a utility
model _or_ design,_are_ reserved.
English
Print No.: RXB8-115.061.02.01.02 Doc. Gen. Date: 10.95
Replaces: n.a.
0 - 2 Revision
Chapter Page Revision
all all 01
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.
POLYMOBIL III RXB8-115.061.02 Page 2 of 4 Siemens AG
Rev. 01 10.95 CS PS 24 Medical Solutions
Contents 0 - 3
Page
1 _______Prerequisites __________________________________________________ 1 - 1
Specially marked text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Documents required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Tools and measuring instruments required . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Safety notes and protective measures . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
Replacing damaged or missing screws . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 3
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 3
2 _______Test with the unit in the operative condition ________________________ 2 - 1
High-voltage test with the radiation detector . . . . . . . . . . . . . . . . . . . . . . 2 - 1
3 _______Error messages ________________________________________________ 3 - 1
There are three types of errors: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
4 _______Notes on trouble-shooting _______________________________________ 4 - 1
Checking the line voltage, fuses and LEDs . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
Checking the supply voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 6
Checking the intermediate circuit voltage . . . . . . . . . . . . . . . . . . . . . . . . 4 - 8
Checking the maximum main inverter frequency . . . . . . . . . . . . . . . . . . . . 4 - 9
Oscillating current measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 10
Checking the high-voltage kV
Checking the filament and tube current . . . . . . . . . . . . . . . . . . . . . . . . 4 - 13
Setting the maximum filament frequency . . . . . . . . . . . . . . . . . . . . . . . 4 - 15
Checking the tube current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 16
Checking the kV and tube current (IR) . . . . . . . . . . . . . . . . . . . . . . . . 4 - 17
Checking the mAs values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 18
Adjusting the mAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 19
Aligning the light field to the radiation field . . . . . . . . . . . . . . . . . . . . . . 4 - 20
Checking and readjusting the counterweight . . . . . . . . . . . . . . . . . . . . . 4 - 23
Readjusting the counterweight with accessories attached . . . . . . . . . . . . . . 4 - 23
Checking the control elements on the collimator . . . . . . . . . . . . . . . . . . . 4 - 24
NOM
and kV
. . . . . . . . . . . . . . . . . . . . . 4 - 12
ACT
5 _______Replacing important components _________________________________ 5 - 1
Replacing the single tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
Replacing the collimator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
Replacing the light-beam localizer lamp. . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
Replacing the caster. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 5
Siemens AG RXB8-115.061.02 Page 3 of 4 POLYMOBIL III
Medical Solutions Rev. 01 10.95 CS PS 24
0 - 4 Contents
Page
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POLYMOBIL III RXB8-115.061.02 Page 4 of 4 Siemens AG
Rev. 01 10.95 CS PS 24 Medical Solutions
Prerequisites 1
Specially marked text 1
1 - 1
WARNING
CAUTION
NOTE
All texts marked with "Warning" contain information regarding
potential hazards to health or life.
All texts marked "Caution!" contain information regarding potential hazards and steps to be taken to avoid hazards.
All texts marked "Note:" contain additional information regarding
the following procedure step. It is intended to clarify the step or to
indicate ways to avoid predictable problems.
Documents required 1
• Wiring diagram X038I
• Description of functions RXB8-115.041.02...
Tools and measuring instruments required 1
• Usual service tools
• Digital multimeter:
Fluke 8060 A 97 02 101 Y4290
• 2 channel storage oscilloscope:
Tektronik Type 2232 97 02 234 Y3155
• mAs meter 81 60 400 RE999
• Protective ground wire and leakage current
tester: BENDER safety tester 97 06 979 Y0526
• Radiation detector
See SPEED INFO 93/91
CAUTION
During oscilloscope operation the protective ground wire connection in the power cable must not be interrupted under any circumstances.
For measurements where ground loops that may be present could
impair the measuring result, use the TEK amplifier and the trigger
attachment.
96 60 754 RE999
Siemens AG RXB8-115.061.02 Page 1 of 4 POLYMOBIL III
Medical Solutions Rev. 01 10.95 CS PS 24
1 - 2 Prerequisites
Safety notes and protective measures 1
CAUTION
• When performing work and tests, the following must be
observed:
- the product-specific safety notes contained in the document,
- the safety notes RA0-000.012.40... in Register 2 of the
POLYMOBIL III file,
- and the general safety notes contained in Register 2 of the TI
binder.
• After the system has been switched off, a dc voltage of approx.
300 V is applied for the main inverter.
On D920 the yellow LED V35 lights up.
Within approx. 1.5 minutes the voltage drops to approx. 12 V;
LED V35 goes out.
• Checks and adjustments that must be carried out with radiation
switched on are marked with the symbol
When performing work procedures which are marked with this
symbol, radiation protective clothing must be worn.
• 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.
• Before removing or inserting PC boards, switch off the generator; in doing so, observe
the ESD regulations.
POLYMOBIL III RXB8-115.061.02 Page 2 of 4 Siemens AG
Rev. 01 10.95 CS PS 24 Medical Solutions
Prerequisites 1 - 3
Replacing damaged or missing screws 1
• Damaged or missing screws must only be replaced by steel screws as specified in the
installation drawings that conform to DIN 267 and have the specified tensile strength.
CAUTION
All Allen screws must have a tensile strength rating of 8.8.
Cleaning 1
• The unit must always be switched off or disconnected before cleaning.
• Use only water or a luke warm mixture of a household cleaner diluted with water to clean
the unit.
• Do not use an abrasive or organic solvents or cleaning agents containing solvents such
as gasoline used for cleaning purposes, alcohol or stain remover. 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
1 - 4 Prerequisites
POLYMOBIL III RXB8-115.061.02 Page 4 of 4 Siemens AG
Rev. 01 10.95 CS PS 24 Medical Solutions
Test with the unit in the operative condition 2
Fig. 1
2 - 1
High-voltage test with the radiation detector 2
NOTICE
• 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).
• Set an SID of 40 cm and collimate onto the radiation detector with the light localizer
(Fig.1).
• Trigger check exposures using the exposure data specified in the oscillograms (see
Fig.2).
The amplitude can be different for each detector.
Siemens AG RXB8-115.061.02 Page 1 of 2 POLYMOBIL III
Medical Solutions Rev. 01 10.95 CS PS 24
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
Error messages 3
There are three types of errors: 3
The following error codes are shown in the kV or mAs display on the control panel.
Initialization error
90... EPROM check sum error
3 - 1
95... IH
96... mA
97... kV
circuit error
nom
circuit error
nom
circuit error
nom
Stand-by error:
03... IH
04... IH
05... kV
06... mA
< IHstby
act
> IHstby
act
< > 0
act
< > 0
act
09... High pressure in the tank
Exposure error:
11... Inverter short circuit
12... kV
13... I
14... kV
15... mA
16... mA
max
max
act
act
act
< kVnom
< mAnom
> 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
3 - 2 Error messages
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POLYMOBIL III RXB8-115.061.02 Page 2 of 2 Siemens AG
Rev. 01 10.95 CS PS 24 Medical Solutions
Notes on trouble-shooting 4
In case of errors which impair radiography, perform the following checks.
Checking the line voltage, fuses and LEDs 4
a) Checking the line voltage
• Measure the supply voltage on site at the safety socket using the digital multimeter.
4 - 1
NOTICE
For voltages > 240 V AC see Startup Instructions
RXB8-115.034.02... chapter 3.
• Plug the power plug of the POLYMOBIL into the safety socket.
• POLYMOBIL ON
NOTICE
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
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