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Siemens-Elema AB
Disassembling and assembling
Servo
…
E382 E407E 061 01 01 02
4 - 2
4
General
Disassembling of the main units in the Servo
…
System
is described in this chapter. If not stated otherwise,
the assembling procedure is the reverse of the
described disassembling procedure.
The illustrations in the Servo
…
Spare Parts List are very
useful as a guide when disassembling and assembling
the Servo
…
System.
Preparations
Before disassembling or assembling the Servo
…
System:
• Set the On / Off switch on the control unit to
Off
.
• Disconnect the mains power cable.
• Disconnect the gas supplies (wall and/or tank).
• Disconnect Battery modules.
• Make sure that all gas conveying parts are
cleaned according to instructions in the
”Servo
…
– User's manual”.
After any service intervention in the Servo
…
System,
perform a ”Pre-use check” according to
instructions in the ”Servo
…
Ventilator System –
User's manual”.
Handling PC boards
The PC boards contain components that are highly
sensitive to static electricity.
Those who come into contact with circuit boards
containing sensitive components must take certain
precautions to avoid damaging the components (ESD
protection).
When working with ESD sensitive components,
always use a grounded wrist band and grounded
work surface. Adequate service tools must also be
used.
PC boards (spare parts) must always be kept in
protective packaging for sensitive electronic device.
PC boards must not be inserted or
removed while the mains power or
battery power is applied to the PC
boards.
Remove and insert the PC boards
very carefully to avoid damage to
the connectors.
Replacing PC boards
The Servo
…
system software is distributed on different
subsystems, located on the following PC boards:
• PC 1771 Control
• PC 1772 Monitoring
• PC 1771 Expiratory Channel
• PC 1777 Panel.
When delivered as spare parts, these PC boards are
equipped with the latest version of the system
software.
However, if during a service intervention, any of the
above PC boards need to be replaced, it is recom-
mended that the system software version used prior
to the PC board replacement is kept. Thus, a ”S/W
version update card” with the applicable system
software version must be available for re-installation
purposes.
Assembling guidelines
The Servo
…
System specifications allow unit operation
also during patient transportation. All parts of the User
Interface and the Patient Unit assembled with screws
and nuts are therefore tightened with a specified
torque and secured with threadlocking adhesives.
In order to maintain these specifications over time,
it must be ensured that after any service intervention
removed parts are re-assembled and secured
according to instructions. Make sure to follow the
guidelines stated below.
Tightening torque
• Thread size M3:
0.95 ±0.05 Nm
• Thread size M4–M6: 3.1 ±0.1 Nm.
Threadlocking adhesives
• Electrolube Bloc'Lube BLV15ML® on threads in
contact with PC boards.
• Loctite 243® on all other threads.
Note
: Threadlocking adhesive is not required on Heli-
Coil® screw thread inserts as these screw thread-
inserts have a self-locking function.
Содержание Servo i
Страница 1: ...Servo Service Manual E382 E407E 061 01 01 02 ...
Страница 2: ...Siemens Elema AB Important Servo E382 E407E 061 01 01 02 1 2 Notes ...
Страница 8: ...Siemens Elema AB Important Servo E382 E407E 061 01 01 02 1 8 Notes 1 ...
Страница 16: ...Siemens Elema AB Introduction Servo E382 E407E 061 01 01 02 2 8 2 Notes ...
Страница 44: ...Siemens Elema AB Service procedures Servo E382 E407E 061 01 01 02 5 10 5 Notes ...
Страница 64: ...Siemens ElemaAB Preventivemaintenance Servo E382 E407E 061 01 01 02 7 10 7 Notes ...
Страница 65: ...E382 E407E 061 01 01 02 Siemens Elema AB Servo Index 8 1 8 8 Index Alphabetic index 8 2 ...