Dräger Medical Babytherm 8004 Guide

6132.300
9029684
Revision 5.0
Because you care
Technical Documentation
Babytherm® 8004/8010
Open Care Unit

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I
Contents
General
1Symbols and Definitions 3
2Notes 3
Function Description
1Babytherm 8004 7
1.1 Radiant warmer .................................................................................................................... 10
1.2 Control unit ........................................................................................................................... 11
1.2.1 ON/OFF switch ....................................................................................................... 13
1.2.2 Toroidal-core power transformer ............................................................................ 13
1.2.3 WT Power PCB ...................................................................................................... 13
1.2.4 WT Relay PCB ....................................................................................................... 17
1.2.5 WT Controller PCB ................................................................................................. 18
1.2.6 WT Sensor PCB ..................................................................................................... 20
1.3 Front ..................................................................................................................................... 22
1.3.1 WT LED 8004 PCB ................................................................................................ 23
1.3.2 Membrane keypad 8004 ......................................................................................... 23
1.3.3 Text display (LC display) ........................................................................................ 23
1.3.4 Loudspeaker ........................................................................................................... 24
1.3.5 WT Front PCB ........................................................................................................ 24

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Contents
2Babytherm 8010 27
2.1 Radiant warmer .................................................................................................................... 30
2.2 Control unit ...........................................................................................................................31
2.2.1 ON/OFF switch .......................................................................................................32
2.2.2 Toroidal-core power transformer .............................................................................33
2.2.3 WT Power PCB .......................................................................................................33
2.2.4 WT Relay PCB ........................................................................................................38
2.2.5 WT Controller PCB .................................................................................................39
2.2.6 WT Sensor PCB .....................................................................................................42
2.3 Front .....................................................................................................................................45
2.3.1 WT LED 8010 PCB .................................................................................................46
2.3.2 Membrane keypad 8010 .........................................................................................46
2.3.3 Text display (LC display) .........................................................................................46
2.3.4 Loudspeaker ...........................................................................................................46
2.3.5 WT Front PCB ........................................................................................................46
3Trolley 49
3.1 Electrical height adjustment (option) ....................................................................................49
3.2 Options .................................................................................................................................49
4Bed assembly 50
4.1 X-ray drawer .........................................................................................................................51
5Mattresses 51
5.1 Gel mattress .........................................................................................................................51
5.2 Foam mattress ......................................................................................................................52
6Pneumatic aspiration 52

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Contents
7Scales (Scale-Tronix) 52
7.1 Main PCB ............................................................................................................................. 52
7.1.1 Voltage selector ...................................................................................................... 53
7.1.2 Transformer ............................................................................................................ 53
7.1.3 Rectifier .................................................................................................................. 53
7.1.4 Voltage regulator .................................................................................................... 53
7.1.5 Microcontroller ........................................................................................................ 53
7.1.6 Quartz ..................................................................................................................... 53
7.1.7 Piezo loudspeaker .................................................................................................. 53
7.1.8 Reference voltage generation ................................................................................ 54
7.2 Display PCB ......................................................................................................................... 54
7.2.1 EEPROM ................................................................................................................ 55
7.2.2 Microcontroller ........................................................................................................ 55
7.2.3 LEDs ....................................................................................................................... 55
7.2.4 LEDs control ........................................................................................................... 55
7.2.5 7-segment displays ................................................................................................ 55
7.2.6 Quartz ..................................................................................................................... 55
7.2.7 +5 V voltage monitoring .......................................................................................... 55
7.3 Front Panel PCB .................................................................................................................. 55
7.4 Weighing cells ...................................................................................................................... 55
Maintenance Procedures
1Worklight 59
1.1 General information about the worklight ............................................................................... 59
1.2 Dismounting/replacing the worklight ..................................................................................... 59
2Nightlight 60
2.1 General information about the nightlight .............................................................................. 60
2.2 Dismounting/replacing the nightlight .................................................................................... 60

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Contents
3Phototherapy lamps (option) 61
3.1 General information about the phototherapy lamps ..............................................................61
3.2 Checking the phototherapy lamps ........................................................................................61
3.3 Dismounting/replacing the phototherapy lamps ....................................................................62
Annex
Parts catalog
Test List
Technical Information

1
General

2

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Babytherm 8004/8010 General
1 Symbols and Defini-
tions
2Notes This Technical Documentation conforms to the IEC 60601-1 standard.
Read each step in every procedure thoroughly before beginning any test.
Always use the proper tools and specified test equipment. If you deviate from
the instructions and/or recommendations in this Technical Documentation,
the equipment may operate improperly or unsafely, or the equipment could be
damaged.
It is our recommendation to use only Dräger parts and supplies.
The maintenance procedures described in this Technical Documentation may
be performed by qualified service personnel only. These maintenance proce-
dures do not replace inspections and servicing by the manufacturer.
The information in this Technical Documentation is confidential and may not
be disclosed to third parties without the prior written consent of the manufac-
turer.
This Technical Documentation is for the purpose of information only. Product
descriptions found in this Technical Documentation are in no way a substitute
for reading and studying the Instructions for Use/Operating Manual enclosed
with the product at the time of delivery.
WARNING
A WARNING statement provides important information about a poten-
tially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION
A CAUTION statement provides important information about a potentially
hazardous situation which, if not avoided, may result in minor or moderate
injury to the user or patient or in damage to the equipment or other prop-
erty.
NOTE
A NOTE provides additional information intended to avoid inconvenience
during operation.
Definitions according to German standard DIN 31051:
Inspection = examination of actual condition
Maintenance = measures to maintain specified condition
Repair = measures to restore specified condition
Servicing = inspection, maintenance, and repair

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46132.300
General Babytherm 8004/8010
Know-how contained in this Technical Documentation is subject to ongoing
change through research and development and Dräger Medical reserves the
right to make changes to this Technical Documentation without notice.
NOTE
Unless otherwise stated, reference is made to laws, regulations or stan-
dards (as amended) applicable in the Federal Republic of Germany for
equipment used or serviced in Germany. Users or technicians in all other
countries must verify compliance with local laws or applicable international
standards.

5
Function Description

6

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Babytherm 8004/8010 Function Description
1 Babytherm 8004 The Babytherm 8004 is an open care unit for warming premature babies,
neonates and infants with a body weight of up to 8 kg.
The Babytherm 8004 uses a radiant warmer which can be set to “manual
mode” or to “baby control mode” (skin-temperature control).
The Babytherm 8004 may be used in delivery rooms, obstetric units, neonatal
wards, pediatric wards and pediatric intensive care units.. The
Babytherm 8004 may be operated by doctors or by nursing staff under the
supervision of a doctor.
The Babytherm 8004 consists of the radiant warmer, the control unit, the bed
assembly and the wheeled frame.
WARNING
Risk of burns! Children who are in shock have a considerably lower
skin temperature than normal and would be overheated when using
the skin-temperature control mode. Do not use the skin-temperature
control mode in children who are in shock!
WARNING
Risk of hypothermia! Children who have a fever have a considerably
higher skin temperature than normal and would get hypothermia
when using the skin-temperature control mode. Do not use the skin-
temperature control mode in children who have a fever!
WARNING
Risk of incorrect measurements! When using the skin-temperature
sensor in “skin-temperature control” mode to measure rectal temper-
ature, the core temperature would be measured and controlled. Never
use the skin-temperature sensor to measure rectal temperature.

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Function Description Babytherm 8004/8010
Figure 1 Babytherm 8004 (front view)
Legend
1 Radiant warmer
2 Control unit
3 Bed assembly
4 Trolley without electrical height adjustment
Trolley with electrical height adjustment (option)

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Babytherm 8004/8010 Function Description
Figure 2 Block diagram of the Babytherm 8004
* The connection from the mains voltage terminal block to the height adjust-
ment does not exist in USA units

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Function Description Babytherm 8004/8010
1.1 Radiant warmer The radiant warmer emits a preset amount of heat. A multicore cable con-
nects the radiant warmer to the control unit.
The radiant warmer contains the following parts:
– Two infrared elements (total power 600 W)
– Energy-saving lamp (7 W)
– Energy-saving lamp (23 W)
– Central Alarm PCB
– Six halogen lamps (50 W) for phototherapy (option)
– Switched Mode Power Supply PCB for phototherapy (option)
Figure 3 Radiant warmer (bottom view)
Legend
1 Infrared element
2 Halogen lamps for phototherapy
3 Central Alarm PCB
4 Energy-saving lamp 1
5 Energy-saving lamp 2
6 Switched Mode Power Supply PCB for phototherapy (option)
NOTE
If the work light button is pressed, both energy-saving lamps (energy-sav-
ing lamp 1 and 2) come on. If the night light button is pressed, only energy-
saving lamp (1) comes on.

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Babytherm 8004/8010 Function Description
1.2 Control unit The control unit controls the functions of the Babytherm 8004.
Figure 4 Control unit of the Babytherm 8004 (front view)
Legend
1 Alarm LED (red alarm LED = Warning, yellow alarm LED = Caution)
2 15-minute alarm silence button
3 Check button (for checking LEDs, 7-segment displays, audible
alarm)
4 OK button
5 Operation indicators (green LED = ON, red LED = mains power fail-
ure)
6 Radiant warmer heat levels setting
7 Radiant warmer ON/OFF button
8 ”Skin/man.” button (toggles between manual mode and skin-tem-
perature control mode)
9 Phototherapy ON/OFF button (option)
10 Night light ON/OFF button (energy-saving lamp 1)
11 Work light ON/OFF button (energy-saving lamps 1 and 2)
12 Skin-temperature control target value setting

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Function Description Babytherm 8004/8010
Figure 5 Control unit of the Babytherm 8004 (rear view), cover plate
removed
Legend
The control unit contains the following assemblies:
– ON/OFF switch
– Toroidal-core power transformer
– WT Power PCB
– WT Relay PCB
– WT Controller PCB
– Front (WT LED 8004 PCB, membrane keypad 8004, text display,
WT Front PCB, loudspeaker)
1 WT Sensor PCB socket
2 Maximum of 3 connections for auxiliary equipment (workplace),
nurse call (connection for central alarm)
3 Connection for internal paging system, nurse call (connection for
central alarm)
4 RS 232 interface (modem), option
5 RS 232 interface (BabyLink), option
6 Control unit ON/OFF switch
7 Mains voltage selector
8 Fuses
9 Radiant warmer connection
10 Fuses
11 Mattress heater connection
12 Mains voltage supply connection

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Babytherm 8004/8010 Function Description
1.2.1 ON/OFF switch The ON/OFF switch is used to switch the mains voltage (single-pole) ON or
OFF.
1.2.2 Toroidal-core power
transformer
The toroidal-core power transformer supplies the electronic assembly and the
mattress heater with the following AC voltages:
– approx. 24 VAC
–approx.9VAC
1.2.3 WT Power PCB The WT Power PCB has the following function blocks:
– Bridge rectifier
– Voltage regulator (+5 VD)
– Voltage regulator (+5 V LED)
– GoldCap
– Charging circuit (GoldCap)
– Mains power failure detection (powerfail)
– Buzzer (mains power failure)
– Alarm LED control (mains power failure)
– Serial data transfer
– Multiplexer
– Addressing and controlling of actuators and safety relays

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Function Description Babytherm 8004/8010
Figure 6 Block diagram 1 of WT Power PCB