Page 1
Babytherm 8004/8010
Technical
Documentation
D
COMCOM
Page 2
Copyright by Dräger Medical AG & Co. KGaA, Lübeck, Federal Republic of Germany
Copying is prohibited for commercial purposes.
No replacement in event of modification.
Attention is to be paid to the Operating Manual.
This technical documentation does not replace the Operating Manual.
The warranty and liability conditions of the general terms and conditions for business transactions of DrägerMedical AG & Co. KGaA are not extended by this technical documentation.
Safety Regulations:
Reference is hereby made to the observance of the relevant safety provisions, such as the
Medical Equipment Ordinance (Medizingeräteverordnung), the Pressure Container Ordinance (Druckbehälterverordnung), the Technical Rules for Pressurised Gases (Technische
Regeln Druckgase) or the Occupational Health and Safety Provisions (Unfallverhütungsvorschriften).
Insofar as reference is made to laws, regulations or standards, these are based on the legal
system of the Federal Republic of Germany.
Follow your local laws and regulations.
Page 3
Contents
General
1 Symbols and Definitions 5
Functional Description
1 Babytherm 8004 7
1.1 Radiant Heater .............................................................................................................. 10
1.2 Control Unit ....................................................................................................................12
1.3 Panel ............................................................................................................................... 30
2 Babytherm 8010 37
2.1 Radiant Heater ...............................................................................................................41
2.2 Control Unit ...................................................................................................................43
2.3 Panel ............................................................................................................................... 63
3 Trolley 70
3.1 Electric Height Adjustment (Optional) ..................................................................... 70
3.2 Options (for Retrofitting) ............................................................................................. 70
4 Resting Surface 71
4.1 X-ray drawer (Babytherm 8004) ................................................................................ 73
5 Mattress 74
5.1 Gel Mattress ...................................................................................................................74
6 Pneumatics (Suction) 75
For internal use only. Copyright reserved.
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Contents
Test List
1 Tes t Eq uipment 77
2 Accompanying Documents (applies only to Germany) 77
3 General Condition 77
3.1 Trolley without Electrical Height Adjustment .......................................................... 77
3.2 Trolley with Electrical Height Adjustment (optional) ............................................. 77
3.3 Control Unit ...................................................................................................................78
3.4 Radiant Heater .............................................................................................................. 78
3.5 Resting Surface ............................................................................................................ 78
3.6 Base Plate ...................................................................................................................... 79
3.7 Foam Mattress (Babytherm 8004) ............................................................................ 79
3.8 Gel Mattress (Babytherm 8010) ................................................................................ 79
3.9 Swivel Cabinet (optional) ............................................................................................ 79
3.10 Hook Rail (optional) ..................................................................................................... 79
3.11 Side Handle on Resting Surface (optional) ............................................................ 79
3.12 Hood (optional) ............................................................................................................. 79
4 Tests as per VDE 0751 Part 1 (follow to local legislation, standards and
regulations) 80
4.1 Checking the Protective Conductor Resistance ................................................... 80
4.2 Checking the Equivalent Leakage Current ..............................................................81
4.3 Checking the Patient Leakage Current ................................................................... 82
5 Functional Tests 83
5.1 Checking the LEDs, the LED Strip and the Buzzer in the Control Unit as well as
Central Alarm Lamp in the Radiant Heater ............................................................. 83
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Contents
6 Place fully functional unit at customer’s disposal. 85
7 Tested 85
Replacing Non-repairable Items
1 Work Light 86
1.1 General Information about the Work Light ............................................................. 86
1.2 Dismounting/Replacing the Work Light .................................................................. 86
2 Night Light 88
2.1 General Information about the Night Light ............................................................. 88
2.2 Dismounting/Replacing the Night Light .................................................................. 88
3 Phototherapy (Option) 90
3.1 General Information about the Phototherapy Lamps ........................................... 90
3.2 Checking the Phototherapy Lamps .......................................................................... 90
3.3 Dismounting/Replacing the Phototherapy Lamps .................................................91
Changes
1 Type of Change 95
Appendix
1 Abbreviations 96
2 Spare parts list 97
For internal use only. Copyright reserved.
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General
This Service Manual conforms to the International Standard IEC 60601-1.
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 Service Manual, the equipment may operate improperly or unsafely,
or the equipment could be damaged.
Use only original Dräger parts and supplies.
The maintenance procedures described in this Service Manual may be performed by
qualified service personnel only. These maintenance procedures do not replace inspections
and servicing by Dräger Medical AG & Co. KGaA.
Strictly follow the Instructions for Use.
This Service Manual does not replace the Instructions for Use. Any use
of the product requires full understanding and strict observation of the
product-specific Instructions for Use.
Unless otherwise stated, reference is made to laws, regulations or
standards (as amended) applicable in the Federal Republic of Germany.
1 Symbols and Definitions
− A dash (−) is used to identify items on a list.
− A bullet (•) is used to identify a sentence that contains direct work instructions.
This symbol is used to provide important information that, if ignored, could
lead directly to a patient’s or operator’s injury. It is also used to provide
important information that, if ignored, could lead directly to equipment
damage and, indirectly, to a patient’s injury.
For internal use only. Copyright reserved.
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This symbol is used to provide additional information, operating tips, or
maintenance suggestions.
Definitions according to German standard DIN 31051:
Inspection = examination of actual condition
Servicing = measures to maintain specified condition
Repair = measures to restore specified condition
Maintenance = inspection, servicing, and repair
For internal use only. Copyright reserved.
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Functional Description
1 Babytherm 8004
The Babytherm 8004 is an open incubator for keeping premature babies and infants with a
body weight of up to 8 kg warm.
The Babytherm 8004 provides warmth by a radiant heater in “manual mode “ with automatic
“skin temperature control”.
The Babytherm 8004 is used in the delivery room, the neonatal ward, the children’s ward and
the children’s intensive care unit. The Babytherm 8004 is operated by a doctor, or by nurses
or orderlies under the supervision of a doctor.
Danger of burns! Infants who are in shock have a markedly lower than
normal skin temperature, and would be overexposed if skin temperature
regulation were used. Do not use skin temperature regulation for
infants who are in shock!
Danger of hypothermia! Infants who have a fever have a markedly higher
than normal skin temperature, and would experience hypothermia if skin
temperature regulation were used. Do not use skin temperature
regulation for infants who have a fever!
Incorrect measurements! If the skin temperature sensor is used rectally
in the skin temperature regulation operating mode, the core temperature
is measured and regulated. Do not use the skin temperature sensor
rectally!
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The Babytherm 8004 includes a radiant heater, a control unit, a resting surface and a trolley.
1
2
3
4
Fig. 1: Front view of the Babytherm 8004
Legend
Table 1:
1 Radiant heater
2 Control unit
D
COMCOM
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3 Resting surface
4 Trolley without electric height adjustment
Trolley with electric height adjustment (optional)
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Control Unit
Radiant Heater
(work light/night-light, infrared rods, Central
Alarm PCB, phototherapy unit (optional))
ON/OFF Switch
WT Controller PCB
Measurement
Circuits
(Microcontroller)
Panel
(text display,
8004 keypad,
8004 WT LED PCB,
WT Front PCB)
WT Relay PCB
(drive, actuators,
voltage selector
switch)
WT Power PCB
(voltage regulator, horn)
Resting Surface
WT Sensor PCB
(measuring circuitskin temperature
Transformer
Mains Connection
Skin
Temp. sensors
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Scale (optional)
Medibus (optional)
Trolley
Personnel Alert (optional)
Height Adjustment
Modem Connection (optional)
Height-adjustment
power plug USA
version only
Mains Voltage Terminal Box
Fig. 2: Block diagram of the Babytherm 8004
* The connection between the mains voltage terminal box and the height-adjustment is not
available in the USA version.
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1.1 Radiant Heater
The radiant heater emits a pre-set amount of heat. A multi-conductor cable connects the
radiant heater to the control unit.
The radiant heater contains the following subassemblies:
− Two infrared rods (600 W overall power)
− Energy-saving lamp (7 W)
− Energy-saving lamp (23 W)
− Central Alarm PCB
− Six halogen lamps (50 W) for phototherapy unit (optional)
− Switched-Mode Power Supply PCB for phototherapy unit (optional).
2
1
1
6
3
5
2
4
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Fig. 3: bottom view of radiant heater
Legend
Table 2:
1 Infrared rod
2 Halogen lamps for phototherapy unit (optional)
3 Central Alarm PCB
4 Energy-saving lamp no. 1
5 Energy-saving lamp no. 2
6 Switched-Mode Power Supply PCB for phototherapy unit (optional)
When the button for the work light is pressed, both energy-saving lamps
(energy-saving lamp no. 1 and energy-saving lamp no. 2) are switched on.
When the night-light button is pressed, only energy-saving lamp no. 1 is
switched on.
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1.2 Control Unit
The control unit controls and regulates the functions of the Babytherm 8004.
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D
Babytherm 8004
1
10
5
1
OK
7
8
6
12
°C
Haut °C manuell
Haut
man.
9
1011
Fig. 4: Front view of the control unit of Babytherm 8004
Legend
Table 3:
1 Alarm LED
(red alarm LED = warning, yellow alarm LED = caution)
2 Reset key (silence key) (15 minute alarm/10 minute alarm)
k
Inop.
2
3
4
5
3 Check key (test LEDs and audible alarm)
4 OK key
5 LEDs (green LED = operating mode, red LED = powerfail)
6 Heat level adjustment for radiant heater
7 Radiant heater ON/OFF switch
8 Skin/manual key (selector switch: manual power adjustment/skin temperature
regulation)
9 Phototherapy unit ON/OFF switch (optional)
10 Night-light ON/OFF switch (energy-saving lamp no. 1)
11 Work light ON/OFF switch (energy-saving lamp no. 1 and energy-saving lamp no. 2)
12 Skin temperature regulation target value adjustment
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12
11
Sensor
10
9
1
2
3
4
8
5
7
6
Fig. 5: Rear view of the control unit 8004
Legend
Table 4:
1 Connection for WT Sensor PCB
2 Connections for personnel alert; max. 3 devices of workplace (connections for
central alarm)
3 Connection for public address system, personnel alert (connection for central alarm)
4 RS 232 interface (modem), optional
5 RS 232 interface (BabyLink), optional
6 Control unit ON/OFF switch
7 Voltage Selector Switch
8 Fuses
9 Connection for radiant heater
10 Fuses
11 Connection for mattress heater
12 Connection for mains power supply
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The control unit consists of the following subassemblies:
− ON/OFF switch
− Toroidal-core power transformer
− WT Power PCB
− WT Relay PCB
− WT Controller PCB
− Panel (8004 WT LED PCB, 8004 keypad, text display, WT Front PCB, loudspeaker).
1.2.1 ON/OFF Switch
The single pole ON/OFF switch switches the mains voltage on or off.
1.2.2 Toroidal-Co re Power Transfo rm er
The toroidal-core power transformer supplies the electronics and the mattress heater with the
following alternating voltages:
− approximately 24 VAC
− approximately 9 VAC.
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1.2.3 WT Power PCB
The WT Power PCB consists of the following functional modules:
− Bridge rectifier
− Voltage regulator (+5 VD)
− Voltage regulator (+5 VLED)
− GoldCap
− Charging circuit (GoldCap)
− Mains voltage power failure recognition
− Horn (mains voltage failure)
− Alarm LED drive (mains voltage failure)
− Serial data transmission
− Multiplexer
− Addressing and drive for actuators and safety relays.
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Transforme r
9 VAC
Bridge
Rectifier
Voltage
Regulator
+5 VD
Operating Voltage
WT Sensor PCB
Voltage
Regulator
1
Monoflop
Serial Data Transmission
Overtemperature *
+5 VLED
WT Panel PCB
Mains Failure
Recognition
WT
Controller PCB
WT Controller PCB
* Component is not active
Drive/Request for
Mattress Heater *
* Component is not active
Fig. 6: Block diagram 1 of WT Power PCB
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AKKU
+5 VD
VCGX
ON/OFF
Switch Auxiliary
Contact
Horn
Test
GoldCap
Horn Drive
WT Controller PCB
RESETQX
LED+
W T Con trol ler P CB/ 8 004
Membrane Keypad
Addressing and Drive for
Actuators/Relays
Multiplexer
+5 VLED
VGCX
GCAPVOLT
Fig. 7: Block diagram 2 of WT PCB Power Supply
WT Relay PCB
ANASEL
Analog
WT Controller PCB
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Bridge Rectifier
The toroidal-core power transformer applies approximately 10 VAC to the bridge rectifier
input from which an uncontrolled direct voltage of approximately 9 VDC is generated.
Voltage Regulator (+5 VD)
The controlled operating voltage +5 VD is generated from the uncontrolled 9 V direct voltage
by a voltage regulator.
Voltage Regulator (+5 VLED)
The controlled operating voltage +5 VLED is generated from the uncontrolled 9 V direct
voltage by a voltage regulator.
GoldCap
The GoldCap supplies the horn and the mains failure LED with operating voltage in the event
of mains voltage failure. The GoldCap voltage accumulator also buffers microcontroller RAM.
Charging Circuit (GoldCap)
The internal + 5VD operating voltage charges via a resistor-diode circuit the GoldCap. The
charging circuit is switched off once per second for testing purposes.
Mains Voltage Power Failure Recognition
A monoflop recognises a failure of the mains voltage supply.
Horn (Mains Voltage Failure)
A GoldCap provides for horn operating voltage in the event of a mains voltage failure.
Alarm LED Drive (Mains Voltage Failure)
A GoldCap provides for alarm LED operating voltage in the event of a mains voltage failure.
Serial Data Transmission
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A driver module amplifies serial measurement data of the skin temperature, test signals and
control signals.
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Multiplexer
The multiplexer switches the voltages (GCAPVOLT, +5 VLED) to the WT Controller PCB for
testing.
Addressing and Drive for Actuators and Relays
An addressing module, a shift register and an amplification module call up the actuators and
the safety relay for the radiant heater.
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1.2.4 W T Relay PCB
The energy-saving lamps, the infrared rods, the Central Alarm PCB and the radiant heater
phototherapy unit (optional) are driven by relays located on the WT Relay PCB. A triac
controls the infrared rods.
The WT Relay PCB contain the following subassemblies:
− Voltage selector switch
− Infrared rods drive/feedback
− Infrared rod safety relay
− Relays (energy-saving lamps, phototherapy unit (optional))
− Drive for Central Alarm PCB.
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WT Relay PCB
Voltage
Selector Switch
Relay
Feedback
Semiconduct
or Relay
from/to WT Power PCB
LEDs
Driver/Amplifier
Alarm
Relay
Safety
Relay
Relay
Opto Triac
Feedback
Circuit
F 4
F 3
ON/OFF
Switch
F 5
F 1
Transforme r
Mains Voltage
Radiant Heater
Central Alarm PCB
Energy-Saving Lamp
Energy-Saving Lamp
Infrared Rods
Phototherapy Unit
(optional)
Switched-Mode
Power Supply
PCB
F6132300T01.fm 19.05.00
Fig. 8: Block Diagram of WT Relay PCB
Voltage Selector Switch
The voltage selector switch allows for adapting the primary circuit of the toroidal-core power
transformer to the local mains voltage.
Radiant Heater Drive/Feedback
An optocoupler drives the triac, which supplies the infrared rods with mains voltage. The
voltage of the infrared rods generates an acknowledgement signal with an optocoupler.
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Infrared Rod Safety Relay
The safety relay interrupts mains voltage to the infrared rods in the event of an error (e.g.
“Inop”).
Relays (Energy-Saving Lamps, Phototherapy Unit (optional))
The relays supply the energy-saving lamps and the phototherapy unit (optional) with mains
voltage.
Drive for Central Alarm PCB
An opto triac at the WT Relay PCB drives the central alarm lamp. The opto triac supplies the
Central Alarm PCB with mains voltage.
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1.2.5 WT Controller PCB
The WT Controller PCB contains the following subassemblies:
− Microcontroller
− Quartz element
− EPROM
− EEPROM
− RAM
− Watchdogs
− Driver elements
− Multiplexer and A-D converter.
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Fig. 9: Block Diagram of WT Controller PCB
WT
Power PCB
WT
Power PCB
WT
Power PCB
Analog
Overtemperature
AKKU
A-D
Converter
CPU
Quartz
Element
RAM
RESET
EPROM
EEPROM
Watchdog 1
Watchdog 2
WT Power PCB
(safety relay)
1
WT Power PCB
1
1
1
Alarm
(horn)
WT Front PCB
(inop LED)
WT Power PCB
(drive/measurement
data/
addressing/test signals)
Tex t Displ ay, LE Ds
WT Front PCB
WT Relay PCB
WT Power PCB/
WT Front PCB
8004 keypad,
7-Segment Display,
Page 27
Microcontroller
The microcontroller controls and monitors the Babytherm program. The microcontroller
contains 2 KB RAM. Target values are stored and buffered in this RAM. An accumulator RAM
buffer voltage is generated by the GoldCap.
Quartz Element
The quartz element generates a pulse frequency of approximately 32 MHz. The
microcontroller generates a frequency of 16 MHz with this pulse frequency.
EPROM
The EPROM contains the Babytherm software program.
EEPROM
The EEPROM stores device configuration data.
RAM
The RAM is the main memory.
Watchdogs
The watchdogs monitor the software program sequence of the microcontroller. The
watchdogs are counting elements, which are timed with a separate quartz element.
If the microcontroller does not reset the counting elements, an EMERGENCY STOP signal is
generated.
Driver Elements
The driver elements amplify the signals and adjust their levels for the actuator driver.
Multiplexer and A-D Converter
The A-D Converter conver ts the +5 VLED voltage and the GoldCap voltage into a digital data
word. This data word is sent to the microcontroller for the purpose of evaluation.
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1.2.6 WT Sensor PCB
The WT Sensor PCB includes the following subassemblies:
− Receiver and sender for serial data transmission
− Test signal select logic
− Measurements amplifiers of skin temperature
− Test circuit (36.0 °C - skin temperature)
− A-D conversion with multiplexer.
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WT Sensor PCB
+5 V
Reference
Voltage
–
+
Uref
Uref
Uref
Selection
Skin Sensor
Sensor1
NTC1
Sensor2
NTC2
S1
36°C
S2
36°C
Hybrid
Hybrid
Multiplexer
A-D
Converter
DC/DC
Converter
Optocoupler
Optocoupler
+5 VISO
WT Power PCB
+5VISO
WT Power PCB
Select
Logic and
Shift
Register
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Test Signals
Fig. 10: Block diagram of WT Sensor PCB
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Receiver and Sender for Serial Data Transmission
Optocouplers transmit the serial measurement data of skin temperature and the
WT Sensor PCB operating voltage to the WT Power PCB. One optocoupler receives the
test signals in serial mode for the measurement circuits.
Test Signal Select Logic
An addressing module and a shift register convert the serial test signals into parallel data.
The test signals activate the skin temperature 36 °C test circuit.
Measurement Amplifier of the Skin Temperature
Two skin temperature hybrids measure the skin temperature.
Test Circuit (36.0 °C - Skin Temperature)
The software monitors the skin temperature hybrid.
Reference resistors, which are linked to the test circuits, are connected to the inputs of the
skin temperature hybrids. The output voltage values of the skin temperature hybrids
correspond to a temperature of 36.0 °C.
A-D Conversion with Multiplexer
The multiplexer sends an analog measurement signal of skin temperature to the integrated AD converter. The serial output signal from the A-D converter is connected to an optocoupler.
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1.3 Panel
The panel consists of the following subassemblies:
− 8004 WT LED PCB
− 8004 keypad
− Tex t display
− WT Front PCB
− Loudspeaker.
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Fig. 11: Block diagram of the Panel
WT Power PCB
WT Controller PCB
Panel
WT Front PCB
Address Coding/
Chip Select
Mains Failure LED
Inop LED
Contrast
Tex t Display
Latch
8004
WT PCB LED
7-Segment
Displays/
Feed-LED
Display/Keypad
Controller
8004 keypad
Keys
Shift
Register
LEDs
(inop/
mains failure)
Volume Control/
Sound Chip
Delay
Interfaces
Level
Shifter
Opto
coupler
Level
Shifter
External Alarm
Modem/Medibus
Serial Scale
Personnel Alert
Clock
(optional)
(optional)
Page 33
1.3.1 8004 WT LED PCB
The 8004 WT LED PCB contains 7-segment displays to represent the skin temperature and
a light emitting diode for display the feed symbol.
1.3.2 8004 Keypad
The 8004 keypad includes a key array, keys and LEDs.
1.3.3 Text Display (LC display)
The text display shows clear text messages (comments, warnings, alarms and commands).
1.3.4 Loudspeaker
Acoustic alarms are generated at the loudspeaker for alarms and comments. A volume
control and a sound chip control the loudspeaker.
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1.3.5 WT Front PCB
A port component reads in the key array. LED drive is accomplished with decoders, shift
registers and multiplex signals.
The WT Front PCB contains the following subassemblies:
− Address coding and chip select
− Sound chip with volume regulator
− Text display contrast adjustment
− Text display latch drive
− Voltage supply for text display backlighting
− Personnel alert
− Interface modules
− Level shifters
− Optocouplers
− Display module
− LED matrix drive.
F6132300T01.fm 19.05.00
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Fig. 12: Block Diagram of the WT Front PCB
WT Power PCB
WT Controller PCB
WT Front PCB
Address Coding/
Chip Select
Mains Failure LED
Inop LED
Contrast
Latch
Display/Keypad
Controller
Shift
Register
Volume Control/
Sound Chip
Delay
Interfaces
Level
Shifter
Opto
coupler
Level
Shifter
Tex t Displ ay
(7-segment Displays/
Feed symbol LED)
8004 WT LED PCB
Keys
LEDs
Modem/Medibus
Serial Scale
Loudspeaker
External Alarm
Personnel Alert
Clock
(optional)
(optional)
Page 36
Address Coding and Chip Select
Addressing and selection modules select the various hardware components.
Sound Chip with Volume Regulator
The microcontroller links the output signal of the sound chip to the output signal of the
volume regulator. The combined signal is amplified and fed to the loudspeaker.
The microcontroller can influence the volume of the volume regulator via software.
Text Display Contrast Adjustment
An amplifier module enables contrast adjustment at the text display.
Text Display Latch Drive
Latch modules drive the text display signal.
Voltage Supply for Text Display Illumination
A switching controller supplies the text display backlighting foil with a voltage of
approximately 1.0 V to 5.0 V.
Personnel Alert
In the event of an alarm a relay is activated. The relay functions as a selector switch. An
external alarm system can be connected to the selector switch (e.g. personnel alert).
An alarm delay prevents the personnel alert from being immediately activated after the Check
key has been actuated.
Interface Modules
The interface modules link the data bus to the peripheral units (medibus, modem, scale).
Level Shifters
The level shifters adapt the WT Front PCB interface to the peripheral devices interfaces.
F6132300T01.fm 19.05.00
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Optocouplers
Optocouplers isolate the modem, the medibus and the central alarm from the
WT Front PCB.
Display Module
The display module provides the 7-segment display with operating voltage. The display
module selects the individual keys. The display module stores the actuated key in an storage
area, and sends this as information to the data bus.
LED Matrix Drive
A shift register and select logic drive the LED matrix.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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2 Babytherm 8010
The Babytherm 8010 is an open incubator for keeping premature babies and infants with a
body weight of up to 8 kg warm.
The Babytherm 8010 provides warmth by a radiant heater in “manual mode “ with automatic
“skin temperature control”. It also has a heated gel mattress.
The Babytherm 8010 is used in the delivery room, the neonatal ward, the children’s ward and
the children’s intensive care unit. The Babytherm 8010 is operated by a doctor, or by nurses
or orderlies under the supervision of a doctor.
Danger of burns! Infants who are in shock have a markedly lower than
normal skin temperature, and would be overexposed if skin temperature
regulation were used. Do not use skin temperature regulation for
infants who are in shock!
Danger of hypothermia! Infants who have a fever have a markedly higher
than normal skin temperature, and would experience hypothermia if skin
temperature regulation were used. Do not use skin temperature
regulation for infants who have a fever!
Incorrect measurements! If the skin temperature sensor is used rectally
in the skin temperature regulation operating mode, the core temperature
is measured and regulated. Do not use the skin temperature sensor
rectally!
F6132300T01.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Functional Description Page 37
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The Babytherm 8010 includes a radiant heater, a control unit, a resting surface and a trolley.
F6132300T01.fm 19.05.00
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1
2
3
4
Fig. 13: Front view of the Babytherm 8010
Legend
Table 5:
1 Radiant heater
2 Control unit
D Babytherm
F6132300T01.fm 19.05.00
3 Resting surface
4 Trolley without electric height adjustment
Trolley with electric height adjustment (optional)
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 39
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Control Unit
Radiant Heater
(work light/night-light, infrared rods, Central
Alarm PCB, phototherapy unit (optional))
ON/OFF Switch
WT Controller PCB
Measurement
Circuits
(Microcontroller)
Panel
(text display,
8010 keypad,
8010 WT LED PCB,
WT Front PCB)
Medibus (optional)
Personnel Alert (optional)
Modem Connection (optional)
Scale (optional)
WT Relay PCB
(drive, actuators,
voltage selector
switch)
Transformer
WT Power PCB
(voltage regulator, horn)
Resting Surface
WT Sensor PCB
(measuring circuit:
skin temperature /
mattress heater)
Mattress Heater
(heating plate with
sensors and heat film)
Trolley
Height Adjustment
Mains Voltage Terminal Box
Heat Film
Overtemperature
Mains Connection
Skin
Temp. sensors
Height-adjustment
power plug USA
version only
F6132300T01.fm 19.05.00
Fig. 14: Block diagram of the Babytherm 8010
* The connection between the mains voltage terminal box and the height adjustment is not
available in the USA version.
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 40
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2.1 R a d i a n t H e a ter
The radiant heater emits a pre-set amount of heat. A multi-conductor cable connects the
radiant heater to the control unit.
F6132300T01.fm 19.05.00
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The radiant heater contains the following subassemblies:
− Two infrared rods (600 W overall power)
− Energy-saving lamp (7 W)
− Energy-saving lamp (23 W)
− Central Alarm PCB
− Six halogen lamps (50 W) for phototherapy unit (optional)
− Switched-Mode Power Supply PCB for phototherapy unit (optional).
2
1
1
6
3
5
2
4
Fig. 15: bottom view of radiant heater
Legend
Table 6:
1 Infrared rod
2 Halogen lamps for phototherapy unit (optional)
3 Central Alarm PCB
4 Energy-saving lamp no. 1
5 Energy-saving lamp no. 2
6 Switched-Mode Power Supply PCB for phototherapy unit (optional)
F6132300T01.fm 19.05.00
When the button for the work light is pressed, both energy-saving lamps
(energy-saving lamp no. 1 and energy-saving lamp no. 2) are switched on.
When the night-light button is pressed, only energy-saving lamp no. 1 is
switched on.
For internal use only. Copyright reserved.
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2.2 Control Unit
The control unit controls and regulates the functions of the Babytherm 8010.
F6132300T01.fm 19.05.00
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D
Babytherm 8010
1
10
5
>
1
8
9
7
38°C
<
36°C
OK
6
13
°C °C
Haut °C manuell Matratze°C
Haut
man.
10
1112
Fig. 16: Front view of the control unit of Babytherm 8010
Legend
Table 7:
1 Alarm LED
(red alarm LED = warning, yellow alarm LED = caution)
2 Reset key (silence key) (15 minute alarm/10 minute alarm)
k
Inop.
2
3
4
5
3 Check key (test LEDs and audible alarm)
4 OK key
5 LEDs (green LED = operating mode, red LED = powerfail)
6 Target value adjustment for mattress heater
7 Heat level adjustment for radiant heater
8 Radiant heater ON/OFF switch
9 Skin/manual key (selector switch: manual power adjustment/skin temperature
regulation)
10 Phototherapy unit ON/OFF switch (optional)
11 Night-light ON/OFF switch (energy-saving lamp no. 1)
12 Work light ON/OFF switch (energy-saving lamp no. 1 and energy-saving lamp no. 2)
13 Skin temperature regulation target value adjustment
F6132300T01.fm 19.05.00
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12
11
1
Sensor
10
9
2
3
4
8
7
5
6
Fig. 17: Rear view of the control unit
Legend
Table 8:
1 Connection for WT Sensor PCB
2 Connections for personnel alert; max. 3 devices of workplace (connections for
central alarm)
3 Connection for public address system, personnel alert (connection for central alarm)
4 RS 232 interface (modem), optional
5 RS 232 interface (BabyLink), optional
6 Control unit ON/OFF switch
7 Voltage Selector Switch
8 Fuses
9 Connection for radiant heater
10 Fuses
11 Connection for mattress heater
12 Connection for mains power supply
F6132300T01.fm 19.05.00
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The control unit consists of the following subassemblies:
− ON/OFF switch
− Toroidal-core power transformer
− WT Power PCB
− WT Relay PCB
− WT Controller PCB
− Panel (8010 WT LED PCB, 8010 keypad, text display, WT Front PCB, loudspeaker).
2.2.1 ON/OFF Switch
The single pole ON/OFF switch switches the mains voltage on or off.
2.2.2 Toroidal-Core Power Transformer
The toroidal-core power transformer supplies the electronics and the mattress heater with the
following alternating voltages:
− approximately 24 VAC
− approximately 9 VAC.
F6132300T01.fm 19.05.00
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2.2.3 WT Power PCB
The WT Power PCB consists of the following functional modules:
− Bridge rectifier
− Voltage regulator (+5 VD)
− Voltage regulator (+5 VLED)
− GoldCap
− Charging circuit (GoldCap)
− Mains voltage power failure recognition
− Horn (mains voltage failure)
− Alarm LED drive (mains voltage failure)
− Serial data transmission
− Multiplexer
− Addressing and drive for actuators and safety relays
− Drive/request for mattress heater.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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Transformer
9 VAC
Bridge
Rectifier
Voltage
Regulator
+5 VD
Operating Voltage
WT Sensor PCB
Voltage
Regulator
1
Monoflop
Serial Data Transmission
Overtemperature
+5 VLED
Mains Failure
Recognition
WT Controller PCB
WT Controller PCBWT Sensor PCB
WT Panel PCB
WT
Controller PCB
F6132300T01.fm 19.05.00
WT Controller PCB
Drive/Request for
Mattress Heater
Heat Film
Fig. 18: Block diagram 1 of WT Power PCB
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 48
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AKKU
+5 VD
VCGX
ON/OFF
Switch Auxiliary
Contact
Horn
Test
GoldCap
Horn Drive
WT Controller PCB
RESETQX
LED+
WT Controller PCB/ 8010
Membrane Keypad
Addressing and Drive for
Actuators/Relays
Multiplexer
+5 VLED
VGCX
GCAPVOLT
Fig. 19: Block diagram 2 of WT PCB Power Supply
WT Relay PCB
ANASEL
Analog
WT Controller PCB
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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Bridge Rectifier
The toroidal-core power transformer applies approximately 10 VAC to the bridge rectifier
input from which an uncontrolled direct voltage of approximately 9 VDC is generated.
Voltage Regulator (+5 VD)
The controlled operating voltage +5 VD is generated from the uncontrolled 9 V direct voltage
by a voltage regulator.
Voltage Regulator (+5 VLED)
The controlled operating voltage +5 VLED is generated from the uncontrolled 9 V direct
voltage by a voltage regulator.
GoldCap
The GoldCap supplies the horn and the mains failure LED with operating voltage in the event
of mains voltage failure. The GoldCap voltage accumulator also buffers microcontroller RAM.
Charging Circuit (GoldCap)
The internal + 5VD operating voltage charges via a resistor-diode circuit the GoldCap. The
charging circuit is switched off once per second for testing purposes.
Mains Voltage Power Failure Recognition
A monoflop recognises a failure of the mains voltage supply.
Horn (Mains Voltage Failure)
A GoldCap provides for horn operating voltage in the event of a mains voltage failure.
Alarm LED Drive (Mains Voltage Failure)
A GoldCap provides for alarm LED operating voltage in the event of a mains voltage failure.
Serial Data Transmission
F6132300T01.fm 19.05.00
A driver module amplifies serial measurement data (skin temperature, mattress temperature
and overtemperature), test signals and control signals.
For internal use only. Copyright reserved.
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Multiplexer
The multiplexer switches the voltages (GCAPVOLT, +5 VLED) to the WT Controller PCB for
testing.
Addressing and Drive for Actuators and Relays
An addressing module, a shift register and an amplification module call up the actuators and
the safety relay for the radiant heater.
F6132300T01.fm 19.05.00
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Drive/Request for Mattress Heater
The operating voltage for the mattress heater is approximately 24 VAC. The heating circuit is
isolated from the direct voltage and is protected with a fuse. A safety relay interrupts the
heating circuit in case of error. A triac is used for switching of the heater during operation. A
series connected zero-potential, phase group switch only switches the heater on when
positive AC voltage passage occurs, and off when negative AC voltage passage occurs.
The voltage drop at the mattress heater generates impulses with a parallel connected
optocoupler, which drive a monoflop. The monoflop output indicates that the mattress heater
is in the operational mode.
F 2
+5 V
Relay On
WT Controller PCB
Heater On
Heater Feedback
Mono
K 1
Transforme r
+5 V
V 2
24VAC
Heater
24V/5A
F6132300T01.fm 19.05.00
Fig. 20: Block diagram 3 of WT Power PCB
2.2.4 WT Relay PCB
The energy-saving lamps, the infrared rods, the Central Alarm PCB and the radiant heater
phototherapy unit (optional) are driven by relays located on the WT Relay PCB. A triac
controls the infrared rods.
For internal use only. Copyright reserved.
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Page 54
The WT Relay PCB contain the following subassemblies:
− Voltage selector switch
− Infrared rods drive/feedback
− Infrared rod safety relay
− Relays (energy-saving lamps, phototherapy unit (optional))
− Drive for Central Alarm PCB.
WT Relay PCB
Voltage
Selector Switch
Relay
Feedback
Semiconduct
or Relay
from/to WT Power PCB
LEDs
Driver/Amplifier
Alarm
Relay
Safety
Relay
Relay
Opto Triac
Feedback
Circuit
F 4
F 3
ON/OFF
Switch
F 5
F 1
Transforme r
Mains Voltage
Radiant Heater
Central Alarm PCB
Energy-Saving Lamp
Energy-Saving Lamp
Infrared Rods
Phototherapy Unit
(optional)
Switched-Mode
Power Supply
PCB
F6132300T01.fm 19.05.00
Fig. 21: Block Diagram of WT Relay PCB
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 53
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Voltage Selector Switch
The voltage selector switch allows for adapting the primary circuit of the toroidal-core power
transformer to the local mains voltage.
Radiant Heater Drive/Feedback
An optocoupler drives the triac, which supplies the infrared rods with mains voltage. The
voltage of the infrared rods generates an acknowledgement signal with an optocoupler.
Infrared Rod Safety Relay
The safety relay interrupts mains voltage to the infrared rods in the event of an error (e.g.
“Inop”).
Relays (Energy-Saving Lamps, Phototherapy Unit (optional))
The relays supply the energy-saving lamps and the phototherapy unit (optional) with mains
voltage.
Drive for Central Alarm PCB
An opto triac at the WT Relay PCB drives the central alarm lamp. The opto triac supplies the
Central Alarm PCB with mains voltage.
F6132300T01.fm 19.05.00
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2.2.5 WT Controller PCB
The WT Controller PCB contains the following subassemblies:
− Microcontroller
− Quartz element
− EPROM
− EEPROM
− RAM
− Watchdogs
− Driver elements
− Multiplexer and A-D converter
− Linkage and drive for the mattress heater safety relay.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 55
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F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 56
Fig. 22: Block Diagram of WT Controller PCB
WT
Power PCB
WT
Power PCB
WT
Power PCB
Analog
AKKU
A-D
Converter
CPU
Quartz
Element
RAM
Overtemperature
RESET
EPROM
EEPROM
Watchdog 1
Watchdog 2
WT Power PCB
(safety relay)
1
WT Power PCB
1
1
1
Alarm
(horn)
WT Front PCB
(inop LED)
WT Power PCB
(drive/measurement
data/
addressing/test signals)
Tex t Displ ay, LE Ds
WT Relay PCB
WT Front PCB
WT Power PCB/
WT Front PCB
8010 keypad,
7-Segment Display,
Page 58
Microcontroller
The microcontroller controls and monitors the Babytherm program. The microcontroller
contains 2 KB RAM. Target values are stored and buffered in this RAM. An accumulator RAM
buffer voltage is generated by the GoldCap.
Quartz Element
The quartz element generates a pulse frequency of approximately 32 MHz. The
microcontroller generates a frequency of 16 MHz with this pulse frequency.
EPROM
The EPROM contains the Babytherm software program.
EEPROM
The EEPROM stores device configuration data.
RAM
The RAM is the main memory.
Watchdogs
The watchdogs monitor the software program sequence of the microcontroller. The
watchdogs are counting elements, which are timed with a separate quartz element.
If the microcontroller does not reset the counting elements, an EMERGENCY STOP signal is
generated.
Driver Elements
The driver elements amplify the signals and adjust their levels for the actuator driver.
Multiplexer and A-D Converter
The A-D Converter conver ts the +5 VLED voltage and the GoldCap voltage into a digital data
word. This data word is sent to the microcontroller for the purpose of evaluation.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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Linkage and Drive for the Mattress Heater Safety Relay
The overtemperature signal from the WT Power PCB and the output signal from the
watchdogs are linked with the drive signal for the mattress heater safety relay.
If overtemperature occurs at the mattress heater, or if the watchdogs are not reset regularly,
the mattress heater safety relay at the WT Power PCB power is switched off.
F6132300T01.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Functional Description Page 58
Page 60
2.2.6 WT Sensor PCB
The WT Sensor PCB includes the following subassemblies:
− Receiver and sender for serial data transmission
− Test signal select logic
− Measurements amplifiers (skin temperature, mattress heater)
− Overtemperature comparator
− Test circuit (41.6 °C - mattress heater)
− Test circuit (36.0 °C - skin temperature)
− A-D conversion with multiplexer.
F6132300T01.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Functional Description Page 59
Page 61
WT Sensor PCB
+5 V
Uref
Uref
Independent Shut-Off
Heating Plate
Sensor 1
NTC1
Sensor 2
NTC3
NTC2
NTC4
Reference
Voltage
–
+
S1
41.6°C
S2
41.6°C
Uref
Hybrid
Hybrid
Hybrid
Hybrid
–
+
–
+
Multiplexer
Uref
Safety Shut-Off
Test Signals
A-D
Converter
Optocoupler
WT Power PCB
Selection
Optocoupler
+5 VISO
WT Power PCB
F6132300T01.fm 19.05.00
Skin Sensor
+5VISO
Sensor1
NTC1
S1
Hybrid
DC/DC
Converter
WT Power PCB
36°C
Sensor2
NTC2
S2
36°C
Hybrid
Optocoupler
Select
Logic and
Shift
Register
Test Signals
Fig. 23: Block diagram of WT Sensor PCB
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 60
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Receiver and Sender for Serial Data Transmission
Optocouplers transmit the serial measurement data (mattress heater, skin temperature) and
the WT Sensor PCB operating voltage to the WT Power PCB. One optocoupler receives the
test signals in serial mode for the measurement circuits. One optocoupler transmits the
overtemperature signal to the WT Power PCB.
Test Signal Select Logic
An addressing module and a shift register convert the serial test signals into parallel data.
The test signals activate the following test circuits:
− Overtemperature, mattress heater (41.6 °C)
− Skin temperature (36 °C)
Measurement Amplifiers (Skin Temperature, Mattress Heater)
Two skin temperature hybrids measure the skin temperature.
Four measurement amplifiers (NTCs) measure the mattress temperature in pairs. The NTCs
are installed to the mattress in pairs. The measurement values at a single pair may not deviate
from one another more than 0.5 °C. The two measurement pairs may not deviate from one
another more than 5 °C. One measurement amplifier per pair evaluates the overtemperature
of the mattress heater (greater than 41.6 °C).
Overtemperature Comparator
Two comparators evaluate the mattress heater overtemperature signals. The comparators are
set to a voltage value, which corresponds to a mattress temperature of greater than 41.6 °C.
If the mattress reaches a temperature of 41.6 °C or greater, The output level of the
corresponding comparator approaches zero V. The mattress heater safety relay is switched
off by the hardware.
Test Circuit (41.6 °C - Mattress Heater)
A test circuit regularly monitors for correct functioning of the mattress heater
overtemperature comparator.
Test Circuit (36.0 °C - Skin Temperature)
The software monitors the skin temperature hybrid.
F6132300T01.fm 19.05.00
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Page 63
Reference resistors, which are linked to the test circuits, are connected to the inputs of the
skin temperature hybrids. The output voltage values of the skin temperature hybrids
correspond to a temperature of 36.0 °C.
A-D Conversion with Multiplexer
The multiplexer sends an analog measurement signal (skin temperature and mattress
temperature) to the integrated A-D converter. The serial output signal from the A-D converter
is connected to an optocoupler.
F6132300T01.fm 19.05.00
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2.3 Panel
The panel consists of the following subassemblies:
− 8010 WT LED PCB
− 8010 keypad
− Tex t display
− WT Front PCB
− Loudspeaker.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 63
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F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 64
Fig. 24: Block diagram of the Panel
WT Power PCB
WT Controller PCB
Panel
WT Front PCB
Address Coding/
Chip Select
Mains Failure LED
Inop LED
Contrast
Tex t Display
Latch
8010
WT PCB LED
7-Segment
Displays/
LEDs
Display/Keypad
Controller
8010 keypad
Keys
Shift
Register
LEDs
(inop/
mains failure)
Volume Control/
Sound Chip
Delay
Interfaces
Level
Shifter
Opto
coupler
Level
Shifter
External Alarm
Modem/Medibus
Serial Scale
Personnel Alert
Clock
(optional)
(optional)
Page 66
2.3.1 8010 WT LED PCB
The 8010 WT LED PCB contains 7-segment displays and light emitting diodes.
The 7-segment displays represent the skin temperature and the mattress temperature. The
LEDs represent the foot symbol and the mattress heater values < 36 °C and > 38 °C.
2.3.2 8010 Keypad
The 8010 keypad includes a key array, keys and LEDs.
2.3.3 Text Display (LC display)
The text display shows clear text messages (comments, warnings, alarms and commands).
2.3.4 Loudspeaker
Acoustic alarms are generated at the loudspeaker for alarms and comments. A volume
control and a sound chip control the loudspeaker.
F6132300T01.fm 19.05.00
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2.3.5 WT Front PCB
A port component reads in the key array. LED drive is accomplished with decoders, shift
registers and multiplex signals.
The WT Front PCB contains the following subassemblies:
− Address coding and chip select
− Sound chip with volume regulator
− Text display contrast adjustment
− Text display latch drive
− Voltage supply for text display backlighting
− Personnel alert
− Interface modules
− Level shifters
− Optocouplers
− Display module
− LED matrix drive.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 66
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F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 67
Fig. 25: Block Diagram of the WT Front PCB
WT Power PCB
WT Controller PCB
WT Front PCB
Address Coding/
Chip Select
Mains Failure LED
Inop LED
Contrast
Latch
Display/Keypad
Controller
Shift
Register
Volume Control/
Sound Chip
Delay
Interfaces
Level
Shifter
Opto
coupler
Level
Shifter
Tex t Displ ay
8010 WT LED PCB
(7-segment Displays/
LEDs)
Keys
LEDs
Loudspeaker
External Alarm
Personnel Alert
Clock
Serial Scale
(optional)
Modem/Medibus
(optional)
Page 69
Address Coding and Chip Select
Addressing and selection modules select the various hardware components.
Sound Chip with Volume Regulator
The microcontroller links the output signal of the sound chip to the output signal of the
volume regulator. The combined signal is amplified and fed to the loudspeaker.
The microcontroller can influence the volume of the volume regulator via software.
Text Display Contrast Adjustment
An amplifier module enables contrast adjustment at the text display.
Text Display Latch Drive
Latch modules drive the text display signal.
Voltage Supply for Text Display Illumination
A switching controller supplies the text display backlighting foil with a voltage of
approximately 1.0 V to 5.0 V.
Personnel Alert
In the event of an alarm a relay is activated. The relay functions as a selector switch. An
external alarm system can be connected to the selector switch (e.g. personnel alert).
An alarm delay prevents the personnel alert from being immediately activated after the Check
key has been actuated.
Interface Modules
The interface modules link the data bus to the peripheral units (medibus, modem, scale).
Level Shifters
The level shifters adapt the WT Front PCB interface to the peripheral devices interfaces.
F6132300T01.fm 19.05.00
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Page 70
Optocouplers
Optocouplers isolate the modem, the medibus and the central alarm from the
WT Front PCB.
Display Module
The display module provides the 7-segment display with operating voltage. The display
module selects the individual keys. The display module stores the actuated key in an storage
area, and sends this as information to the data bus.
LED Matrix Drive
A shift register and select logic drive the LED matrix.
F6132300T01.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Functional Description Page 69
Page 71
3Trolley
The trolley consists of a small or large trolley plate. The trolley plate is keyed to the metal
casing of the column.
The Babytherm is available with various trolleys:
− Babytherm without electric height adjustment
− Babytherm with electric height adjustment (optional).
3.1 Electric Height Adjustment (Optional)
The trolley with electric height adjustment has an adjustable work height of 885 mm to 1180
mm (small lifting column) or 950 mm to 1245 mm (large lifting column).
3.2 Options (for Retrofitting)
− Swivel cabinet
− Infusion bottle holder
− Bed canopy
− Swivel tray.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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4 Resting Surface
The resting surface includes a mattress heater.
The resting surface consists of the following subassemblies:
− Resting surface
− Bottom section tilt mechanism, bolted to base plate
− Mechanical system of tilt mechanism
− 4 corners for holding glass panels.
Various side panels can be attached to the resting surface:
− Side panels, height 23 cm
− Side panels, height 15 cm
− inner walls, 7 cm.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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The resting surface is finely adjustable with click-stop positions. The head of the patient can
be brought to the maximal upper position (20 °), or the maximal lower position (15 °).
• Pull the unlocking handle in direction A.
• If you push the handle down (B), you change the upper head position.
If you pull the handle up (C), you change the lower head position.
A
Fig. 26: Inclination adjustment for the resting surface
C
B
F6132300T01.fm 19.05.00
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Page 74
4.1 X-ray drawer (Babytherm 8004)
Babytherm 8004 has a X-ray drawer.
Fig. 27: Babytherm 8004 with X-ray drawer
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
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5 Mattress
The Babytherm 8010 may be used with different mattress.
5.1 Gel Mattress
The gel mattress consists of a highly heat-conductive gel that does not run or dislocate even
when the bed is tilted. The gel is surrounded by a film of soft material compatible with the
skin.
The mattress moulds itself to the body contours of the patient lying on it, thereby providing a
large contact surface that transfers warmth to the patient and avoids pressure points (anti
decubitus effect). The gel has good heat storage properties. If the mains supply is
interrupted, e.g. for in-hospital transport, the patient will be kept warm about 15 minutes,
provided the insulation is sufficient (blanket, cover).
When the gel mattress is cold, warmth is transferred from the patient to the mattress.
Risk of burns! Do not use gel mattress in other warming beds with
heater plate temperatures above 40 °C. Use the gel mattress in
devices which have a lower heater plate temperatures than 40 °C.
Risk of cooling the patient! The unheated gel mattress would cool the
patient. Use the gel mattress in conjunction with the resting surface
heater.
Risk of damage to the gel mattress! Sharp objects can damage the gel
mattress. Keep clear of sharp objects.
F6132300T01.fm 19.05.00
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Page 76
5.1.1 Unheated Foam Rubber Mattress
Use the unheated foam rubber mattress if the Babytherm 8010 does not work with the
resting surface heater.
6 Pneumatics (Suction)
Two suction devices can be used in the Babytherm 8010:
− Suction device –0.9 bar
− Suction device –0.9 bar.
The infinite vacuum is generated by an ejector. The suction device is supplied by way of the
or compressed-air system. All plastic parts subject to contamination can be sterilised in
O
2
an autoclave at temperatures up to 134 °C.
F6132300T01.fm 19.05.00
For internal use only. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Functional Description Page 75
Page 77
Test List
Babytherm 8004/8010
Serial no.:
—————————
Folder no.:
6132.300
Installation site:
—————————
Edition:
10/99
K6132300TL1.fm 19.05.00
D
Babytherm
Copyright reserved. Reproduction allowed for non-commercial purposes only.
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6132.300 Babytherm 8004/8010 10/99 Test List Page 76
Page 78
1Test Equipment
VDE tester 79 01 234
Short-circuit female connector VDE 0751 79 00 765
Short-circuit female connector for skin-
79 10 484
temperature sensor
2 Accompanying Documents (applies only to Germany)
Instructions for Use GA 6132.300 e (class BF)
Logbook
Instructions for Use for special accessories
3 General Condition
3.1 Trolley without Electrical Height Adjustment
Mains connection
Mains fuses
Wheels
Caps at tubular ends of trolley
Trolley
3.2 Trolley with Electrical Height Adjustment (optional)
Mains connection
Mains fuses
K6132300TL1.fm 19.05.00
Mains fuses of column
Wheels
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6132.300 Babytherm 8004/8010 10/99 Test List Page 77
Page 79
Caps at tubular ends of trolley
Foot pedals
Trolley
3.3 Control Unit
On/off switch
Mains fuses
Keypad
3.4 Radiant Heater
Mount
Swivel function
Protective guard
Infrared rods
Working light
Night light
Phototherapy lamps (optional)
Filters (optional)
3.5 Resting Surface
Lower section
Upper section
Outer panels
(panels must always properly engage in corners of housing)
Corners of outer panel mounts
K6132300TL1.fm 19.05.00
Inner panels (optional)
Tube ent ry ports
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6132.300 Babytherm 8004/8010 10/99 Test List Page 78
Page 80
Resting surface adjustment with locking lever
3.6 Base Plate
Mount
Base plate
Standard rails
Stand
Shelf
3.7 Foam Mattress (Babytherm 8004)
Foam mattress
3.8 Gel Mattress (Babytherm 8010)
Gel mattress
3.9 Swivel Cabinet (optional)
Swivel cabinet/swivel cabinets
3.10 Hook Rail (optional)
Hook rail
3.11 Side Handle on Resting Surface (optional)
Side handle
3.12 Hood (optional)
Hood
K6132300TL1.fm 19.05.00
Hood holder
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6132.300 Babytherm 8004/8010 10/99 Test List Page 79
Page 81
4 Tests as per VDE 0751 Part 1 (follow to local
legislation, standards and regulations)
Condition of power cord
Mains fuses
(Main fuses should match the values specification on nameplate.)
Test electrical safety using the common power cord of the Babytherm 8004
or the Babytherm 8010.
The resting surface of the mattress heater is not to be earthed on the
Babytherm 8004 or Babytherm 8010 of class BF.
4.1 Checking the Protective Conductor Resistance
This section describes how to measure the protective conductor resistance
of the trolley, column, electrical height adjustment (optional), mount of the
control unit, and mattress heater (Babytherm 8010).
• Plug the power cord of the Babytherm into the VDE tester.
• Connect COM test probe into the COM test socket of the VDE tester.
• Plug the power cord of the VDE tester into the mains power outlet.
• Switch on the VDE tester.
• Apply the COM test probe to the trolley, column, electrical height
adjustment (optional), mount of the control unit, and the aluminium plate
of the mattress heater (Babytherm 8010) and, at the same time, press
the “protective conductor button” on the VDE tester.
The protective conductor resistances of the trolley, column, electrical height
adjustment (option), mount of the control unit should be equal to or lower
than 0.2 Ohm.
The protective conductor resistance of the aluminium plate of the mattress
heater (Babytherm 8010) should be Ohm.
K6132300TL1.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Test List Page 80
Page 82
4.2 Checking the Equivalent Leakage Current
• Plug the power cord of the Babytherm into the VDE tester.
• Plug the power cord of the VDE tester into the mains power outlet.
• Switch on the Babytherm.
• Switch on the VDE tester.
• Press the foot pedals of the optional electrical height adjustment and
press, at the same time, the “leakage current” button on the VDE tester.
Mains power cord of
Babytherm
Babytherm
2
VDE tester
Fig. 1: Equivalent Leakage Current Test Setup
1
Short-circuit female
connector for
skin-temperature sensor
79 10 484
K6132300TL1.fm 19.05.00
Legend
1 Sensor connections
2 Unit earth (earthing stud)
The equivalent leakage current should be equal to or lower than 1.0 mA.
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Copyright reserved. Reproduction allowed for non-commercial purposes only.
6132.300 Babytherm 8004/8010 10/99 Test List Page 81
Page 83
4.3 Checking the Patient Leakage Current
• Plug the power cord of the Babytherm into the VDE tester (see Figure
below).
• Plug the power cord of the VDE tester into the mains power outlet.
• Switch on the VDE tester.
• Switch on the Babytherm.
Short-circuit female connector
VDE 0751
79 00 765
Babytherm
1
3
4
5
VDE tester
Fig. 2: Patient Leakage Current Test Setup
Legend
1 Short-circuit in mains connector (connector item no. 7900765)
2
Short-circuit female
connector for
skin-temperature sensor
79 10 484
K6132300TL1.fm 19.05.00
2 Skin temperature sensor short circuit (item no. 7910484)
3 Unit earth (earthing stud)
4 Socket SL (previously COM) on portable tester
5 Socket ABL on portable tester
The patient leakage current should be equal to or lower than 4.0 mA.
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Copyright reserved. Reproduction allowed for non-commercial purposes only.
6132.300 Babytherm 8004/8010 10/99 Test List Page 82
Page 84
5 Functional Tests
5.1 Checking the LEDs, the LED Strip and the Buzzer in
the Control Unit as well as Central Alarm Lamp in the
Radiant Heater
• Plug the power cord of the Babytherm 8004 into the mains power
outlet.
• Switch on the control unit.
• Press the "Check" key.
The LEDs and the LED strip on the control unit come on. The central alarm
lamp in the radiant heater comes on. The buzzer in the control unit sounds.
5.1.1 Checking the Infrared Rods in the Manual Mode
• Switch on the control unit.
• Set "manual mode" on control unit.
The infrared rods heat up.
5.1.2 Checking the Infrared Rods in the Skin Mode
• Connect skin-temperature sensors to the Babytherm.
• Switch on the control unit.
• Set "skin mode" on control unit.
• Place fingers firmly around ends of skin-temperature sensor cables.
The infrared rods heat up. The temperature displayed on the control unit
increase.
K6132300TL1.fm 19.05.00
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Page 85
5.1.3 Checking the Work Light in the Radiant Heater
• Switch on the control unit.
• Press the work light key.
The energy-saving lamps (work light and night light) in the radiant heater
come on.
Press the work light key again.
The energy-saving lamps (work light and night light) in the radiant heater go
out.
5.1.4 Checking the Night Light in the Radiant Heater
• Switch on the control unit.
• Press the night light key.
The small energy-saving lamp (night light) comes on.
• Press the night light key again.
The small energy-saving lamp (night light) goes out.
5.1.5 Checking the Phototherapy Lamps in the Radiant Heater
(option)
• Switch on the control unit.
• Press the phototherapy key.
• Press the OK key.
All phototherapy lamps (halogen lamps) come on.
• Press the phototherapy key again.
• Press the OK key.
All phototherapy lamps (halogen lamps) go out.
5.1.6 Checking the Mattress Heater (Babytherm 8010)
• Place the gel mattress on the resting surface.
K6132300TL1.fm 19.05.00
• Switch on the control unit.
The mattress heater warms up to the specified value.
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6132.300 Babytherm 8004/8010 10/99 Test List Page 84
Page 86
5.1.7 Checking the Mains Failure Alarm
• Unplug the power cord of the Babytherm from the mains power outlet.
• Switch on the control unit.
The red LED on the control unit comes on. The buzzer for mains failure alarm
sounds.
• Plug the power cord of the Babytherm into the mains power outlet.
The Babytherm continue to operate with the previous specified settings.
• Plug the power cord of the Babytherm into the mains power outlet.
The Babytherm continue to operate with the previous specified settings.
6 Place fully functional unit at customer’s disposal.
7Tested
Date: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Name: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
K6132300TL1.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Test List Page 85
Page 87
Replacing Non-repairable Items
1Work Light
1.1 General Information about the Work Light
The big energy-saving lamp of the radiant heater must be replaced if it is defective.
1.2 Dismounting/Replacing the Work Light
• Plug the power cord of the Babytherm into mains power outlet.
• Set the electronical height adjustment (optional) of the Babytherm to the lowest position.
• Unplug the power cord of Babytherm from the mains power outlet.
Hot parts! The halogen lamps or infrared rods may cause burns if touched
shortly after use of the radiant heater. Allow the radiant heater to cool off
for at least 15 minutes before servicing.
• Swivel the radiant heater in your direction.
• Remove the defective energy-saving lamp 1 (work light) by holding the lamp mount 2
and by turning the energy-saving lamp counter-clockwise.
1
2
Fig. 1: Bottom view of the radiant heater, dismounting the work light
• To mount the new energy-saving lamp 1 (work light) hold the lamp mount 2 and tighten
the energy-saving lamp by turning it clockwise.
• Plug the power cord of the Baybtherm into mains power outlet.
K6132300V01.fm 19.05.00
• Switch on the Babytherm.
Schutzvermerk DIN 34 beachten. Copyright reserved.
6132.300 Babytherm 8004/8010 10/99 Replacing Non-repairable Items Page 86
Page 88
• Check the function of the energy-saving lamp by pressing the work light key on the control unit.
The energy-saving lamps of the radiant heater come on.
• Press the work light key again.
The energy-saving lamps of the radiant heater are off.
K6132300V01.fm 19.05.00
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Page 89
2 Night Light
2.1 General Information about the Night Light
The small energy-saving lamp must be replaced if it is defective.
2.2 Dismounting/Replacing the Night Light
• Plug the power cord of the Babytherm into mains power outlet.
• Set the electronical height adjustment (optional) of the Babytherm to the lowest position.
• Unplug the power cord of Babytherm from the mains power outlet.
Hot parts! The halogen lamps or infrared rods may cause burns if touched
shortly after use of the radiant heater. Allow the radiant heater to cool off
for at least 15 minutes before servicing.
• Swivel the radiant heater in your direction.
• Remove the defective energy-saving lamp 1 (night light) by holding the lamp mount 2
and by turning the energy-saving lamp counter-clockwise.
1
2
Fig. 2: Bottom view of the radiant heater, dismounting the night light
• To mount the new energy-saving lamp 1 (night light) hold the lamp mount 2 and tighten
the energy-saving lamp by turning it clockwise.
• Plug the power cord of the Baybtherm into mains power outlet.
K6132300V01.fm 19.05.00
• Switch on the Babytherm.
• Check the function of the energy-saving lamp (night light) by pressing the night light key.
Schutzvermerk DIN 34 beachten. Copyright reserved.
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Page 90
The night light of the radiant heater comes on.
• Press the night light key again.
The night light of the radiant heater is off.
K6132300V01.fm 19.05.00
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Page 91
3Phototherapy (Option)
3.1 General Information about the Phototherapy Lamps
The phototherapy lamps (halogen lamps) have to be replaced after 1000 operating hours or
if one or more phototherapy lamps (halogen lamps) are defective. Have the complete set (6
halogen lamps) replaced by trained service personnel.
3.2 Checking the Phototherapy Lamps
• Plug the power cord of the Babytherm into mains power outlet.
• Switch on the Babytherm.
• Press the phototherapy key on the control unit.
• Press the OK key.
All phototherapy lamps (halogen lamps) in the radiant heater come on.
• Press the phototherapy key again.
• Press the OK key.
All phototherapy lamps (halogen lamps) in the radiant heater are off.
K6132300V01.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Replacing Non-repairable Items Page 90
Page 92
3.3 Dismounting/Replacing the Phototherapy Lamps
• Plug the power cord of the Babytherm into mains power outlet.
• Set the electronical height adjustment (option) of the Babytherm to the lowest position.
• Unplug the power cord of the Babytherm from mains power outlet.
Hot parts! The halogen lamps or infrared rods may cause burns if touched
shortly after use of the radiant heater. Allow the radiant heater to cool off
for at least 15 minutes before servicing.
• Swivel the radiant heater in your direction.
• Remove the fixing screws and washers 1 which secure the cover 2 and place the cover
aside.
1
1
Fig. 3: Bottom view of the radiant heater, removing the cover
2
K6132300V01.fm 19.05.00
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Page 93
• Remove the phototherapy lamps (halogen lamps) 1 by pulling them out together with the
halogen lamp supports.
1
1
Fig. 4: Bottom view of the radiant heater, removing the phototherapy lamps
• Mount the new phototherapy lamps (halogen lamps) including halogen lamp supports 2
into the radiant heater (pay attention to the mounting position of the halogen lamp supports, see Figure below).
115V
230V
2
Fig. 5: View of the radiant heater, mounting the phototherapy lamps
• Mount the Babytherm using the reverse method of that used for dismounting.
• Plug the power cord of the Babytherm into mains power outlet.
• Switch on the Babytherm.
• Press the phototherapy key.
All phototherapy lamps (halogen lamps) come on.
• Mount the cover on the radiant heater.
K6132300V01.fm 19.05.00
• Plug the power cord of the Babytherm into mains power outlet.
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Page 94
• Switch on the Babytherm.
• Press the phototherapy key on the control unit.
• Press the OK key.
•Hold on OK key 1 for approx. 3 seconds.
D
Babytherm 8010
Text dis play
C
A
B
C
Haut C manuell
Haut
man.
10
5
1
Matratze C
C
>
38 C
<
36 C
Check
Inop.
OK
1
Fig. 6: Front view of the control unit, using the Configuration Mode
Message on text display:
Configuration Mode
Starting with OK
• Select the Configuration Mode by pressing the OK key 1 (see Figure above).
K6132300V01.fm 19.05.00
Message on text display:
Configuration Mode
Mode c01: Software Version
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Page 95
• Select the mode c04 by pressing the arrow keys 1.
D
Babytherm 8010
Tex t display
C
A
B
C
Haut C manuell
Haut
man.
10
5
1
Matratze C
1
C
>
38 C
<
36 C
Check
Inop.
OK
Fig. 7: Front view of the control unit, using the Configuration Mode
Message on the text display:
Configuration Mode
Mode c04: Time counter photo therapy
• Reset the Timer of the phototherapy by pressing the alarm key 2 for minimum 3
seconds.
D
Babytherm 8010
Tex t display
C
A
B
C
Haut C manuell
Haut
man.
10
5
1
Matratze C
C
>
38 C
<
36 C
Check
Inop.
OK
Fig. 8: Front view of the control unit, using the Configuration Mode
Exiting the Configuration Mode
• Press the OK key to exit the Configuration Mode.
2
K6132300V01.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Replacing Non-repairable Items Page 94
Page 96
Changes
1 Type of Change
This service manual reflects the state of technology which applied in October 1999.
Type of Change Date
Functional description of Babytherm 8002 is delated 10/99
New spare parts list - edition 10/99 10/99
New Test list - edition 10/99 10/99
New spare parts list - edition 11/2000 11/2000
New spare parts list - edition 05/2001 05/2001
For internal use only. Copyright reserved.
K6132300AE1.fm 10.07.01
6132.300 Babytherm 8004/8010 10/99 Changes Page 95
Page 97
Appendix
1 Abbreviations
Abbreviations Meaning/Explanation
but Key test in Configuration Mode
CON Display contrast in Configuration Mode
c 01 bis c 08 Codes in the Configurations Mode
c 01 Displaying current software version
c 02 Set skin temperature deviation
c 03 Set volume of soft alarm
c 04 Dispolaying operating hours of phototherapy
c 05 keyboard test
c 06 Nurse call test
c 07 Set language
c 08 Set display contrast
Err error Mode
FXX error Number
Inop Malfunction
LAN Set Language in Configuration Mode
Nuc Nurse call test in Configuration Mode
SdE Maximum skin temperature deviation in Configuration Mode
SSL Volume of the soft alarm in Configuration Mode
K6132300AH1.fm 19.05.00
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6132.300 Babytherm 8004/8010 10/99 Appendix Page 96
Page 98
2 Spare parts list
K6132300AH1.fm 19.05.00
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Page 99
DrägerService Medizintechnik
DrägerService Medical Division
Dräger
Ersatzartikelliste 6132.300
Spare parts list
BABYTHERM 8004 /8010
BABYTHERM 8004 /8010
Ausgabe/Edition
06.03.02
Seite/Page 1 von 37
Druckdatum: 19.03.2002 Änderungen vorbeh alten
Printed Subject to change without notice
Page 100
DrägerService Medizintechnik
DrägerService Medical Division
Dräger
Ersatzartikelliste 6132.300
Spare parts list
BABYTHERM 8004 /8010
BABYTHERM 8004 /8010
Diese Ersatzartikelliste gilt für Sachnummer:
This spare parts list is valid for part no.:
Sach-Nr.
Part No.
FR00104
FR00105
Benennung
Description
BT8004 220-240V BAUKASTEN
BT8004 220-240V MODULAR SYSTEM
BT8010 100V-240V
BABYTHERM 8010 100V-240V
Ausgabe/Edition
06.03.02
Seite/Page 2 von 37
Druckdatum: 19.03.2002 Änderungen vorbeh alten
Printed Subject to change without notice
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