Drager Babytherm 8004, Babytherm 8010 Service Manual

R6132300T01IVZ.fm

For internal use only. Copyright reserved.

Dräger Medizintechnik

Contents

Repair Instructions

1	Babytherm 8004/8010 Service Strategy			5
2	Babytherm 8004/8010 Assemblies			7
3	Radiant Heater			8
	3.1	Dismounting the Radiant Heater from the Trolley ....................................................		8
	3.2	Mounting the Radiant Heater to the Trolley .............................................................		11
	3.3	Infrared Rods ..................................................................................................................		14
		3.3.1	General Information About the Infrared Rods .......................................	14
		3.3.2	Checking the Infrared Rods ......................................................................	14
		3.3.3	Checking the Infrared Rods with an Ohmmeter ...................................	14
		3.3.4	Replacing an Infrared Rod ........................................................................	16
	3.4	Work Light/Night Light ...............................................................................................		18
		3.4.1	General Information About the Work Light/Night Light .....................	18
		3.4.2	Checking the Work Light ..........................................................................	18
		3.4.3	Checking the Night Light ..........................................................................	18
		3.4.4	Replacing the Night Light .........................................................................	19
		3.4.5	Replacing the Work Light .........................................................................	20
	3.5	Central Alarm PCB .......................................................................................................		21
		3.5.1	General Information About the Central Alarm PCB .............................	21
		3.5.2	Checking the Central Alarm PCB ............................................................	21
		3.5.3	Replacing the Central Alarm PCB ..........................................................	22
	3.6	Phototherapy (Optional) ..............................................................................................		24
		3.6.1	General Information About the Halogen Lamps ..................................	24
		3.6.2	Checking the Halogen lamps ...................................................................	24
		3.6.3	Checking the Thermostat ..........................................................................	25

6132.300 Babytherm 8004/8010

Contents

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Contents

		3.6.4	Replacing the Halogen Lamps .................................................................	27
4	Control Unit			29
	4.1	Dismounting the Control Unit from the Trolley .......................................................		29
	4.2	Opening the Control Unit ............................................................................................		31
5	Toroidal-Core Power Transformer			33
	5.1	General Information About the Toroidal-Core Power Transformer ....................		33
	5.2	Checking the Output Voltages of the Toroidal-Core Power Transformer ........		33
		5.2.1	Replacing the Toroidal-Core Power Transformer .................................	34
	5.3	WT Power PCB ............................................................................................................		37
		5.3.1	General Information About the WT Power PCB ..................................	37
		5.3.2	Checking the WT Power PCB .................................................................	38

5.3.3Checking the Mattress Control Using Uniboard 40

(Babytherm 8010) .......................................................................................

39

5.3.4Checking the Mattress Heater via DrägerService Mode

		(Babytherm 8010) .......................................................................................	42
	5.3.5	Checking the GoldCap voltage via the DrägerService Mode ...........	42
	5.3.6	Measuring the GoldCap Voltage using Uniboard 40 .........................	42
	5.3.7	Replacing the WT Power PCB ...............................................................	44
5.4	WT Controller PCB .....................................................................................................		46
	5.4.1	General Information About the WT Controller PCB ...........................	46
	5.4.2	Checking the WT Controller PCB ...........................................................	47
	5.4.3	Replacing the WT Controller PCB .........................................................	48
5.5	WT Relay PCB ..............................................................................................................		52
	5.5.1	General Information About the WT Relay PCB ...................................	52

5.5.2Checking the WT Relay PCB using the DrägerService Mode

and the LEDs ...............................................................................................	53
5.5.3 Replacing the WT Relay PCB ..................................................................	56

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Contents

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Contents

5.6	WT Front PCB ..............................................................................................................		58
	5.6.1	General Information About the WT Front PCB ....................................	58
	5.6.2	Replacing the WT Front PCB ..................................................................	59
5.7	8004 WT LED PCB/8010 WT LED PCB ...............................................................		61

5.7.1General Information About the

		8004 WT LED PCB/8010 WT LED PCB .............................................	61
	5.7.2	Replacing the 8004 WT LED PCB/8010 WT LED PCB ...................	61
5.8	Text Display ....................................................................................................................		65
	5.8.1	General Information About the Text Display ..........................................	65
	5.8.2	Checking the Text Display Using the DrägerService Mode ..............	65
	5.8.3	Replacing the Text Display ........................................................................	65
5.9	WT Sensor PCB ..........................................................................................................		67
	5.9.1	General Information About the WT Sensor PCB ................................	67
	5.9.2	Checking the WT Sensor PCB Using the DrägerService Mode .....	67
	5.9.3	Replacing the WT Sensor PCB ..............................................................	67
5.10	ON/OFF Switch ............................................................................................................		72
	5.10.1	General Information About the ON/OFF Switch .................................	72
	5.10.2	Checking the ON/OFF Switch ................................................................	72
	5.10.3	Checking the Power Failure Contact of the ON/OFF Switch ..........	72
	5.10.4	Replacing the ON/OFF Switch ...............................................................	72
6.1	Trolley Without Height Adjustment ............................................................................		74
	6.1.1	Removing a Castor ......................................................................................	74
	6.1.2	Mounting a Castor .......................................................................................	74
6.2	Trolley With Height Adjustment .................................................................................		75
	6.2.1	Castor Pin .....................................................................................................	75
	6.2.2	Replacing the Cap ......................................................................................	75
7.1	Function Test of the Resting Surface Tilt Mechanism ..........................................		76

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		Dräger Medizintechnik
Contents
7.2	Visual Inspection of the Resting Surface Tilt Mechanism ...................................			77
	7.2.1	Dismounting the Resting Surface ...........................................................		77
	7.2.2	Adjusting the Resting Surface Tilt Mechanism ....................................		78
7.3	Re-Mounting the Resting Surface ............................................................................			79
7.4	Safety Check .................................................................................................................			80
8.1	General Information About the Resting Surface Heater ......................................			81
8.2	Checking the Resting Surface Heater .....................................................................			81
8.3	Dismounting the Heating Plate .................................................................................			82
8.4	Mounting the Heating Plate .......................................................................................			82
8.5	Checking the Resting Surface Heater After Repair .............................................			83
	8.5.1	Safety Check ................................................................................................		83
9.1	Checking Lateral Panels and Corners ....................................................................			84
9.2	Removing the Corners ................................................................................................			84
9.3	Mounting the Corners .................................................................................................			84
10.1	Checking Lateral Panels, Corners, and Hinges after Repair .............................			84

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Contents

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Repair Instructions

1Babytherm 8004/8010 Service Strategy

Table 1: Service Strategy

	Test Documents		Repair
Inspection in the	−	Test Certificate	−	Actual condition of the device
field	−	Microfiche	−	Minor repairs
			− Replacing non-repairable items
Safety check in	−	Safety check of the	−	Checking the device’s functional
the field		Babytherm		safety
		(record)
	−	Type approval
	−	Instructions for Use
Repair in the field	−	Test Certificate	−	Replacing electrical, electronic
	−	Spare parts list		and mechanical assemblies
			−
	−	Microfiche chapter “R”		Repairing assemblies
			−
	−	Repair instructions		Settings, calibrations
			−
	−	Service Bulletins (IDM)		Simple conversions
	−	Conversion instructions
	−	Circuit diagrams
	−	Function schematics
Subsidiary	−	Test Certificate	−	Replacing electrical, electronic
workshop,	−	Spare parts list		and mechanical assemblies
region			−
				Repairing assemblies
	−	Microfiche chapter “R”
			−
	−	Repair instructions		Settings, calibrations
			−
	−	Service Bulletins (IDM)		Complex conversions
	−	Conversion instructions
	−	Circuit diagrams
	−	Function schematics

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Table 1: Service Strategy

Workshop in	−	Test Certificate	−	Replacing all electrical, electronic
Lübeck	−	Spare parts list		and mechanical assemblies
			−
	−	Microfiche chapter “R”		Settings, calibrations
			−
	−	Repair instructions		Complex conversions
	−	Service Bulletins (IDM)
	−	Conversion instructions
	−	Process and inspection
		instructions
	−	Circuit diagrams
	−	Function schematics
Customer, owner,	−	Instructions for Use	−	Recording the actual condition of
user	−	Check list, if applicable		the device

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Repair Instructions

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2Babytherm 8004/8010 Assemblies

1

2

3

4

5

Fig. 1: Front view of the Babytherm 8010

Legend

1 Radiant heater

2Control unit

3Resting surface:

−with skin temperature control (Babytherm 8004)

−with skin temperature control and mattress heater (Babytherm 8010)

4Skin temperature sensor connection port (Babytherm 8004/Babytherm 8010)

5Trolley:

−with fixed column

−with electrical height adjustment (optional)

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3Radiant Heater

3.1Dismounting the Radiant Heater from the Trolley

•Set the electrical height adjustment (optional) of the Babytherm to the lowest position.

•Unplug the Babytherm power cord from the mains socket-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 1 from the T-cover plate 2.

•Place the T-cover plate 2 aside.

1

2

Fig. 2: Top view of the Babytherm, removing the T-cover plate

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•Remove the fixing screws 3 from the protective cover support 4.

•Place the protective cover support 2 aside.

3

4

Fig. 3: Top view of the Babytherm, removing the protective cover support

• Disconnect the cable connector 5 from the control unit.

5

Fig. 4: Rear view of the control unit, disconnecting the cable connector

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• Remove the fixing screws and washers 6.

6

7

7

6

Fig. 5: Top view of the Babytherm 8004/8010

Risk of personal injury! Removing all fixing screws will detach the radiant heater from the trolley causing it to fall. To avoid personal injury support the radiant heater with one arm while removing the fixing screws.

Risk of damage! Removing all fixing screws will detach the radiant heater from the trolley causing it to fall. To avoid damage to the radiant heater support it with one arm while removing the fixing screws.

• Remove the fixing screws and washers 7 from the radiant heater (see Fig. above) and carefully thread the disconnected cable of the control unit through the articulated joint.

• Place the defective radiant heater aside.

• Mount the new radiant heater onto the Babytherm trolley using the reverse method of that used for dismounting the defective radiant heater.

		• Mount the protective cover support onto the control unit.
		• Mount the T-cover plate onto the trolley.
	For internal use only. Copyright reserved.	• Perform a function test on the radiant heater, see "Test Certificate".
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3.2Mounting the Radiant Heater to the Trolley

Risk of personal injury. The radiant heater is heavy and may fall down when mounted to the trolley by one person only. To avoid this, mount the radiant heater to the trolley with the help of a second person.

•Mount the radiant heater to the trolley. To do so, thread the cable protruding from the radiant heater through the articulated joint and secure the radiant heater to the trolley using the fixing screws and washers 1. (Note: The tightening torque for the fixing screws is 3 +0,5 Nm.)

•Secure the fixing screws 1 with Loctite 221.

1

1

1

1

Fig. 6: Babytherm (top view)

• Connect the cable connector 2 to the control unit.

2

Fig. 7: Control unit (rear view); connecting the cable connector

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• Mount the grounding cable using the fixing screw and spring washer 1.

1

Fig. 8: Side view of the T-piece, mounting the grounding cable

• Secure the protective cover support using the fixing screws 2.

2

Protective cover support

Fig. 9: Babytherm (top view); mounting the protective cover support

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• Mount the T-cover plate 2 to the trolley using the fixing screws 3.

3

2

Fig. 10: Babytherm (top view); mounting the T-cover plate

• Test the function of the radiant heater, see "Test Certificate".

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3.3Infrared Rods

3.3.1General Information About the Infrared Rods

If the infrared rods of the radiant heater are defective they must be replaced.

3.3.2Checking the Infrared Rods

•Press the “skin/man” key and activate the “man” function.

•Press the OK key.

•Use the arrow keys to adjust heating level “1”.

The desired heating level “1” is indicated by one bar LED on the 8004/8010 control unit. The infrared rods of the radiant heater radiate a lower amount of heat (to check, hold open hands at approx. 30 cm from the infrared rods).

• Use the arrow keys to adjust heating level “6”.

The desired heating level “6” is indicated by six bar LEDs on the 8004/8010 control unit. The infrared rods of the radiant heater radiate a higher amount of heat (to check, hold open hands at approx. 30 cm from the infrared rods).

3.3.3Checking the Infrared Rods with an Ohmmeter

• Disconnect cable connector 1 from the control unit.

1

Fig. 11: Rear view of the control unit

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• Connect test probes of ohmmeter to pin contacts 1 and 2 of the cable connector.

The measured resistance should be approx. 86 ohms.

infrared rods

1	2

Fig. 12: Cable connector pins

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3.3.4Replacing an Infrared Rod

•Set the electrical height adjustment (optional) of the Babytherm to the lowest position.

•Unplug the Babytherm power cord from the mains socket-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 screws and washers 1 from the cover 2 and place the cover 2 aside.

1

2

1

Fig. 13: Top view of the radiant heater, removing the cover

• Disconnect the cables of the defective infrared rod from the terminals 3.

3

3

Fig. 14: Top view of the radiant heater, disconnecting the cables

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•Hold the defective infrared rod from the underside and remove the clamps 4 by pushing them aside.

•Thread the cables of the defective infrared rod through the holes of the radiant heater and pull the defective infrared rod down and out of the radiant heater.

•Dispose of the defective infrared rod according to local waste disposal regulations.

4

4

Fig. 15: Top view of the radiant heater, removing the clamps

•Mount the new infrared rod using the reverse method of that used for dismounting the defective infrared rod.

•Perform a function test on the infrared rod, see "Checking the Infrared Rods".

•Check Babytherm using the Test Certificate, see "Test Certificate".

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3.4Work Light/Night Light

3.4.1General Information About the Work Light/Night Light

The work light or the night light of the radiant heater must be replaced if they are defective.

3.4.2Checking the Work Light

•Plug the Babytherm power cord into the mains socket outlet.

•Switch on the Babytherm.

•Press the work light key.

The energy-saving lamps of the radiant heater are switched on.

• Press the work light key again.

The energy-saving lamps of the radiant heater are switched off.

3.4.3Checking the Night Light

•Plug the Babytherm power cord into the mains socket outlet.

•Switch on the Babytherm.

•Press the night light key.

The small energy-saving lamp of the radiant heater is switched on.

• Press the night light key again.

The small energy-saving lamp of the radiant heater is switched off.

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3.4.4Replacing the Night Light

•Set the electrical height adjustment (optional) of the Babytherm to the lowest position.

•Unplug the Babytherm power cord from the mains socket-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.

21

Fig. 16: View on the actuators of the radiant heater, removing 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.

•Mount the Babytherm using the reverse method of that used for dismounting.

•Plug the Babytherm power cord into the mains socket outlet.

•Check the function of the energy-saving lamp 1 (night light) by pressing the night light key.

The night light of the radiant heater should come on.

• Check Babytherm using the Test Certificate, see "Test Certificate".

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3.4.5Replacing the Work Light

•Set the electrical height adjustment (optional) of the Babytherm to the lowest position.

•Unplug the Babytherm power cord from the mains socket-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 1 counter-clockwise.

1 2

Fig. 17: 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.

•Mount the Babytherm using the reverse method of that used for dismounting.

•Plug the Babytherm power cord into the mains socket outlet.

•Check the function of the energy-saving lamp 1 (work light) by pressing the work light key.

Both energy-saving lamps of the radiant heater should come on.

• Check Babytherm using the Test Certificate, see "Test Certificate".

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3.5Central Alarm PCB

3.5.1General Information About the Central Alarm PCB

If the Central Alarm PCB is defective, it should be replaced completely.

3.5.2Checking the Central Alarm PCB

•Plug the Babytherm power cord into the mains socket outlet.

•Switch on the Babytherm.

•Press the Check key.

The central alarm lamp (located on the Central Alarm PCB) should flash.

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3.5.3Replacing the Central Alarm PCB

•Set the electrical height adjustment (optional) of the Babytherm to the lowest position.

•Unplug the Babytherm power cord from the mains socket-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 screws and washers 1 of the cover 2 and place the cover 2 aside.

1

2

1

Fig. 18: Bottom view of the radiant heater, removing the cover

• Disconnect the connector 3 from the Central Alarm PCB 4.

3

4

Fig. 19: Bottom view of the radiant heater, removing the connector

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Repair Instructions

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• Compress the printed circuit board mount 1 and remove the Central Alarm PCB.

1

1

Fig. 20: Bottom view of the radiant heater, removing the Central Alarm PCB

•Replace the defective Central Alarm PCB with a new one.

•Mount the radiant heater using the reverse method of that used for dismounting.

•Connect the Babytherm power cord into the mains socket outlet.

•Switch on the Babytherm.

•Press the Check key.

The central alarm lamp (located on the Central Alarm PCB) should flash.

• Check Babytherm using the Test Certificate, see "Test Certificate".

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3.6Phototherapy (Optional)

The phototherapy of the radiant heater consists of the following assemblies:

−Switched-Mode Power Supply PCB;

−six halogen lamps;

−two thermostats.

The thermostats of the phototherapy are connected in series with the halogen lamps. If one thermostat is defective, it will not be possible to switch on the phototherapy (halogen lamps).

3.6.1General Information About the Halogen Lamps

The complete set of halogen lamps should be replaced after 1000 operating hours or in the event of a failure.

Two halogen lamps each are connected in series. Therefore, if one halogen lamp fails, the other one of the respective pair will not come on either.

3.6.2Checking the Halogen lamps

•Plug the Babytherm power cord into the mains socket outlet.

•Switch on the Babytherm.

•Press the phototherapy key on the control unit.

•Press the OK key.

All halogen lamps in the radiant heater come on.

•Press the phototherapy key again.

•Press the OK key.

All halogen lamps in the radiant heater go out.

• Check Babytherm using the Test Certificate, see "Test Certificate".

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3.6.3Checking the Thermostat

•Set the electrical height adjustment (optional) of the Babytherm to the lowest position.

•Switch off the Babytherm.

•Unplug the Babytherm power cord from the mains socket-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

2

1

Fig. 21: Top view of the radiant heater, removing the fixing screws

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• Measure the contact resistance of thermostat 1.

The contact resistance of the thermostat should be approx. 0 ohms.

1

1

Fig. 22: Top view of the radiant heater, mounting position of the thermostat

If the thermostat has an infinite contact resistance, it is defective.

•Replace the defective thermostat with a new one.

•Make sure that the protective screen which cover the thermostats has not been pushed into the radiant heater.

The clearance of the protective screen to the terminals of the thermostats must be at least 2.5 mm.

•Secure the cover to the radiant heater using fixing screws and washers.

•Plug the Babytherm power cord into the mains socket-outlet.

•Switch on the Babytherm.

•Press the phototherapy key.

All halogen lamps in the radiant heater should come on.

•Perform a leakage current measurement using the Test Certificate, see "Test Certificate".

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