Drager 8000 SC, 8000 NC User manual

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8. Repair Information Unit, Electronics Module, Climatic Sensor

Table of Contents

8.1Unit................................................................................................................................2

8.1.0Table of Contents...................................................................................................2

8.1.1Information on Unit 2M 20 276 / 2M 20 615 (of Inc. 8000 SC/IC/NC)....................3

8.1.2PCB Unit and Fuses...............................................................................................3

8.1.3Air Heating with Thermal Release..........................................................................6

8.1.4Boiler with Water heating and Thermostatic Switch...............................................6

8.1.5Fan Motor...............................................................................................................8

8.1.6 Mains Transformer...............................................................................................10

8.1.7Semiconductor Relay...........................................................................................10

8.1.8Test of Heating Unit (Complete)...........................................................................11

8.1.9Voltage Selection.................................................................................................26

8.1.10Replacement of Unit in the event of Repair..........................................................27

8.1.11Repair Information and Change Status................................................................27

8.2Electronics module......................................................................................................28

8.2.0Table of Contents.................................................................................................28

8.2.1Keyboards............................................................................................................30

8.2.2PCB Display Air Temperature..............................................................................36

8.2.3PCB Display (of options), PCB Display Skin (as of SW 11 and 21).....................39

8.2.4PCB Display Humidity (only Inc. 8000 SC/NC)....................................................42

8.2.5PCB CPU..............................................................................................................44

8.2.6PCB Analog with PCB Filter.................................................................................56

8.2.7PCB Power Pack..................................................................................................74

8.2.8PCB Motherboard and PCB Fan..........................................................................80

8.2.9PCB Switch...........................................................................................................84

8.2.10N/A.......................................................................................................................84

8.2.11PCB Controller (RS232) 82 90 581......................................................................85

8.3Climatic sensor............................................................................................................90

8.3.0Table of Contents.................................................................................................90

8.3.1Information on Climatic Sensors..........................................................................90

8.3.2Climatic Sensor 82 90 380 and 2M 21 688..........................................................91

8.3.3Testing and Adjustment........................................................................................92

8.3.4Replacement and Repair......................................................................................95

8.3.5Repair Information and Change Status................................................................96

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8.1 Unit

8.1.0 Table of Contents

8.1.3

H2O

Air

8.1.5

8.1.4

8.1.7

8.1.6

8.1.2

8.1.1 Information on Units Used

8.1.2 PCB Unit and Fuses

8.1.3 Air Heating with Thermal Release

8.1.4 Boiler with W ater Heating and Thermostatic Switch

8.1.5 Fan Motor

8.1.6 Mains Transformer

8.1.7 Semiconductor Relay

8.1.8 Testing of Unit (Complete)

8.1.9 Voltage Selection

8.1.10 Replacement of Unit in the event of Repair

8.1.11 Repair Information and Change Status

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8.1.1 Information on Unit 2M 20 276 / 2M 20 615 (of Inc. 8000 SC/IC/NC)

Characteristics:

PCB Unit 82 90 511

- All connections to printed circuit board plugged-in

- Heating cartridges for one mains voltage only (100 V, 120 V / 127 V or 230 V / 240 V)

- Boiler (complete) plugged-in. In the Inc. 8000 SC/IC/NC it can be removed through a service opening without dismounting the Unit

Since both Units are identical as far as their function is concerned it is possible to use the Unit 2M 20 615 in the Inc. 8000, refer to 8.1.9 "Replacing in the event of Repair".

8.1.2 PCB Unit and Fuses

Layout Component Mounting Side:

T58

T57

100

110

127

230

T60

240

T3 T4 T2 T5

T41 T42 T43 T44

T54

T56

T59

F1 F2

X12

T61

X10

X11

X3 X4

T53

F5 F6 F7 F8 F9 F10

T55

T7 T10 T9 T8 T63

C2 +

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Layout Rear:

X13

Component Mounting without Fuses:

Position Component Function

X1 Connector 18 13 641 Cable connection to electronics module X2 Connector 18 13 544 Cable connection to valve(s) X3, X4 Terminal 68 04 759 Mains connection X5 Connector 18 10 669 Connection for coil of fan watchdog,

Thermostatic switch water shortage and

control of semiconductor relay X6 Connector 18 28 592 Connection mains voltage for transformer X7 Connector 18 28 576 Return transformer voltages X10 Connector 18 28 533 Connection heating cartridge for water

heating X11 Connector 18 28 541 Connection semiconductor relay supply side X12 Connector 18 28 525 Connection heating cartridge of air heating X13 Connector 18 28 533 Connection fan motor K1, K5 Relay 18 30 732 Mains closing relay K2 Relay 18 21 474 Safety relay for heating K3 Relay 18 21 474 Safety relay for valve(s) K4 Relay 83 01 198 Safety relay for disconnection Semiconductor

relay of heating valve(s) T54 Transformer 18 13 927 Auxiliary transformer for mains closing relays

K1 and K5

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Fuses:

Position 100 V to 127 V 220 V to 240 V

F1, F2 T 6,3 A 18 15 172 T 3,15 A 18 15 148 F 3 T 80 mA 18 14 974 T 40 mA 18 14 931 F4 T 1A 18 15 083 T 500 mA 18 15 059 F5 T 200 mA 18 15 016 T 200 mA 18 15 016 F6 T 500 mA 18 15 059 T 500 mA 18 15 059 F7 T 2,5 A 18 15 121 T 2,5 A 18 15 121 F8 T 1,6 A 18 15 105 T 1,6 A 18 15 105 F9, F10 T 160 mA 18 15 008 T 160 mA 18 15 008

Testing:

Refer to 8.1.8 "Testing Unit (complete)"

Replacement in the event of repair:

In the event of repair the PCB Unit 82 90 511 (complete) can be replaced or components can be renewed. All relays are available for this purpose, refer to component mounting list.

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8.1.3 Air Heating with Thermal Release

Three different heating cartridges are uses i n this Unit:

- 220 V to 240 V (132 Ohm) 2M 20 329

- 120 V / 127 V (33 Ohm) 2M 20 331

- 100 V (25 Ohm) 2M 20 669 Prolonged heating cartridges are in use since 1992. When installing these heating cartridges

lock them using an M4-screw.

8.1.3.3 Thermostatic Switch

A safety thermostat which has been tripped must be replaced, no soldering permitted. Prior to replacement, determine cause for tripping, for example:

- wrong heating cartridges

- device assembled incorrectly The resistance of the thermostat can be checked at its contacts.

8.1.4 Boiler with Water heating and Thermostatic Switch

The boiler system is a plug-in unit consisting of:

- Aluminum housing 2M 20 291

- Heating cartridge for 230 V, 120 V / 127 V or 100 V

- Cap for vaporizer 2M 20 292

- O-ring cap 2M 08 777

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- Thermostatic switch water shortage alarm 115 °C 2M 20 381

- Safety thermostat 140 °C 2M 20 382

- Plug-in connector

All components can be replaced in the event of repair. If the safety thermostat has been tripped both thermostatic switches must be replaced.

Service:

The condition of the boiler housing must be checked every six months. If the vaporizer chamber is soiled it can be scraped out.

Heating cartridges:

- 220 V to 240 V (530 Ohm)2M 20 327

- 120 V / 127 V (132 Ohm) 2M 20 328

- 100 V (100 Ohm) 2M 20 668

Prolonged heating cartridges are in use since 1992. As before, the end of the heating cartridge must be flush with the boiler housing.

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8.1.5 Fan Motor

Fan motor (simplifi ed representation):

43,5 +/- 0,5

Service required:

The fan motor must be lubricated every six months with oil 2M 07 839. Procedure: Remove screw A located next to the motor shaft and apply approx. 10 drops of oil into the bore hole.

Bearing play:

The bearing play can be adjusted using screw B. The screw must be adjusted such to allow a motor shaft play of approx. 0.2 mm. The screw must be sealed with locking compound.

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Replacing the Fan Motor

Procedure:

- Interrupt mains connection to Incubator and remove Unit

- Unscrew coil of the fan watchdog from aluminum block of the motor mount

- Disconnect cable connection from motor to printed circuit board

- Unscrew fixing bracket underneath the motor

- Measure and write down dimension E of the 4 retaining screws

- Remove 4 retaining screws

- Using oil 2M 07 839 lubricate later bearing surface of V-ring C of the new motor

- Plug new motor with springs onto threaded pins and screw 4 retaini ng screw D onto dimension

- Precision adjustment: While the Unit is in its working position the motor shaft must protrude by

43.5 +/- 0.5 mm from the top edge of the aluminum block and must be positioned perpendicularly to the block. The motor must be suspended freely on the springs.

- Seal the 4 retaining screws D with Loctite 221.

- Lubricate the motor

- The remaining steps of the installation are performed in the reverse order

- When connecting the grounding rings make sure that they do not protrude from the edge of the resilient motor retaining plate. The fl at head screws of the motor retaining clip must be sealed with locking compound.

After installation into the Incubator make sure that the fan wheel does not rub against

the tank and that it can move freely on the spring-loaded bearing.

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8.1.6 Mains Transformer

- Transformer with Efen sensor 82 90 426

The test procedure is described under 8.1.8.3

8.1.7 Semiconductor Relay

The test procedure is described under 8.1.8 The following spare parts can be used in the event of repair:

- Semiconductor relay (electromagnetic or crydom 18 31 399 partial interference suppression)

- Semiconductor relay 18 21 148

Note: The semiconductor relays 18 31 399 have a better switching behavior.

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8.1.8 Test of Heating Unit (Complete).

8.1.8.0 Contents

8.1.8.1 Test equipment required

8.1.8.2 Preparation of test

8.1.8.3 Test of power-up relay and supply voltages

8.1.8.4 Test of fan monitoring

8.1.8.5 Test of relay K4

8.1.8.6 Test of relay K3

8.1.8.7 Test of relay K2, air heating and feedback air heating

8.1.8.8 Test of relay K2, water heating and thermo-switch

8.1.8.9 Test of heating unit inside incubator

8.1.8.1 Test equipment required

- Tester heating unit Inc. 8000 79 01 764

- Multimeter 79 01 021

- Measuring line, red 1 m 79 01 022

- Measuring line, black, 1m 79 01 023

- Mains line (only if heating unit is disassembled for test)

- 40-pole ribbon cable use the one of incubator or

"test board uni 40" 79 00 610

- 10-pole ribbon cable included in tester "heati ng unit"

Inc. 8000" 79 01 764 or use the one of "test board uni 40" 79 00 610

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8.1.8.2 Preparation of test

The heating unit of Incubators 8000 SC/ICNC can be tested while assembled or disassembled.

Note: If the unit is disassembled an isolating transformer must be used. Test set-up (Netzkabel = power cord):

PCB Unit (part of the heating unit)

- Interrupt mains connection

- Connect tester to X1 PCB Unit using cable

- Connect tester to X2 PCB Unit, the cable connection to the valve(s) must be interrupted before

- Set all switches at tester to "0" (off)

- Interrupt water supply to boiler of the heating unit

- Attach fan wheel

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- Establish mains connection to incubator (heating unit installed) respective to heating unit (not installed)

Set switch K1 at tester to "1" (on).

- Action inside the heating unit o Mains power-up relays K1/K5 (heating unit 82 90 511) on o Fan wheel turns

- Test of tester displays: o LED + 30 V lights up o LED 18 V ∼ F5 lights up o LED 18 V ∼ F6 lights up o LED 9 V ∼ F7 lights up

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8.1.8.3 Test Set-up for testing a Unit in the Field

It is possible to use the fol lowing test-up for testing the power unit in the field:

open up the unit

•

disconnect the electronic module

•

connect the power unit and the test box with the 40 pin cable

•

carry out the test procedures as given in the following pages (i.e. item 8.1.8.3 and

•

onwards)

Note: The 3 LEDs marked in the drawing below are not active in this test-setup.

Do not connect

40 pin conn.

- Measurement of supply voltages at tester o alternating voltage 18 V ∼ F5

test value: U= 18 V + 15 %

o alternating voltage 18 V ∼ F6

test value U = 18 V + 15 %

o alternating voltage 9 V ∼ F7

test value U = 9 V + 15 %

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o direct voltage + 30 V

test value U = 30 V + 4 V

Possible errors:

Error Possible cause

no reaction after switching of K1 - mains input fuses F1/F2 defective

- fuse F3, F9 or F10 of auxiliary mains transformer defective (F9 and F10 only on PCB 82 90 511)

- mains power-up relay K1 or. K1/K5 defective

- fuse F4 for mains transformer defective

- mains auxiliary transformer or rectifier behind mains auxiliary transformer on PCB defective

- Efen sensor of transformer defective

LED 18 V ∼ F5 off or voltage outside the tolerance

- fuse F5 defective

- transformer defective

- voltage changeover to PCB O.K.?

LED 18 V ∼ F6 off or voltage outside the tolerance

- fuse F6 defective

- transformer defective

- voltage changeover to PCB O.K.?

LED 9 V ∼ F7 off or voltage outside the tolerance

- fuse F7 defective

- transformer defective

- voltage changeover to PCB O.K.?

LED + 30 V off, fan wheel stops - fuse F8 defective

- transformer defective

LED + 30 V off, fan wheel turns - rectifier for + 30 V on PCB defective,

alternating voltage exists, because fan wheel

turns LED + 30 V lights up, fan wheel stops

- fan motor defective

- starting capacitor for fan motor defective

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Troubleshooting:

component to be tested test

fuses resistance measurement with disassembled fuses mains auxiliary transformer and rectifier behind mains auxiliary transformer Efen sensor transformer If after switch on the voltage on the PCB exists in

voltage measurement on the PCB via capacitor C2, test value approx. 12 V

front of the transformer, and no LED lights up on the tester, the transformer must be replaced. The voltage (mains voltage) is measured on the PCB between the soldering joint for mains voltage adjustment and fuse F4.

8.1.8.4 Test of fan monitoring

Prepare test as described in 8.1.8.2, test 8.1.8.3 passed.

Switch K1 at tester set to "1" (on), the fan wheel turns. Measurement of alternating voltage at tester at socket "feedback fan" and GND. Test value:

Measurement using an oscilloscope VSS > 2,8 V Peak to Peak

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in this respect only the negative half-wave is important

or (very inaccurate)

Measurement using multimeter: V > 0,6 V

∼

In the case where a high ohm multimeter is used, measure over a 10-20 KOhm resistor as follows:

10-20 K

Note: Observe service information No. 29 in case of

electronics module Incubator 8000 with PCB Motherboard 82 00 850, otherwise an excess output voltage might result in INOP error 9.

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Possible errors:

Error possible cause

Voltage cannot be measured - fan wheel properly attached?

- cable connection of PCB to coil of fan monitoring interrupted fan monitoring interrupted

- coil of fan monitoring defective (measure voltage directly at the coil with the heating unit disassembled)

voltage too low observe service information No. 1 (Inc.

8000SC/IC) and service information No. 31 (Inc.

8000), with Inc. 8000 observe service information No. 29!

voltage ok, but continuous fan

PCB Motherboard in electronics module failure alarm at the assembled incubator INOP-error 9 with assembled Incubator 8000

voltage too high, observe service i nformation

No. 29 for Incubator 8000. In Incubator 8000

SC/IC this means there is a failure on the PCB

Motherboard.

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8.1.8.5 Test of relay K4

Prepare test as described in 8.1.8.2, test 8.1.8.3 passed.

Switch K1 at tester set to "1" (on), LED "+ 30 V" at tester lights up. Test: LED at tester behind switch K4 off Switch K4 at tester set to "1" (on) Test:

LED at tester behind switch K4 lights up Switch K4 at tester set to "0" (off) Note: The voltage behind the switching contacts of relay K4 can be

measured at the socket behind switch K4 at the tester.

Possible errors:

Error possible cause

LED always off or no voltage relay K4 defective LED continuously lights up or vol tage exists continuously

relay K4 defective

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8.1.8.6 Test of relay K3

Prepare test as described in 8.1.8.2, tests 8.1.8.3 and 8.1.8.5 passed.

Switch K1 and K4 at tester set to "1" (on), LED "+ 30 V" lights up. Switch V1 and V2 set to "1" (on)

Test: LED V1 and V2 at tester light up. Switch K3 at tester set to "1" (on)

Test: LED V1 and V2 off Switch K3 at tester set to "0" (off)

Possible errors:

Error possible cause

LED V1 or V2 continuously light up relay K3 defective LED V1 or V2 continuously off relay K3 defective

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8.1.8.7 Test of relay K2, air heating and feedback air heating

Prepare test as described under 8.1.8.2, tests 8.1.8.3 and 8.1.8.5 passed.

Switch K1 and K4 at tester set to "1" (on) Switch K2 and HLR1 at tester set to "1" (on) Test:

Horn (high frequency) in tester on, air heating gets warm (do not allow to become too

hot, at 350 °C the thermostatic switch operates) Switch K2 set to "0" (off), the relay interrupts the power supply to the air heating Test: Horn in tester off Switch K2 set to "1" (on) Test: Horn in tester on Switch HLR1 set to "0" (off), the semiconductor relay of the ai r heating is switched off Test: Horn in tester off

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Possible errors:

Error possible cause

horn continuously off - relay K2 defective

- HLR1 of air heating defective

- air heating defective (hi ghly ohmic)

- thermostatic switch of air heating operates

- feedback defective

(line interrupt) horn cannot be switched off with K2 relay K2 defective horn cannot be switched off with HLR1 semiconductor relay HLR1of air heating

defective

Troubleshooting:

Component to be tested Test

Thermostatic switch air heating Resistance measurement approx. 0 Ohm, defective

switches must be replaced

Air heating Resistance measurement, different types of

heating cartridges may be used:

- 132 Ohm (230 V / 240 V)

- 33 Ohm (120V / 127 V)

- 25 Ohm (100V)

- 2 x 60 Ohm (230/115 V) Semiconductor relay HLR1 for air heating

For this bridge contacts of relay K2 on the PCB via the test points:

- PCB 82 90 511 and PCB 82 00 600 ≥ 4:

bridge test points T55 and T57

- PCB 82 00 600 - 3:

bridge between fuse holder F2 and solder tag T6 (connection air heati ng) Switch on heating via tester (as described in the test above); however, heating cannot be switched off via K2.

Relay K2 For this bridge HLR1 of air heating at the mains

side directly at HLR at connections 1 and 2. The front relay is the HLR for the air heating. Switch on heating via tester (as described in the test above), however, the heating cannot be switched off via K2

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8.1.8.8 Test of relay K2, water heating and thermostatic switch

Prepare test as described under 8.1.8.2, tests 8.1.8.3 and 8.1.8.5 passed.

Switch K1 and K4 at tester set to "1" (on) Test: LED "H2O-shortage" shows green light Switch K2 and HLR2 set to "1" (on) Test: Boiler gets warm, after approx. 5 to 15 minutes horn on and LED "H2O-shortage" shows

red light Switch HLR2 at tester set to "0" (off) Test: After 5 minutes max. horn off, LED "H2O-shortage" at tester shows green light again Repeat all test steps

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Possible errors:

Error possible cause

Boiler does not heat up, LED "H2Oshortage" continuously shows green light

- excess temperature switch at heating switched off

- heating cartridge defective (hi ghly ohmic)

- relay K2 defective

- HLR2 of water heating defective Boiler heats up, LED "H2O-shortage" continuously shows green light LED "H2O-shortage" continuously shows red light Boiler cannot be switched off by means

thermostatic switch water shortage defective (always closed) thermostatic switch water shortage defective (always open) HLR2 defective

of switch "HLR2"

Troubleshooting:

component to be tested test

excess temperature switch resistance test at resettable thermostatic switch

at boiler (approx. 0 Ohm). If switch has operated both thermostatic

switches at the boiler must be replaced. Semiconductor relay HLR2 of water heating

For this, bridge contacts of relay K2 on the PCB

via the test points:

- PCB 82 90 511 and PCB 82 00 600 ≥ 4:

Bridge test points T55 and T58

- PCB 82 00 600 -3:

bridge between fuse holder F2 and

solder tag T11 (connection water heating)

Switch on heating via tester (as described in the

test above), however the heating cannot be

switched off via K2 Relay K2 For this, bridge HLR2 on the mains side directly

at HLR at connection 1 and 2. The HLR of the

water heating is the back relay. It must be

possible to switch on the heating via the tester,

however, it cannot be switched off by means of

switch "HLR2", but only with switch K2.

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8.1.8.9 Test of heating unit in the incubator

Assemble incubator in operable condition and switch it on. Test: No INOP or error alarm after switch-on test Perform O2 calibration (not Inc. 8000 SC/NC) and increase O2-desired value by at least 5 %

by vol. compared to actual value Test: No error-alarm in O2-module Set humidity desired value to maximum: Test with water supply:

The humidity measured value rises after a few minutes

Test without water supply:

Water-shortage alarm after a few minutes. The heating is switched off by the control,

the boiler cools down and the warning is switched off. Repeat test several times. Measurement of power consumption of water heating

Measure power consumption of unit. After self-test briefly withdraw and insert the

environmental sensor, thus air heating is suppressed for 90 seconds and with switched-

on humidity module and at max. desired value now a pulsating current of approx. 0,5 A

(230 V to 240 V-units) or of approx. 1 A (100 V to 127 V-units) can be measured.

Note: By pressing the two desired value buttons in the humidity module switched on for

approx. 3 seconds, a "heating LED" can be called up in the humidity module. Thus the

control and the pulsating current can be compared.

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8.1.8.10 Testing of valves

As a special function the valve of Inc. 8000 IC can be triggered with the tester "heating unit Inc. 8000".

Prepare test set up as described in 8.1.8.2, but connect valve(s) to X2 on the PCB Unit, the previous cable connection to the tester is no longer used. The LEDs at the tester for "V1", "V2" and the LED behind K4 do not have any function now.

For switch-on set the following switches at the tester to "1" (on): K1, K4 and V1 or V2

8.1.9 Voltage Selection

Caution: The electrical height adjustment is only intended for a voltage range of (100 V to 127 V or 220 V to 240 V)! In Incubator 8000 SC/IC/NC also observe mains input fuses!

The following circuit must be modified on the PCB 82 90 511:

- Solder jumper on printed circuit board into desired mains voltage position, refer to

8.1.2 Layout. There are several versions avail able, therefore the marking for the mains

voltages on the printed circuit board shall apply!

- In addition, the following soldering jumpers for the auxiliary transformer need to be

soldered:

220 V to 240 V: soldering jumper T42 ↔ T43

100 V to 127 V: soldering jumpers T41 ↔ T42 and T43 ↔ T44

- Modify fuses on the printed circuit board, refer to 8.1.2.2 The heating cartridge of the air heati ng must be replaced:

- 220 V to 240 V 2M 20 329

- 120 V /127 V 2M 20 331

- 100 V 2M 20 669 The heating cartridge of the water heating must be replaced:

- 220 V to 240 V 2M 20 327

- 120 V / 127 V 2M 20 328

- 100 V 2M 20 668

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8.1.10 Replacement of Unit in the event of Repair

In the event of repair the Units for the Incubators 8000 and 8000 SC/IC/NC can be replaced by the Unit 2M 20 615. This order number includes heating cartridges, boil er and fuses for 120 V / 127 V. The Unit 2M 20 276 was only intended for one specific mains voltage and is no longer available.

8.1.11 Repair Information and Change Status

8.1.11.1 Boiler for Inc. 8000 SC/IC in Unit 2M 19 940 for Inc. 8000

The boiler system for Inc. 8000 is considerably easier to service. The boiler housing can be replaced at considerably less cost. For servicing purposes it is still necessary to remove the Unit because the housing of Incubator 8000 has no servicing flap.

The following parts are required for modification:

- Boiler modification kit 2M 20 680

- Boiler (complete) 230 V / 240 V 2M 20 618 or

- Boiler (complete) 120 V / 127 V 2M 20 619 The modification kit will be available as of approx. September 1993.

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8.2 Electronics module

8.2.0 Table of Contents

Position of the sub-assemblies in the electronics module:

8.2.8

8.2.11

8.2.5

8.2.7

8.2.6

8.2.10

8.2.9

8.2.28.2.38.2.38.2.3 / 8.2.4

8.2.1 (Ink. 8000)

8.2.1 (Inc.8000 SC/IC)

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8.2.1 Keyboards, Inc. 8000 NC/SC/IC

8.2.2 PCB Display Air Temperature

8.2.3 PCB Display (of options), PCB Display Skin

8.2.4 PCB Display Humidity (only Inc. 8000 SC/NC)

8.2.5 PCB CPU and Software-Information

8.2.6 PCB Analog and PCB Filter

8.2.7 PCB Power Pack and Voltage Controller

8.2.8 PCB Motherboard and PCB Fan

8.2.9 PCB Switch

8.2.10 Push Buttons for Height Adjustment (only Inc. 8000)

8.2.11 PCB Controller (RS232)

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8.2.1 Keyboards

8.2.1.0 Table of Contents

8.2.1.1 Information about keyboards used

8.2.1.2 N/A

8.2.1.3 Keyboards Incubator 8000 SC/IC/NC

8.2.1.4 Test

8.2.1.5 Exchange in case of repair

8.2.1.6 Repair information and change status

8.2.1.1 Information about keyboards used

Different keyboards are used in the Incubators:

Incubator 8000 SC/IC/NC:

- Inc. 8000 IC with skin temperature control

- Inc. 8000 IC without skin temperature control

- Inc. 8000 SC/NC with skin temperature control

- Inc. 8000 SC/NC without skin temperature control

The keyboard is connected to the PCB Display Air Temperature and is read out

therefrom. The keyboard is structured like 4 or 3 individual keyboards of Inc. 8000, but

with one cable connection only.

8.2.1.2 N/A

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8.2.1.3 Keyboards of Incubator 8000 SC/IC/NC

The keyboard is to be seen like 3 or 4 individual keyboards. Pin assignment:

111

Field for air temperature control:

1246

35 7

8 7 6 5 4 3 2

S7 S6 S5 S4 S3 S2 S1

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Field for humidity, oxygen and skin temperature:

4 5 6 7

Note: "Foot symbol" key (where fitted) is S4.

Module X = Pin terminal

Skin temperature Pin 9 Oxygen Pin 10 Humidity Pin 11

The keyboard switches can be tested ohmically.

S5 S4 S3 S2 S1

8.1.1.4 Test

All keyboards can be tested ohmically, please refer to 8.1.1.3. In assembled condition the following tests can be performed:

If a key is identifi ed as being pressed for more than 30 seconds an error storage

(potential INOP or Err-message) is performed.

8.2.1.5 Exchange in case of repair

The keyboards cannot be repaired and must be replaced in case of an error. The following spare parts are available:

Keyboards of Incubator 8000 IC:

Software version For units Keyboard

20.nn (old) w/o skin-temperature meas. 82 90 470

20.nn (old) with skin-temperature meas.

(1 measurement channel)

Currently 2 possibilities:

- 82 90 467 (discontinued type)

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- 2M 21 681 Important for use of 2M 21 681 in units which used to have a different keypad:

- Use strip supplied to deactivate key for second skin-temperature channel.

- On display PCB (82 90 431) for skin, remove third LED from top, as there is no hole for this in the new keyboard.

21.nn (new) w/o skin-temperature meas. 82 90 470

21.nn (new) with skin-temperature meas.,

1 measurement channel

2M 21 681 Important: Use strip supplied to deactivate key for second skintemperature channel. Please order the sticker 2M 21 921 always in addition to the spare parts keypad or electronics module for US units with ThermoMonitoring.

21.nn (new) with skin-temperature meas.,

2 measurement channels (ThermoView)

2M 21 681 Important: Use strip supplied to activate key for second skintemperature channel. Please order the sticker 2M 21 921 always in addition to the spare parts keypad or electronics module for US units with ThermoMonitoring.

Keyboards of Incubator 8000 SC/NC:

Software version For units Keyboard

10.nn (old) w/o skin-temperature meas. For SC and NC with central alarm

LED:

- 2M 21 182 or only for SC (discontinued type) w/o central alarm LED labeled „Incubator 8000 SC“:

- 82 90 419 Note: The central alarm LED is not served by SW 10.nn and is also not described in operating instructions.

10.nn (old) with skin-temperature meas.

(1 measurement channel)

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Currently several possibilities: For SC and NC without central alarm

Page 34

LED:

- 2M 21 180 (discontinued type) or only for SC (discontinued type) w/o central alarm LED labeled „Incubator 8000 SC“:

- 82 90 415 In future for all SC and NC with central alarm LED:

- 2M 21 691 Important for use of 2M 21 691 in units which used to have a different keyboard:

- Use strip supplied to deactivate key for second skin-temperature channel.

- On display PCB (82 00 650 or 82 90 431) for skin, remove third LED from top, as there is no hole for this in the new keyboard. Note: The central alarm LED is not served by SW 10.nn and is also not described in operating instructions.

11.nn (new) w/o skin-temperature meas. For SC and NC with central alarm

LED:

- 2M 21 182

11.nn (new) with skin-temperature meas.,

1 measurement channel

2M 21 691 Important: Use strip supplied to deactivate key for second skintemperature channel.

11.nn (new) with skin-temperature meas.,

2 measurement channels (Thermomonitoring)

2M 21 691 Important: Use strip supplied to activate key for second skintemperature channel.

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8.2.1.6 Repair information and change status

Re: Change of skin temperature deviation alarm from 0.5 to 1.0 ºC for

all US versions of Incubator 8000 IC with ThermoMonitoring

Reason: All US versions Incubator 8000 IC with ThermoMonitoring for the USA

and Canada will be delivered with a skin temperature deviation alarm limit of 1.0 ºC according the US version of the Operating Instructions of the Incubator 8000 IC Software Version 21.n.

Solution: For this change the following modification is necessary:

1. Place a sticker " ± 1 ºC " with the order no. 2M 21 921 on the keypad of the skin temperature control module directly over the " ± 0.5 ºC " label.

2. Change the jumper configuration X5 on the Analog PCB 82 90 680 from:

1 1

0.5 ºC to 1.0 ºC

8 8

Devices affected: All Incubators 8000 IC as of software version 21.n in the USA and

Canada.

Additional info: Please order the sticker 2M 21 921 " ± 1 ºC " always in addition to the

spare parts keypad or electronics module.

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8.2.2 PCB Display Air Temperature

8.2.2.0 Table of Contents

8.2.2.1 Information about PCB Display Air Temperature used

8.2.2.2 N/A

8.2.2.3 PCB Display Air Temperature 82 90 411 (Inc. 8000 SC/IC/NC)

8.2.2.4 Test

8.2.2.5 Exchange in case of repair

8.2.2.6 Repair information and change status

8.2.2.1 Information About PCB Display Air Temperature Used

PCB Display Air Temperature 82 90 411 (of Inc. 8000 SC/IC/NC)

With this PCB In case of repair this PCB can be installed in all Incubators 8000 and 8000 SC/IC/NC, please refer to 8.2.3.5 "Exchange in case of repair".

8.2.2.2 N/A

all

keyboards of Incubator 8000 and 8000 SC/IC/NC can be connected.

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8.2.2.3 PCB Display Air Temperature 82 90 411

Layout connection side for keyboard:

82 90 411

111

Layout component mounting side:

82 90 411

Configuration:

Position Component

X1 Connection to motherboard X2 Connection to keyboard

D1 Keyboard and display driver 18 20 877

8.2.2.4 Test

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Displays:

All displays, except for the mains failure LED can tested with the air temperature module by pressing the "Check" key. The LED mains failure only lights up in case of mains failure and the operational LED li ghts up as soon as the unit is switched on. In the case of an error in the keyboard and display driver an INOP message is given.

Keyboard evaluation:

The keys can be simulated by short-circuiting of connecti ons (keys) at connector X2, please also refer to 8.2.1.2 and 8.1.2.3. When short-circuiting the keys or in the event of a short-circuit on the PCB for more than 30 seconds an error is stored (does not apply to SW 0.4 of Inc. 8000).

8.2.2.5 Exchange in case of repair

- PCB Display Air Temperature 82 90 411

8.2.2.6 Repair information and change status

1. Manufacturing fault in the PCB Display Air Temperature 82 90 411 08.94

Description: Contact problems between this board and the PCB Motherboard due to

soldering agent vapors at the plug-in connector X1. The fault is visible at the plug-in connector: OK = contacts are gleaming gold

Not OK= contacts are silver gray Devices affected: Incubators 8000 SC/IC manufactured between June '92 and end '93.

Measures: No preventive check required since this fault has reportedly occurred only

once so far (August 94). Should this type or fault occur, then replace the

board.

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8.2.3 PCB Display (of options), PCB Display Skin (as of SW 11 and 21)

8.2.3.0 Table of Contents

8.2.3.1 Information about PCBs Display used

8.2.3.2 PCB Display 82 00 431 / 82 90 650 / 82 90 691

8.2.3.3 Functional adjustment for humidity, oxygen and skin temperature

8.2.3.4 Exchange in case of repair

8.2.3.5 Test

8.2.3.6 Repair instructions and change status

8.2.3.1 Information about PCBs Display used

Incubator 8000 SC/IC/NC:

- PCB Display 82 90 431

- PCB Display Skin 82 90 691 (with SW 11.nn and 21.nn)

PCB Display Skin 82 90 691 is only intended for skin temperature. It is required with SW 11.nn and 21.nn.

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8.2.3.2 PCB Display 82 90 431

Layout connection side keyboard:

82 00 650 / 82 90 431

Layout configuration side:

82 00 650 / 82 90 431

S7 S8 S9

S1 - S6

Configuration:

Position Component

X1 Connection to motherboard X2 Connection to keyboard of Inc. 8000, unassigned in Inc.

8000 SC/IC/NC D1 Keyboard and display driver S1 to S9 Option switch or soldering bridges, refer to 8.2.3.3

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8.2.3.3 Functional adjustment for humidity, oxygen and skin temperature

Before installing the PCB Displays, it is necessary to adjust the function of the board using the switches or the soldering bridges S1 to S9. The soldering bridges are located at the same point as the switches.

Skin temperature Oxygen Humidity

S7 S8 S9

S1 - S6

S1, S4 and S7 closed S2, S5 and S8 closed S3, S6 and S9 closed

8.2.3.4 Exchange in case of repair

- PCB Display 82 90 431

- PCB Display Skin 82 90 691 The new PCB Display Skin 82 90 691 is required if the Incubator features the PCB

Analog 82 90 680 with SW 11.nn or 21.nn. The difference with respect to the old PCB Display 82 90 431 is that there is a differently positioned LED for the additional key for readout of the second skin-temperature channel. This new PCB Display Skin 82 90 691 can be used on all units IC/SC/NC for skin temperature.

8.2.3.5 Test

The display is tested as described in 8.2.2.4 "Test of PCB Display Air Temperature". Note: The keyboards for the options of Incubator 8000 are connected to this PCB, but evaluations takes place on the PCB Display Air Temperature.

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8.2.3.6 Repair instructions and change status

1. Manufacturing fault in the PCB Display 82 90 431 08.94

Description: Display flickers or INOP with display error has occurred. Cause: Contact problems between this board and the PCB Motherboard due to

soldering agent vapors at the plug-in connector X1. The fault is visible at the plug-in connector: OK = contacts are gleaming gold

Not OK = contacts are silver gray Devices affected: Incubators 8000 SC/IC manufactured between June '92 and end '93.

Measures: No preventive check required since this fault has reportedly occurred only

once so far (August 94) on the PCB Display Air Temperature 82 90 411.

Should this type or fault occur, then replace the board.

2. Soldering switches replace DIL switches 08.94

As of end 94, the option switches S1 to S9 will be replaced with soldering switches, refer to 8.2.3.5.

8.2.4 PCB Display Humidity (only Inc. 8000 SC/NC)

8.2.4.0 Table of Contents

8.2.4.1 Description PCB Display Humidity 82 90 451

8.2.4.2 Exchange in case of repair

8.2.4.3 Repair information and change status

8.2.4.1 Description of PCB Display Humidity

The PCB Display Humidity is almost identical with the PCB Display 82 90 431, but the LEDs, switches and 7-segment displays for Inc. 8000 SC not used are not fitted. Test and layout plan are identical with PCB Display, refer to 8.2.3. The switch or the soldering bridge S9 must be adjusted or bridged as described in 8.2.3.3. The switches S1 to S8 (if available) remain open.

8.2.4.2 Exchange in case of repair

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For repair of the PCB Display Humidity the following spare part may be used:

- PCB Display Humidity 82 90 431

8.2.4.3 Repair information and change status

1. Manufacturing fault in the PCB Display Humidity 82 90 431 08.94

Description: Display flickers or INOP with display error has occurred. Cause: Contact problems between this board and the PCB Motherboard due to

soldering agent vapors at the plug-in connector X1. The fault is visible at

the plug-in connector:

OK = contacts are gleaming gold

Not OK = contacts are silver gray Devices affected: Incubators 8000 SC/IC manufactured between June '92 and end '93.

Measures: No preventive check required since this fault has reportedly occurred only

once so far (August 94) on the PCB Display Air Temperature 82 90 411.

Should this type or fault occur, then replace the board.

2. Soldering switches replace DIL switches 08.94

As of end 94, the option switch S9 will be replaced with a soldering switch, refer to

8.2.3.3. This connection must be closed, S1 to S8 must remain open.

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8.2.5 PCB CPU

8.2.5.0 Contents

8.2.5.1 Information about PCB CPUs used

8.2.5.2 PCB CPU Standard 2

8.2.5.3 PCB CPU Incubator

8.2.5.4 Test

8.2.5.5 Exchange of PCB CPU in the case of repair

8.2.5.6 Repair information software

8.2.5.7 Repair information and modification states

8.2.5.1 Information about PCB CPUs used

Two different PCB CPUs can be used in Incubator 8000 SC/IC/NC. PCB CPU Standard 2 (83 05 141)

A Standard-CPU, which is used in several Dräger-devices, e.g. in Incubator 8000 series and EVITA. In the incubator many functions of this PCB are not used..

PCB CPU Incubator 8000 (82 90 571)

A modified version of the PCB CPU Standard 2, in which components which are not used are not fitted, e.g. the battery for retention of data. This PCB can only be used in Incubator 8000 and Incubator 8000 SC/IC/NC.

Note:

replaced by a modification status "≥ 01", see IDM no. 15 or TSB no. 12.

In the event of repairs both versions can be used. The different fittings are described in in

8.2.5.2 and 8.2.5.3, also refer to 8.2.5.5 "Exchange of PCB CPU in the case of repair.

The PCB CPU Incubator 82 90 571 with the modification status "00" is being

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8.2.5.2 PCB CPU Standard 2 (83 05 141)

Layout plan (Drawing shows configuration with software 1x.xx or 2x.xx.):

T2 (GND)

CPU Standard 2

T1 (5V)

D14

D13

X4 X3 X2

D12

D11 D10 D9

Configuration of jumper fields with jumper 18 14 508:

LED V11

SW 0.4

Position SW 1.xx, 1x.xx or 2x.xx

X2 not fitted X3 not fitted X4 not fitted X5 1-2, 3-4 (like drawing) X6 1-18, 4-15, 8-11 (like drawing) X7 not fitted X8 3-4 (like drawing)

Configuration of components:

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Component and Position

D1 Microprocessor 18 09 156 D6 Address decoder 83 04 920 D8 Time-Keeper-RAM 18 28 142

D9 not fitted D10 not fitted D11 not fitted D12 EPROM, see 8.2.5.5 D13 Timer 18 13 900 D14 not fitted B1 not fitted

Calibration of voltage comparator:

The voltage comparator on the PCB CPU Standard 2 is not required for Incubator 8000 SC/IC/SC, potentiometer R1 must be turned right until it stops (clockwise).

SW 1x.xx or 2x.xx

(Pin 1 of component into Pin 3 of base)

Note: If after use of this PCB in the incubator it shall be used in a different device (e.g. Evita) the voltage comparator must be calibrated to the value of the respective unit before.

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Function of LED V11

LED Cause Remedy

off or glows slightly normal condition off or glows slightly,

but unit shows sporadic INOP-errors without storage of INOP error numbers LED lights up, device indicates INOP

- +5V-supply defective (unstable)

- Voltage comparator incorrectly adjusted

- Watchdog-error

- Voltage comparator incorrectly adjusted

- +5V-supply too low

- Test of +5V-voltage on the PCB CPU between T1 and T2: test value V = 4,8 to 5,2V

- Check voltage comparator on PCB CPU

Replace PCB CPU

- Check voltage comparator on PCB CPU

- Check of +5V-voltage on PCB CPU between T1 and T2, Test value V = 4,8 to 5,2V

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8.2.5.3 PCB CPU Incubator 8000 (82 90 571)

Note:

by a modification status "≥ 01", see IDM no. 15 or TSB no. 12. Layout plan:

The PCB CPU Incubator 82 90 571 with the modification status "00" is being replaced

X20

T2 (GND)

CPU Incubator 8000

X19

D13

T1 (5V)

LED V11

D12

Configuration of jumper fields with jumper 18 14 608:

Position Software 1.xx, 1x.xx or 2x.xx

X5 1-2, 3-4 (like drawing) X6 1-18, 4-15, 8-11 (like drawing) X8 3-4 (like drawing) X19 1-2 (like drawing) X20 1-2 (like drawing)

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Component configuration:

Component and Position Software 1.xx, 1x.xx, 2x.xx

D1 Microprocessor 18 09 156 D6 Address decoder 83 04 920 D8 Time-Keeper-RAM 18 28 142 (Pin 1 of component in

Pin 3 of base) D12 EPROM, see 8.2.5.6 D13 Timer 18 13 900 B1 (not shown) Battery not provided, SW 0.4 not possible

Calibration:

Not required.

Function of LED V11:

LED Cause Remedy

LED off or glows slightly normal condition LED lights up, incubator

switches to INOP

- Power-On-Reset on PCB CPU (N22) defective

Replace PCB CPU

immediately after switch-on

- Jumper X19 missing

LED lights up, Incubator O.K. - Voltage comparator N22

- Check jumper Replace PCB CPU

defective

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Page 50

8.2.5.4 Test

The test is performed by the operation software, the errors are listed in the error list, if technically possible and can be read out.

The following error description indicates a CPU error:

- Device goes to INOP immediately after switch-on. In this case first of all check all operating voltages, please refer to 6, troubleshooting.

- LED on the PCB CPU lights up, see function of LED in 8.2.5.2 and 8.2.5.3.

8.2.5.5 Exchange of PCB CPU in case of repair

Note:

by a modification status "≥ 01", see IDM no. 15 or TSB no. 12.

PCB CPU Standard 2 (less useful)

The PCB CPU Incubator 82 90 571 with the modification status "00" is being replaced

The following components are required for repair:

- PCB CPU Standard 2 83 05 141

- Timer 18 13 900

- RAM (only for SW 0.4) 18 17 426

- Time-Keeper-RAM 18 28 142

(for SW 1.xx, 1x.xx or 2x.xx)

- Address-Decoder 83 04 920

- Jumper 18 14 508

(to be taken from the defective PCB CPU)

- EPROM see 8.2.5.6 or spare parts list

Note: With SW version 1.xx, 1x.xx or 2x.xx battery B1 must be unsoldered.

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Page 51

PCB CPU Incubator (useful)

The following components are required for exchange:

- PCB CPU Incubator 82 90 571

- Time-Keeper-RAM 18 28 142

- EPROM see 8.2.5.6 or spare parts list

- Jumper 18 14 508

(are to be taken from defective PCB CPU)

Note:

replaced by a modification status "≥ 01", see IDM no. 15 or TSB no. 12.

The PCB CPU Incubator 82 90 571 with the modification status "00" is bei ng

8.2.5.6 Repair information software

Important: When performing repairs, software version is not to be upgraded from 10.nn to 11.nn or from 20.nn to 21.nn. Exception: Retrofitting with ThermoMonitoring set. These units have different operating instructions. Please note: SW 11.n is not available for US versions!

Comparison of new software versions 11.nn (SC/NC) and 21.nn (IC) with old software versions

10.nn and 20.nn

Incubator 8000 IC with skin-temperature measurement

Assembly SW 21.nn (new) SW 20.nn (old)

Analog PCB Order no. 82 90 680

Connection of 1 or 2 skintemperature sensors is by way of wiring harness on left of basic housing. Recognition of 1 or 2 sensors is via the wiring harness which has its own connector separate from the other sensor connections. Range: 30 to 42 °C

Climate sensor 2M 21 688

without skin temperature connection

Order no. 82 00 920 Connection of skin-temperature sensor on IC is to climate sensor. Range: 33 to 38 °C.

82 90 380 with skin temperature connection

Keyboard New keyboard 2M 21 681 with

additional key for readout of second skin-temperature channel. If key is

6141.22x Incubator 8000 SC/ IC/NC Repair Information 11.99 Page 51 of 96

Use can be made of either the old or the new keyboard

Page 52

not needed due to absence of thermomonitoring option, the key

position is covered with a strip. Skin display PCB

New skin display PCB 82 90 691

with LED at different position for

Use can be made of old or new

Display PCB additional key requi red for readout of optional second skin-temperature channel.

Incubator 8000 IC without skin-temperature measurement

Assembly SW 21.nn (new) SW 20.nn (old)

Climate sensor 2M 21 688 without skin temperature

connection

82 90 380 with skin temperature

connection

Incubator 8000 SC/NC with skin-temperature measurement

Assembly SW 11.nn (new) SW 10.nn (old)

Analog PCB Order no. 82 90 680

Connection of 1 or 2 skintemperature sensors is by way of wiring harness on left of basic

Order no. 82 00 920

Skin-temperature sensor is

connected on back of unit.

Range: 33 to 38 °C. housing. Recognition of 1 or 2 sensors is via the wiring harness.

Keyboard New keyboard 2M 21 691 with

additional key for readout of second skin-temperature channel. If key is not needed due to absence of

Use can be made of either the old or

the new keyboard. An alarm LED

(central alarm) is not actuated even

if it is fitted. ThermoMonitoring option, key position is covered with a strip. Additional feature: Alarm LED (central alarm).

Skin display PCB

New skin display PCB 82 90 691 with LED at different position for

Use can be made of old or new

Display PCB. additional key needed for readout of optional second skin-temperature channel.

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Incubator 8000 SC/NC without skin-temperature measurement

No fundamental changes in terms of function between SW 10.nn and 11.nn, however different operating instructions.

Assembly SW 11.nn (new) SW 10.nn (old)

Keyboard with central alarm no central alarm

The following software versions apply to the units:

Incubator 8000 IC with software 20.nn:

- SW 20.00 allowed, but no longer available Is replaced by SW 20.01 (errors must be identified three times consecutively to lead to

an Err- or INOP error). Principle exchange is not intended, but useful should errors occur sporadically.

- SW 20.01 allowed, but no longer available

- SW 20.02 allowed, but no longer available Are replaced by SW 20.03: Service mode "A" has been included (vol tage A/D test

channel), skin-temp. mode up to 39 °C (previously 37 °C), additional alarm delay of 90 s for O2-measurement after swiveling climate sensor in, 2nd skin temp. channel provided by software (hardware is being prepared).

- SW 20.03 allowed, but no longer available

- SW 20.04 2M 22 327

Incubator 8000 SC/NC with SW 10.nn:

- SW 10.00 not released

- SW 10.01 / 10.02 all owed, but no longer available Are replaced by SW 10.03 (errors must be identified three times consecutively to lead

to an Err- or INOP error). A principle exchange is not intended, but useful should errors occur sporadically.

- SW 10.03 allowed, but no longer available

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Page 54

Is replaced by SW 10.04: Service mode "A" has been included (voltage A/D test channel), skin-temp. mode up to 39 °C air temperature (previously 37 °C).

- SW 10.04 allowed, but no longer available

- SW 10.05 2M 22 326

Incubator 8000 IC with software 21.nn:

- SW 21.02 2M 22 331

Incubator 8000 SC/NC with SW 11.nn (not available for US versions):

- SW 11.02 2M 22 332

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8.2.5.7 Repair information and modification states

1. New PCB CPU Incubator 01.93

From the beginning of 1993 all Incubators 8000 SC/IC/NC will include the new PCB CPU Incubator 83 05 141. This PCB CPU replaces the current PCB CPU Standard 2. In case of repair both versions can be used, since the PCB CPU Incubator is a simplified version of PCB CPU Standard on which unused components are not fitted. Also refer to

8.2.5.5 "Exchange of PCB CPU in case of repair".

Note:

replaced by a modification status "≥ 01", see IDM no. 15 or TSB no. 12.

The PCB CPU Incubator 82 90 571 with the modification status "00" is being

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8.2.6 PCB Analog with PCB Filter

8.2.6.0 Table of Contents

8.2.6.1 Information about PCBs used

8.2.6.2 PCB Analog 82 00 770 / 82 00 920 with PCB Filter 83 02 526

(layout up to mid 95)

8.2.6.3 PCB Analog 82 00 770 / 82 90 920 / 82 90 680

(layout as of mid 95)

8.2.6.4 Test and Calibration PCB Analog 82 00 770 / 82 00 920 / 82 90 680

8.2.6.5 N/A

8.2.6.6 Exchange of PCB Analog in case of repair

8.2.6.7 Repair information and change status

8.2.6.1 Information about PCBs used

3 different PCBs are currently in use in Incubator 8000 and 8000 SC/IC/NC.

Incubators without skin temperature control:

- PCB Analog 82 00 770 Note: partly fitted PCB Analog 82 00 920 without skin temperature amplifier.

Incubators with skin temperature control:

- PCB Analog 82 00 920 Note: Until end of 1992 the units including PCB Analog 82 00 920 were equipped with a

PCB Filter Circuit 83 02 526. During repair thi s PCB Filter Circuit may be removed and replaced by two jumpers on the PCB Analog 82 00 920, please refer to 8.2.6.2.

Only for SW 11.nn or 21.nn:

- PCB Analog 82 90 680

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8.2.6.2 PCB Analog 82 00 770 / 82 00 920 with PCB Filter 83 02 526 (layout

up to mid 95)

Layout: (the figure below shows PCB Analog 82 00 920 fully equipped):

(X3)

N19 N18

R24

R81

25 26

1 2

R15R69R67

R19R12

R55

R83

R60R31

R75

R71

82 00 770 / 82 00 920

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Configuration:

Position Component or function

X1 Connection to PCB Motherboard X2 Connection to climatic sensor (Inc. 8000 and Inc. 8000

IC) or to air temperature sensor

(Inc. 8000 SC/NC) X3 not used X4 26 test points X5 Connection to PCB Filter Circuit with PCB Analog 82

00 920. If no PCB Filter Circuit is i nstalled, jumpers

from X5/1 to X5/4 and from X5/2 to X5/5 must be

soldered on the back. D1 Multiplexer 18 23 345 D2 A/D-converter 18 23 256 K1, K2 (K1 not with 82 00 770) Relay 18 13 714 N18 Voltage controller +5 V 18 21 458 N19 Voltage controller -5 V 18 23 337 Potentiometer R4 Calibration of air temperature amplifier Potentiometer R7 Calibration of air temperature amplifier Potentiometer R12 Calibration of overtemperature amplifier Potentiometer R15 Calibration of overtemperature amplifier Potentiometer R19 Calibration of overtemperature comparator 40°C R24 Calibration of skin temperature amplifier R31 Calibration of skin temperature amplifier R60 no function Potentiometer R67 no function Potentiometer R69 no function R71 Calibration of A/D converter Potentiometer R75 Calibration of A/D converter Potentiometer R81 no function R55 / R83 Voltage divider A/D test channel

Calibration:

see 8.2.6.4

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Repair information:

1 . Repair information error 19 and 65

Whenever the PCB Analog 82 00 770 / 82 00 920 or the voltage regulator for + 15 V or

- 15 V or the PCB Power Pack 82 90 461 is replaced the A/D test channel must be checked and calibrated, if necessary, please refer to 8.2.6.4.

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8.2.6.3 PCB Analog 82 00 770 / 82 90 920 / 82 90 680 (layout as of mid

95)

Layout: (the figure below shows PCB Analog 82 00 920 / 82 90 680 fully equipped):

R31

R125

V40V39

R24

1 8

25 26

1 2

R15

R19R12

R83

R55

R75

R71

T3 T1 T2

82 00 770 / 82 00 920 / 82 90 680

Important:

- LED V40 lights if - 5 V for AD converter is available. This voltage is stepped down from the - 15 V.

- LED V39 lights if + 5 V for AD converter is available. This voltage is stepped down from the + 15 V.

Calibration: see 8.2.6.4

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Important: Repair information, errors 19 and 65

On replacing PCB Analog 82 00 770 / 82 00 920 / 82 90 680 or voltage regulator for + 15 V or

- 15 V or PCB Power Pack 82 90 461 A/D test channel must always be checked and if

necessary calibrated, see 8.2.6.4.

Wiring harness, skin temperature (82 90 680 only):

This is the side connection for skin-temperature sensors with cable link to PCB Analog 82 90 680. Important: With this PCB, skin-temperature sensor(s) is/are attached to connector X6.

X6 X6

Sensor 1 Sensor 1

Sensor 2

1 8

25 26

1 skin-temperature connection:

- Wiring harness, complete (with socket) 2M 21 738 2 skin-temperature connections:

1 2

- Wiring harness, complete (with socket) 2M 21 738

extended with

- (*) Thermomonitoring option (with 2nd socket) 2M 21 733

(incl. ThermoView PC program 2M 21 888)

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Important:

Al l US versions Incubator 8000 IC with ThermoMonitoring for the USA and

Canada will be delivered with a skin temperature deviation alarm limit of 1.0 ºC according the US version of the Operating Instructions of the Incubator 8000 IC Software Version 21.n.

For this change the following modification i s necessary:

1. Place a sticker " ± 1 ºC " with the order no. 2M 21 921 on the keypad of the skin temperature control module directly over the " ± 0.5 ºC " label.

2. Change the jumper configuration X5 on the Analog PCB 82 90 680 from:

1 1

8 8

0.5 ºC to 1.0 ºC

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8.2.6.4 Test and Calibration of PCB Analog

Table of Contents

a Test equipment required b Test of operating voltages c Calibration of A/D test channel d Calibration of air temperature amplifier e Calibrati on of excess-temperature amplifier and excess-temperature comparator f Calibration of skin temperature amplifier g Test of O2-inputs and O2 comparators h Calibration of A/D converter

a Test equipment required

- Multimeter 79 01 021

- Measuring adapter Incubator 8000 79 01 471 or

- Testboard uni 40 79 00 610

- Sensor simulator Incubator 8000 (for d, e , g, and e) 79 01 240

- Skin temperature sensor simulator (for f) 79 01 236

- 2 decade resistors (for f and e) 79 01 146

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b Test of operating voltages

Unit is open, but ready for operation. Switch on Incubator. To facilitate measurement the measuring adapter 79 01 471 can be connected to terminal strip X4.

Measurement of voltages at terminal strip X4: TP 25 (+ 5 V, of PCB Power Pack) ⇒ TP 26 (GNDD): V = + 5,0 ± 0,2 V TP 18 (+ 15 V, of PCB Power Pack) ⇒ TP 26 (GNDD): V = + 15,0 V ± 0,6 V TP 22 (- 15 V, of PCB Power Pack) ⇒ TP 26 (GNDD): V = - 15,0 V ± 0,6 V TP 20 (+ 5 V, generated on PCB Analog) ⇒ TP 21 (GNDA): V = + 5,0 V ± 0,4 V TP 24 (- 5 V, generated on PCB Analog) ⇒ TP 21 (GNDA): V = - 5,0 V ± 0,4 V

c Calibration of A/D test channel

Important: As of SW 10.04 (Inc. 8000 SC/NC) and SW 20.03 (Inc. 8000 IC) it is possible to read out this voltage directl y in mV in service mode "A", see 6.2.2.11.

Unit is open, but ready for operation. Switch on unit and wait for self-test. Read out voltage of A/D test channel:

- In service mode "A" or

- Measure the A/D test channel voltage at the multiplexer D1 between Pin 2 (test voltage)

and Pin 12 (GNDA) using a quick multimeter (79 01 021, Soar or BBC).

R19R12

R83

R55

R75

R71

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Measurement is performed after the self-test (approx. 35 seconds), but the device must not be in INOP condition. In the event of an INOP error 65 or 19 follow the calibration instructions.

Test value: The A/D test channel test voltage is the lower voltage with the multiplexer

switched through. V = 4.4 ± 0.3 V

Calibration instructions: In the event of deviations from the test value the voltage divider R55 / R83 must be modified: Important: The new layout as of approx. mid 95 features soldering terminals for calibration of

the AD converter test voltage: T1 (AD test) and T2 (+15 V) are in parallel with R55 T1 (AD test) and T3 (-15 V) are in parallel with R83

- Voltage too low or error 65: Increase voltage by means of additional resistor in series with R83 and repeat test,

recommendation: approx. 2kohm.

- Voltage too high or error 19: Reduce voltage by means of additional resistor in series with R55 and repeat test,

recommendation approx. 1kohm.

d Calibration of air temperature amplifier

- Connect sensor simulator Incubator 8000 (79 01 240) to X2.

- The sensor simulator must have the following basic setting: o Temperature = 35 °C o Humidity = 70 % o Sensor = 1

- Switch on incubator and wait for 35 second self-test.

- Measure voltage between X4/3 and X4/21 (GNDA)

- Set voltage to V = 625 mV ± 0,5 mV using potentiometer R7

- Measure voltage between X4/4 and X4/21 (GNDA)

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- Use potentiometer R4 to set the voltage to V = 2,917 V ± 0,005 V

- Indication on actual value display air temperature = 35,0 °C ± 0,1 °C

- Set sensor simulator to 25,0 °C

- Indication on actual value display air temperature = 25,0 °C ± 0,2 °C

- Set sensor simulator to 45,0 °C

- Indication on actual value display air temperature = 45,0 °C ± 0,2 °C

e Calibration of excess temperature amplifier and excess temperature

comparator

- Connect sensor simulator Incubator 8000 (79 01 240) to X2

- The sensor simulator must have the following basic setting: o Temperature = 35 °C

o Humidity = 70 % o Sensor = 1

- Switch incubator on and wait for 35 seconds self-test

- Call up service mode 5, please refer to 6.3 service mode

- Measure voltage between X4/6 and X4/ 21 (GNDA)

- Use potentiometer R15 to set the voltage to 625 mV ± 0,5 mV

- Measure voltage between X4/8 and X4/21 (GNDA)

- Use potentiometer R12 to set the voltage to 3,500 V ± 0,005 V

- Indication on actual value display air temperature = 35,0 °C ± 0,1 °C

- Set sensor simulator to 25 °C

- Indication on actual value display air temperature = 25,0 ± 0,2 °C

- Set sensor simulator to 45 °C

- Indication on actual value display air temperature = 45,0 °C ± 0,2 °C

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- Set sensor simulator to 40 °C

- Measure voltage between X4/7 and X4/21 (GNDA)

- Use potentiometer R19 to set the voltage such that it changes from negative value to positive value

- Set sensor simulator to 39,7 °C (or 39,5 °C)

- Negative voltage (- 12 V to - 15,6 V)

- Set sensor simulator to 40,2 °C (or 40,5 °C)

- Positive voltage (+ 12 V to + 15,6 V)

f Calibration of skin temperature amplifier

- Connect sensor simulator Incubator 8000 (79 01 240) to X2

- Connect skin temperature sensor simulator (79 01 236) to sensor simulator Incubator 8000

The sensor simulator Incubator 8000 must have the following basic setting: o Temperature = 35 °C

o Humidity = 70 % o Sensor = 1

The skin temperature sensor simulator must have the following basic setting: o Temperature = 36.0 °C

o Sensor connected/not connected (82 90 680 only)

- Only for 82 90 680: Connect pin X1/29c to GND. GND is e.g. X1/32a or X1/32b.

- Switch incubator on and wait for 35 second self-test

- Measure voltage between X4/17 and X4/21 (GNDA)

- Connect a decade resistor (initial value for 82 00 920 approx. 40 K ohm, for 82 90 680 approx. 5 K ohm) to the soldering tags of R24 and adjust such that the voltage is:

308.6 mV ± 0.5 mV for 82 00 920 or

385.5 mV ± 0.5 mV for 82 90 680

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- Solder the set resistance value to exactly 10 Ohm to the soldering tags of R24 (i f applicable, 2 resi stors connected in series or in parallel)

- Check calibration

- Measure voltage between X4/11 and X4/21 (GNDA)

- Connect a decade resistor (initial value for 82 00 920 approx. 5 K ohm, for 82 90 680 approx. 150 K ohm) to the soldering tags of R31 (82 00 920) or R125 (82 90 680) and adjust such that the voltage is:

2.857 V ± 0.010 V for 82 00 920 or

2.500 V ± 0.010 V for 82 90 680

- Solder the set resistance value to exactly 10 Ohm to the soldering tags of R31 (i f applicable, 2 resi stors connected in series or in parallel)

- Check calibration

- Indication on actual value display skin temperature. = 36,0 °C ± 0,1 °C

- Set skin temperature sensor simulator to 33,2 °C

- Indication on actual value display skin temperature = 33,2 °C ± 0,2 °C

- Set skin temperature sensor simulator to 37,8 °C

- Indication on actual value display skin temperature = 37,8 °C ± 0,2 °C

- Press key "Check 36,0 °C" in skin temperature module

- Indication on actual value display air temperature = 36,0 °C ± 0,1 °C

- Only for 82 90 680: Remove connection between pin X1/29c and GND.

g Test of O2 inputs and O2 comparators

- Connect sensor simulator Incubator 8000 (79 01 240) to X2

- The sensor simulator must have the following basic setting: o Temperature = 35 °C

o Humidity = 70 %

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o Sensor = 1

- Switch on incubator and wait for 35 second self-test

- A potential excess-temperature warning can be switched off by pressing the "Reset Excess-temperature" key

- Set O2-voltages at sensor simulator to 50 mV ± 1 mV each using the two potentiometers. The voltages can be measured at the sensor simulator below the potentiometers.

- Measure voltage between X4/1 and X4/21 (GNDA), Test value = 1,97 V ± 0,05 V

- Measure voltage between X4/5 and X4/21 (GNDA), Test value = 0,72 V ± 0,02 V

- Set both O2-voltages at sensor simulator to 10 mV ± 0,5 mV

- Measure voltage between X4/12 and X4/21 (GNDA), Test value ≤ 0,1 V

- Reduce O2-voltage A to 1 mV

- Test value ≥ 11 V

- Set O2-voltage A to 10 mV ± 0,5 mV

- Test value ≤ 0,1 V

- Set O2-voltage B to 1 mV

- Test value ≥ 11V

- Set O2-voltage B to 10 mV ± 0,5 mV

- Test value ≤ 0,1 V

h Calibration of A/D-converter

- Connect sensor simulator Incubator 8000 (79 01 240) to X2

- The sensor simulator must have the following basic setting:

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o Temperature = R ext. o Humidity = 70 % o Sensor = 1

- Connect a decade resistor for "R ext. Excess-.temperature" at the sensor simulator.

- Switch incubator on and wait for 35 second self-test.

- Call service mode 5, please refer to 6.3 Service-Mode

- Measure voltage between X4/8 and X4/21 (GNDA)

- Set the voltage to 0 mV + 1 mV by means of the decade resistor.

- Use potentiometer R75 to set the zero point of the A/D-converter such that the actual value display just changes from 0,0 °C to 0,1 °C

- Set voltage to 5,000 V ± 0,001 V by means of the decade resistor.

- Connect another decade resistor to the soldering tags of R71 and adjust such that the actual value display just changes from 49,9 °C to 50,0 °C.

- Solder the set resistance to soldering tags of R71 (if applicable, 2 resistors connected in series or parall el)

Check calibration at: o 5,00 V = 50,0 °C ± 0,1 °C o 4,00 V = 40,0 °C ± 0,1 °C o 3,00 V = 30,0 °C ± 0,1 °C o 2,00 V = 20,0 °C ± 0,1 °C o 0,00 V = 0,0 °C ± 0,1 °C

8.2.6.5 N/A

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8.2.6.6 Exchange of PCB Analog in case of repair

Important: When replacing PCB Analog, A/D test channel must be checked and if necessary calibrated, see 8.2.6.4.

Important: In the case of PCBs with the new layout, the PCB Filter for the skin-temperature sensor cannot be connected and is also not necessary.

In case of repair the following spare parts may be used:

Incubators with skin temperature control:

- Only for SW 10.nn / 20.nn: ° PCB Analog 82 00 920 Note: If there is no filter circuit, two jumpers must be soldered onto the PCB Analog with

layout up to 06.95, please refer to the configuration X5 under 8.2.6.1.

- Only for SW 11.nn / 21.nn: ° PCB Analog 82 90 680

Incubators without skin temperature control:

- PCB Analog 82 00 770

8.2.6.7 Repair information and change status

1. Exchange of PCB Analog and Repair Information 3.93 INOP error 19 and 65

Whenever the PCB Analog 82 00 770 / 82 00 920 or the voltage controller for + 15 V or

- 15 V or the PCB Power Pack 82 90 461 is exchanged the A/D test channel must be checked and be calibrated, if necessary, please refer to 8.2.6.4.

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2. PCB Analog 82 00 920 (incl. skin temperature) without PCB filter circuit 4.93

As of now all incubator with skin temperature control are manufactured without PCB Filter Circuit. In case of repair this filter circuit may be dismounted from all units, for this solder jumpers from X5/1 to X5/4 and from X5/2 to X5/5 on the soldering side of the PCB Analog.

3. New PCB Analog 82 90 680, new layout for PCB Analog 82 00 770/82 00 920 4.93

These PCBs have been revised (new layout without relays) and are available in 3 versions. Important: The order no. on the PCB describes the function. The new PCB Analog 82 90 680 has a larger measuring range for skin temperature than the PCB Analog 82 00 920 and only functions in conjunction with SW 11.nn or 21.nn.

Incubators without skin-temperature control: ° PCB Analog 82 00 770 Incubators with skin-temperature control: ° Only for 10.nn/20.nn: PCB Analog 82 00 920 ° Only for SW 11.nn or 21.nn: PCB Analog 82 90 680

Important: The filter circuit can no longer be connected to the PCB Analog 82 00 720/82 90 680 with the new layout. When performing repairs, the filter circuit is to be removed.

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4. Change of skin temperature deviation alarm from 0.5 to 1.0 ºC for all US versions Incubator 8000 IC with ThermoMonitoring,

Reason: All US versions Incubator 8000 IC with ThermoMonitoring for the USA

and Canada will be delivered with a skin temperature deviation alarm limit of 1.0 ºC according the US version of the Operating Instructions of the Incubator 8000 IC Software Version 21.n.

Solution: For thi s change the following modification is necessary:

1. Place a sticker " ± 1 ºC " with the order no. 2M 21 921 on the keypad of the skin temperature control module directly over the " ± 0.5 ºC " label.

2. Change the jumper configuration X5 on the Analog PCB 82 90 680 from:

1 1

8 8

0.5 ºC to 1.0 ºC

Devices affected: All Incubators 8000 IC as of software version 21.n in the USA and Canada.

Additional info: Pl ease order the sticker 2M 21 921 " ± 1 ºC " always in addition to the spare parts keypad or electronics module.

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8.2.7 PCB Power Pack

8.2.7.0 Table of Contents

8.2.7.1 Information about Printed Circuit Boards used

8.2.7.2 N/A

8.2.7.3 PCB Power Pack 82 90 461 (for Inc. 8000 SC/IC/NC)

8.2.7.4 Testing

8.2.7.5 Replacement in the event of Repair

8.2.7.6 Repair Information and Change Status

8.2.7.1 Information about Printed Circuit Boards

PCB Power pack 82 90 461 (for Inc. 8000 SC/IC/NC)

With this PCB Power Pack 82 90 461 only the voltage regulator for + 5 V is located on the side plate of the electronics module. This PCB Power Pack functions only with the PCB Motherboard 82 90 471 for Inc. 8000 SC/IC/NC.

8.2.7.2 N/A

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8.2.7.3 PCB Power pack 82 90 461 (of Inc. 8000 SC/IC/NC)

Layout PCB Power Pack 82 90 461 without fan:

82 90 461

+++

C10 C9 C7

- +

V26V27

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Layout PCB Power Pack 82 90 461 with fan available as of 1993:

82 90 461

C10

Lüfter/Fan

- +

V26V27

Configuration:

Position Component or Function

X1 Connection to Motherboard B1 Storage battery 83 01 856, to be renewed once

a year H1 Audible signal generator 83 01 708 V26 Voltage regulator + 15 V 18 21 466 V27 Voltage regulator - 15 V 18 21 423 Fan (as of approx. 1993) Miniature fan1.2 W 18 33 863 S1 (only on PCB 82 90 461 with fan) must be kept closed during operation X2 Jumper location for audible alarm silence, must

never

X3 Test points for voltage supply

+ 5 V, + 15 V, GND and - 15 V

be short-circuited during operati on!

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Voltage regulator

The voltage regulators for + 15 V and - 15 V are located on the printed circuit board, the + 5 V -regulator 83 06 259 is located on the side plate of the electronics module, connected on the PCB Motherboard, refer also to 8.2.8.3:

X12

GND + 30 V

- 15 V + 15 V + 5 V

X21

Motherboard Side plate with voltage regulator

Adjustment:

not required

8.2.7.4 Testing

mit LP Netzteil / with PCB Power Pack 82 90 461

X21

1 5 3

83 06 259

(+ 5 V)

X10

The following functions are available on the PCB Power Pack:

- Rectification of the a.c. voltages and stabilization of the d.c. voltages

- Storage battery charge circuit

- Hooter and hooter control

- Control of powerfail LED

- Generation of powerfail signal

- Fan for cooling of electronics module on PCB Power Pack 82 90 461 as of 1993

Testing Supply Voltages:

- PCB Power Pack 82 90 461:

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Measurement is carried out on the printed circuit board at test connector X3 X3/1 V = + 5 V +/- 0.2 V X3/2 GND X3/3 V = + 15 V +/- 0.6 V X3/4 V = - 15 V +/- 0.6 V Note: For testing of the a.c. voltage supply 8.1.8.3

Testing Storage Battery Charge Circuit

Remove storage battery and measure current between connections of storage battery mount:

Printed circuit board without fan: Current = 9 to 19 mA Printed circuit board with fan: Current = 0,6 to 1,3 mA Mount storage battery.

Testing Powerfail Recognition, Control of Powerfail LED and Hooter in the event of Powerfail

- Device is switched on and self-test is completed.

- Switch on all modules available.

- Disconnect Incubator from power supply.

- Testing: Hooter and powerfail LED on PCB Display Air Temperature on

- Connect device to power supply again.

- Testing: The device should continue working with all modules (as adjusted previously). If not, the time keeper RAM on PCB CPU might be defective.

Control of Hooter

During operation press the button "Check lamps": hooter ON.

Fan (if fitted)

The fan is no longer necessary, refer to service bulletin.

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8.2.7.5 Exchange in case of repair

The following spare parts can be used in case of repair:

Electronics module with PCB Motherboard 82 90 471 (of Inc. 8000 SC/IC/NC)

- PCB Power Pack 82 90 461

- Voltage regulator + 15 V 18 21 466

- Voltage regulator - 15 V 18 21 423

- Voltage regulator + 5 V 83 06 259

- Storage battery (must be renewed once a year) 83 01 856

Note: Observe repair information and change status 8.2.7.6!

8.2.7.6 Repair Information and Change Status

1. Replacement of PCB Power Pack 82 90 461 or voltage 3.93 regulators for + 15 V or - 15 V

When replacing the above mentioned components it is necessary to check the A/D test channel on the PCB Analog and to adjust it, if applicable, refer to 8.2.6.4.

2. PCB Power Pack 82 90461 with Fan or possibility for connect a Fan

Prior to initia l use of this printed circuit board close the soldering switch S1 otherwise the storage battery will not be charged.

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8.2.8 PCB Motherboard

8.2.8.0 Table of Contents

8.2.8.1 N/A

8.2.8.2 N/A

8.2.8.3 PCB Motherboard 82 90 471 (of Inc. 8000 SC/IC/NC)

8.2.8.4 Testing

8.2.8.5 Exchange of PCB Motherboard in Case of Repair

8.2.8.6 Repair information and Change Status

8.2.8.1 N/A

8.2.8.2 N/A

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8.2.8.3 PCB Motherboard 82 90 471

Layout:

X11

X12

GND + 30 V

- 15 V + 15 V + 5 V

+ +

82 90 471

X2 X1

C14 C13

X21

mit LP Netzteil / with PCB Power Pack 82 00 930

1 3

CH 18 946 (2N3055)

4 5 6 8 7 9

18 21 466 (+ 15 V)

18 21 423 (- 15 V)

mit LP Netzteil / with PCB Power Pack 82 90 461

X21

1 5 3

83 06 259 (+ 5 V)

X10

The PCB Motherboard 82 90 471 functions in conjunction with the PCB Power Pack 82 90 461 (of Inc. 8000 SC/IC/NC, only the + 5V - voltage regulator on the side plate)

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Configuration:

Position Component or Function

X1 Connection to PCB Power Pack X2 Connection to PCB Analog X3 Connection to PCB CPU X4 Connection to PCB Controller (RS232),

optional for Inc. 8000 SC/IC X9 Connection to Unit X10 Connection to PCB Switch X11 Connection to auxiliary fan 2M 20 021 X12 Test points for voltage supply:

X12/1 = GND

X12/2 = + 30 V (non-stabilized, load-dependent)

X12/3 = not available

X12/4 = - 15 V

X12/5 = + 15 V

X12,6 = + 5 V X21 (not available on

Connection voltage regulator + 5 V 83 06 259 all printed circuit boards) D1, D2 PIA 6821 18 23 361 K1 Bipolar relay 18 12 653 C13 / C14

Capacitor 1 µF 18 01 309 (only necessary on PCB

Power Pack 82 00 930 of Inc. 8000, not fitted ex

works)

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Position Component or Function

Solder tag 1 to 9

mit LP Netzteil / with PCB Power Pack 82 00 930

1 3

CH 18 946 (2N3055)

mit LP Netzteil / with PCB Power Pack 82 90 461

4 5 6 8 7 9

18 21 466 (+ 15 V)

18 21 423 (- 15 V)

with PCB Power Pack 82 90 461 (of Inc. 8000 SC/IC), if X21 is not available:

- Connection Voltage regulator + 5 V 83 06 259 1 = white 3 = red 5 = blue

X21

1 5 3

83 06 259 (+ 5 V)

Adjustment:

not required

8.2.8.4 Testing

Testing of the PCB Motherboard is carried out by the system software. Exception: control of the auxiliary fan. The auxiliary fan is always switched on when the air heating is off.

8.2.8.5 Exchange in Case of Repair

The following spare parts can be used in case of repair:

- PCB Motherboard 82 90 471

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8.2.9 PCB Switch

The PCB Switch 82 00 880 comprises 3 switches: S1.1 Switching on of the device via mains auxiliary transformer and the mains

closing relay on the PCB Unit

S1.1 / S 1.2 Generation of powerfail alarm. During operation S1.3 is monitored via the PIA

D2 on the PCB Motherboard (Fault 66)

Possible faults:

Fault possible cause

Device cannot be switched on PCB Switch or PCB Unit defective,

testing the Unit, refer to 8.1.8.3 no visual and audibl e powerfail alarm

Failure 66 - PCB Switch defective

- Storage battery on PCB Power Pack discharged

- PCB Switch defective

- PCB Power Pack defective

- LED on the PCB Display Air Temperature defective (only if audible powerfail alarm is available)

- Soldering switch S1 on PCB Power Pack 82 90 461 "with Fan" open, refer to 8.2.7.3

- PIA D2 on the PCB Motherboard defective

Exchange in case of repair:

- PCB Switch 82 00 880

Repair information and change status:

no entries

8.2.10 N/A

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8.2.11 PCB Controller (RS232) 82 90 581

8.2.11.0 Contents

8.2.11.1 Use

8.2.11.2 Layout plan, configuration and test points

8.2.11.3 Function test

8.2.11.4 Exchange in case of repair

8.2.11.5 Repairinformation Software

8.2.11.6 Retrofitting

8.2.11.7 Repair information and modification states

8.2.11.1 Use

The PCB Controller is a communication board with Medibus log via a RS232 interface and is only intended for Incubator 8000 SC/IC/NC. The PCB Controller monitors the incubator bus, the data read in is processed and made available to the interface. The i nterface is electrically isolated from the incubator electronics.

Conditions for the instal lation into the incubator:

- Cutout for interface (socket) on the back of the unit next to the mains connection available.

- PCB Motherboard 82 90 471 has a modification state ≥ 03. From serial NO. ARFA (Jan. 1993) the Incubators 8000 SC/IC/NC are designed for

installation of this interface.

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8.2.11.2 Layout plan, configuration and test points

Layout plan:

Controller (RS232) 82 90 581

X9 X8

D19 D17 D16 D18

31 32

LED V8

LED V5

Component configuration:

Position Component

D16 EPROM A (odd) 82 90 595 from Software 1.00

Babylink 82 90 599

D17 EPROM B (even) 82 90 594 from Software 1.00

Babylink 82 90 599

Equipment of jumper fields with jumper 18 14 608:

Not intended for operation

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Test points:

Test point Function

LED V5 (red) lights up during normal operation LED V8 (yellow) Flashes with 1Hz at short-circuit between Pin 2 and

Pin 3 at the connection socket on the back of the device (or Pin 3 and Pin 5 of X7) and flashes during normal operation of the interface

X7 interface socket Loop-test between Pin 3 and 5

8.2.11.3 Function Test

The function test is performed in operable condition of the PCB Controller with the flap under the electronics module hinged down.

- Incubator switch-on: Test: LED V5 (red) and LED V8 (yellow) on PCB Controller light up

continuously during the i n cubator self-test (only bars on the actual value displays).

- Incubator self-test completed: Test: LED V5 (red) lights up, LED V8 (yellow) off.

- Afterwards produce a short-circuit at the connection socket for the interface on the device back panel between pin 2 and 3 (loop-test):

Test: LED V5 (red) lights up), LED V8 (yellow ) flashes at 1Hz.

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Possible errors:

Error Possible causes Remedy

LED V5 (red) off Processor error on PCB

Replace PCB Controller

Controller LED V8 (yellow) off during loop test, LED V5

- transmission error on

PCB Controller

- Replace PCB Controller

(red) lights up

- cable harness from

PCB Controller to interface

socket defective

- Perform loop test with short circuit at plug-in connector X7 of PCB Controller between pin 3 and pin 5:

If LED V8 (yellow) flashes at 1 Hz there is an error at the cable harness to the interface socket, otherwise on the PCB Controller

8.2.11.4 Exchange in case of repair

The following spare parts can be used for exchange of the complete PCB respective the cable harness with socket:

- PCB Controller 82 90 581

- Software 1.00 BabyLink see 8.2.11.5

- Cable harness RS232 Incubator 82 90 568

(with sockets)

8.2.11.5 Repair Information Software

For the time being the following software-version is actual:

- Software 1.00 Babylink 82 90 599

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8.2.11.6 R etr ofitting

The interface can be install ed in all Incubators SC/IC/NC from serial No. ARFA (Jan. 1993). Installation conditions:

- Cutout for interface (socket) available on the device back panel next to the mains input.

- PCB Motherboard 82 90 471 has a modification state ≥ 03.

The following is required for installation:

- Retrofit kit BabyLink Incubator 82 90 607

8.2.11.6 Repair information and modification states

up to now no entries

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8.3 Climatic sensor

8.3.0 Table of Contents

8.3.1 Information on Climatic Sensors used

8.3.2 Climatic Sensor 82 90 380 and 2M 21 688

8.3.3 Testing and Adjustment

8.3.4 Replacement and Repair

8.3.5 Repair and Change Status

8.3.1 Information on Climatic Sensors

The following is a list of current climatic sensors where the humidity measurement can be calibrated and the humidity sensor replaced:

Software version For units Climatic sensor

20.nn (old) w/o skin-temperature meas. 82 90 380 with skin temperature

connection

20.nn (old) with skin-temperature meas. 82 90 380 with skin temperature

connection

21.nn (new) w/o skin-temperature meas. Currently 2 possibilities

2M 21 688 new, without skin temperature connection

In emergencies the old climatic sensor 82 90 380 can also be used for units without skin-temperature measurement.

21.nn (new) with skin-temperature meas. 2M 21 688 new, without skin

temperature connection

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Features: 82 90 380 = Climatic sensor for 2 O2 sensors and connection for skin-temperature

sensor. This sensor is required for units with SW 20.nn with skin temperature.

2M 21 688 = Climatic sensor has no connection for skin-temperature sensor; otherwise

identical to 82 90 380. Thi s sensor cannot be used for units with SW 20.nn with skin temperature.

8.3.2 Climatic Sensor 82 90 380 and 2M 21 688

Layout (fig. shows 82 90 380):

R1 R2

Position Component or Function

1 O2-Sensor B mount over PCB 68 50 638 2 O2-Sensor A mount over PCB 68 60 638 3 Electronics of humidity measurement 4 Temperature sensors 82 00 486 5 Humidity sensor 82 90 393 with protective cap 82 90 392 6 Socket 82 00 608 for skin temperature sensor (only for 82 90

380)

7 Microswitch 82 00 497 for position identification

In case of repair, all components of the climatic sensor 82 90 380 / 2M 21 688, except the electronics of the humidity measurement, can be replaced. The humidity measurement can be

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adjusted with potentiometer R2 (zero-point). The humidity sensor 82 90 393 may be cleaned in distill ed water.

Note: The climatic sensors 82 00 910 to 82 00 913 are identical, except for position 3 "Electronics of the Humidity Measurement" and position 5 "Humidity Sensor". In the event of a defective humidity measurement these climatic sensors 82 90 380 have to be replaced.

8.3.3 Testing and Adjustment

8.3.3.1 Temperature Measurement

The NTCs of the temperature measurement are normally not subject to drift. Both temperature values can be scanned in the service mode (refer to 6.3) whereby the tolerances of the PCB Analog are included. The temperature values in the service mode in the working range of the Incubator must not differ by more than 0.3 °C. In the event of deviations, first check the measurement of the PCB Analog (refer to 8.2.6).

The resistance values of the NTCs can be checked at the connection socket of the climatic sensor between Pin 1 and 2 (Air Temp. Sensor) and between Pin 3 and 18 (Excess Temp. Sensor).

Temperature in °C Resistance in Ohm

20 6246.0 21 5970.8 22 5709.4 23 5460.9 24 5224.7 25 5000.0 26 4786.1 27 4582.5 28 4388.8 29 4204.4 30 4028.7 31 3861.2 32 3701.6 33 3549.6 34 3404.6 35 3266.3 36 3134.4 37 3008.6 38 2888.5 39 2773.9

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8.3.3.2 Microswitch

Both microswitches can be checked in the service mode (refer to 6.3). In the event of problems with inexplicable sensor alarms without storage of faults it is

necessary to check the mount pin of the hinge 82 00 489. The dimension 9.3 + 0.1 mm must be observed.

+ 0,1

9,3

8.3.3.3 O2 Sensors

Both O2 sensors can be checked in the service mode (refer to 6.3). In addition, after adjustment in the service mode, the target value must be set to maximum to allow identification of non-linearity in measurement with high O2 values. In the event of measurement deviations between both sensors, a sensor alarm is generated and stored in the fault list.

8.3.3.4 Humidity Measurement

Test equipment required:

- Temperature measuring device compl. 79 01 148

- Humidity and temperature sensor 79 01 476

- Adjustment set humidity sensor 79 01 477 The accuracy of the humidity and temperature sensor must be ensured by regular checks

(every 6 months).

Testing and Adjustment:

- The Incubator is ready for use and switched off

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- Unscrew cover from climatic sensor

- Connect ready-for-use climatic sensor without cover to Incubator

- Using adhesive tape seal air gap resulting from removal of the cover

- Mount humidity sensor at a maximum distance of 60 mm from the humidity sensor. To

do so, position the cable of the humidity sensor over the holder of the side double wall and attach the humidity sensor to the black disc of the climatic sensor(e.g. using wire or adhesive tape).

- Switch Incubator on

- Adjust the following values on the Incubator:

o Air temperature = 36.0 °C o Humidity = 70 %

- Allow target values to stabilize for 30 min before testing and adjusting. If the measured

value on the reference measuring device differs by more than 10% r.h. from the reading on the Incubator the target value on the Incubator has to be adjusted accordingly until a humidity of 60 to 80% is indicated on the reference measuring device.

- Using potentiometer R2 adjust reading on Incubator to value indicated on the reference

measuring device

- Secure potentiometer R2 using locking compound

- Assemble climatic sensor ready for use

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8.3.4 Replacement and Repair

Climatic sensor 82 90 380 / 2M 21 688:

With these climatic sensors, all parts can be replaced with the exception of the humidity measurement electronics (see spare parts list). The climatic sensor assembly is to be renewed if the electronics are defective. After replacing the humidity sensor, the humidity measurement is to be checked and calibrated i f necessary.

Software version For units Climatic sensor

20.nn (old) w/o skin-temperature meas. - 82 90 380 (as before, for 2 O2

sensors)

- 2M 21 688 (new), this sensor has no skin-temperature connection

20.nn (old) with skin-temperature meas. 82 90 380 (as before, for 2 O2 sensors).

The skin-temperature sensor connection is required for this climatic sensor.

21.nn (new) w/o skin-temperature meas. Currently 2 possibilities

- 2M 21 688 (new), this sensor has no skin-temperature connection

- In emergencies the old climatic sensor 82 90 380 can also be used for units without skin-temperature measurement.

21.nn (new) with skin-temperature meas. - 2M 21 688 (new) without skin

temperature connection

Features: 82 90 380 = Climatic sensor for 2 O2 sensors and connection for skin-temperature

sensor. This sensor is required for units with SW 20.nn with skin temperature.

2M 21 688 = Climatic has no connection for skin-temperature sensor; otherwise

identical to 82 90 380. Thi s sensor cannot be used for units with SW 20.nn with skin temperature.

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8.3.5 Repair Information and Change Status

8.3.5.1 Incubator 8000 IC with SW 21.nn, new climatic sensor, new

connection location for skin-temperature measurement 06.95

The new climatic sensor 2M 21 688 features the following modifications as opposed to 82 90 380:

- The skin-temperature sensors (1 or 2) are connected as of SW 21.nn to the left side of

the basic housing. Use can only be made of the familiar disposable sensors 2M 20 737 as the connector is different. The adapter 2M 20 736 which used to be required for these disposable sensors is no l onger needed.

- Pay attention to Section 8.3.5 when renewing complete climatic sensor.

- Important: Use is not to be made of the climatic sensor 82 90 380 on units with SW

21.nn with skin-temperature measurement. In this case there is a danger of two skintemperature sensors being connected in parallel.

6141.22x Incubator 8000 SC/ IC/NC Repair Information 11.99 Page 96 of 96

Drager 8000 SC, 8000 NC User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

8.1 Unit

8.1.0 Table of Contents

8.1.1 Information on Unit 2M 20 276 / 2M 20 615 (of Inc. 8000 SC/IC/NC)

8.1.2 PCB Unit and Fuses

8.1.3 Air Heating with Thermal Release

8.1.4 Boiler with Water heating and Thermostatic Switch

8.1.5 Fan Motor

8.1.6 Mains Transformer

8.1.7 Semiconductor Relay

8.1.8 Test of Heating Unit (Complete).

8.1.8.0 Contents

8.1.8.1 Test equipment required

8.1.8.2 Preparation of test

8.1.8.3 Test Set-up for testing a Unit in the Field

8.1.8.4 Test of fan monitoring

8.1.8.5 Test of relay K4

8.1.8.6 Test of relay K3

8.1.8.7 Test of relay K2, air heating and feedback air heating

8.1.8.8 Test of relay K2, water heating and thermostatic switch

8.1.8.9 Test of heating unit in the incubator

8.1.8.10 Testing of valves

8.1.9 Voltage Selection

8.1.10 Replacement of Unit in the event of Repair

8.1.11 Repair Information and Change Status

8.1.11.1 Boiler for Inc. 8000 SC/IC in Unit 2M 19 940 for Inc. 8000

8.2 Electronics module

8.2.0 Table of Contents

8.2.1 Keyboards

8.2.1.0 Table of Contents

8.2.1.1 Information about keyboards used

8.2.1.2 N/A

8.1.1.4 Test

8.2.1.5 Exchange in case of repair

8.2.1.6 Repair information and change status

8.2.2 PCB Display Air Temperature

8.2.3 PCB Display (of options), PCB Display Skin (as of SW 11 and 21)

8.2.4 PCB Display Humidity (only Inc. 8000 SC/NC)

8.2.5 PCB CPU

8.2.6 PCB Analog with PCB Filter

8.2.7 PCB Power Pack

8.2.8 PCB Motherboard

8.2.9 PCB Switch

8.2.10 N/A

8.2.11 PCB Controller (RS232) 82 90 581

8.3 Climatic sensor

8.3.0 Table of Contents

8.3.1 Information on Climatic Sensors

8.3.2 Climatic Sensor 82 90 380 and 2M 21 688

8.3.3 Testing and Adjustment

8.3.4 Replacement and Repair

8.3.5 Repair Information and Change Status