ASTOTHERM plus Models AP220 - AP220S and AP260 - AP260S Service Instructions Rev 07 June 2013

This Service Instructions is only valid together with the Instructions for Use of the ASTOTHERM PLUS.

Manufacturer: STIHLER ELECTRONIC GmbH Julius-Hoelder-Strasse 36 70597 Stuttgart Tel. +49 (0) 711-720670 Fax +49 (0) 711-7206757 www.stihlerelectronic.de E-Mail: [email protected]

1 Technical description

ASTOTHERM PLUS Reparaturanleitung

Table of Contents 1 TECHNICAL DESCRIPTION ... 5 1.1 1.2 1.3 1.4 1.5 1.6

General ...5 Structure ...6 Description of the electronics...7 Technical Data (new devices)...9 Terminal connecting plan ...11 ASTOTHERM PLUS spare parts ...12

2 GENERAL GUIDELINES AND PRINCIPLES FOR THE REPAIR OF ASTOTHERM PLUS . 19 2.1 2.2 2.3 2.4 2.5

Technical Service and Ordering Spare Parts ...19 Guarantee repairs ...19 Liability ...19 Important instructions ...20 Procedure for ASTOTHERM PLUS repairs ...21

3 CLEANING AND DISINFECTING ... 22 4 FUNCTIONAL CHECK ... 22 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9

Check display devices ...23 Check heating-up time ...23 Check display temperature fluctuation ...23 Check temperature in control state ...24 Test temperature overshoot on heating ...25 Alarm test functions ...25 Checking safety cut-offs ...26 Measuring resistance of ASTOLINE active insulation ...27 Checking of ASTOLINE electronics ...27

5 TROUBLESHOOTING... 28 6 DISMANTLING ... 30 6.1 6.2 6.3 6.4 6.5

Dismantling for troubleshooting in assemblies ...31 Dismantling bottom part assembly ...32 Dismantling the top part assembly ...33 Dismantling the heat exchanger cylinder assembly ...33 Dismantling the device fixing assembly ...34

7 ASSEMBLING THE DEVICE... 35 7.1 7.2 7.3 7.4 7.5

Assembling the device fixing assembly ...35 Assembling the heat exchanger assembly ...35 Assembly of the top part assembly ...37 Assembling the bottom part assembly...39 Final assembly of assemblies ...41

8 ELECTRICAL SAFETY TEST ... 43 9 CONTINUOUS DUTY TEST ... 44 10 RETURN AND/OR DISPOSAL OF DEVICES OR ASSEMBLIES ... 44 11 APPENDIX ... 45

3

ASTOTHERM PLUS Service Instrunctions

1 Technical description

NOTICE

The description for dismantling covers every possible assembly group and step. If a defective component or an assembly group are to be replaced; only the steps necessary for this should be performed. STIHLER ELECTRONIC GmbH hereby expressly states, that the repairing organisation is fully responsible for the device after the repair. After each repairing or maintenance procedure the required tests (see Instructions for Use/Repairing Manual) have to be carried through with calibrated measuring and test equipment (IEC/EN 62353 Medical Electrical Equipment – recurrent test and test after repair of medical electrical equipment). All repairs and maintenance work may only be performed by trained and qualified personnel. The provision of technical documentation or spare parts does not constitute authorization from the manufacturer to open or repair the device.

Test results which must be achieved to ensure safe operation are outlined by a frame.

4

1 Technical description

ASTOTHERM PLUS Reparaturanleitung

1 Technical description 1.1

General

Applications The ASTOTHERM PLUS allows fluids supplied to patients to be heated, either to avoid or reduce hypothermia or to increase well-being. Applications include transfusions, infusions, dialysis, haemofiltration and apheresis. The warmer works in accordance with the principle of flow heating, i.e. the heat is transmitted by the heat exchanger via the sterile infusion extension to the fluid flowing within it. The patented heat protection sleeve insulates the heat exchanger cylinder and the infusion extension against the effects of ambient cold (e.g. air-conditioning systems) and thus increases the degree of efficiency.

Overheating is reliably prevented by the following measures: - 2 separate temperature sensors for temperature control, temperature display and excessive temperature cut-off, - an additional independent temperature sensor for another excessive temperature cut-off, - optical and acoustic alarms.

On models 220(S) and 260(S), the temperature of the ASTOTHERM PLUS can be set alternatively at three fixed temperature steps up to 43°C. On the model 200(S), the temperature is fixed at 40°C. The temperature display always shows the current mean temperature of the heat exchanger. Heating of the medium is based on flow speed and inlet temperature. For an optimum heat transfer we recommend the original infusion extension ASTOTUBE. (see outlet temperature diagrams in the operating instructions). If on the models 220(S) and 260(S) the displayed temperature of the heat exchanger drops by more than 4°C below the selected set temperature, the inadequate temperature alarm is activated. On the model 200(S), the inadequate temperature alarm is fixed at 32°C.

5

ASTOTHERM PLUS Service Instrunctions

1 Technical description

There are ASTOTHERM PLUS in the following variations Order no

Heat exchanger groove

Temperature

Power consumption

AP 200* AP 200 S*

4 mm 4 mm

250 W 250 W

AP 220

4 mm

450 W

no

AP 220 S

4 mm

450 W

yes

AP 260

6,8 mm

450 W

no

AP 260 S

6,8 mm

40°C (fixed) 40°C (fixed) 37°C, 39°C, 41°C (selectable) or 39°C, 41°C, 43°C (selectable) 37°C, 39°C, 41°C (selectable) or 39°C, 41°C, 43°C (selectable) 37°C, 39°C, 41°C (selectable) or 39°C, 41°C, 43°C (selectable) 37°C, 39°C, 41°C (selectable) or 39°C, 41°C, 43°C (selectable)

ASTOLINE actively-heated insulation up to the patient no yes

450 W

yes

*no more in the actual sales program

Description of ASTOLINE (optional accessory) Using the active ASTOLINE insulation, it is possible to limit cooling of the fluid en route from the warmer to the patient. The heated flexible silicone body surrounds the infusion extension over a distance of up to 130 cm, ensuring that the part of the infusion line which would otherwise be exposed to the cool ambient air is both insulated and heated. Its special shape also enables infusions and transfusions to be observed all the way to the patient.

1.2

Structure

In the top part of the housing underneath the front panel is the board with the components for electronic control, the buttons for operation and the associated LEDs and LCD for actual and set point temperature. The board is operated exclusively with low-voltage power. Depending on model type, the heat exchanger cylinder has either 11 (models 200(S) and 220(S)) or 9 windings (model 260(S)). Approximately 40 cm of infusion extension are required for one winding. The heating system is attached to the inner surface of the aluminium heat exchanger cylinder. The three temperature sensors for temperature control, display and safety cut-offs are located in the end faces of the cylinder. The transformer board is inserted in the heat exchanger cylinder. On this board are the fuses, the connections for the mains cable and the heating and the heating control LED. NOTICE This board is live (100 VAC to 240 VAC)! The transformer board is secured in the heat exchanger cylinder by the intermediate ring and the fixing strip. A universal mounting is fitted to the bottom part of the housing, allowing the device to be attached to an infusion stand (dia. 12 mm to dia. 35 mm) or to a standard medical rail. Warmers with ASTOLINE active insulation (models 200S, 220S and 260S) have the board and the device socket for the ASTOLINE fitted in the bottom part.

6

1 Technical description

1.3

ASTOTHERM PLUS Reparaturanleitung

Description of the electronics

Temperature control: The temperature at the heat exchanger cylinder is controlled by a control unit consisting of a microprocessor, an A/D converter and a triac unit. The actual temperature is determined by two NTC sensors at the inlet (NTC1) and outlet (NTC2) (cf. Fig. 1, Block Diagram). Temperature display: The actual temperature is displayed in the LCD as a mean value. At a temperature below 15°C, only three bars at the bottom are shown and above 50°C, only three bars at the top. The three small displays on the 220(S) and 260(S) models show the user-selectable set point temperatures. The frame outlines the current selection according to which the temperature of the heat exchanger is being controlled. On the model 200(S), the temperature of the heat exchanger is fixed. Safety cut-off at warmer inlet (heat exchanger rear side): The safety cut-off at the warmer inlet is a device independent of the microcontroller. It checks whether NTC1 is hotter than the alarm limit (temperature value of second excessive temperature cut-off, see Section 1.4) In the event of an alarm, the safety cut-off switches off relay K1. This interrupts the heating current and the power supply for K1 and K2. Drop-out of the relay is indicated by the flashing alarm LED and the alarm tone. If the heat exchanger cylinder cools to below the alarm limit, the device can be restarted manually. NTC1 cannot be affected by any conceivable defect of the safety cut-off at the warmer outlet or of NTC3. Safety cut-off at warmer outlet (heat exchanger front side): The safety cut-off at the warmer outlet works according to the same principle as the safety cut-off at the inlet, though it checks NTC3 (temperature value of the first excessive temperature cut-off, see Section 1.4) located at the outlet and controls relay K2. NTC3 cannot be affected by any conceivable defect of the control system, the safety cut-off at the warmer inlet, NTC1 or NTC2. The drop-out of the relay is indicated by the flashing alarm LED and the alarm tone. If the heat exchanger cylinder cools to below the alarm limit, the device can be re-started manually. Test devices: Pressing the Start button checks whether relays K1 and K2 reliably cut power if so required. A fault signal is sent to the safety cut-off at the warmer inlet followed by the safety cut-off at the warmer outlet. The safety cut-offs react with an audible click. Following a successful test, the device switches on the heating. With alarm tests 1 and 2, the safety cut-offs at the warmer inlet and outlet can be tested individually (cf. operating instructions, Section “PERIODICALLY RECURRING TEST MEASURES” or “RECURRENT TESTS”). EEPROM memory: An EEPROM is provided to store constants and operating states. Calibration data are also stored here. Watchdog device: The microprocessor is continuously monitored by a so-called watchdog circuit. If the microprocessor becomes defective due to a malfunction, the watchdog circuit emits a signal and the device goes to stand-by mode. Mains power failure bridging: This is used to restart the device automatically in the previously selected state in the event of a brief power failure. Automatic start is effected in the event of a power failure lasting up to 5 seconds, 30 seconds at most. ASTOLINE active insulation: ASTOLINE is an auxiliary heating system controlled by current and voltage. If voltage or current are above or below the permissible limit values, an alarm is activated. The board is operated with lowvoltage power.

7

ASTOTHERM PLUS Service Instrunctions

1 Technical description

Safety cut-off at warmer outlet Heater

Safety cut-off at warmer inlet

Watch-Dog

Power supply electronic

Fig. 1 Electronics block diagram

8

1 Technical description

1.4

ASTOTHERM PLUS Reparaturanleitung

Technical Data (new devices)

1.4.1 ASTOTHERM PLUS 200 and 200S

ASTOTHERM PLUS 200(S)

AP200(S) EU AP200(S) UK AP200(S) CH AP200(S) DK

AP200(S) NA

230-240 VAC ±10% 47-63 Hz

100-115 VAC ±10% 47-63 Hz

Line voltage Power supply cord

SCHUKO plug H 05 VVF 3x0.75

BS - plug 13A Fuse H 05 VVF 3x1

Schweiz plug H 05 VVF 3x0,75

DK - plug DK2-Ia, DK25a H 05 VVF 3x0.75

Hospital Grade Plug NEMA 5-15P SJO, SJT 18/3

Impedance of protective earth

≤ 0.15 Ohm

≤ 0.1 Ohm

Insulation resistance

≥ 100 MOhm

≥ 100 MOhm

AC leakage current

< 0.3 mA

Primary Fuses (F1, F2)

T4AH 250 V (5 x 20 mm)

Secondary Fuses (F3, F4)

T0630AL 250 V (TRs Bauform) 250 W

Power input Selfstart after mains power failure Protection class Protection level (IEC 601-1) Humidity protection Classification as per appendix IX UMDNS Code Dimensions height width depth Weight

5 to 30 sec. I defibrillation-proof applied part of type B IPX4 IIb (Rule 9) 10-447 145 mm 135 mm 295 mm 2.9 kg

Warm- up time

approx. 1 min (20 °C to 35 °C)

Operating mode

continuous operation

Permissible ambient temperature for operation for storage

+16 °C to +32 °C -20 °C to +60 °C

Ambient operating humidity

10 % to 90 % not condensing

Operation temperature (TSetpoint)

40 °C (± 0.5 °C), fixed setting

1. safety cut-off (essential performance)

42.5 °C (± 0.5 °C)

2. safety cut-off (essential performance)

43.5 °C (± 0.5 °C)

heater bimetal cut-off inadequate temperature alarm

65 °C (± 5 °C) below 32 °C

9

ASTOTHERM PLUS Service Instrunctions

1 Technical description

1.4.2 ASTOTHERM PLUS 220, 220S and 260, 260S (new devices) ASTOTHERM PLUS 220(S) ASTOTHERM PLUS 260(S)

AP220(S) EU AP260(S) EU

Line voltage Power supply cord

AP220(S) UK AP260(S) UK

AP220(S) CH AP220(S) DK AP260(S) CH AP260(S) DK

230-240 VAC ±10% 47-63 Hz SCHUKOplug H 05 VVF 3x0.75

BS - plug 13A Fuse H 05 VVF 3x1

AP220(S) NA AP260(S) NA 100-115 VAC ±10% 47-63 Hz

Swiss plug H 05 VVF 3x0.75

DK-plug DK2-Ia, DK2-5a H 05 VVF 3x0.75

Hospital Grade Plug NEMA 5-15P SJO, SJT 18/3

Impedance of protective earth

≤ 0.15 Ohm

≤ 0.1 Ohm

Insulation resistance

≥ 100 MOhm

≥ 100 MOhm

AC leakage current

< 0.3 mA

Primary Fuses (F1, F2)

T4AH 250 V (5 x 20 mm)

Secondary Fuses (F3, F4)

T0630AL 250 V (TRs Bauform)

Power input Selfstart after mains power failure Protection class Protection level (IEC 601-1) Humidity protection Classification as per appendix IX UMDNS Code Dimensions height width depth Weight

450 W 5 to 30 sec. I defibrillation-proof applied part of type B IPX4 IIb (Rule 9) 10-447 145 mm 135 mm 295 mm 2.9 kg

Warm- up time

approx. 1 min (20 °C to 35 °C)

Operating mode

continuous operation

Permissible ambient temperature for operation for storage Ambient operating humidity

+16 °C to +32 °C -20 °C to +60 °C

1. safety cut-off (essential performance)

10 % to 90 % not condensing 37 °C / 39 °C / 41 °C (± 0,5°C) up to SN ≤ 5000 or 39 °C / 41 °C / 43 °C (± 0,5°C) from SN ≥ 5001 41°C-devices: 42.5 °C (± 0.5 °C) 43°C-devices: 45.5 °C (± 1°C)

2. safety cut-off (essential performance)

41°C-devices: 43.5 °C (± 0.5 °C) 43°C-devices: 46.0 °C (± 1 °C)

Operation temperature (TSetpoint, selectable by the user)

heater bimetal cut-off inadequate temperature alarm

10

65 °C (± 5 °C) 4 °C (± 0.5 °C) below operation temperature Tsetpoint

1 Technical description

1.5

ASTOTHERM PLUS Reparaturanleitung

Terminal connecting plan

Fig. 2 Connections between electronic components

11

ASTOTHERM PLUS Service Instrunctions

ASTOTHERM PLUS spare parts

34

12

10

31

18

14

19

23

21

7

33

22

8

1

20

1.6

1 Technical description

Fig. 3 Cross section of the ASTOTHERM PLUS

12

ASTOTHERM PLUS Reparaturanleitung

27

16

26

25

15

17

24

35

11

29

13a 28

32

13

(27)

30

1 Technical description

Fig. 4 Cross-section of bottom part assembly with optional components

13

1 Technical description

5

6

(2)

1

2

3

4

ASTOTHERM PLUS Service Instrunctions

Fig. 5 Cross-section of top part assembly with optional components

14

1 Technical description

ASTOTHERM PLUS Reparaturanleitung

ASTOTHERM PLUS spare parts When ordering please indicate always model number and serial number! No.

Order number

Name consist of

1

9751.4205.00

TOP PART OF HOUSING AP 200 complete with handle, bolts and front panel

9750.4205.00

TOP PART OF HOUSING AP 220/260 complete with handle, bolts and front panel

9751.4202.00

TOP PART OF HOUSING AP 200S complete with handle, bolts and front panel

9750.4202.00

TOP PART OF HOUSING AP 220S complete with handle, bolts and front panel

9770.4202.00

TOP PART OF HOUSING AP 260S complete with handle, bolts and front panel

n.g.

9750.8240.00

AL-Holder 4 mm with fastening material

n.g.

9750.8241.00

only from SN: BSEU1017, BSUK1021, BSCH1012, BSNA1001, DSEU1323, DSUK1043, DSCH1012, DSNA1054

AL-Holder 6,8 mm only from SN: HSEU1015, HSUK1018, HSCH1001, HSNA1015 with fastening material

2

9750.4202.14

HANDLE with fastening material

3

9750.4200.13

DISPLAY COVER

4

9751.4200.05

FRONT PANEL AP 200

9751.4200.02

FRONT PANEL AP 200S

9750.4200.05

FRONT PANEL AP 220/260

9750.4200.02

FRONT PANEL AP 220S/260S

9750.2201.01-M841

OPERATING BOARD for M841 NTCs

5

1) 2) 3)

(red or black NTC wire insulation) tested and adjusted for Type

9750.2201.01-Glas

OPERATING BOARD for glass NTCs

1) 2) 3)

(white NTC wire insulation) tested and adjusted for Type

6

9750.2200.14

KEY EXTENSION (1 Piece)

7

9750.2101.01-M841

TRANSFORMER BOARD for M841 NTCs (41°C)

1) 4) 5)

(red or black NTC wire insulation) tested

9750.2101.01-Glas

TRANSFORMER BOARD for glass NTCs (41°C)

1) 4) 5)

(white NTC wire insulation) tested

0450.2101.43

TRANSFORMER BOARD (43°C)

1) 4) 5)

(white NTC wire insulation) tested

8

9750.8100.02

AXLE HEAT PROTECTION SLEEVE

10

8510.0305.01

BUFFER (2 Pieces)

11

9750.4100.09

CABLE GLAND PG9 1Cable gland 1Counter nut

15

ASTOTHERM PLUS Service Instrunctions

1 Technical description

When ordering please indicate always model number and serial number! 12

9750.4100.10

POWER SUPPLY CORD SCHUKO 1Power supply cord SCHUKO 1Cable tie 90mm

9750.4100.12

POWER SUPPLY CORD GREAT BRITAIN 1Power supply cord GREAT BRITAIN 1Cable tie 90mm

9750.4100.16

POWER SUPPLY CORD SWITZERLAND 1Power supply cord SWITZERLAND 1Cable tie 90mm

9750.4100.17

POWER SUPPLY CORD USA 1Power supply cord USA 1Sticker GROUNDING 1Cable tie 90mm

13

13a

9750.4100.00

BOTTOM PART OF HOUSING AP 200/220/260

9750.4101.00

BOTTOM PART OF HOUSING AP 200/220/260 - PA

9750.4102.10

BOTTOM PART OF HOUSING AP 200S/220S/260S WITH ASTOLINE DEVICE SOCKET

1Bottom part 1Sticker ASTO 2Buffer 2Cable tie 90mm

1Bottom part with drill-hole for equipotential bonding 1Sticker ASTO 2Buffer 2Cable tie 90mm

1Bottom part with drill-hole for ASTOLINE socket connector 1AL-Device Socket 1AL arrow sticker 1Sticker ASTO 2Buffer 2Cable tie 90mm 1Protective cap 1Crimp connector

9750.4103.10

BOTTOM PART OF HOUSING AP 200S/220S/260S - PA WITH ASTOLINE DEVICE SOCKET 1Bottom part with drill-hole for ASTOLINE socket connector and equipotential bonding 1AL-Device Socket 1AL arrow sticker 1Sticker ASTO 2Buffer 2Cable tie 90mm 1Protective cap 1Crimp connection

14

9750.4300.01

INTERMEDIATE RING

15

9750.5100.04

THREADED SHAFT

16

9750.5102.00

CLAMP RIGHT 1Clamp right 1Rectangular nut right 1Pad

17

9750.5100.01

BASEPLATE 1Base plate 1Identification label -> when ordering specify SN and REF

18

9750.4300.02

SPACING BOLT (1 Piece)

19

9720.3725.02

O-RING 114.02 x 1,78 (2 Pieces)

20

9750.8100.00

HEAT PROTECTION SLEEVE AP 2Half part Heat protection sleeve 1Axle 2Sticker ASTOTHERM PLUS 1Fixing cord

16

1 Technical description

ASTOTHERM PLUS Reparaturanleitung

When ordering please indicate always model number and serial number! 21

9750.3132.00-41

HEAT EXCHANGER COMPLETE 1) 6) 7) GROOVE 4 MM (AP200, 220) 40/41°C 1Earth conductor 200mm mounted 4Insulating cover 1Ferrit-Ring 2Cable tie 90mm

9750.3132.00-43

HEAT EXCHANGER COMPLETE 1) 6) 7) GROOVE 4 MM (AP220) 43°C 1Earth conductor 200mm mounted 4Insulating cover 1Ferrit-Ring 2Cable tie 90mm

9770.3132.00-41

HEAT EXCHANGER COMPLETE 1) 6) 7) GROOVE 6.7 MM (AP260) 41°C 1Earth conductor 200mm mounted 4Insulating cover 1Ferrit-Ring 2Cable tie 90mm

9770.3132.00-43

HEAT EXCHANGER COMPLETE 1) 6) 7) GROOVE 6.7 MM (AP260) 43°C 1Earth conductor 200mm mounted 4Insulating cover 1Ferrit-Ring 2Cable tie 90mm

n.g.

9750.8110.01

FIXING CORD HEAT PROTECTION SLEEVE

n.g.

9524.2620

FERRIT-RING

22

9950.2100.20

FIXING STRIP

23

9750.8230.00

ASTOLINE ACTIVE INSULATION 4 MM

9750.8231.00

ASTOLINE ACTIVE INSULATION 6.8 MM

24

9850.5100.10

KNURLED SCREW

25

9750.5103.00

CLAMP LEFT

26

9750.5104.00

27

9750.5101.00

28

9750.8230.17

29

9750.8230.02

30

9750.8220.03

31

9750.8240.04

AL-INSULATION PLATE

32

9750.4184.00

EQUIPOTENTIAL RETROFITTING SET

1Clamp left 1Rectangular nut left 1Pad

HAND WHEEL 1Hand wheel with Nut M8 1Grip cover 1Head screw M4x8 1Washer A4,3

DEVICE FIXING AP COMPLETE 1Device Fixing 1 Identification label -> when ordering specify SN and REF

PROTECTION CAP for ASTOLINE device socket 1Protection cap 1Crimp connector

ASTOLINE DEVICE SOCKET 1AL device socket 1AL arrow sticker 1Counter nut

ASTOLINE BOARD 1AL-Board 2Pan head tapping screw

1Earth conductor 150mm 1Connector bolt dia. 6 mm 2Nut M6 2Washer R6,4 1Serrated lock washer V6,4 1O-ring 5x1 1Assembly plan 1Drilling gauge 1Color code washer

17

ASTOTHERM PLUS Service Instrunctions

1 Technical description

When ordering please indicate always model number and serial number! 9750.8230.20

33

AL-PLUG (for soldering) 1 AL arrow sticker

9750.4201.14

34

SET O-RINGS 4x1 MM 4 for housing screws 2 for handle 2Cable tie 90mm

9750.5101.11

35

SET O-RINGS 5x1 MM 4 for device fixing AP 1 for equipotential bonding plug 2Cable tie

n.g.

n.g. n.g. n.g.

9850.6001.00

PACKAGE AP COMPLETE 1Internal carton 1EPS insert bottom 1EPS insert top 1Outer carton 1Sticker package AP blank

9850.6003.01

OUTER CARTON SINGLE AP

9850.6003.02

OUTER CARTON DOUBLE AP

9850.6003.03

OUTER CARTON FOURFOLD AP

TEST-EQUIPMENT n.g.

n.g.

n.g.

9950.9000.02

POWER RESISTORS SET 4Pieces 15 Ohm 10 W 5 % 1Piece 100 Ohm 10 W 5 %

9950.9000.03

CD-ROM AP Calibration Software 1 Interface (230 VAC) 1 Instructions “AP Calibration Program” 1 Instructions “Eliminating microprocessor faults”

ET20010

Calibrated Test Thermometer tip 3.5 mm Special thermometer to measure the temperature of the heat exchanger

Important details Because of the different variants and changes due to technical improvement it is absolutely necessary to indicate the model number (REF) and the serial number (SN). Only then it is ensured that the desired spare part is delivered in the right configuration. 1)

2)

3)

4)

5)

6)

7)

18

An exchange of this part requires an adjusting of temperature and display (see chapter 4 of the Repair Instructions). An exact adjustment can only be made by using the interface and the AP Calibration Software or by the manufacturer. Operating boards (only for Glass-NTCs, from Rev. 3.1) can be used alternatively for 40°C or for 41°C or for 43°C devices by uploading an corresponding data file (to do this the interface and the AP Calibration Software is necessary). Operating boards from Rev. 3.1 can be used alternatively for M841-NTC or Glass-NTC devices by switching a solder jumper. Because of the different characteristics of M841-NTCs and Glass-NTCs, transformer boards cannot be used alternatively. They must be ordered and built in for the specific NTC type. Because of the different excessive temperature cut-offs, transformer boards cannot be used alternatively for 40/41°C or for 43°C devices. Because of the different position of the NTCs, heat exchanger cannot be used alternatively for 40/41°C or for 43°C devices. Heat exchanger with M841-NTCs are no longer available.

2 General guidelines and principles for the repair of ASTOTHERM PLUS

ASTOTHERM PLUS Reparaturanleitung

2 General guidelines and principles for the repair of ASTOTHERM PLUS 2.1

Technical Service and Ordering Spare Parts STIHLER ELECTRONIC GmbH Julius-Hoelder-Str. 36 70597 Stuttgart Germany

Tel: +49 (0) 711-720670 Fax: +49 (0) 711-7206757 www.stihlerelectronic.de E-mail: [email protected]

When making requests or ordering spare parts, please specify the reference and serial number of the device in question. You can find them on the device rating plate:

Fig. 6 Information on the rating plate

2.2

Guarantee repairs A 12-month guarantee is granted. During the guarantee period, the manufacturer will remedy all defects due to material or manufacturing faults free of charge either by repair or replacement. This guarantee does not cover any other damage. Damage due to misuse or improper handling, excessive force or regular wear is not covered by this guarantee. This also applies to interventions by persons other than those authorised by the manufacturer or if the original condition is changed. If damage occurs during the guarantee period, please clean the device and send it to a sales location near you or directly to STIHLER ELECTRONIC. The costs of transport and packaging are for the sender's account.

2.3

Liability The manufacturer shall only be liable for the safety, reliability and performance of the device if all operating, maintenance and testing procedures comply with the procedures communicated by the manufacturer and are carried out by properly trained and qualified personnel; if -when necessaryonly original spare parts are used to replace components; if assembly and repairs are only carried out by authorised personnel or an authorised service centre; if the electrical systems comply with the locally applicable instructions and regulations and the IEC requirements and if the device is used in keeping with the instructions of use for the intended purpose and at a suitable location.

NOTICE The fact that technical documents or spare parts are made available does not imply any authorisation on the part of the manufacturer to open or repair the device.

19

ASTOTHERM PLUS Service Instrunctions

2.4

2 General guidelines and principles for the repair of ASTOTHERM PLUS

Important instructions All tests must be carried out by properly qualified staff, i.e. staff who have the relevant expert professional training, knowledge and experience and are familiar with the relevant technologies, standards and local rules and regulations. Personnel who have to assess safety must be able to recognise any consequences and dangers caused by devices which do not comply with the requirements. The measuring equipment must comply with the relevant standards. All repair activities, all tests carried out and their results must be recorded. The pattern approval is invalidated if the device is no longer in its original state. You must therefore use only original spare parts. Due to the safety risks, electronic PWBs must only be repaired by the manufacturer. If they are faulty they must always be replaced in their entirety. Any heat exchanger cylinder is an individual item from a heat engineering point of view, due to its complex production and the large number of influencing variables (production tolerances in the manufacture of the heating system, NTCs etc.). For this reason, every electronic temperature control needs to be specifically matched to “its” heat exchanger cylinder in order to achieve sufficiently small control fluctuation later on. The NTCs form the core of the blood warmer. Their sensitivity means that it is prohibited to change their position or replace them. When dismantling or assembling the device, ensure that the NTCs/their connecting wires are not damaged. Defective NTCs may be replaced only by the manufacturer. The complete heat exchanger cylinder/transformer board/operating board unit needs to be returned for this purpose. For all thermal test work pay attention to room temperature and ambient effects! As the control temperature is set accurate to a few tenths of a C, pay attention to the following points: - avoid external effects on the heat exchanger unit /electronics to be measured - no draughts - constant room temperature (20 to 26 °C) - keep out of direct sunlight - keep away from strong light sources NOTICE A functional check (see Section 4) and a continuous duty test (see Section 9) must be performed after any repair to the device.

20