Sarstedt SAHARA 4 User manual

1
Service Manual SAHARA 4
Service Manual
SAHARA 4

Last modied: July 2023
Manufacturer and customer service
address:
Device data:
(to be completed by the customer)
SARSTEDT AG & Co. KG
Sarstedtstr. 1
51588 Nümbrecht
Germany
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
www.sarstedt.com
Type: SAHARA 4
Serial No.:
Place of installation:
Issue date:
Inventory No.:

Service Manual SAHARA 4
Table of contents
1 Safety advice..........................................................................................................................................4
2 Symbol description ................................................................................................................................4
3 Device setup...........................................................................................................................................5
4 Preventive controls and maintenance by the service personnel .........................................................5
4.1 Maintenance via integrated service functions ............................................................................................5
4.2 System update .......................................................................................................................................7
5 Repair .....................................................................................................................................................7
5.1 List of spare parts.....................................................................................................................................7
5.2 Open and close the housing.....................................................................................................................8
5.3 Replacing the fuses.................................................................................................................................. 8
6 Technical information............................................................................................................................. 8
6.1 Technical data .........................................................................................................................................8
6.2 EMC advice..............................................................................................................................................9
6.3 Circuit board assembly and circuit diagrams ............................................................................................9
6.4 Error messages .......................................................................................................................................9
7 Accessories ..........................................................................................................................................11
8 Appendix .............................................................................................................................................11
9 Check list for preventive inspection....................................................................................................12
10 Decontaminationcerticate ................................................................................................................13
11 Notes.....................................................................................................................................................14
11 Notes.....................................................................................................................................................15

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Service Manual SAHARA 4
1 Safety advice
• Follow the advice in the instructions for use.
• Repairs, maintenance and inspections on the device must only be conducted by authorised persons and organisations
who have the know-how and the appropriate tools and test equipment available. Maintenance and repairs for which the
device interior must be opened using tools may not be carried out by third parties and must only be carried out by the
manufacturer.
• For ordering of spare parts always specify the serial no. of the device.
You will nd the serial no. on the device and on the cover sheet of this service manual.
• Only use original spare parts for service works. Spare parts must not be modied.
• Before removing the cover turn o the device and disconnect it from the local power supply system.
• After service works always inspect the device functions if the service works may have an eect on the safety or
functioning of the device.
• If necessary, exchange of single components is explained separately by an instruction for repair,
which is delivered together with the spare part.
2 Symbol description
Follow instructions for use
WARNING
Important information. If ignored a serious or life-threatening injury may occur.
WARNING
Important information. If ignored an electrical shock due to dangerous voltage may occur.
CAUTION
Important information. If ignored a minor injury may occur.
CAUTION
Helpful information on the appropriate use of the device. If ignored an operating error, malfunction or
device defect may occur
Permissible pressure range
Permissible temperature range
Store in a dry place
Item number
Serial number
CE mark

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Service Manual SAHARA 4
Medical device
Manufacturer
Country of manufacture
Manufacturing date
Unique product identication
Separate collection of electrical and electronic equipment
Alternating current
3 Device setup
1. Housing cover 6. Agitator mechanism
2. Lower part of the housing 7. Fan heater
3. Warming plate 8. Infrared sensor
4. Positioning frame 9. Position fan
5. Collection tray
4 Preventive controls and maintenance by the service personnel
4.1 Maintenance via integrated service functions
4.1.1 Activating the service functions
The integrated service functions can be activated via the options menu of the device.
• Switch on the device and when it goes into standby mode press the button on the display.
• Select the menu item for the system information.
• Touch the red logo in the upper left corner and hold for a few seconds.
The service functions are activated within the options menu after pressing the button again.
1
2
345
6
7
8
99

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Service Manual SAHARA 4
The service functions are deactivated again after switching o the device.
4.1.2 Overview of service functions
After activation, the following integrated service functions can be selected via the extended options menu:
Service function Description of the service function
Scanning area Representation of the scanning area of the infrared sensor.
External calibration See sec. 4.1.3
Test position fans See sec. 4.1.4
Data base management – Delete data base Database maintenance function:
Database stored in the device with the registration and
tempering data records is deleted.
Lock options menu See sec. 4.1.5
Error memory The last 10 error messages that occurred on the device are displayed
with date and time.
4.1.3 External calibration
By means of the external calibration, the temperature of the warming plate heated to approx. 37 °C can be recorded using a
reference clinical thermometer with an accuracy of at least ±0.5 °C and then compared with the temperature of the warming
plate determined by the device.
A thermometer block, available separately (see sec. 7), is required in addition to a clinical thermometer for external calibration.
• Remove objects from the warming plate and switch o the device for at least 15 minutes.
• Switch on the device and activate the service functions (see sec. 4.1.1).
• Activate the process via the “External calibration” menu item in the options menu.
• Insert the clinical thermometer into a suitable opening on the thermometer block. When prompted by the display,
place the thermometer block with clinical thermometer onto one of the front heating zones (see Figure).
• After conrming this process, close the cover.
The warming plate and the thermometer block on top of the warming plate are heated for approx. 15 min.
• When prompted by the display, start temperature measurement with the clinical thermometer and enter the reference
temperature read o via the touch screen.
• Remove the clinical thermometer together with the thermometer block from the warming plate.
After conrming this process, the result of the external calibration is provided on the touch screen and on a USB stick.
4.1.4 Checking the position fans
By means of this service function, a function test of all position fans can be carried out.
• Switch on the device and activate the service functions (see sec. 4.1.1).
• Activate the service function via the “Test position fans” menu item in the options menu.
• Open the tension locks at the rear of the device and remove the cover.
• Visually check that the blades of all position fans rotate.
• Exit the service function after the visual inspection has been completed. Then reattach the cover to the lower part of the
housing and close the tension locks at the rear of the device.

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Service Manual SAHARA 4
When closing the housing, make sure that no cables are caught or have gone loose during the test.
4.1.5 Locking the options menu
• Switch on the device and activate the service functions (see sec. 4.1.1).
• Select the menu item “Lock options menu” in the options menu.
• Set the selection window to “ON” and conrm with the key .
To unlock the options menu in standby select the key and enter the numerical code “4711” or
read the master barcode via a barcode reader.
4.2 System update
The device can be updated by installing new software.
• Backup all data records from the internal memory of the device on an external memory medium.
• Switch o device and remove all connected USB sticks.
• Insert the USB stick with the new software into one of the USB slots of the device and switch device on.
The software update is read from the USB stick after conrmation and saved in the memory of the device.
• Remove the USB stick from the USB slot.
The current version of the software can be called up in the options menu under the “System information”
menu item.
5 Repair
When ordering spare parts, always indicate the serial number of the device!
5.1 List of spare parts
5.1.1 Assemblies
Product Order no. Pcs. / SU
S4 Collection tray 97.8680.401 1
S4 Positioning frame 4X1 97.8680.402 1
S4 Warming plate 4x1 97.8680.490 1
USB stick 97.8700.445 1
5.1.2 Single components

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Service Manual SAHARA 4
Product Order no. Assembly Pcs. / SU
S4 housing hood 97.8680.500 Housing cover 1
S4 acrylic glass ap, lacquered 97.8680.501 Housing cover 1
S4 magnet for ap 15/3 97.8680.502 Housing cover 1
S4 Fuse 10AHT 97.8680.515 2
S4 radial fan angular 24V DC 97.8680.600 Position fan 1
S4 radial fan straight 24V DC 97.8680.601 Position fan 1
S4 cross ow fan 24V DC 97.8680.602 Fan heater 1
S4 fan LED platine 97.8680.605 Fan heater 1
S4 heating register 97.8680.610 Fan heater 1
S4 thermopile sensor 97.8680.620 Infrared sensor 1
5.2 Open and close the housing
• Switch o the device and disconnect it from the power supply by removing the mains cable.
• Open the turnbuckle at the rear of the housing and carefully lift o the housing cover.
To re-assemble, follow the instructions above in reverse order.
When closing the housing, make sure that no cables are caught or have gone loose during the repair.
5.3 Replacing the fuses
The fuse holder is located in the mains switch insert on the rear of the device. To replace the fuses, proceed as follows:
• Disconnect the device from the power supply by removing the mains cable.
• Carefully lever the mains switch insert out of the mains connection housing using a suitable atblade screwdriver.
• Remove the old fuses from the fuse holder of the mains switch insert.
• Insert the new fuses into the fuse holder of the mains switch insert.
• Reinstall the mains switch insert in the mains connection housing.
• Connect the device to the power supply via the mains cable.
6 Technical information
6.1 Technical data
Dimensions: W × H × D: 574 mm x 348 mm x 554 mm
Weight: 27,3 kg
Nominal voltage: 100 – 240 V AC
Power supply frequency: 50 – 60 Hz
Max. power consumption: 1000 W
Protection class: I
Operating mode: Continuous operation
Temperature adjustment range: 37 °C to 42 °C
Temperature control accuracy: -1,5 °C / +2,5 °C
Accuracy of infrared sensor: ± 3 % at a blood product temperature of 37 °C
Max. load: 4 blood products , each weighing up to 400 g
Fuse characteristics: 2 x T 10,0 A H 250 V, 20 x 5 mm acc. to IEC / EN 60127-2
Connections: 2 x USB, 1 x LAN*

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Service Manual SAHARA 4
Ambient operating conditions: +10 °C to +30 °C
30 % to 75 % rel. humidity
790 hPa to 1060 hPa
max. 2000 m altitude
Ambient conditions for storage
and transport:
-20 °C to +50 °C
500 hPa to 1060 hPa
Expected service life: 10 years (in normal use and provided that the required regular inspections
and maintenance were carried out)
*is not supported at this time
6.2 EMC advice
EMC-emitted interference Classication
HF emission according to CISPR11 Group 1, class B
Emission of harmonics according to
IEC 61000-3-2
Class A
Voltage uctuations and icker according to
IEC 61000-3-3
No classication
EMC interference resistance Test level
Electrostatic discharge (ESD) according to
IEC 61000-4-2
± 8 kV contact discharge
± 15 kV air discharge
Quick transient electric disturbances /
bursts according to IEC 61000-4-4
± 2 kV with 100 kHz repetition frequency for power cables
± 1 kV with 100 kHz repetition frequency for input and output wires
Surge voltages / surges according to
IEC 61000-4-5
± 1 kV voltage between external conductor and external conductor
± 2 kV voltage between external conductor and earth
Voltage drops, short interruptions and
uctuations of the supply voltage according
to IEC 61000-4-11
0 % UT; ½ period at 0, 45, 90, 135, 180, 225, 270 and 315 degree
0 % UT; 1 period at 0 degree
70 % UT; 25 periods
0 % UT; 5 seconds
Magnetic eld at supply frequency according
to IEC 61000-4-8
n.a. (the device does not contain magnetically sensitive components)
Conducted HF-disturbances according to
IEC 61000-4-6
3 V between 0.15 MHz and 80 MHz; 80 % amplitude modulation at 1 kHz
6 V in ISM and amateur radio bands between 0.15 MHz and 80 MHz;
80 % amplitude modulation at 1 kHz
Radiated HF-disturbances according to
IEC 61000-4-3
10 V/m between 80 MHz and 2.7 GHz; 80 % amplitude modulation
at 1 kHz
Radiated proximity elds from RF wireless
communications equipment according to
IEC 61000-4-3
27 V/m 385 MHz pulse modulation 18 Hz
27 V/m 450 MHz frequency modulation ± 5 kHz Hub, 1 kHz Sinus
9 V/m 710 MHz, 745 MHz, 780 MHz pulse modulation 217 Hz
28 V/m 810 MHz, 870 MHz, 930 MHz, pulse modulation 18 Hz
28 V/m 1.72 GHz, 1.845 GHz, 1.97 GHz, pulse modulation 217 Hz
28 V/m 2.45 GHz, pulse modulation 217 Hz
9 V/m 5.24 GHz, 5.50 GHz, 5.785 GHz, pulse modulation 217 Hz
6.3 Circuit board assembly and circuit diagrams
If circuit board assembly and circuit diagrams are required for a repair, these can be provided on request.
6.4 Error messages
By means of the following table errors indicated on the display during the system test can be remedied. If more than one
measure appears to be suitable in remedying a particular error, each measure must be implemented one after another.
Should none of the listed measures eliminate the error or should an error code appear which is not listed below, please
contact the manufacturer. In this case, please indicate the serial number, the version number of the operating system as
well as an error description.

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Service Manual SAHARA 4
Error code Cause Action
Open cover Opening of the cover ap was not
recognised
1. Check whether the disc magnet has detached
from the cover ap and is stuck to the lower part
of the housing.
2. Ax the disc magnet to the cover ap.
Close cover Closing of the cover ap was not
recognised
1. Check whether the disc magnet is on
the cover ap.
2. Ax new disc magnet to the cover ap.
Warming plate defect Warming plate does not heat 1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 1.x System driver could not be loaded Contact the manufacturer.
init 2.1 Communication temperature
monitoring sensor, fan heater
Remove the housing cover and check that the
ribbon cable to the fan heater is fully inserted.
init 2.2 Communication temperature
monitoring sensor, warming plate,
heating circuit No. 1
1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 2.3 Communication temperature
monitoring sensor, warming plate,
heating circuit No. 2
1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 2.4 Communication temperature
monitoring sensor, warming plate,
heating circuit No. 3
1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 2.5 Communication motor driver Contact the manufacturer.
init 2.6 Communication IR sensor Remove the housing cover and check that the
infrared sensor plug is fully inserted.
init 2.7 Communication touch screen Contact the manufacturer.
init 2.8 Communication warming plate
controller
1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 2.9 Communication ambient air controller Remove the housing coverand check that the
ribbon cable to the fan heater is fully inserted.
init 2.10 Warming plate not connected 1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 2.12 Absence of supply voltage Contact the manufacturer.
init 2.13 Communication I2c piezo – light Contact the manufacturer.
init 2.14 Agitator mechanism defect Contact the manufacturer.
init 2.15 Fan heater not connected 1. Remove the housing cover and check that the
ribbon cable to the fan heater is fully inserted.
2. Exchange fan heater.
init 2.16 Fan in the fan heater does not rotate 1. Remove the housing cover and check that the
ribbon cable to the fan heater is fully inserted.
2. Exchange fan heater.
init 2.17 Fan in the fan heater always rotates 1. Remove the housing cover and check that the
ribbon cable to the fan heater is fully inserted.
2. Exchange fan heater.

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Service Manual SAHARA 4
Error code Cause Action
init 2.18 Communication temperature
monitoring sensor, warming plate,
heating circuit No. 4
1. Open cover ap and check that the plug to
the warming plate is fully inserted.
2. Exchange warming plate.
init 3.1 Target temperature cannot be read Contact the manufacturer.
init 3.2 Parameters for locking the options
menu cannot be read
Contact the manufacturer.
Init 3.3 Data management parameters
cannot be read
Contact the manufacturer.
init 3.4 Controller parameters for fan
heater cannot be read
Contact the manufacturer.
init 3.5 Controller parameters for warming
plate cannot be read
Contact the manufacturer.
init 3.6 Error memory cannot be read Contact the manufacturer.
init 3.7 Serial number cannot be read Contact the manufacturer.
init 3.9 No access to the SD card possible Reinsert the SD card or replace the defective
SD card with a new one.
init 3.10 Volume parameters cannot be read Contact the manufacturer.
init 3.11 Production parameters cannot be read Contact the manufacturer.
init 3.12 Touch screen parameters cannot
be read
Contact the manufacturer.
init 4.2 Controller cannot interrupt the
supply voltage
Contact the manufacturer.
init 4.3 Watchdog controller cannot interrupt
the supply voltage
Contact the manufacturer.
7 Accessories
Article Article no.
Thermometer block for xation of clinical thermometers 97.8710.543
8 Appendix
• Test reports of outgoing inspections
• Check list for preventive inspection
• Decontamination certicate

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Service Manual SAHARA 4
9 Check list for preventive inspection
Hints
• Observe the indications in the Service Manual and Instructions for use
• Only use calibrated test equipment
Test item
Type Order no. Serial no.
SAHARA 4 97.8720.500
Tests
Visual examination
Every 24 months
Electrical safety according to EN 62353
Every 24 months
Function test /
External calibration
Every 12 months
Cleanness, completeness,
damage Grenzwert Measur. value
Function test
Device inscription PE-resistance,
permanently
attached cord
0.300 Ω Ω
Position fan test
Documents Equipment leakage
current, Class I, direct 0.5 mA mA External calibration
Test equipment
Used test equipment Test equipment name/number
Device for checking the electrical safety
Thermometer
Result and measures
Defects have been detected that may harm patients,
users or third parties: YES NO
Measures to take: Repair Adjustment None
Comments:
Checked by: Date / Signature: Next test date:

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Service Manual SAHARA 4
10 Decontaminationcerticate
1. General Information:
For all returns, the fully completed certicate of decontamination is a prerequisite for the acceptance and further processing
of the used item.
Please attach the decontamination certicate clearly visible on the outside of the packaging so that it can be read without
unpacking the item. If no corresponding declaration is enclosed, we will carry out a chargeable decontamination at your
expense.
To be completed in block capitals:
Customer Name:
Institute / institution / company:
Place:
Safety level laboratory*:
Protection level laboratory *:
E-mail address:
Phone number:
*Applies only to items shipped from laboratories up to and including S2 and / or L2. Shipment is prohibited from L3 / S3 onwards.
Quantity Product description Item No. LOT / Serial No.
2.Conrmation:
Complaints pattern was contaminated: yes no
if so, by which substances: biological agents (according to BioStoV)
derived from body materials
DNA intercalating substances
Radioactive substances
Other substances, if so, which:
Measures for decontamination:
I hereby certify that the items listed under point 1 are free from contamination with the substances listed under point 2.
Place, date Signature of the authorized person

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Service Manual SAHARA 4
11 Notes

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Service Manual SAHARA 4
11 Notes

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BA 115 Technical modications reserved
SARSTEDT AG & Co. KG
P.O. Box 12 20
D-51582 Nümbrecht
Phone: [phone]
Fax: [phone]
[email protected]
www.sarstedt.com