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7 Change mains input fuse
Switch off the mains switch and separate the centrifuge from the mains!
The fuse holder (A) with the mains input fuses is located next to
the mains switch.
• Remove the connecting cable from the machine plug socket.
• Press the snap-fit (B) against the fuse holder (A) and
remove.
• Exchange defective mains input fuses.
AB
Only use fuses with the rating defined for the type.
See the following table.
• Reinsert the fuse holder until the snap-fit clicks shut.
• Reconnect the centrifuge to the mains supply.
Model Type Fuse Order no.
EBA 21 1004, 1004-30 T 3,15 AH/250V E997
EBA 21 1004-01, 1004-31 T 6,3 AH/250V 2266
8 Functional check after a repair
After a repair a functional check of the unit must be carried out.
For functional check a test run with the loaded rotor must be performed.
During the test run the followings must be checked:
• Function of the keys, the display and the LEDs.
• Run-up and slow-down time, max. speed of the rotor. Values see operating
instructions chapter "Anhang/Appendix, Rotoren und Zubehör/Rotors and
accessories".
• Sample temperature. Values see operating instructions chapter "Anhang/Appendix,
Rotoren und Zubehör/Rotors and accessories".
• Imbalance switch-off. Values see chapter "Imbalance switch-off".
• Current consumption. Values see chapter "Technical specifications".
After the test run a safety test must be carried out. Check the following values:
• Insulation resistance
> 2 MΩ
• Protective conductor resistance
< 0.2 Ω
• Leakage current
< 3.5 mA *
* limit according to EN 61010-1
A laboratory centrifuge do not belong to those medical appliances which may be tested
according to the regulation IEC 60601-1 or corresponding national medical electronic
standards. Laboratory centrifuges are classified as laboratory equipment.
The regulations applying to laboratory equipment are IEC 61010-1 or European
standard EN 61010-1.
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