Hettich EBA 21 Repair Instructions

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N > MAX 05
Error Excess speed. The speed recognised by the speed sensor
(speedometer) is 250 RPM greater than the n-max speed of
the rotor.
Error
consequence
The centrifuge slows down until the ”open the lid” release
occurs.
Cause of error
• Insulation of speed sensor (speedometer) cable is
defective.
• Loose contact on speed sensor (speedometer) cable.
• Speed sensor (speedometer) is defective.
• Flat ribbon cable to control panel is defective.
• Control panel or frequency converter or supply board is
defective.
Error code reset Perform a MAINS RESET.
ROTORCODE 10
Error An invalid rotor code was read during start-up.
Error
consequence
The centrifuge slows down until the ”open the lid” release
occurs.
Cause of error
• Magnetic coding on rotor is defective.
• Speedometer system is defective.
• Loose contact on speed sensor (speedometer) plug
• Motor is rotating in the wrong direction.
Error code reset Open the lid or perform a MAINS RESET.
MAINS INTERRUPT
Error Interruption of mains supply during centrifugation.
Error
consequence
The centrifuge slows down until the ”open the lid” release
occurs.
− Switching on at the mains during centrifugation causes
slowing-down until the ”open the lid” release occurs.
− Switching on at the mains when the rotor has stopped
brings about the ”open the lid” release.
Cause of error
• Power supply has failed.
• Loose contact in electrical connections.
• Flat ribbon cable to control panel is defective.
Error code reset Open the lid and press the
START
key.
This error cannot be reset by a MAINS RESET

Hettich EBA 21 Specifications

General

Brand	Hettich
Model	EBA 21
Category	Laboratory Equipment
Language	English