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3.9 Safety devices
Mains switch
⇒
with thermal overload protection
Over voltage protection and
radio interference suppression
filter
⇒
on Electronics U320 (A1)
Additional radio interference
suppression filter
⇒
in mains input circuit (only with 120 V model)
Frequency converter
⇒
on Electronics U320 (A1), electrically protected
Motor
⇒
Overtemperature switch (> 140 °C)
Centrifuge chamber
⇒
Overtemperature switch (> 60 °C)
4 Troubleshooting procedures
• Fuses in installation in which centrifuge is installed are intact.
• Supply voltage present at (see circuit diagram):
− Connecting cable
− Appliance plug
− Mains switch
− Electronics U320 (A1), plug S100
• Look for the displayed error code in the chapter "Error messages".
• Remedy the error according to the instructions.
• Carry out a functional check after every repair and whenever a component is
replaced, see chapter "Functional check after a repair".
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