Analysis of common fault of medical centrifuge machine

Analysis of common fault of medical centrifuge machine

Bearing 1 centrifuge bearing damage conversion. The interior of the bearing is short of oil or dirt too much, the motor speed is not up to the additional speed: first check bearing. Should be completely clean the bearing and grease. Check whether the normal commutator or brush and the cooperation can meet the detonation, assuming the commutator surface has a layer of oxide should use fine sandpaper to suspend the grinding. Assume that the medical centrifuge commutator and brush cooperation does not meet should be adjusted to touch the outstanding cases, the final view the rotor windings, with and without short circuit phenomenon, estrus short-circuit initiative rewind coil.
2 manual de novo or roll after cleaning automatically oiling. The weather was cold when medical centrifuge in low speed gear can't start: lubricating oil or lubricating oil solidification transformation dry stick. Preliminary.
3 centrifugal motor does not turn: on the power line, plug, socket suspend view, electricity. Damage to the conversion, the next step is to look at the band switch or damage or wires to get rid of the rheostat. Damaged or get rid of that conversion element, and re welded connection. Break off or open circuit secondly check motor field coil (internal) as the attachment ring break off to welding. But the internal circuit can rewind coil coil.
4 flat can be polished with sandpaper. Assume that the medical centrifuge is the title of the brushes and commutator touch bad. Touch bad usable fine sandpaper to polish between parts, commutator and brush gap is too large to view the situation: flat commutator surface. Start from the adjustment between the brushes and commutator cooperation. Then check whether there are some field coil short circuit or earth or some rotor winding short circuit or open circuit, such as the above situation no matter which one had thrown rewind magnetic field coil or rewind the rotor coil.
5 vibration, big noise: see violent unbalanced title are loose nut fixing machine. Damaged or tortuous view medical centrifuge bearing. The machine cover deformation or range of imprecise will conflict. To deal with the check adjustment.

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