DLAB Laboratory Instruments DM0412S - Troubleshooting Guide; Common Problems and Solutions; Rotor and Tube Guidelines

10
9. Trouble shooting
Symptom
Causes
Solutions
Power lamp does not light when
the POWER is turned on.
·Building power circuit breaker
trips.
·Remove the trouble and turn on
the POWER.
Abnormal vibration
·Rotor do not match with spindle
·Samples are imbalance
·Install again the rotor
· Weighting scales, install
symmetrically
Possible reasons that the centrifuge can not work well
Door fault
·The door opened in running.
·Door switch failure.
·Close the door immediately.
·Replace the door switch
No speed signal
·The centrifuge runs at very low
speed
· Check the speed sensor,
reconnect it again or replace it.
Over speed
·The centrifuge runs at much
bigger than the maximal speed
·Contact with service center
Table 9-1 Possible problems and solutions
10. Instructions for the rotor and tubes
CAUTION
 Read the instructions thoroughly, to properly load and use rotor.
 Do not exceed the allowable maximum speed of rotor、tube and adapters etc. Ensure the allowable
maximum speed of adapters is lower than the rotor’s maximum speed.
Before lock the rotor, rotate it, and observe carefully if
there is obvious vibration, if so, please take off the
rotor, turn some angle and install it again, until the
rotor rotates smoothly, then, lock it firmly.