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12 Frequent problems and solutions
WARNING:
Never open the door while the instrument is running.
If the door is opened while the rotor is still rotating, close it immediately.
12.1 How to open the door
1) The condition with the power on
User can open the door only when the instrument is powered and the rotor is not
rotating.
(1) When the instrument turns on the power switch, press
button to open the door.
But 6 seconds later, the door will be locked again.
(2) The door will be unlocked by pressing the
button. But 6 seconds later, the door
will be locked again.
(3) When the rotor is stopped, press
button to open the door.
2) The condition with the power off
If the door cannot be opened due to the power outage, try to use the following steps:
(1) Make sure that the rotor is not rotating.
Listen carefully to make sure that no sound can be heard.
Confirm that the rotor is not rotating through observation window.
Please allow of a sufficient time before taking any further actions.
(2) Insert a screwdriver into the small hole to open the door.
The small hole is located on the left upper side of the centrifuge.
Insert a screwdriver into this hole, and then push the lock to open the door.
(3) While the screwdriver pushing the lock, user can open the door with your hand.
12.2 How to remove the rotor stuck on the shaft
When the rotor is placed on the driving shaft for a long time, or because of extensive
vibration, it may be firmly stuck on the driving shaft and will be difficult to be removed.
Under this condition, the driving shaft may be bended if improper operation is used.
Correct Procedures is as followings:
1
)
Fix the screw (included in the attachment tools of the centrifuge) into the central
thread hole of the rotor.