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If a power failure may last a long time, open the door and take out the rotor as described below.
The rotor chamber is in a vacuum with low air resistance. The rotor may therefore go on turning for
approximately 120 minutes before stopping. Allow enough time before opening the door.
1. Make sure that the rotor has stopped.
2. Unplug the power cord of the micro-ultracentrifuge from the wall outlet.
3. Remove the four screws that fasten the both sides of the front cover by Hex key, remove the front
cover while pulling it towards you, and remove the cover.
Front cover
Figure 2-25. Removing the front cover
4. Remove the vacuum release knob at the left of the vacuum chamber (by turning its tip
counterclockwise) to allow air to enter the rotor chamber. When the rotor chamber reaches
atmospheric pressure, do not forget to return the vacuum release knob to its previous position.
5. Pull the release wire of the door lock in the left side of the vacuum chamber toward you, and open
the door. After opening the door, make sure that the rotor is not rotating. If it is rotating, close the
door immediately.
Thermo Scientific
WARNING
Before following this procedure, listen carefully for sound from within the rotor chamber
and make sure that the rotor is not turning.
While the rotor is rotating, never unlock the chamber door.
Top deck
WARNING
Never touch the rotor while it is rotating.
Vacuum
release knob
Front cover fastening screw
Front cover hook
2
Sorvall MTX 150
2-71
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