6
Troubleshooting
Mechanical Emergency Door Release
6-2
Fresco 17 / 21
Thermo Scientific
Mechanical Emergency Door Release
During a power failure, you will not be able to open the centrifuge door with the regular electric door
release. A mechanical override is provided to allow sample recovery in the case of an emergency.
However, this should be used only in emergencies and after the rotor has come to a complete stop.
Always wait a few minutes until the rotor has come to a stop without braking. The brake does not work
when there is no current. The braking process lasts much longer than usual.
Proceed as follows:
1. Make sure the rotor has stopped (view port in the lid).
2. Pull out the power supply plug.
3. Insert a 3 inch long wire (e.g. a staple) into the hole above the control panel.
4. Press the centrifuge door down gently. Push the wire further into the hole until you hear and feel
the door latch unlocking.
5. Remove the wire from the hole and open the centrifuge door.
Now you can remove your samples.
Figure 6-1.
Emergency Door Release
Reconnect the centrifuge once the power has been restored. Switch on the centrifuge.
WARNING
The rotor can still be spinning at high speed. If touched, it can cause serious
injuries.
WARNING
Never use your hand or other tools to brake the rotor.
Emergency Door Release
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