Instruction manual

Operation
When power failure occurs
2-66 WX Ultra Series Thermo Scientific
Thus, the current total number of runs and hours have been updated.
When power failure occurs
1. Rotation of the rotor
The rotor coasts to a stop. If the power is restored when the current speed is more than 500 rpm, the
rotor will be automatically accelerated to the set speed. If it is restored when the current speed is less
than 500 rpm, the rotor will decelerate to a stop.
2. Displays on the panel
All displays on the panel go out. The set values are all backed up by battery during the power failure.
When the power is restored, the displays will come on as before the power failure; the set values will be
restored; and the message “Power failure” will appear in the message display.
3. Removing the rotor from the ultracentrifuge
First open the chamber door, then remove the rotor according to the following procedure:
(1) Check that the rotor is at rest. Listen carefully for any sounds coming from the drive.
(2) Then unplug the power cord from the wall outlet, and wait at least three minutes to avoid the risk
of electrical shock.
(3) Remove the four M5 hexagon head bolts fixing the front cover from both sides and pull down the
front cover by pulling its lower side forward. Then, remove the front cover.
The upper side of the front cover is an insertion type but not a screw fixing type.
DANGER Before removing the cover, top deck, or other components. for maintenance, be
sure to turn off the POWER switch of the centrifuge. Then unplug the power cord from
the wall outlet, and wait at least three minutes to avoid the risk of electrical shock.
WARNING
1. Never open the door during rotation.
2. Never touch the rotor during rotation.
CAUTION Never conduct operations in a manner other than as described in this operation
manual.
WARNING It can take more than three hours for the rotor to come to a complete stop
because the rotor chamber is under vacuum.
Before opening the door, wait until the rotor comes to a stop.