Rotor Chamber; Drive Shaft (Crown); Cabinet - Hitachi CR22N Instruction Manual

This centrifuge does not require complicated maintenance and inspection. To ensure safe and trouble-free
use for a long time, follow the instructions below.
CAUTION：Using a cleaning or sterilization method other than the ones recommended in this
instruction manual might cause corrosion or deterioration of the centrifuge. Refer to the
chemical resistance chart provided with the rotor, or contact Hitachi Koki.
CAUTION： For sterilization of the surface of the centrifuge and the rotor chamber, wipe them with a
cloth dampened with 70% ethanol. Using the method other than the above method might
cause corrosion or deterioration of the centrifuge. Refer to the chemical resistance chart
provided with the rotor, or contact Hitachi Koki.
While we recommend that 70% ethanol is used for sterilization, no guarantee of sterility
or disinfection is expressed or implied. When sterilization or disinfection is a concern,
consult your laboratory safety officer regarding proper methods to use.
CAUTION：Before cleaning or sterilizing the centrifuge, follow below.
1) Be sure to turn off the POWER switch and turn off the distribution board of your
centrifuge room if your centrifuge is equipped with a three wire power cord.
2) Be sure to turn off the POWER switch and unplug the power cord from the receptacle
if your centrifuge is equipped with a power cord with a plug.
For information on the maintenance of rotors and tubes, see the rotor instruction manual provided with the
rotor.
CAUTION: Do not pour any liquid (such as water, detergent, or disinfectant) directly into the rotor
chamber. If you do so, the bearings of the drive unit might corrode or deteriorate.
(1) If the rotor chamber is found not dry, wipe moisture from the chamber with a cloth or sponge to
cool the rotor efficiently. Drain condensed water from the chamber by using the drain hose.
(2) If the rotor chamber is found dirty, wipe the chamber with a cloth or sponge dampened with a
diluted solution of neutral detergent.
(3) Turn off the centrifuge power and keep the door opened to dry the chamber after operation.
CAUTION: Once a month, clean the inside of the drive hole (crown hole) of the rotor and the
surface of the drive shaft (crown) of the centrifuge. If the drive hole or the drive shaft is
stained or any foreign matter adheres to it, the rotor may be improperly installed and
come off during operation.
This part is very important because the rotor is mounted on it and the crown transmits the driving
force to the rotor. Before mounting a rotor, wipe the outer surface of the crown with a soft cloth
sufficiently dampened with water.
Always keep the table and the cabinet of the centrifuge clean to prevent dust and other materials from
falling into the rotor chamber. Wipe the table and the cabinet with a cloth or sponge dampened with a
diluted solution of neutral detergent. If any solution that is toxic, radioactive, or pathogenic is spilled
inside or outside the centrifuge, take necessary action according to your proper laboratory procedures and
methods.

3-1 Rotor Chamber

3-2 Drive Shaft (Crown)

3-3 Cabinet

3-2
3-1 Rotor Chamber
3-2 Drive Shaft (Crown)
3-3 Cabinet