(2) Turn off the POWER switch and power circuit breaker for the ultracentrifuge.
(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.
Fig. 3-5-1. Removing the front cover
(4) Open the air vent (by turning the vacuum release screw on the left of the vacuum chamber
counterclockwise) to let air into the rotor chamber. When the pressure in the rotor chamber reaches
atmospheric pressure, do not forget to tighten the vacuum release screw as it was before. (See Fig.
3-5-2.)
(5) Pull the door unlock wire on the right of the vacuum chamber and, at the same time, push the door
handle. Then the door opens. When opening the door, confirm that the rotor is not rotating.
I
f it is
still rotating, immediately close the door.
WARNING:
Never touch the rotor while it is rotating.
(6) Remove the rotor. After the removal, close the air vent and put the front cover back to the
ultracentrifuge. Insert the top surface of the front cover in the bottom surface of the front side of the
top deck and put the bottom surface of the front cover on the support plate of the front cover by
reversing the removing procedure. Push the front cover against the frame not to make a space
between the front cover and the frame. Then fix the front cover on the frame with four M5 hexagon
head bolts.
3-5 Happenings when Power Failure Occurs
M5 hexagon head bolt for
fixing the front cover(4 pcs.)
Cabinet cover
Top deck
Front cover
3-104
