Heraeus CRYOFUGE 6000i, Operating Instructions Manual

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Installing and Removing the Rotor
20
Rotor hood
The wind protection boiler rotor no. 6606 is designed with a removable hood, in order to keep air friction and
noise to a minimum and therefore to reach the specified maximum speeds (with the hood on). When load-
ing the rotor, the hood should be inserted in the holder especially provided for this purpose on the inner side
of the centrifuge lid (see illustration 15)
WARNING!
1. If the wind protection boiler rotor is operated without the hood, (e.g. in the case of pre-cooling) the speed
set must be reduced to 2000 rpm (no. 7719: to 1500 rpm)!
2. For the operation of the double blood bag buckets no. 7617 in an old rotor (delivered before 1993), a
newly shaped hood must be used. The positive permit for bucket type no. 7617 must be visible on the
top of the hood, if not the rotor must not be operated with the hood and only up to 2000 rpm without the
hood.
The hood was newly designed after the introduction of the double blood bags (since 1993) and can be ob-
tained afterwards under order no. 75007614.
Rotor removal
In order to remove the rotor from the primary shaft, proceed as follows:
1. Remove the hood and put it in a safe place (do not place it in the holding device during removal of the
rotor).
2. Loosen the flanged nut with the 19 mm open jawed spanner in an anti-clockwise direction (see direction
of arrow stamp), whilst securely holding the rotor by the cross arm.
3. After one turn, there is an additional rotational resistance which has to be overcome by a further lever
pressure using the open jawed spanner.
4. Then, turn the primary shaft in a clockwise direction using the socket spanner until the rotor can be lifted
out.
5. The rotor must be held by two people on two opposing cross arms and carefully lifted out of the rotor
chamber.
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