Installation And Removal Of The Rotor; Loading The Rotor; Making Angle Rotors Aerosol-Proof; Control And Display Elements - Hettich ROTINA 35 Handbuch

8

Installation and removal of the rotor

•
Clean the motor shaft (C) and the rotor drilling (A), and lightly grease the motor shaft
afterwards. Dirt particles between the motor shaft and the rotor hinder a perfect seating
A
of the rotor and cause an irregular operation.
•
Place the rotor vertically on the motor shaft. The motor shaft dog (D) has to fit in the
rotor slot (B). The alignment of the groove is labelled on the rotor.
B
•
Tighten the rotor tension nut with the supplied wrench by turning in a clockwise
direction.
C
•
Check the rotor for firm seating.
D
•
Loosening the rotor: Loosen the tension nut by turning in a counter clockwise direction,
Fig. 4
and turning until the working point for lifting. After passing the working point for lifting
the rotor is loosened from the motor shaft cone. Turn the tension nut until the rotor is
able to be lifted from the motor shaft.
9

Loading the rotor

•
With swing-out rotors all rotor positions must be lined with hangers.
•
The rotors and hangers may only be loaded symmetrically. For authorised combinations see Chapter
"Anhang/Appendix, Rotoren und Zubehör/Rotors and accessories".
•
In containers with rubber inserts, the same number of rubber inserts must always be among the centrifuge
containers.
•
Always fill the centrifuge containers outside of the centrifuge.
•
No liquid should be allowed to enter the centrifugal chamber during filling and swinging out of the hangers.
•
In order to maintain the weight differences within the centrifuge container as marginal as possible, a consistent
fill level in the containers is to be heeded.
•
The weight of the permissible filling quantity is specified on each rotor. This weight may not be exceeded.
10

Making angle rotors aerosol-proof

To guarantee aerosol-proofness, the lids of aerosol-proof angle rotors must be screwed
down using the spanner provided.
To screw down or loosen the lid, insert the provided spanner through the hole in the lid, see
Fig. 5.
For available aerosol-proof angle rotors, please see chapter "Anhang/Appendix, Rotoren
Fig. 5
und Zubehör/Rotors and accessories".
11

Control and display elements

Please turn to the rear side of this cover sheet.
Fig. 2, Fig. 3: Display and control panel
11.1

Control panel symbols

Unbalance display. The unbalance display lights up if the permissible weight difference within the rotor
loading has been exceeded.
Rotation display. The rotation display lights up during the centrifugation run as long as the rotor is turning.
Lid display. The lid display lights up if the lid is closed and locked. During the centrifugation run the lid
display is extinguished.
Operating errors or any occurring disturbances are symbolised in the display (see Chapter "Faults").
11.2

Control panel pushbuttons (keys)

Selection control key for selection of specific parameter.
The subsequent parameter is selected by every further keystroke.
By pushing the arrow keys the value of a previously selected parameter is increased or decreased. By
keeping an arrow key depressed the value is increased or decreased with increasing speed.
Start the centrifugation run. The rotation display
START
Acquisition of input and changes.
Stop the centrifugation run.
STOP
The rotor runs down with pre-selected brake step. The LED in the key lights up until the rotor stops.
Pushing the key twice triggers the EMERGENCY STOP.
Selecting the RCF display.
RCF
The LED in the key lights up.
lights up.
EN
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