Interface (Only For Centrifuge With Interface); Opening And Closing The Lid; Opening The Lid; Closing The Lid - Hettich ROTINA 420 Mode D'emploi

The following displays appear one after the other:
1. The centrifuge model
2. The program version
3. The rotorcode (rotor), the maximum rotor speed (Nmax) and the preset centrifuging radius (R) of the last rotor
that was recognized by rotor recognition.
4. OPEN OEFFNEN

Open the lid.
The centrifuge data of the last used program or program 1 will be displayed.

Remove the transport safety device (see instruction sheet on "Moving the equipment safely").
10

Interface (only for centrifuge with interface)

As an option, the device can be equipped with an RS232 interface.
The RS232 interface is labeled with the
The centrifuge can be controlled and data queried via this interface.
The LED in the key lights up during data communication.
PROG
11

Opening and closing the lid

11.1

Opening the lid

The lid can only be opened when the centrifuge is switched on and the rotor is at rest. If it cannot be
opened under these circumstances, see the section on "Emergency release".

Press the button
OPEN / STOP
extinguishes.
11.2

Closing the lid

Do not put your fingers between lid and housing.
Do not bang the lid shut.
If the left LED in the
lock goes into the basic position (opened).

Place the lid and lightly press down the front edge of the lid. The locking action is effected by motor. The left LED
in the button
OPEN / STOP
12

Installation and removal of the rotor

Rotor installation:
A

B

C

D

Removing the rotor:


AB4701DEENFRIT
IOIOI
symbol.
RS232
. The lid unlocks via the motor and the left LED in the pushbutton
button flashes, press the
OPEN / STOP
lights up.
Dirt particles between the motor shaft and rotor prevent the rotor from
having a perfect seat and cause it to run unsteadily.
Clean the motor shaft (C) and the bore of the rotor (A) and then apply a thin coat
of grease to the motor shaft.
Place the rotor vertically onto the motor shaft. The driver of the motor shaft (D)
must be in the groove of the rotor (B). The groove alignment is marked on the
rotor.
Tighten the clamping nut of the rotor by turning it in the clockwise direction
using the key included in delivery.
Check the rotor to make sure it is seated firmly.
Loosen the clamping nut by turning it in the counter clockwise direction up to the
lifting pressure point. After overcoming the lifting pressure point, the rotor is
released from the cone of the motor shaft.
Turn the clamping nut until the rotor can be lifted up from the motor shaft.
Rev. 12 / 04.2020
button so that the motor-driven lid
OPEN / STOP
EN
OPEN / STOP
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