Centrifugation Of Materials Or Mixtures Of Materials With A Density Higher Than 1.2 Kg/Dm; Emergency Release; Maintenance And Servicing - Hettich EBA 270 Operating Instructions Manual

EN
15

Centrifugation of materials or mixtures of materials with a density higher than 1.2 kg/dm

When centrifuging with maxim revolutions per minute the density of the materials or the material mixtures may not
3
exceed 1.2 kg/dm .
The speed must be reduced for materials or mixtures of materials with a higher density.
The permissible speed can be calculated using the following formula:
Reduced speed (n )
red
e.g.: maximum speed RPM 4000, density 1.6 kg/dm
1.2 kg/dm³
n = x 4000
red
1.6 kg/dm³
If in doubt you should obtain clarification from the manufacturer.
1.16

Emergency release

The lid cannot be opened during power failure.
emergency release has to be executed by hand.
For emergency release disconnect the centrifuge from the mains.
Open the lid only during rotor standstill.
Only the plastic release pin provided may be used for emergency release.
See figure on page 2.

Switch off the mains switch (switch position "0").

Look through the window in the lid to be sure that the rotor has come to a standstill.

Insert the release pin horizontally into the hole (fig. 1, A). Push the release pin in as far as possible, until the lid
can be opened when pressing down the pin.

Open the lid.
17

Maintenance and servicing

The device can be contaminated.
Pull the mains plug before cleaning.
Before any other cleaning or decontamination process other than that recommended by the manufacturer is
applied, the user has to check with the manufacturer that the planned process does not damage the device.

Centrifuges, rotors and accessories must not be cleaned in rinsing machines.

They may only be cleaned by hand and disinfected with liquids.

The water temperature must be between 20 – 25°C.

Only detergents/disinfectants may be used which:
 have a pH between 5 - 8
 do not contain caustic alkalis, peroxides, chlorine compounds, acids and alkaline solutions

In order to prevent appearances of corrosion through cleaning agents or disinfectants, the application guide from
the manufacturer of the cleaning agent or disinfectant are absolutely to be heeded.
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1.2
=
Greater density [kg/dm³]
3
RPM = 3464 RPM
In the event of a power failure the lid cannot be opened by
Rev. 07
x maximum speed [RPM]
3
motorAn
AB2300DEENFRIT