Loading The Rotor; Control And Display Elements; Symbols On The Control Panel; Keys And Setting Options - Hettich EBA 270 Operating Instructions Manual

10

Loading the rotor

Standard centrifuge containers of glass will not stand RCF values exceeding 4000 (DIN 58970, pg. 2).

Check the rotor for firm seating.

With swing-out rotors all rotor positions must be lined with identical hangers.

The rotors and hangers may only be loaded symmetrically. The centrifuge containers have to be distributed
evenly on all rotor positions. For authorised combinations see Chapter "Anhang/Appendix, Rotoren und
Zubehör/Rotors and accessories".
Rotor is evenly loaded

The centrifuge containers may only be filled outside of the centrifuge.

The maximum filling quantity for the centrifuge containers specified by the manufacturer must not be exceeded.

When loading the hangers and when the hangers are swivelling out while the centrifuge is running, no liquid may
enter the hangers or the centrifuging chamber.

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.
11

Control and display elements

See figure on page 2.
Fig. 1, F: Display and control panel
11.1

Symbols on the control panel

Rotation indicator. The rotation indicator lights up and rotates anticlockwise while the rotor is turning.
When the rotor is stationary, the status of the lid is displayed by symbols in the rotation indicator:
Symbol : Lid open
Symbol : Lid closed
Operator errors and occurring faults are indicated on the display (see Chapter "Faults").
11.2

Keys and setting options

 Speed
RPM x 100
A numeric value of 500 RPM up to the maximum rotor speed can be set. For maximum rotor speed,
see chapter "Anhang/Appendix, Rotor und Zubehör/Rotor and accessories". Preset in steps of 100
(RPM = displayed value x 100).
If the key
 Display the brake step.
 Running time
t
- Preset from 1 - 99 minutes, in 1 minute steps
- Continuous operation "--"
 Braking steps 0 or 1. Step 1 = short run-down time, Step 0 = long run-down time.
If the key
 Start centrifugation run.
START
AB2300DEENFRIT
or is kept pressed, the value changes with increasing speed.
or is kept pressed, the value changes with increasing speed.
Rev. 07
Not permitted!
Rotor is not evenly loaded
EN
29/66