4 loading a fixed-angle rotor, Loading a fixed-angle rotor, Oper at ing man u al – Eppendorf Concentrator plus (New Design) User Manual
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Concentrator plus/Vacufuge® plus — Operating manual
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4. mode/vent: select V-AQ, V-AL or V-HV mode.
5. Close the lid of the device.
6. Press start/stop to start the warm-up phase.
•
The device lid is locked, and the green lid indicator lamp goes out.
•
The rotor starts up.
•
At 1,000 rpm, the vacuum pump switches on, and the vac indicator lamp lights up.
•
The vent valve is closed.
•
The rotor accelerates to the end point of 1,400 rpm.
•
On the display, the colon of the time display flashes while the rotor is turning.
•
The remaining run time is displayed in hours and minutes.
After the warm-up phase is completed
•
The device stops automatically.
•
During braking the elapsed concentration time is displayed flashing.
•
The rotor chamber is ventilated so that the pressure in the chamber increases slowly.
•
After two seconds, the vacuum pump is switched off, and the vac indicator lamp goes out.
•
Then the device brakes.
•
When the rotor has come to a standstill, the lid indicator lamp lights up.
•
The lid can be opened.
5.3.4
Loading a fixed-angle rotor
The following notes apply to fixed-angle rotors. Loading the rotor A-2-VC is described in the
following chapter (see Loading a swing-bucket rotor on p. 29).
Proceed as follows when loading the fixed-angle rotor:
1. Check the maximum payload (tube and content) per rotor bore. Detailed information can be
found in this operating manual (see Rotors on p. 11).
2. Only load rotors with the tubes intended for this purpose.
3. Insert open tubes opposite each other in pairs into the rotor bores. For symmetrical loading,
tubes that are opposite each other must be of the same type and contain the same filling
quantity.
In order to minimize weight differences between filled sample tubes, we recommend taring
with a scale. This will reduce wear on the drive and cut running noise.
CAUTION!
Risk of injury from unsymmetric loading of rotors.
Load rotors symmetrically with identical tubes and/or buckets and plates.
Only load adapters with suitable tubes and/or plates.
Always use tubes and/or plates of the same type (weight, material/density and volume).
Ensure that tubes that are located opposite each other contain liquids with the same rate of
evaporation. Otherwise an imbalance can occur and the concentration may automatically
stop.
Check for symmetric loading by balancing the adapters and tubes and/or plates used with
scales.
The device automatically detects imbalances during operation and stops the run immediately with
an error message and a signal tone. Check the load, balance the tubes and restart the run.
CAUTION!
Risk from damaged or overloaded tubes!
When loading the rotor, note the safety instructions with regard to risks from overloaded or
damaged tubes (see Warnings for intended use on p. 15)
EN
Oper
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