Note: When the equipment is disconnected from the net, the lid is automatically bloc-
ked until connecting the centrifuge again.
To open the lid manually without connecting the centrifuge, proceed as follows:
Remove the rubber caps located at both sides of the centrifuge (1.7) (SEE DRAWING).
Insert into the holes a thin wire and press the electromagnetic device at the same time.
The lid will open.
Put the adapters to be used and make sure they are well placed. Check that the adap-
ters swing.
Put the tubes into the tube holders and make sure they are well placed.
NOTE: Balance the centrifuge by using tubes with the same weight, shape and size and
put them in geometrically symmetrical positions. If it is necessary, use tubes filled with
water.
In a centrifuge it is very important the concept of weight so it is advisable to have a
balance to compensate the weight of the different tubes. This is absolutely necessary
because an upset of the rotor may produce vibrations that debilitate the centrifuge and
headstocks increasing the rate of broken tubes and producing a worse sedimentation.
Turn the centrifuge on by pressing the general power switch (1.4).
Speed adjustment
Nahita centrifuge Digimax 2705 presents a speed range from 100 to 5000 r.p.m. with
steps of 100 r.p.m. To select the desired working speed press ? ? buttons (2.2) and speed
will increase or decrease on display until reaching the desired value.
Time adjustment
Nahita centrifuge Digimax 2705 presents a time range from 1 to 99 minutes in steps of
1 minute. To select the desired time press ? ? buttons (2.4) and time will increase or decre-
ase on display until reaching the desired value.
Close de lid.
NOTE: Never turn the centrifuge on if the lid is open.
Press RUN (2.5), the centrifuge begins to operate.
On SPEED display (2.1) the speed value will increase until reaching the adjusted value.
When the rotor reaches the selected speed, the timer starts the count down; the remai-
ning operation time will be displayed on TIME display (2.3)
Note: When the centrifuge starts operating, the lid is blocked by an electromagnetic
device. Never force the lid to open if the rotor is still in movement.
Stop: when the selected time has passed the rotor speed begins to decrease.
Do not take the samples out until the rotor is completely stopped.
Pág. 4
Manual de instrucciones 52705010 Revisión 1 Marzo-07
3. ESPECIFICACIONES TÉCNICAS
Capacidad
4 adaptadores x 1 tubo de 250 mL (67x105 mm)
4 adaptadores x 2 tubos de 50 mL (28x100 mm)
4 adaptadores x 9 tubos de 10 mL (16x80 mm)
Velocidad
100-5000 r.p.m. (regulable)
F.C.R máx.
Tubos de 250 mL: 4420 g
Tubos de 50 mL: 4700 g
Tubos de 10 mL: 5000 g
Temporizador
1-99.99 min
Cabezal
Oscilante
Regulación de velocidad
Digital
Regulación de tiempo
Digital
Motor
Inducción
Peso
54 kg
Dimensiones
44x54x45 cm
Fusible
8A
Alimentación
220-240 V ± 50-60 Hz
2.1 Pantalla SPEED (velocidad)
2.2 Selector incremento/disminución velocidad
2.3 Pantalla TIME (temporizador)
2.4 Selector incremento/disminución tiempo
2.5 RUN
2.6 STOP
S T
S T
2.1
2.2
2.3
2.4
2.5
2.6
Version 1 March-07
Instruction manual 52705010 Page 17
CASTELLANO
ENGLISH
