Owner's manual

35
In the case of the Centrifuge 5702 RH, we are dealing with a benchtop centrifuge with a regulated heating and cooling
system. The Centrifuge 5702 RH can be refrigerated or heated precisely within a temperature range from – 9 °C to
+ 42 °C. By way of preprogrammed temperature profiles, it is possible to set optimized temperature arcs for the available
swing-bucket and fixed angle rotors. This enables exact temperature control even for sensitive samples.
Setting the preprogrammed temperature profiles:
Pressing the Fast Temp key while the centrifuge lid is open results in the display of the set rotor with the corresponding
temperature profile. Using the arrow keys it is possible to select other temperature profiles. The displays appearing stand
respectively for the following rotors:
Pull the power plug and wait for the rotor to come to a stop (this may take as long as 5 minutes!). Emergency lid release
on underside of device by pull cord: In front of the front right suction foot there is a small white plastic cap in the base
plate (see "E" in figures 1 and 2, cover flap). Remove the cap and draw the cord out straight downward.
Please be sure to later make certain that the cord is pushed back completely into the housing before closing the lid.
Press the plastic button into the baseplate again.
The fuse box is located under the main power plug. The fuse box can be removed from the rear. The two fuses can be
replaced (see Ordering information).
Display Rotor
ro F 35 Fixed-angle rotor F-35-30-17
ro F 24 Fixed-angle rotor F-45-24-11
ro F 18 Fixed-angle rotor F-45-18-17-Cryo
ro A4 rE Swing-bucket rotor A-4-38 with rectangular buckets
ro A4 ro Swing-bucket rotor A-4-38 with round buckets
ro A8 Swing-bucket rotor A-8-17
ro AL L General temperature profile for all rotors
After 5 seconds a selected temperature profile will be automatically adopted and the display will return to the
operating status.
temp
–
The temperature nominal value can be set using the arrow keys. During the rest
period of the centrifuge, the current temperature and the temperature nominal value
are displayed alternately (current temperature short, temperature nominal value
long). Only the current temperature is displayed during the run. A deviation of the set
temperature nominal value of more than ± 3 °C is signalled during the run by a
blinking temperature display
fast temp
–
Starts a temperature control run in order to reach the preselected temperature as
quickly as possible. During the temperature control run, "FA" appears in the display,
as well as the current temperature and the optimum rotational speed. Refrigeration
runs at less than room temperature are automatically carried out with a rotor-
specific, low rotational speed, while heating runs are carried out initially with a
maximum and then with a nominal rotational speed. For runs with precisely
controlled temperatures, we recommend starting a short Fast Temp run immediately
prior to centrifugation. This prevents an overshooting of the temperature in the rotor
chamber, such as can sometimes occur after longer standby periods.
Stand-by
Heating and
refrigeration
–
The rotor chamber is heated or cooled to the selected nominal temperature both
before and after a run with the lid closed. Because the rotor does not thereby rotate,
the temperature adjustment occurs slowly. The current temperature in the rotor
chamber is displayed. For runs with precise temperature control following longer
standby periods, we recommend starting a brief Fast Temp run immediately prior to
centrifugation. This prevents potential overshooting of the temperature in the rotor
chamber.
3.19 Heating and refrigeration (5702 RH)
3.20 Opening the centrifuge in case of power failure
3.21 Device fuses
Operation
3 Operation
3