Drucker 642E Manuel de l'opérateur - Page 6

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Operation:
NOTE: Follow the initial setup procedure on page 4 before initial operation.
1.
Plug the centrifuge into an approved 115 Volt A.C., 60 Hz. outlet.
2.
Push the 'OPEN / STOP' button and then open the lid.
3.
Insert cushions (if needed) into the tube holders for the tube size you are using.
Refer to 'Tube Holder Configurations' (page 7) for assistance.
4.
Place the test tube samples into the tube holders. Be sure to follow the rules for
balanced loads.
5.
Close the lid and turn the lid knob clockwise to its complete stop position. The
'LATCHED' indicator light should turn on to indicate that the latch is closed
properly.
If the lid knob is not completely latched, the 'LATCHED' indicator light will not
turn on and the centrifuge will not operate!
6.
The timer has been set to a preset time of ten (10) minutes. To display or
change this time setting, refer to page 5.
7.
Turn on the machine by pushing the 'START' button on the control panel.
8.
The centrifuge should begin to spin. The 'RUNNING' indicator light should
illuminate.
IF A PROBLEM IS FOUND DURING A SPIN THAT REQUIRES THE CENTRIFUGE TO
SHUT DOWN, PRESS THE 'OPEN / STOP' BUTTON!
9.
The 'RUNNING' indicator light will begin to flash when one minute remains.
10. After time has elapsed, the 'RUNNING' indicator light will extinguish and the
rotor will slow to a complete stop.
11. The 'UNLOCKED' indicator light will illuminate and the locking mechanism will
disengage allowing entry into the rotor chamber. If it does not, refer to page 10
on troubleshooting.
12. Turn the lid knob counterclockwise and open the lid.
13. Remove the samples.
14. If the machine re–locks before the samples are removed, press the
'OPEN/STOP' button to unlock the lid for an additional fifteen (15) seconds.
BALANCED LOADS
Your centrifuge must contain a balanced load in order to work properly.
Use the following rules when loading the rotor.
Spinning balanced loads will extend the life of the machine and
produce better results.
1.
Opposing tube holders must be identical and must contain the same
cushion, or none at all.
2.
Opposing tube holders must be empty or loaded with equally
weighted samples.
3.
If an odd number of samples is to be spun, fill a tube with water to
match the weight of the unpaired sample and place it across from this
sample.
Page 6
Tube Holder Configurations:
The Model 642E is capable of spinning test tubes up to 17 mm x 100 mm with
its horizontal rotor. Use the following chart and drawing to determine which tube
holder and cushion combination should be used with your application.
DIRECTIONS:
1.
Compare the tube to be spun with the three boxes shown below.
2.
Find the box that most closely matches the tube's length. NOTE: The
tube length with its stopper or cap must be shorter then the chosen
box or the tube will not fit properly in the tube holder.
3.
Match the letter from the chosen box with one of the configurations shown.
For Example: A tube is found to be as long as box B. Accordingly, we
can use a 100 mm tube holder with a 1525 cushion or a 75 mm tube
holder with no cushion, (configurations B1 or B2).
A.
A.
RED
B.
C.
* This part is available as an accessory. Contact The Drucker Diagnostics for assistance.
100 mm
Tube Holder
B1.
B2.
75 mm
RED
GREEN
Tube Holder
C.
GREEN
100 mm Tube
Holder with
1525 cushion*
Page 7
75 mm Tube
Holder
with 1525
cushion*