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and the rotor stopped. If the lid remains locked after this and will not
unlock, the electronics may have been damaged. Contact Drucker
Diagnostics for further assistance. To access the rotor chamber, follow
the procedure on Page 12, "Emergency Rotor Chamber Entry".
Problem: The run time is not set to the desired length.
Solution: Check the run preset by following the instructions on page 8. If
the preset is not the desired length, follow the procedure on the same
page to change the run preset time.
E
R
C
MERGENCY
OTOR
HAMBER
In the event of power failure, it may be impossible to unlock the lid by
conventional means. In this case, entry into the rotor chamber may be
made by removing the latch label and using a
pen to manually disengage the locking
mechanism (see photo). Pull the mechanism
towards the control panel and then unlatch
and open the lid. If the unit is damaged,
contact your authorized dealer or Drucker
Diagnostics.
C
T
ALIBRATION
ESTING
It is recommended that the top speed be tested every two years for
continued safe operation. Contact Drucker Diagnostics for further
information or testing availability.
S
AFETY
The Model 642E complies with US, Canadian, and European Safety standards.
Lid Safety Switch: The Model 642E lid is secured to the top of the cabinet
by a latching knob and pawl system. When the knob is rotated clockwise,
the pawl grips the underside of the cabinet opening and prevents the lid
from opening. A mechanical stop positions the pawl and prevents it from
rotating completely. When rotated to the stop position, the pawl makes
contact with a micro–switch mounted underneath the cabinet top. The lid
safety switch prevents the centrifuge from operating while the lid is open.
An indicator light on the front of the machine will light up when the lid
has been latched properly.
Lid Safety Interlock System: In addition to the Lid Safety Switch, the
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E
NTRY
WARNING: For the safety of both the operator and service
personnel, care should be taken when using this centrifuge if
handling substances that are known to be toxic, radioactive or
contaminated with pathogenic microorganisms. When Risk Group II
materials are used, (as identified in the World Health Organization
"Laboratory Bio-Safety Manual"), a Bio-Seal should be employed.
The Bio-Seal accessory for the model is the non-aerosol shield cap
with appropriate tube holders (contact Drucker Diagnostics to
purchase). In the event that materials of a higher risk group are
being used, more than one level of protection must be provided.
The use of flammable or explosive materials as well as those materials
which have a vigorous chemical reaction is prohibited.
For your safety and the durability of your machine, never transport or
store centrifuge with tube holders inside machine.
Users should also comply with the specimen receptable
manufacturer's specific instructions for use, in addition to any other
protocols established by the testing organization.
M
D
ODEL
ESCRIPTION
The Model 642E is a continuous-duty, electronically-controlled horizontal
centrifuge with a lid safety interlock system. The unit is controlled by an
electronic push–button timer that has been preset for ten (10) minutes,
for precise spin times and ease of use. Samples can be safely viewed
through the transparent lid. Entry into the machine is restricted during
operation by the safety interlock system. The Model 642E features a
lighted control panel that displays the status of the machine, easily
viewable from a distance.
For warranty information, see page 2 of this manual.
I
U
:
NTENDED
SE
General purpose laboratory centrifuge, intended for the density-based
separation of fluids through centripetal acceleration.
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