Horizon 642B Operator's Manual
Operator’s Manual
Model 642B • Laboratory Centrifuge
P/N 03-0-0002-0078 Rev. B
Page 2
Model Description:
The Horizon Model 642B is a continuous-duty, horizontal centrifuge.
The unique rotor design allows for horizontal operation without the
need for any extra parts beyond tube carriers.The unit is controlled
by a mechanical timer settable from 1 to 30 minutes. Samples can be
safely viewed through the transparent lid. In the event that the lid is
opened during a run, the power to the motor is disconnected.
For warranty information, turn to page 12.
* The rotor and rotor accessories are rated for a rotation frequency of 4,000 RPM.
Table of Contents
Model Description pg. 2
Supplied Equipment pg. 2
Features pg. 3
Specications pg. 3
Setup Location and Procedure pg. 4
Operation pg. 5
Load Balancing Instructions pg. 5
Tube Holder Congurations pg. 6
Rotor Removal and Installation pg. 7
Care and Maintenance pg. 8,9
Safety pg. 9
Troubleshooting pg. 9
Calibration and Ground Testing pg. 9
Replacement Parts pg. 10
Available Accessories pg. 10
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 identied
in the World Health Organization “Laboratory Bio–Safety Manual”), a Bio–Seal
should be employed. 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 ammable
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.
Supplied Equipment*:
The following items come standard with each Horizon centrifuge:
1. One (1) six–place horizontal rotor p/n 7786061
2. Six (6) 100mm tube holders p/n 7713031
3. Six (6) 75mm tube holders p/n 7713033
Optional Accessories: (not shown)
0.25” tube cushions, p/n 9150
1.0” tube cushions, p/n 1525
1.
2.
x 6
Page 11
x 6
3.
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