Section 2
SYSTEM DESCRIPTION
2.1 COMPONENTS
The QBC Capillary Centrifuge is shipped with an external plug-in power pack that supplies the required direct
current (D.C.) voltage to power the motor, circuit board and other internal systems of the instrument.
2.2 CENTRIFUGE DESCRIPTION
The QBC Capillary Centrifuge is a compact, low-profile unit measuring less than 13 centimeters (5.1 in.) high
with cover down, and housed in a sturdy plastic case. As shown in Figure 2-1, the centrifuge incorporates a
20-place rotor, mounted to the shaft of a brushless D.C. motor. In addition to shock-mounting of the motor to
minimize vibration, the centrifuge rests on four suction feet for added stability. A protective metal cover, which
threads onto the motor shaft, keeps the spinning tubes snugly in place on the rotor. The hinged top lid with safety
latch provides a housing or shield around the rotor during operation.
Electrical power to the centrifuge is controlled by a momentary ON/OFF power button located on the front
deck. Before the motor will start, the top lid must be closed and latched. Once a spin cycle has started, a safety
interlock prevents the lid from being opened until the rotor brakes to a stop. The spin cycle is controlled by an
electronic timer on the main circuit board. Spin time is fixed at 5 min.
4
Lid Latch
Lid Assembly
Power
Input Cable
Rotor Cover
Rotor
Head Nut
Safety
Interlock
Switch
ON/OFF
Button
Green
Speed LED
Yellow
Power LED
Figure 2-1. Features and Controls of QBC Capillary Centrifuge.
Summary of Contents for QBC 425740
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