Neoprene Gasket
Exhaust Holes
Drive Shaft
Neoprene Boot
Neoprene Gasket
Thermistor
Drive Shaft
Neoprene Boot
Refrigerated
Nonrefrigerated
1-7
Description
Figure 1-2. Interior View of the Centrifuge
Nonrefrigerated models only—During centrifugation, the rotor move-
ment draws air through the filtered air-intake ports in the door into the
chamber bowl, where it circulates around the rotor. Holes in the side
of the bowl allow air to flow out to the exhaust ports beneath the
centrifuge. This air flow provides cooling for the rotor.
DRIVE
The direct-drive motor has permanently lubricated, sealed bearings.
A tie-down screw (or rotor knob) secures the rotor to the drive shaft.
The resilient suspension ensures that loads will not be disturbed by
vibration, and prevents damage to the drive shaft if an imbalance
occurs during centrifugation.
REFRIGERATION SYSTEM (Refrigerated Models Only)
A refrigeration compressor circulates CFC-free refrigerant through
copper tubing wrapped around the chamber bowl, which is insulated
to increase refrigeration efficiency. A thermistor regulates the
compressor to maintain chamber temperature to ±2°C of set
temperature.
