e. Front-Panel Controls. Front-panel controls include an illuminated power
switch, run-brake switch, automatic timer, adjustable speed control, and tachometer. You
can continuously adjust speed over the range of 500 revolutions per minute (rpm)
(minimum) to a specific maximum, depending upon the rotor and shield configuration
f. Additional Safety Features. Additional safety features on the centrifuge
include a transparent, shatter-proof, polycarbonate cover equipped with a positive latch. A
latch interlock system prevents you from operating the centrifuge while the cover is open.
Once the cover is closed and latched and the centrifuge is operating, a zero speed control
switch prevents you from opening (unlatching) the cover until the rotor slows to less than 1
revolution per second. An external fuse, located on the back of the machine, prevents
damage to the centrifuge in the event of external power surges or internal shorts.
Refer to figure 1-1 for an illustration of the location of the controls on the centrifuge.
Figure 1-1. Operating controls.