Iris Sample Processing StatSpin® CritSpin Microhematocrit System - Manual (Page 8)

4
Section
3
Operating Instructions
Opening and Closing the Cover
The centrifuge’s electrically operated cover interlock mechanism prevents operation until the cover is
completely closed and latched, and prevents the cover from being opened while the rotor is turning.
When the cover is completely closed and locked an operating cycle can be initiated.
The centrifuge is also equipped with a manually operated latch that holds the cover down after
spinning is complete. The interlock is automatically released at the end of the operating cycle or by
pushing the stop/open button. Squeeze the black latch pieces together to open cover.
Cover Interlock By-pass
The electronically operated cover interlock mechanism can be released manually by inserting the
straightened end of a large paper clip or similar object into the small hole in the center of the front
membrane panel. Manually push the lock lever inward about one inch (25mm) to release the
interlock mechanism if the stop/open button does not release the cover.
CAUTION - The cover interlock bypass is designed for emergency use only. If the
equipment is not used properly, safety may be compromised.
Installing the Rotor
The CritSpin is shipped with the rotor contained in accessory box.
CAUTION - The rotor (RH12) has a finite lifespan that is dependant on usage.
Replace rotor after 18,000 cycles or approximately 800 hours of operation. Cracks or
swelling are signs of fatigue, replace immediately.
1. Remove the rotor from accessory box.
2. Install rotor by pressing rotor firmly in a downward motion onto the rotor-holder of the CritSpin.
The rotor bottom fits over a rubber O-Ring on the rotor-holder. The Figure below shows a rotor,
(cross-section) in place on the rotor-holder. As the rotor turns, the O-Ring is moved outward by
centrifugal force enhancing the frictional coupling between the rotor-holder and the rotor.
3. If the rotor is left in place and only the tubes are exchanged between runs, be certain to bottom
the rotor on the rotor-holder before spinning another sample. Failure to properly seat the rotor
each time may result in the rotor becoming loose during centrifugation.
CAUTION – Do not leave the rotor on the rotor-holder when the StatSpin is not in use
for an extended period of time. Doing so may compress the O-Ring and decrease its
ability to hold the rotor.