LW Scientific M24 - Manual (Page 3)

P. 770.270.1394 F. 770.270.2389 865 Marathon Parkway Lawrenceville GA 30046
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Reading Hematocrits
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Because of the safety issues with high g-forces in a centrifuge, it is recommended that rotors be inspected every 6 months for
corrosion and fatigue. If there is any indication of wear, the rotor should be removed from service. Contact LW Scientific for return
instructions, so the rotor can be evaluated by an LW Scientific technician for repair or replacement. It is also recommended that
after 2 years of service rotors be returned to LW Scientific for inspection. Following these procedures will ensure safety of lab
personnel as well as extend the life of the centrifuge.
Your M24 includes a Reader Disc, which allows hematocrit tubes to be directly read from the rotor.
After rotor is stopped, remove the cover plate by unscrewing the chrome thumbscrew and lifting the cover plate
straight up.
Place the reader disc over the hematocrit tubes, and adjust the disc until the 0% line is lined up with the bottom of the
fluid in the tube to be read.
While keeping the 0% line positined at the bottom of the fluid, turn the disc until the 100% line aligns with the top of
the fluid.
Read the separation line in the middle for your hematocrit result. Follow the same steps to read each tube.
Light comes on but will not spin: Check to make sure the lid safety switch (near back right lid hinge) is engaged.
With the power on and the timer set, depress the button with your finger. If the rotor spins, turn the safety switch
button counter-clockwise to raise the height and allow it to contact the lid when closed.
No spin, no light: Confirm that your power source is working. Check the 8 amp fuse and replace if necessary.
(A good fuse will have an intact metal filament through the center; a burnt fuse will have a broken filament.
Read the separation line in the middle for your hematocrit result. Follow the same steps to read each tube.
Troubleshooting