Leica RM2245 - Page 67

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Leica RM2245
7. Troubleshooting
Problem Possible cause Corrective action
• Thebladeisdull.
• Thepressureplateisdamaged
or incorrectly adjusted.
• Clearance angleof theknife/
blade too small.
• Laterally displacethe knife
holder or insert a new blade.
• Insert a new pressure plateor
use a new knife holder.
• Methodically experimentwith
larger clearance angle settings
until you have found the optimum
angle.
2. Section compression
The sections are very com-
pressed, show folds or are
squeezed together.
• Thebladeisdull.
• Thespecimenistoowarm.
• Thesectioningspeedistoofast.
• Useanotherareaofthebladeor
a new blade.
• Cool thespecimen beforesec-
tioning.
• Reducethesectioningspeed.
3. "Stripes" in sections
For knife holder E
• Thereisanaccumulationofpar-
affin on the rear pressure plate
of the knife holder.
• Removeparaffinfromthisarea
on a regular basis.
4. Noises during sectioning
The knife "sings" when section-
ing hard specimens. The sec-
tions show scratches or chatter
marks.
• Thesectioningspeedistoofast.
• Theclearanceangleistoo
wide.
• Insufficientclampingofspeci-
men clamp and/or knife holder.
• Select a slower sectioning
speed.
• Methodicallyreducetheclear-
ance angle setting until you have
found the optimum angle.
• Checkallscrewandclampcon-
nections on the specimen holder
system and the knife holder. If
necessary, tighten the levers and
screws.
5. High blade consumption • Toogreatofasectioningforce
was applied.
• Adjustthesectioningspeedand/
or section thickness when sec-
tioning. Select a thinner section.