Microm HM 325 - Possible Sources of Errors - Cause and Removal

Rotary Microtome HM 325
MICROM International GmbH
Robert-Bosch-Str. 49
D- 69190 Walldorf 387821 - English
4-3 POSSIBLE SOURCES OF ERRORS – CAUSE AND REMOVAL
Problem Cause Removal
Thick-thin-sections
− Blunt knife/blade.
− Knife angle, therefore,
unfavorable clearance angle.
− Insufficient clamping on
specimen clamping and/or
knife carrier.
− Move knife and/or insert a new
one.
− Try clearance angle
adjustments, until an optimal
angle can be found.
− Check all screw and clamping
connections on specimen
clamping and knife carrier.
Tighten them, if necessary.
Compressions
− Blunt knife/blade.
− Specimen too warm.
− Unfavorable clearance angle.
− Cutting speed too high.
− Move knife and/or insert a new
one.
− Cool specimen
− Try clearance angle
adjustments until an optimal
angle can be found.
− Turn handwheel slower.
"Chatter" on sections
− Cutting speed too high.
− Unfavourable clearance angle.
− Insufficient clamping on
specimen clamping and/or
knife carrier.
− Turn handwheel slower.
− Try clearance angle
adjustments until an optimal
angle can be found.
− Check all screw and clamping
connections on specimen
clamping and knife carrier.
Tighten them, if necessary.
No feed is carried out anymore,
and therefore, no sections are
produced.
− Front end position has been
reached.
− Coarse feed wheel is blocked.
− Move specimen backwards by
turning the coarse feed wheel.
− Remove blockade on coarse
feed wheel.
Tight handwheel
- partly
- during the entire movement
− Debris and section waste
between microtome and base
plate.
− Dirty link block.
− Remove section waste and
clean microtome.
− Contact a service technician.
Note:
In case of malfunctions and/or service work, please turn off the instrument and contact your
local dealer.