Leica Biosystems CM3050 S - Manual (Page 15)

15 Leica CM3050 S – Cryostat
2. Safety
2.3.11 Removing/reinstalling the microtome
• Before removing the microtome:
• Switch instrument off.
• Unplug from mains.
• Place handwheel grip in lowest position and
lock.
-->
When removing the microtome,
the specimen head must always
be lok-ked in the lowest position.
Otherwise the upper part of the slot
cover might be bent and consequently
damaged!
• When removing the microtome:
• Wear gloves when removing the micro-
tome while it is still frozen.
--> Risk of frost bite!
• On instruments with specimen cooling:
do not distort the refrigerating tube!
If distorted it might break, causing ex-
tremely cold refrigerant to escape.
--> Risk of frost bite!
• Before reinstalling the microtome:
• Microtome must be completely dry.
-->Humidity in the interior of the micro-
tome freezes and causes microtome mal-
functions and/or damage to the micro-
tome.
• All accessories/tools removed from the
cryochamber must be thoroughly dry be-
fore putting them back into the chamber!
--> Risk of icing!
2.3.12 Display message ‘Dry microtome’
• If the error message ‘Dry Microtome’ is dis-
played in control panel 1, the following has
happened:
• Cryochamber refrigeration has been in-
terrupted for an extended period of time
(e.g. power failure), causing the chamber
temperature to rise into the positive dig-
its.
• If this message appears, do not switch on
the instrument but remove the microtome
from the chamber, disinfect, if necessary,
and dry thoroughly before reinstalling it
into the chamber (see chapter 7.1 to 7.5).
2.3.13 Maintenance
• Only technical service engineers authorized
by Leica may access the internal compo-
nents of the instrument for service and re-
pair.
• The fluorescent light lamp (chamber illumi-
nation), unless broken or splintered, can be
replaced by the user:
• Switch off mains switch!
• Unplug the instrument from mains!
• If the lamp is broken or splintered:
Have lamp replaced by Leica Technical
Service!
--> Risk of injury!
• Use only those replacement lamps that cor-
respond to technical specification (see
chapter 4.2 ‘Technical Data’).