Leica Biosystems CM1850 UV - Manual (Page 11)

11 Leica CM1850 UV – Cryostat
2.6 Removal of the microtome
• Prior to removing the microtome, turn the instrument off with the mains
switch and pull the mains plug.
• Prior to removing the microtome, bring the specimen head to the lower
position with the handwheel.
Otherwise the specimen head would rapidly fall down and might injure
the operator‘s hands, when taking out the microtome.
• Wear appropriate protective gloves to take the cold microtome out of
the cryochamber.
• Extended skin contact with cold instrument parts - risk of frost bite!
• The microtome must be entirely dry before reinstallation. Humidity inside
will condense and freeze in the cold cryostat and thus cause malfunc-
tions or damage.
• Do not use external heaters for drying the cryochamber. This can cause
damage to the cooling system!
• All components removed from the cryostat must be carefully dried be-
fore they are put back into the cryochamber
2.7 Maintenance
Replacement of the fuses
• Turn the instrument off with the automatic mains fuse and pull the mains
plug before replacing the fuses.
• Only use fuses of the same specification! For the required values, please
refer to Chapter 3 ‘Technical data‘. Using fuses other than those speci-
fied by the manufacturer may cause severe damage to the instrument!
Replacement of the lamp
• Turn the instrument off with the automatic mains fuse and pull the mains
plug, before replacing the lamp.
When removing / installing the microtome improperly or when chang-
ing the UVC lamp, the lamp can be destroyed. If this happens, the lamp
change must be completed by Technical Service. If any metallic mer-
cury is released, handle it carefully and dispose of it properly.
If both disinfection indicator lights are blinking alternately, the UV
tube must be replaced!
2. Safety