Leica CM1860, Instructions For Use Manual

Page: 70 / 108

70
Version 2.0, Revision N
Troubleshooting
8
Problem Cause Remedy
Specimen disc cannot be
removed.
• Moisture on the underside
causes the specimen disc to
freeze to the freezing shelf or
specimen head.
• Apply concentrated alcohol to
the contact point or heat the
specimen head.
Cryostat non-operational. • Power plug not properly
connected.
• Check if power plug is properly
connected.
• Circuit breaker is switched off. • Move the switch back to the
upper click stop.
Insufficient cooling capacity or
none at all.
• Compressor defective. • Call technical service.
• Refrigeration system leak. • Call technical service.
• Inappropriate site conditions. • Check installation site
requirements (
→
P. 22 – 4.1
Installation site requirements) .
• Air inlet opening of the
condenser dirty.
• Clean air inlet opening.
Scraping noise at the slot cover
of the microtome.
• Friction between the slot cover
and the microtome housing.
• Apply cryo oil to the slot cover
and distribute it by moving the
handwheel or using a clean
cloth.
Both disinfection indicator lights
flashing alternately.
• UVC radiation provided by UVC
tube no longer sufficient for
disinfection.
• Replace UVC tube following the
manufacturer’s instructions.
Blade/Knife holder base can not
be clamped tightly.
• Insufficient clamping force of
the t-piece.
• Adjust the clamping force of
the t-piece (
→
P. 45 – Adjust
the clamping force of the
t-piece) .
8.3.1 Changing the battery
The battery is exchanged during routine maintenance.
If the customer has decided against a service contract, the battery must be replaced after 7 years at the
latest. All settings (time, defrost time, section thickness etc.) are lost when the instrument is switched
off.
There is no danger for the instrument. However, the customer must re-enter the setting values when
switching the instrument on for the first time after changing the battery.