Bright Instruments
32
2.2 CABINET CONTROLS CONT.
Refer to Figure 1.
2.2.2 MAINS SWITCH
The Mains switch is located at the back of the
instrument, it is used to connect the power
supply to the cryostat. Operate this switch to
switch the instrument on and off.
2.2.3 HANDWHEEL
For safety, the handwheel must be locked
whenever a specimen is being fitted,
manipulated or removed.
Depending on which model you have,
there are two types of handwheel locking
mechanism, for Base spec units the handwheel
is fitted with a locking lever which locks the
wheel (and therefore the specimen arm) in a
variety of positions.
On the High spec unit, the handwheel has a
locking pin to lock the handwheel position.
Low Spec
High Spec
Locking
Lever
Locking
Pin
2.2.4 QUICK FREEZER PLATE
Remove the frost elimination cover before
using the quick freezer plate. This plate runs
at or below the set chamber temperature
(typically 10ºC below chamber temperature)
and is useful for storage or pre-cooling of
knives etc. Although it is possible to freeze
fresh tissue on the quick freezer plate, it
is generally preferable to use a much
colder medium.
The temperature of the quick freezer plate
is displayed constantly on the main control
panel. Do not forget to replace the frost
elimination cover after using the quick freezer
plate, this helps prevent a build up of frost.
2.2.5 MOTORISED ADVANCE/REWIND
CAUTION:
To avoid mechanical damage,
before using the advance/rewind feature
set either the thickness to zero microns or
move the microtome head to the bottom of
its cutting stroke.
Move the head to its furthest back position
whenever is appropriate. The advance /
rewind control can also be used for fine
advance of the specimen. The feed indicator
on the front cover of the microtome shows
how much forward travel is available, blue at
the start position transitioning the red at the
end of travel.
Beginning
of travel
End of
travel
2. Operation Instructions
Cont.
