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Home Training Tools Ltd. 2005
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Tension collar
different levels. You will not be able to focus
every feature clearly at the same time.
8.
For higher magnification, turn the zoom knob
toward you. The image will move slightly out
of focus as you zoom, so you will need to
make minor focus adjustments each time you
stop.
Using the Binocular Head
To use the binocular head to the most
advantage, you must set the interpupillary
distance to match the distance between the pupils
of your eyes. You must also adjust the diopter to
compensate for focusing differences between
your two eyes. Each user of the microscope must
make these adjustments for his or her own eyes.
To do so, follow these steps:
1.
Focus the microscope on a small specimen in
the center of the stage plate.
2.
Focus your eyes on the specimen.
3.
Pull your eyes back from the eyepieces about
1”. In your peripheral vision you will see two
field view circles overlapping each other.
4.
Open or close the distance between the
eyepieces by twisting them apart or pushing
them together until the two circles merge
together and appear as one circle. The
interpupillary distance is set correctly when
you see just one field view circle.
5.
Close your left eye and turn the knurled
diopter band until the specimen is in focus for
your right eye.
6.
Close your right eye and bring the specimen
into sharp focus for your left eye by turning
the knurled diopter band on the left eyepiece.
Maintenance
Changing the Top Bulb
If your top microscope bulb burns out, follow
these steps to replace it:
1.
Obtain the correct 10-watt
halogen replacement bulb (our
item MI-BULB9) with reflector.
2.
Unplug your microscope from
the power supply and allow it
to cool before replacing the bulb.
3.
Unscrew the cap that covers
the bulb.
4.
Grasp the bulb and pull it
straight out from the socket.
Note: The glass reflector is part of the bulb
and comes out with it.
5.
Use a tissue or cloth to grasp the new bulb
and insert it into the socket.
Changing the Bottom Bulb
If your bottom microscope bulb burns out,
follow these steps to replace it:
1.
Obtain the correct 10-watt halogen
replacement bulb (our item MI-BULB8).
2.
Unplug your microscope from the power
supply and allow it to cool before replacing the
bulb.
3.
Remove the stage plate by
loosening the stage plate
screw until the plate can
be removed easily.
Remove the blue filter
located under the stage
plate.
4.
Pull the bulb straight out of its socket.
5.
Use a tissue or cloth to grasp the new bulb
and insert it into the socket.
6.
Replace the stage plate and secure it in place
with the stage plate screw.
Adjusting Tension
The focus tension is pre-adjusted by the
manufacturer, but if it falls out of adjustment, the
microscope head will drift down under its own
weight and the image will
move out of focus. The
tension adjustment collar
is located between the
microscope arm and the
focus knob on the left side
(when the stage is facing
you). To adjust the
tension, follow these steps:
1.
Turn the collar clockwise to tighten or counter-
clockwise to loosen. (Use a rubber band to
help you grasp the collar, or a small C-
wrench.)
2.
Tighten only enough to keep the stage from
drifting downward.
