Changing The Lamp; Changing The Fuse - 3B SCIENTIFIC PHYSICS 500 Manual De Instrucciones

dark between these positions. In contrast, ob-
jects that are isotropic and not birefringent re-
main dark in all positions.
4.3 Changing the lamp and fuse

4.3.1 Changing the lamp

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Turn off the power switch, unplug the mains
plug and let the lamp cool down to avoid be-
ing burnt.
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For safety reasons, remove the eyepiece.
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To change the lamp lay the microscope on
its back to reach the lid on the bottom side.
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Loosen screw C of the lamp socket and
push it outwards so that it is in the position
shown in Fig.1.
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Loosen screw A and open the cover.
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To remove the halogen lamp, use a cloth or
similar material. Do not touch the bulb with
the bare hand.
•
Lift out the halogen lamp and replace it with
a new one.
•
Close the cover and secure it with the
screw.
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Push the lamp socket back into the original
position and tighten screw C.
C
B
A
Fig. 1 Lamp socket cover: A - knurled screw, B - ven-
tilation slots, C - securing screws of lamp-holder

4.3.2 Changing the fuse

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Turn off the power switch and unplug the
mains plug.
•
Unscrew the fuse holder on the back of the
stand base with a screwdriver.
•
Replace the fuse and reinsert the holder in
its socket.
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
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Subject to technical amendments
© Copyright 2013 3B Scientific GmbH
5. Storage, cleaning and disposal
Keep the microscope in a clean, dry and
dust free place.
When not in use always cover the micro-
scope with the dust cover.
Do not expose it to temperatures below 0°C
and above 40°C and a max. relative humid-
ity of over 85%.
Always unplug the mains plug before clean-
ing or maintenance.
Do not clean the unit with volatile solvents or
abrasive cleaners.
Do not disassemble objective or eyepieces
to attempt to clean them.
Use a soft linen cloth and some ethanol to
clean the microscope.
Use a soft lens tissue to clean the optics.
The packaging should be disposed of at
local recycling points.
Should you need to
dispose of the equip-
ment itself, never throw
it away in normal do-
mestic waste. Local
regulations for the dis-
posal of electrical
equipment will apply.