Spare bulbs: 3W LED lamp
Spare fuse: 250V 1A delayed model, 5 X 20 fuse
8. Mounting the bulb
Never touch the surface of the bulb with your hand directly. Use gloves or a cloth when you mount the
bulb to avoid leaving fingerprints. Fingerprints or stains should be wiped off with a tissue moistened
with a small amount of alcohol. The fingerprints will etch on the bulb's surface and make the
brightness lower and life cycle shorter.
Please make sure the bulb's touching points are Ok as it will not light or short circuit if the bulb's
touching points are damaged. Insert the bulb's legs into the bulb holder firmly. The bulb will go out if its
legs have not been inserted into the holder firmly. Such Operation may cause short circuit or smoking.
9. Temperature for illumination
When you use the halogen bulb, there will be high temperature when the bulb is lightened, never
move the collector when the bulb is lightened. Do not touch the bulb within 30 minutes after it has
been gout out. Make sure the bulb has been be cooling enough time (at least 30 minutes) to avoid
scald.
Do not put fibre, papers and incendive things (eg. Gasoline, aether, methanol and ethanol) close to
the bulb.
10.Make sure to turn off the power supply before assembling
microscope, replacing bulb or fuse.
11.Observing with oil immersion
Using small amount of oil immersion is enough. The redundant oil will adhere to stage or
condenser and these will reduce microscope’s performance. Get rid of the redundant oil or clean the
lens by using aether or pure alcohol according to this instruction. Pay attention during process as
these things are incentive. The instruction you buy may not including some products mentioned in this
instruction. Safety has been considered during design while users still have the possibility to be
injured and the instruction to be damaged when improper operation made. Please pay much more
attention to read this instruction carefully before using and keep it properly to make sure it will be got
when it is necessary.