Fisher Bioblock Scientific Stemi 1000, Operating Manual

Page: 61 / 68

Stemi 1000, Stemi 2000, Stemi 2000-C
B 40-002 e 12/98 4-1
4 Care and troubleshooting
4.1 Care
Care of the stereo microscope is limited to the following:
•
Cover the unit with the dust cover after every use.
•
Do not place the unit in a humid room.
•
Cover open tubes with dust caps.
•
Remove dust from optical surfaces with a rubber blower or with a natural hair brush. Degrease the
brush in alcohol and then dry it. Remove stubborn soiling and fingerprints with a dust-free cloth or
leather.
•
Use commercially available optical and spectacle cleaning cloths to remove extreme soiling (e.g.
fingerprints) from optical surfaces; if necessary, moisten cloths lightly with petroleum ether. If neces-
sary, clean the front surfaces of lenses with petroleum ether, but do not use any alcohol.
Pay attention to the following notes when using the Stemi in moist and warm climates:
•
Store the Stemi in bright, dry and well ventilated rooms with a humidity less than 65 %; store
particularly sensitive modules and accessories such as lenses and eyepieces in dry cabinets.
•
When storing the microscope or its parts in closed receptacles for longer periods of time, fungi can
largely be avoided by placing absorbent substances soaked in fungicide in the receptacles.
IMPORTANT Fine mechanical and optical devices are always at a risk of fungus affection under the
following conditions:
•
relative humidity > 75 % for more than three days at temperatures from + 15
°
C to
+35
°
C.
•
placing them in dark rooms where there is no movement of air and
•
in the event of dust deposits and fingerprints on optical surfaces.