6
CARE AND MAINTENANCE OF MICROSCOPES
I. WARNING
: For your own safety, turn switch off and remove plug from power source before
maintaining your microscope. If the power-cord, AC power converter, recharger, or any of the
supply cords are worn, cut or damaged in any way, have it replaced immediately to avoid shock or
fire hazard.
II. OPTICAL MAINTENANCE
A.
Do not attempt Do not attempt to disassemble any lens components. Consult a microscope
service technician when any repairs not covered by instructions are needed. Prior to cleaning
any lens surface, brush dust or dirt off lens surfaces using a camel hair- brush. Or use air to
blow dust and lint off surfaces. Use of compressed air in a can, available at any computer
supply store, is a good source of clean air.
B.
Do not remove eyepieces or objective lenses to clean. Clean only the outer lens surface.
Breath on lens to dampen surface, then wipe with lens paper or tissue or use a cotton swab
moistened with distilled water. Wipe lenses with a circular motion, applying as little pressure
as possible. Avoid wiping dry lens surface as lenses are scratched easily. If excessive dirt
or grease gets on lens surfaces, a small amount of distilled water or Eyeglass lens cleaner
can be used on a lens tissue. To clean objective lenses, do not remove objectives from
microscope. Clean front lens element only, following same procedure. NOTE: Fingerprints or
other matter on the front lens element of the objective lens is the single most common reason
that you will have difficulty in focusing the microscope. Before having costly servicing done,
or before returning for “warranty repair”, make certain to examine the front lens element with
a magnifying glass or eye loupe for the presence of such contaminants. If a microscope is
returned for warranty repair, and it is determined that such contaminants are the problem, this
is not covered under warranty and an estimate for cleaning will be submitted for cleaning.
III. MECHANICAL MAINTENANCE
A. Rack Stop (compound microscopes only): Rack stop screw has been pre-adjusted at the
factory and should not require re-adjustment. However, if you do attempt re-adjustment of
rack stop use the following procedure. Locate rack stop as shown on drawing of your particular
model. Loosen locking nut by turning counter clockwise that should allow you to loosen rack
stop screw by rotating counter clockwise.
a.
Models with fine focus adjustment require setting it at mid-range, then using coarse focus
knobs focus on standard slide until sharp image is obtained.
B.
Rotate rack stop screw in clockwise direction until tight. Lock into position with the locking
nut.
IV. VIEWING BODY OR STAGE DRIFT
: Coarse focus tension adjustment collar prevents the viewing
body or stage from drifting down from its own weight and causing the image to move out of focus.
This has been adjusted at the factory, but over the course of time it may require adjustment. It is
recommenced that you leave the tension adjustment as loose as possible for ease of focusing, yet
not so loose that it permits viewing body or stage to drift out of focus on its own weight.
A. Mid range focusing Models S71000A and S71000B do not require adjustments for stage drift.
B. Coarse focus only and coarse focus with fine focus models have a tension adjustment collar
located between arm and coarse focus knob on left side of microscope. Use a small jewelers
screwdriver or use supplied 0.90 “L” hex wrench, loosen the setscrew located in only one of
the four holes on tension adjustment collar. Turn collar clockwise to tighten tension, counter-
clockwise to loosen tension. Use of a wide rubber band will provide a better grip on the tension
adjustment collar. After adjusting, tighten the setscrew to lock collar in place.
C.
Coaxial coarse and fine focus models have the tension adjustment knob located between
stand and coarse focus knob of microscope (on right side with arm facing user). Tighten
tension of coarse focus knobs by turning tension adjustment knob in a counter clockwise
direction.
Содержание S7001B
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