5
MAINTENANCE
WARNING: For your own safety, turn switch off and remove plug from power source before
maintaining your microscope. If the power cord is worn, cut or damaged in any way, have
it replaced immediately to avoid shock or fire hazard.
1. Optical Maintenance
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 lint off lens surface using a camel hair brush.
You can also use an ear syringe or canned compressed air, sold by computer stores.
To clean eyepiece lenses, do not remove from eyepiece tube. Clean only the outer lens
surface. Breathe on lens to dampen surface, then wipe with lens paper 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 Windex can be used on a cotton swab or lens
tissue. To lean objective lenses, do not remove objectives from microscope. Clean front lens
element only, following same procedure.
2. Mechanical Maintenance
The only mechanical adjustment the microscope might require is the tension of the focusing
mechanism. This has been adjusted at the factory, but over time it may loosen and cause the
head of the microscope to slip downward on the focusing block.
The tension adjustment collar is located between arm and focus knob on left side of
microscope when the stage is facing towards you. With a jewelers type screwdriver, loosen
slotted set screw located on knurled surface of the tension adjustment collar. Turn collar
clockwise to tighten tension, counter-clockwise to loosen tension. After adjusting, tighten set-
screw to lock collar into place.
NOTE: It is recommended that you leave the tension as loose as possible for ease of focusing,
yet not so loose that it permits the head of the microscope to drift downward from its own
weight and cause the microscope to “drift” out of focus.
