6
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
A.
Do not attempt to disassemble any lens component. Consult an expert technical service company
when repairs not covered by these instructions are required.
B.
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.
C. Cleaning eyepiece lenses.
Do not remove eyepiece from eyepiece tube. Clean only the outer surface. Breath on lens to dampen
surface, then wipe with lens paper. Do not wipe lens surface while dry as lenses are scratched very
easily. Wipe in a circular motion from center to outer edges.
D. Cleaning objective lenses.
Your microscope is supplied with a clear glass objective lens protector; do not remove this lens
protector from microscope. Clean glass element only. Using a cotton swab saturated with distilled
water, clean front surface. If specimen material of any kind is evident, use a cotton swab dipped in a
small amount of distilled water or Windex to clean all foreign material from glass surface.
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 the course of 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. 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 the set screw to lock collar in 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 microscope to drift downward from its own weight and cause the
microscope to “drift” out of focus.
3. ELECTRICAL MAINTENANCE
The extent of electrical maintenance, by other than a qualified technician, should be bulb or fuse
replacement. BE CERTAIN TO TURN SWITCHES OFF AND REMOVE PLUG FROM POWER SOURCE
OUTLET BEFORE CHANGING BULBS.
A. To replace top bulb... remove black top light housing by rotating in a counter-clockwise direction.
Remove lamp using a clean cloth by depressing and rotating lamp. Install new lamp using a clean cloth,
gently depress into socket and turn clockwise. Replace light housing.
