Maintenance - National DC5-420TH Instructions For Use Manual

Eyepieces
WF5X
Field No.22
(Optional)
(No Reticle Holder)
Interpupillary
Distance
59~83
WF10X
Field No. 20
(Supplied)
Accepts Reticle
22.8mm O.D.
Interpupillary
Distance
54~78
WF15X
Field No. 13
(optional)
(No Reticle Holder)
Interpupillary
Distance
50.5~74.5
WF20X
Field No. 10
(optional)
(No Reticle Holder)
Interpupillary
Distance
52~76

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 components. Consult a microscope service technician when any repairs
not covered by instructions are needed.
B. Prior to cleaning any lens surface, brush dust or lint off lens surface using a camel hairbrush. You can also use an
ear syringe or canned compressed air, such as that sold by most computer stores.
C. To clean eyepiece lenses, do not remove from eyepiece tube. 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 Windex can be used on a
cotton swab or lens tissue. Follow the same procedure to clean objective lens covers.
MICROSCOPE MAGNIFICATION CHART
Zoom Standard Objective
Objective 1X
Position (Supplied)
Working Distance
79mm
Maximum Specimen
Height 93mm
Total
Magnification
1X 5X
2X 10X
3X 15X
4x 20X
1X 10X
2X 20X
3X 30X
4x 40X
1X 15X
2X 30X
3X 45X
4x 60X
1X 20X
2X 40X
3X 60X
4x 80X
Auxiliary Objective
0.75X
(Optional)
Working Distance
90mm
Maximum Specimen
Height 66mm
Field Total
Magnification
Size
22mm 3.75X 29.3mm
11mm 7.5X 14.6mm
7.3mm 11.25X
5.5mm 15X
20mm 7.5X 26.7mm
10mm 15X 13.3mm
6.7mm 22.5X
5mm 30X
13mm 11.25X 17.3mm
6.5mm 22.5X
4.3mm 33.75X
3.25mm 45X
10mm 15X 13.3mm
5mm 30X
3.3mm 45X
2.5mm 60X
6
Auxiliary Objective
1.5X
(Optional)
Working Distance
34mm
Maximum Specimen
Height 120mm
Field Total Field
Magnification
Size Size
7.5X 14.7mm
15X 7.3mm
9.8mm 22.5X 4.9mm
7.3mm 30X 3.7mm
15X 13.3mm
30X 6.7mm
8.9mm 45X 4.4mm
6.7mm 60X 3.3mm
22.5X 8.7mm
8.7mm 45X 4.3mm
5.8mm 67.5X 2.9mm
4.3mm 90X 2.2mm
30X 6.7mm
6.7mm 60X 3.3mm
4.4mm 90X 2.2mm
3.3mm 120X 1.7mm