Omax M828D5 User manual

User Manual
Kohler Illumination
Binocular Compound
Microscope
Model M828D5
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Table of Contents
i. Caution……..……………………………………………………………1
ii. Care and Maintenance……….………………………………….….…2
1. Component Illustration………………………….…………………..…3
2. Installation.……………………………………………………………...4
3. Operation……………………….………………………….…………....6
4. Specifications…………………….……………..……………………....8
5. Troubleshooting Guide….................................................................9

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i. Caution
1. Find the “UP” sign and place the Styrofoam container on your table or bench so
that the arrow is pointing upward. Open the shipping carton carefully to prevent
any accessory items (i.e. objectives or eyepieces) from dropping and being
damaged.
2. Do not discard the molded Styrofoam container. The container should be retained
should the microscope ever requires reshipment.
3. Keep the instrument out of direct sunlight, high temperature or humidity, and dusty
environments. Ensure that the microscope is located on a smooth, level and firm
surface.
4. If any specimen solutions or other liquids splash onto the stage, objective or any
other component, disconnect the power cord immediately and wipe up the spillage.
Otherwise, the instrument may be damaged.
5. Important: the lamp, lamp housing and adjacent parts will become very hot. Do
not touch these parts until they have completely cooled. Never attempt to handle a
hot halogen bulb.
6. All electrical connectors (power cord) should be inserted into an electrical surge
suppressor to prevent damage due to voltage fluctuations.
7. For safety when replacing the halogen lamp or fuse, be sure the main switch is off,
unplug the power cord, and only replace the halogen bulb after the bulb and the
lamp house has completely cooled.
8. Confirm that the input voltage indicated on your microscope corresponds to your
line voltage. The use of a different input voltage other than that as indicated will
cause severe damage to the microscope.

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ii. Care and Maintenance
1. Do not attempt to disassemble any component including eyepieces, objectives or
focusing assembly.
2. Keep the instrument clean; remove dirt and debris regularly. Accumulated dirt on
metal surfaces should be cleaned with a damp cloth. More persistent dirt should be
removed using a mild soap solution. Do not use organic solvents for cleansing.
3. The outer surface of the optics should be inspected and cleaned periodically using
an air stream from an air bulb. If dirt remains on the optical surface, use a soft cloth
or cotton swab dampened with a lens cleaning solution (available at camera
stores). All optical lenses should be swabbed using a circular motion. A small
amount of absorbent cotton wound on the end of a tapered stick makes a useful
tool for cleaning recessed optical surfaces. Avoid using an excessive amount of
solvents as this may cause problems with optical coatings or cemented optics or
the flowing solvent may pick up grease making cleaning more difficult. Oil
immersion objectives should be cleaned immediately after use by removing the oil
with lens tissue or a clean, soft cloth.
4. Store the instrument in a cool, dry environment. Cover the microscope with the
dust cover when not in use.

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1Components Illustration
1 Eyepiece 9 Microscope Base 17 Intensity Dial
2 Diopter Ring 10 Viewing Head 18 Power Switch
3 Eyepiece Tube 11 Head Thumb Screw 19 Iris Diaphragm Lever
4 Nosepiece 12 Microscope Body 20 Condenser focus Knob
5 Objective 13 Focus Tension Ring 21 Focus Stop Lever
6 Slide Holder 14 Coarse Focus Knob 22 Abbe Condenser
7 Mechanical Stage 15 Fine Focus Knob 23 Centering Screw
8 Kohler Illuminator 16 Stage Translational Knobs 24 Field Diaphragm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
21 24
22
23
19

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2Installation
2.1 Installation of the binocular viewing head
1) Loosen the thumb screw (11) on the top of the body (12) and
remove the plastic cover on the top.
2) Remove the cap on the circular dovetail of the binocular viewing
head (10)
3) Insert the dovetail into the socket on the top of body (12);
ensure that it is completely seated into the socket; tighten the thumb screw (11).
Caution: Do not release the head from your hand grip until you are sure the head is
installed securely.
2.2 Installation of the eyepieces
1) Remove the protective caps from the eyepiece tubes (3).
2) Insert the eyepieces (1) into the eyepiece tubes (3).
2.3 Installation of the objectives
1) Adjust the coarse focus knob (14) until the mechanical stage (7) is at its lowest
position.
2) Install the 4x objective into the nosepiece (4). Then in a clock-wise direction, rotate
the nosepiece and install each succeeding higher magnification objective.
Note: Inspect the objectives frequently for dirt or oil; clean if necessary. Use the 10x
objective to initially focus the image of your specimen. When changing the objective
magnification, rotate the objective nosepiece until you hear a “click” sound. This
ensures the objective is centered in the optical light path.
2.4 Installation of the filter
1) Swing out the filter holder under the condenser (21).
2) Put the filter onto the holder, swing the holder back in.
2.5 Installing (or changing) the halogen bulb
1) Turn the power off and disconnect the power cord.
2) Allow some time to cool down the lamp.
3) Turn over the microscope on its side; find the bulb compartment at the bottom.
4) Open the cover of the bulb compartment by loosening the thumb screw. Take out
the dead bulb and insert the new bulb. Be sure the pins on the bulb
are completely inserted into the lamp socket. You may also loosen
the two screws on the cover to adjust the position of the bulb to get
centered and even brightness. Screw the cover on.
Caution: Before you turn over the microscope, be sure to take the
eyepieces off and be certain that the head is securely locked by the
thumb screw.
2.6 Replacing the fuse
1) Turn off the power and disconnect the power cord.
2) Turn over the microscope on its side; find the fuse holder at the bottom of the base.
3) Turn the fuse holder counter-clockwise to take it out, replace the fuse, and then turn

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it on clockwise.
Caution: Before you turn over the microscope, be sure to take the eyepieces off and be
certain that the head is securely locked by the thumb screw.
2.7 Installing the mirror (optional, your model may not have one)
1) Unplug the power cord.
2) Thread off the field diaphragm on the base.
3) Thread the black disc onto the base and then insert the mirror
into the hole at the center of the black disc. You may try to get
reflected ambient light on either side of the mirror with different
angles for best result.
Note: The mirror is only used when there is a power outage or you are in the field and
no power available.

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65
3Operation
3.1 Adjusting illumination
1) Connect the power cord and turn on the main switch (18).
2) Turn the variable intensity dial (17) to increase or decrease the brightness.
3.2 Placing specimen
1) Place the slide on the mechanical stage (7).
2) Use the slide holder (6) to gently secure the slide.
3) Turn the X and Y translational knobs (16) to position the specimen for viewing.
Caution: Be sure not to allow an objective to touch a specimen slide when changing
objectives.
3.3 Adjusting interpupillary distance
While observing with both eyes, hold the left and right eyepiece tubes (3) then slide
the tubes in and out. The interpupillary distance is correct when the left and right
fields of view converge completely into one
image.
3.4 Adjusting eyepiece diopter
1) Rotate the 10x objective into position.
2) Rotate the diopter ring (2) on the right eyepiece
tube (3) until its numerical value is the same as
your interpupillary distance, for example, 65 in
the right figure.
3) Close your left eye and bring the specimen into
focus following the focusing procedures in 3.5.
4) Close your right eye and bring the same
specimen into clear sharp focus by adjusting the
diopter ring (2) on left eyepiece tube (3) only. Do
not use focus knobs at this step.
5) Since both sides are adjustable, you may also do
the above in the opposite way, in other words, left
eye first and right eye second.
3.5 Focusing
1) With the 10x objective in position, raise the mechanical stage (7) using the coarse
focus knob (14) until the specimen is close to the objective
2) Turn the coarse focus knob (14) until the specimen is in focus.
3) Use the fine focus knob (15) to obtain a sharp image.
4) You may now switch to another magnification objective.
Tips: To prevent your specimen slide from making contact with an objective, raise the
stage to its highest position without contacting the 100x objective, then tighten the
focus stop lever.
3.6 Adjusting condenser

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1) Turn the condenser focus knob (20) to raise or lower the condenser (22).
2) Raise the condenser (22) when using high power objectives and lower it when using
low power objectives.
Note:
The centering of the condenser and the light axes of the objective are factory
adjusted. Do not attempt re-adjustment.
The highest position of the condenser has been factory adjusted. Do not attempt
re-adjustment.
3.7 Adjusting Kohler illumination
1) Connect the power cord and turn on the main switch.
2) Have the specimen in focus.
3) Close the field diaphragm (24) so that the edges of the field diaphragm show in the
field of view.
4) Turn the condenser focus knob (20) to make the image of field diaphragm edges
clear
5) Adjust the centering screws (23) to make the image of field diaphragm edges in the
view center.
6) Open the field diaphragm (24) so that its edges are just out of the view field.
7) Adjust the aperture iris diaphragm lever (19) to get proper contrast of the specimen.
8) Adjust the intensity dial (17) to get proper light intensity.
3.8 Adjusting focus tension
The tension has been pre-set at the factory. If the mechanical stage drops by itself,
rotate the tension adjustment collar (13) located inside the focus knob (14) on the
power switch side until the tension is in maintained.

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4Specifications
General
Model M828D5
Total Magnification 40X, 64X, 100X, 160X, 200X, 320X, 400X, 640X, 1000X, 1600X
Viewing Head Binocular, inclined 45º, swiveling 360º
Interpupillary Distance Sliding adjustment, 55mm ~ 75mm
Diopter Adjustment On both eyepiece tubes
Eyepieces 1 pair of WF10X
1 pair of P16X
Nosepiece Revolving, quintuple
Objectives Plan objectives 4X, 10X, 20X, 40X(spring), 100X(spring, oil)
Condenser Abbe, NA=1.25, w/ iris diaphragm and filter holder
Rack and pinion adjustment
Focus Mechanism Coaxial coarse and fine focusing knobs on both sides w/ focus
stop
Stage Double layer mechanical stage
Dimension: 140mmx140mm (5-1/2” x 5-1/2”)
Movement range: 75mm X 50mm (3” x 2”)
Illumination Transmitted Kohler illumination system, adjustable center of field
diaphragm
Light bulb: 6V/20W, Halogen, Variable intensity
Power Supply AC 100V ~ 240V, 50/60HZ (US and Canada plug)
Dimension 28cm x 19cm x 40 cm (11” x 7-1/2” x 15-3/4”)
Net weight 5.34kg (11lb 12oz)
Package weight 6.6 kg
Magnifications
Eyepiece 10X 16X 10X 16X 10X 16X 10X 16X 10X 16X
Objective 4X 10X 20X 40X 100
Magnification 40X 64X 100X 160X 200X 320X 400X 640X 1000X 1600X