Omax M828D5 User Manual

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User Manual

Kohler Illumination

Binocular Compound

Microscope

Model M828D5

MicroscopeNet.com

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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.

Store the instrument in a cool, dry environment. Cover the microscope with the

dust cover when not in use.

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1 Components Illustration

21 24

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

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2 Installation

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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3 Operation

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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4 Specifications

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

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5 Troubleshooting Guide

OPTICAL PROBLEMS

Problem Cause Solution

Darkness at the periphery or uneven brightness in the field of view

Dirt or dust on the view

Poor image quality

Revolving nosepiece not in click stop position

The light source of the bulb is not at the center

Dirt or dust on the lens eyepiece, condenser, objective, collector lens or specimen

Dirt or dust on the specimen Clean the specimen No slide cover attached to the

slide

Slide cover is too thick or thin

Slide may be upside down

Immersion oil is on a dry objective (especially the 40x)

Revolve the nosepiece to click-stop position by swinging the objective correctly into the optical path

Adjust the position of the bulb

Clean the lens with a camera cleaning kit

Attach a 0.17mm slide cover

Use a slide cover of the appropriate thickness (0.17mm)

Turn slide over so the cover-glass faces up

Check the objectives, clean if necessary

No immersion oil used with 100x objective

Air bubbles in immersion oil Remove bubbles Condenser aperture is closed or

open too much Condenser is positioned too low Position the condenser upward

ELECTRICAL PROBLEMS

Problem Cause Solution

Lamp does not light when switched on

Kohler illumination system not set properly

No electrical power

Lamp bulb burnt out Replace bulb Fuse blown out Replace fuse

Use immersion oil

Open or close properly

Set up the Kohler illumination system according 3.4 on page 8.

Check power outlet Check power cord connection

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IMAGE PROBLEMS

Problem Cause Solution

Specimen rises from stage

Image moves while focusing

Image tinged yellow

Image is too bright Lamp intensity is too high

Insufficient brightness

surface Revolving nosepiece is not in

the click-stop position Blue filter not used Use daylight blue filter

Lamp intensity is too low

Aperture diaphragm closed too far

Condenser position too low Position the condenser upward

MECHANICAL PROBLEMS

Secure the specimen in the slide holder

Revolve the nosepiece to the click-stop position

Adjust the light intensity by rotating the intensity control dial

Open to the proper setting

Problem Cause Solution

Image will not focus with high power objectives

High power objective contacts slide when changed from low power objective

Slippage of focus when using the coarse focusing knob. Fine focus is ineffective

Slide upside down

Cover glass is too thick Use a 0.17mm cover glass

Slide upside down

Cover glass is too thick Use a 0.17mm cover glass Diopter adjustment is not set

properly Tension adjustment is set too

low Tension adjustment is set too

high

Turn the slide over so the cover glass faces up

Readjust the diopter settings

Increase the tension on the focusing knobs

Loosen the tension on the focusing knobs

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