Unitron Versamet 4 User Manual

Versamet 4

INVERTED

METALLURGICAL

MICROSCOPE

MANUAL

73 Mall Drive, Commack, NY 11725 • 631-543-2000 (P) • 631-589-6975 (F)

www.unitronusa.com • [e-mail]

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

CONTENTS

SAFETY NOTES ................................................................................................................... 3

CARE AND MAINTENANCE ................................................................................................ 3

INTRODUCTION .................................................................................................................. 4

UNPACKING AND COMPONENTS ..................................................................................... 4

COMPONENT DIAGRAMS ............................................................................................... 5-6

ASSEMBLY DIAGRAM ......................................................................................................... 7

DETAILED ASSEMBLY ................................................................................................... 8-11

OPERATION

ILLUMINATION ................................ ........................................................................................ 12

SELECTING THE LIGHT PATH ............................................................................................... 13

FOCUSING .............................................................................................................................. 13

FOCUSING TENSION ............................................................................................................. 14

INTERPUPILLARY DISTANCE ................................................................................................ 14

EYEGUARDS ........................................................................................................................... 14

FIELD DIAPHRAGM ................................................................................................................. 15

APERTURE DIAPHRAGM ....................................................................................................... 15

BRIGHTFIELD/DARKFIELD .................................................................................................... 16

POLARIZER ............................................................................................................................. 16

MOUNTING A MICROSCOPY CAMERA (OPTIONAL) ........................................................... 17

DIC COMPONENTS (OPTIONAL) ...................................................................................... 17-18

REPLACING THE LAMP .......................................................................................................... 18

TROUBLESHOOTING ................................................................................................... 19-20

MAINTENANCE ................................ ................................ .................................................. 21

SERVICE ............................................................................................................................ 21

WARRANTY ....................................................................................................................... 21

UNITRON

73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com 2

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

SAFETY NOTES

1. Open the shipping carton carefully to prevent any accessory, i.e. objectives or eyepieces, from dropping
and being damaged.

2. Do not discard the molded shipping carton; the container should be retained should the microscope ever
require reshipment.

3. Keep the instrument out of direct sunlight, high temperature or humidity, and dusty environments. Ensure
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. All electrical connectors (power cord) should be inserted into an electrical surge suppressor to prevent
damage due to voltage fluctuations.

6. LAMP REPLACEMENT -- CAUTION: the glass housing of the lamp may be extremely hot.

DO NOT attempt to change the lamp before it is completely cooled or without wearing
adequate skin protection.

7. FUSE REPLACEMENT -- For safety when replacing the fuse (ONLY replace with the same

size, type and rating of original fuse), be sure the main switch is in the off position, disconnect

8. Confirm that the input voltage indicated on your microscope corresponds to your line voltage. The use of a
different input voltage other than indicated will cause severe damage to the microscope.

the power cord from outlet, and replace the fuse. Reconnect the power cord and turn unit on.

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 such as cotton swabs or
Q-tips, 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.

5. UNITRON® microscopes are precision instruments which require periodic preventative maintenance to
maintain proper performance and to compensate for normal wear. An annual schedule of preventative
maintenance by qualified personnel is highly recommended. Your authorized UNITRON® distributor can
arrange for this service.

UNITRON

73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com 3

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

INTRODUCTION

Congratulations on the purchase of your new UNITRON® microscope. UNITRON® microscopes are
engineered and manufactured to the highest quality standards. Your microscope will last a lifetime if used
and maintained properly. UNITRON® microscopes are carefully assembled, inspected and tested by our
staff of trained technicians in our New York facility. Careful quality control procedures ensure each
microscope is of the highest quality prior to shipment.

UNPACKING AND COMPONENTS

Your microscope arrived packed in a molded shipping carton. Do not discard the carton: the carton
should be retained for reshipment of your microscope if needed. Avoid placing the microscope in dusty
surroundings or in high temperature or humid areas as mold and mildew will form. Carefully remove the
microscope from the EPE foam container by its arm and base and place the microscope on a flat,
vibration-free surface. Check the components against the following standard configuration list:

 Stand, which includes the

supporting arm, trinocular
viewing head, and
focusing mechanism

 Eyepieces as ordered
 Roll-down eyeguards
 Nosepiece
 Nosepiece lock screw
 Objectives as ordered
 Mechanical stage
 Stage plate inserts
 Stage clips (pair)
 Illuminator
 Color Filter slider
 Green, yellow and clear daylight blue
 Polarizer slider
 Analyzer slider
 360° rotatable analyzer slider
 DIC slider (optional)
 3-prong electric power cord
 Hex screwdriver
 Hex screwdriver magnetic mount
 Dust cover
 Instruction manual

Optional accessories such as optional objectives and/or eyepieces, slides sets, etc., are not shipped as
part of the standard equipment. These items, if ordered, are shipped separately.

UNITRON

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Trinocular

Viewing Head

Light Path

Selection Slider

Coarse/Fine Focus

Adjustment Knobs

Eyepieces

Metal Stage

Insert Plate

Camera/Photo

Port

Mechanical

Stage

Color Filter

Slider

Tension

Adjustment Collar

Hex

Screwdriver

Lock

Screw

X/Y Axis

Stage Control

Knobs

Illuminator

On/Off

Power Switch

Aperture

Diaphragm

Lever

Field

Diaphragm

Lever

Polarizer

Slot

Light Intensity

Control Knob

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

COMPONENTS DIAGRAM

UNITRON

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Objective

Nosepiece

Nosepiece

Ring

Brightfield & Darkfield

Lever

Eco Button

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

COMPONENTS DIAGRAM

UNITRON

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① Illuminator
② Nosepiece
③ Objectives

④ Metal Stage Insert Plate
⑤ Stage Clips
⑥ Eyepieces

⑦ Filter Slider
⑧ Power Cord
⑨ Hex Screwdriver

④

①

②

③

⑤

⑥

⑦

⑧

⑨

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

ASSEMBLY DIAGRAM

The diagram below shows how to assemble the various components. The numbers indicate the order of
assembly. Use the 1.5mm and 2mm hex wrenches that are supplied with your microscope when
required. Be sure to keep these wrenches for changing out components or making adjustments.

When assembling the microscope, make sure that all parts are free of dust and dirt, and avoid scratching
any parts or touching glass surfaces.

UNITRON

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Installing the Illuminator (Fig. 1)

Using the included hex screwdriver, loosen the lock
screws ① on the illuminator port ② on the back of
the microscope.

Align the illuminator ③ with the illuminator port ②
and gently slide the illuminator into the port.

Tighten the lock screws ①.

Installing the Objectives (Fig. 2, 3 & 4)

Turn the coarse adjustment knob ① (Fig. 2) until the
nosepiece is at its lowest position.

Through the opening in the top of the stage
(Fig. 4), remove the dust cap ② and thread the
lowest magnification objective onto the nosepiece
opening, then rotate the nosepiece clockwise and
thread the other objectives from low to high
magnification.

NOTE: Always rotate the nosepiece by using the
knurled nosepiece ring ⑤ (Fig 3).

Keep the dust cap on any unused nosepiece
openings to prevent dust and dirt from getting inside.

NOTE: Clean the objectives periodically.
When viewing a sample, focus the sample using the

lowest magnification objective (5x or 10x). Then
change to the higher magnification as desired.

When changing objectives, rotate the nosepiece until
it clicks so ensure the objective is in the center of the
light path.

Be sure to note the working distance of the objectives
to avoid touching the specimen or stage which can
cause damage to the objective lens.

①

②

③

Fig. 1

Fig. 2

Fig. 3

Fig. 4

① ② ③ ④ ⑤

②

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

ASSEMBLY

UNITRON

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Installing the Metal Insert Stage Plate

(Fig. 5)

Place the metal insert stage plate ① with the V
groove ② facing the user to make it easier to check
the objective.

Installing the Stage Clips (Fig. 6)

Remove the clip ① from the column ② and screw
the column into one of the holes ③ on the stage.

Secure the column to the stage with the screw.
Then slide the clip onto the column facing toward the

user.
Repeat for the other stage clip.

Installing the Eyepieces (Fig. 7)

Remove the eyetube caps ① and insert the
eyepieces ② into the eyepiece tubes ③.

Lock in the eyepieces using the supplied 1.5mm hex
wrench to tighten the lock screw on each eyepiece
tube.

①

②

Fig. 5

Fig. 6

② ② ③

①

Fig. 7

②

③

①

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

ASSEMBLY (continued)

UNITRON

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Installing the Color Filter Slider (Fig. 8)

The Versamet 4 is equipped with three filters (green,
yellow and clear daylight blue), and a three position
filter slider ① that is inserted into the filter slot ②.

The middle position on the filter slider is empty for
brightfield observation, (or simply remove the filter
slider). The other two positions are empty so that you
may insert the any of the other filters into these
positions.

To insert a filter into the filter slider, position the
rounded side down and simply slide the filter into
place.

NOTE: be sure to keep the filter slider in an upright

position as the filters when inserted do not click into
place and can slide out if the slider is turned sideways
or upside down.

To insert the filter slider into the filter slot, you must
remove one of the end screws ③ by turning it
counterclockwise. You may then insert the filter slider
into the filter slot from either side of the microscope.
Once inserted, replace the end screw by turning it
clockwise.

To move a filter into the light path, slide the filter
slider until the desired filter is in the light path.

NOTE: the filters have a “Ʌ” groove on the bottom

and you will hear/feel each “click” into place.

Fig. 8

② ③ ①

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

ASSEMBLY (continued)

UNITRON

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Connecting the Illuminator
& Power Cords (Fig. 9)

Make sure the power switch ① is set to “OFF”.
Insert the plug ② of the illuminator into the “Output”

socket ③ on the back of the microscope by aligning
the notches on the plug with the two pegs on either
side of the socket and then slide it on until it clicks
into place.

Insert the plug ④ of the external power supply ⑤
into the “Input” socket on the back of the microscope
with the flat side of the plug facing down.

Insert the female end ⑦ of the power cord into the
three pronged socket on the external power supply.

Plug the other end ⑧ into a grounded (3-prong)
outlet.

NOTE: Always use the power cord that is provided

with your microscope; using a different power cord
may damage your microscope. Should you need a
replacement, contact your authorized UNITRON
dealer or call UNITRON at 1-631-543-2000 for a
dealer nearest you.

Storing the Hex Screwdriver (Fig. 10)

For convenience, you can store the hex screwdriver
① for your microscope in the magnetic “L” mount ②
provided.

The mount can be attached to the magnet ③ on the
back of the microscope with the hole positioned as
shown.

The hex screwdriver can then be inserted into the
mount’s hole as shown for storage.

Fig. 9

Fig. 10

② ③ ①

④

⑤

⑦

⑧

⑥ ② ③

①

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

ASSEMBLY (continued)

UNITRON

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Adjusting the Illumination (Fig. 11)

Turn on “―” the power switch ①.

NOTE: For longer lamp life always turn the light

intensity control knob ② to the lowest illumination
intensity setting possible before turning the power on
or off.

The light level may need adjustment depending upon
the specimen density and objective magnification.
Adjust the light intensity for comfortable viewing by
turning the light intensity control knob clockwise to
increase brightness. Turn counterclockwise to
decrease brightness.

“ECO” (Economy) Setting

The Versamet 4 is equipped with an auto shut-off

feature, or “ECO” mode, to preserve the life of the

bulb. ECO mode activates when the microscope is
unattended for thirty (30) minutes and turns the
illuminator off. It will reactivate and turn the illuminator
back on when the user returns and is in front of the
microscope.

To reactivate the illumination, press the ECO button
④ once (it will stay indented).

To DISABLE the ECO feature, PRESS the ECO
button once (it will be flush with the outer ring).

To REACTIVATE the ECO feature, PRESS the ECO
button once (it will stay indented).

Fig. 11

②

③

①

④

OPERATION

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

UNITRON

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Selecting the Light Path (Fig. 12)

The Versamet 4 is outfitted with a binocular viewing
head with one photo port for HDMI/digital imaging.
You must select the appropriate light path for
observing specimens.

The light path is set to 100% to the binocular
eyepieces as the default setting at our facilities where
the light path selection slider ① is set to the “OUT”
position (pushed all the way to the right).

Slide the light path selection slider to the left to the
“IN” position. This will send 0% of the light to the
binocular viewing head and 100% to the top photo
port for HDMI/digital imaging and documentation.

Adjusting the Focus (Fig. 13-14)

To ensure that you obtain sharp images with both
eyes, (since eyes vary, especially for those wearing
glasses) any eyesight variation can be corrected in
the following manner.

Set both diopter collars ① to “0” by aligning the line
on the eyepiece ② with the line on the diopter collar.

Using your left eye only and the lowest magnification
objective (5x or 10X), focus your specimen by
adjusting the coarse adjustment knob ③.

When the image is in view, refine the image to its
sharpest focus by turning the fine adjustment knob ④.

Rotate the diopter collar to obtain the sharpest focus.
To obtain the same sharp image using your right eye,
do not touch the coarse or fine adjustments. Instead,
rotate the right diopter collar until the sharpest image
appears. Repeat several times to check.

IMPORTANT: DO NOT counter rotate the focusing
knobs as this will cause severe problems and
damage to the focusing system.

① ② ①

Fig. 12

Fig 13

Fig 14

③

④

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

OPERATION (continued)

UNITRON

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Adjusting the Focusing Tension (Fig. 15)

If the feel is very heavy when focusing with the focusing

knobs (Fig. 14, ③ & ④, or the specimen leaves the
focus plane after focusing, adjust the tension with the
tension adjustment ring ① (Fig. 15).

Turn the tension adjustment ring clockwise to loosen or
counterclockwise to tighten according to user
preference.

IMPORTANT: DO NOT counter rotate the focusing
knobs as this will cause severe problems and damage to
the focusing system.

Adjusting Interpupillary Distance (Fig. 16)

To adjust the interpupillary distance, hold the left and
right eyetubes while observing a specimen. Rotate the
eyetubes around the central axis until the fields of view
of both eyetubes coincide completely. A complete circle
should be seen in the viewing field when viewing the
specimen slide. An improper adjustment will cause
operator fatigue and will disrupt the objective parfocality.

Where the “●” ① on the eyepiece tube lines up with the
interpupillary distance scale ②, that is the number for
your interpupillary distance.

The range is 50-75mm. Be sure to write down you
interpupillary number for future operation.

Adjusting the Eyepiece Eyeguards

(Fig. 17)

The Versamet 4 eyepieces come standard with roll­down eyeguards.

The eyeguards should be rolled down ① for users
wearing eyeglasses to prevent them from being too far
from observing through the eyepieces. Or, not rolled
down ② for those who don’t wear glasses to prevent
extraneous light from entering the eyepiece which may
interfere with specimen observation.

①

Fig. 15

Fig 16

Fig 17

① ② ①

②

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

OPERATION (continued)

UNITRON

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Adjusting the Field Diaphragm

(Fig. 18-19)

By limiting the diameter of the light entering the
condenser, the field diaphragm can prevent stray light
and improve the image contrast. When the image is just
on the edge of the field of view, the objective can show
the best performance and obtain the clearest image.

Move the field diaphragm lever (FS) ① in or out to
adjust the field diaphragm.

The image of the field diaphragm can be seen when
observing through the eyepiece.

The field diaphragm was pre-centered prior to shipment.
If the field diaphragm needs to be adjusted, adjust the
right and left centering
screws ② using the hex screwdriver until the field
diaphragm is centered in the field of view.

Using the Aperture Diaphragm

(Fig. 20-21)

The iris diaphragm determines the numerical aperture
(N.A.) of the illumination system in bright field
observation. When the N.A. of the objective and the
illumination system match, you can obtain higher image
resolution and contrast, as well as an increased depth of
focus.

Move the aperture diaphragm lever (AS) ① in or out to
adjust the aperture diaphragm so that the aperture
diaphragm image covers 70% to 80% of the pupil of the
objective.

To properly adjust the aperture diaphragm adjust the
right and left centering screws ② using the hex
screwdriver until the aperture diaphragm is centered in
the field of view.

①

Fig. 18

②

Fig. 19

Fig. 20

Fig. 21

①

②

70% - 80%

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

OPERATION (continued)

UNITRON

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Changing from Brightfield
To Darkfield Observation (Fig. 22)

The Versamet 4 allows users to easily change from
brightfield observation to darkfield observation by
sliding the brightfield (BF) & darkfield (DF) lever ①.

For brightfield observation, push the lever all the way
in (BF).

For darkfield observation, open both the aperture
diaphragm and field diaphragm levers to fully open,
and pull the brightfield & darkfield lever all the way
out (DF).

Using the Simple Polarizer (Fig. 23)

The simple polarizer includes the polarizer and
analyzer.

To use, remove the dust plug from the polarizer slot
①and insert the polarizer slider ②into the slot as
shown. The polarizer is moved into the light path
when you hear it the second click.

NOTE: when using the polarizer, remove the color

filter slider.
There are two analyzers: one fixed ③ and the other

360° rotatable analyzer ④.
To use one of the analyzers, remove the dust plug

from the analyzer slot ⑤ and insert an analyzer
slider into the slot as shown.

The polarizer and analyzer are orthogonal when the
360° rotating analyzer slider is zero adjusted or the
fixed analyzer slider is used.

With the 360° rotating analyzer slider, you can
change the orthogonal state of the polarized light by
turning the dial ⑥.

①

Fig. 22

①

Fig. 23

② ⑥ ③ ⑤ ④

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

OPERATION (continued)

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Mounting a Microscopy Camera (Optional)
(Fig. 24)

Installing Couplers

Loosen the lock screw ① and remove the dust cap ②
on the camera/photo port.

Loosen the lock screw ① until it is flush with the inside
of the photo port.

Remove the dust caps from both ends of the c-mount
③ and from your camera lens and attach the top
opening ④ on the c-mount to the threaded mount on
your camera.

Attach the bottom threaded mount of the c-mount (with
the mounted camera) onto the camera/photo port and
tighten the lock screw ①.

Selecting the Light Path for Observation
With a Camera

Refer to page 13.

Slide the light path selection slider ⑤ to the left to the

“IN” position. This will send 0% of the light to the

binocular viewing head and 100% to the top photo port
for HDMI/digital imaging and documentation.

Using the DIC Components (Fig. 25)

While in brightfield observation, focus a specimen with
the 10x or 20x objective.

Push the polarizer and the analyzer into the light path and
ensure they are both orthogonal (the field of view is the
darkest).

Loosen the lock screw ① on the nosepiece, remove the
dust plug from the DIC slot and insert the DIC slider ②
until it stops. Tighten the lock screw.

Rotate the fine adjustment knob ③ on the DIC slider to
combine the interference colors in the field of view, then
choose the suitable background interference color to
attain the best effect of differential interference contrast
image (the embossed effect is the most obvious).

Fig. 24

① ② ④

Camera

③

⑤

Fig. 25

① ② ③

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

OPERATION (continued)

UNITRON

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LAMP REPLACEMENT -- CAUTION:
the glass housing of the lamp may be
extremely hot. DO NOT attempt to
change the lamp before it is completely
cooled or without wearing adequate skin
protection.

Replacement Lamp: Catalog # 150-30-100
(12volt 100 watt halogen)

Using the DIC Components (Fig. 25)

(continued)

The fine adjustment knob ③ can control the background
interference color change from gray to mauve.

NOTE: Adjusting the aperture diaphragm at the same

time will provide the best contrast.
Since the differential interference contrast is very

sensitive, there should not be any dirt or dust on the
surface of the sample.

Birefringent materials cannot reach the effect of
differential interference contrast in microscopical
examination.

Replacing the Lamp (Fig. 26-27)

The halogen lamp was installed by our factory technicians
prior to shipment. Should you need to change the lamp,
following the instructions below.

NOTE: When handling the halogen lamp, handle it

only using lint-free gloves, cloth or tissue. Touching
the lamp with your fingers or other type of material
can damage the bulb.

Turn the power switch to OFF and UNPLUG the
microscope power cord; allow the lamp to cool.

Using the hex screwdriver supplied with your
microscope, loosen the lock screw ① and remove the
black illuminator housing cover by sliding it upwards as
shown.

Using a lint-free glove, cloth or tissue, gently grasp the
lamp ② and push the lamp release lever ③ back to
release the lamp; pull the lamp out.

Using a lint-free glove, cloth or tissue, gently grasp the
replacement lamp, push the lamp release lever back
and insert the lamp pins ④ into the jack ⑤ closest to
the hinge of the lamp release lever, then release the
lever; the lamp should be horizontal after installation.

Replace the illuminator housing cover and tighten the
lock screw.

Fig. 26

①

② ⑤ ④

Fig. 27

③

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

OPERATION (continued)

UNITRON

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PROBLEM

CAUSE

SOLUTION

The illumination is on, but the
field of view is dark.

The bulb is burnt out.

Replace it with a new one

The brightness is set too low

Set it to the appropriate position

The field diaphragm is not open enough or
closed

Open the field diaphragm

Too many filters are in the optical path

Reduce them to the minimum required
number

The edge of the field of view is
obscured or not evenly
illuminated.

The nosepiece is not in the located position

Turn the nosepiece into the position where
you can hear it engaged

Dirt or dust has accumulated on the lens
(objective or eyepieces)

Clean the lens

Light path selection slider is not in the right
position

Pull it into the right position

The color filter, polarizer or analyzer is not
inserted fully

Push it in all the way

Dirt or dust is visible in the field
of view

Dirt/dust on the specimen

Replace with a clean specimen

Dirt/dust on the eyepiece

Clean the eyepieces

The image is not clear

Cover glass on the specimen slide

Clean the specimen

The specimen is not vertical to the objective

Adjust it

The nosepiece is not in the correct position

Turn the nosepiece into the correct position

The aperture diaphragm is not open correctly

Adjust it

The light path selection slider is not in the
correct position

Push it into the correct position

Visibility is poor

 Image is not sharp
 Contrast is poor
 Details are indistinct

The objective is not correctly engaged in the
light path

Turn the nosepiece into the engaged position

the aperture diaphragm is opened or stopped
down too far in brightfield observation

adjust the aperture diaphragm properly

The lens (condenser, objective, eyepieces)
are dirty

Clean it thoroughly

One side of the image is dark,
blurred or it moves while
focusing

The objective is not in the center of the light
path

Insure the nosepiece is in the “clicked”

position

The specimen is not correctly positioned on
the stage

Reposition the specimen on the stage

The eyes tire easily; the right

field of view doesn’t

superimpose with the left
Interpupillary distance is incorrect

Adjust the interpupillary distance

Diopter adjustment is incorrect

Adjust the diopter

The eyepiece for the right eye is different from
the left one

Use the same eyepieces

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

TROUBLESHOOTING

Under certain conditions, performance of this unit may be adversely affected by factors other than defects. If a
problem occurs, please review the following list and take remedial action as needed. If you cannot solve the
problem after checking the entire list, please contact your local dealer for assistance.

OPTICAL

UNITRON

73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com 19

PROBLEM

CAUSE

SOLUTION

The coarse adjustment knob is
too difficult to rotate

The tension adjustment ring is tightened too
much

Loosen it

The image goes out of focus
during observation or the stage
drops by itself

The tension adjustment collar is too loose

Tighten it

PROBLEM

CAUSE

SOLUTION

The lamp doesn’t light
No power to the lamp

Check the power cord is connected correctly

The lamp is not installed correctly

Install it correctly

The lamp burns out

Replace the lamp

The light intensity is not
enough

The light intensity control knob is not set
properly

Adjust the light intensity control knob

The wrong lamp is used

Replace the lamp with the correct one

The lamp keeps burning out

The wrong lamp is used

Replace the lamp with the correct one

The lamp flickers or the
brightness is not stable

The lamp will burn out soon

Replace the lamp

The power supply doesn’t connect well

Connect the power supply correctly

When using a camera and
viewing on a monitor, a
reflection from a window or
indoor lighting is seen in the
image

The stray light entered through the eyepieces
or viewfinder is reflected

Cover both eyepieces to prevent stray light
from entering

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

TROUBLESHOOTING (continued)

MECHANICAL PART

ELECTRICAL SYSTEM

MISCELLANEOUS

UNITRON

73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com 20

VERSAMET 4 INVERTED METALLURGICAL MICROSCOPE

MAINTENANCE

Please remember to never leave the microscope with any of the objectives or eyepieces removed and
always protect the microscope with the dust cover when not in use.

SERVICE

UNITRON® microscopes are precision instruments which require periodic servicing to keep them
performing properly and to compensate for normal wear. A regular schedule of preventative maintenance
by qualified personnel is highly recommended. Your authorized UNITRON® distributor can arrange for
this service. Should unexpected problems be experienced with your instrument, proceed as follows:

1. Contact the UNITRON® distributor from whom you purchased the microscope. Some
problems can be resolved simply over the telephone.

2. If it is determined that the microscope should be returned to your UNITRON® distributor or to
UNITRON® for warranty repair, pack the instrument in its original Styrofoam shipping carton. If you no
longer have this carton, pack the microscope in a crush-resistant carton with a minimum of three inches
of a shock absorbing material surrounding it to prevent in-transit damage. The microscope should be
wrapped in a plastic bag to prevent Styrofoam dust from damaging the microscope. Always ship the
microscope in an upright position; NEVER SHIP A MICROSCOPE ON ITS SIDE. The microscope or
component should be shipped prepaid and insured.

LIMITED MICROSCOPE WARRANTY

This microscope is warranted to be free from defects in material and workmanship for a period of five (5) years for
mechanical and optical components and one (1) year for LED bulb and electrical components from the date of
invoice to the original (end user) purchaser. This warranty does not cover damage caused in-transit, misuse,
neglect, abuse or damage resulting from improper servicing or modification by other than UNITRON® approved
service personnel. This warranty does not cover any routine maintenance work or any other work, which is
reasonably expected to be performed by the purchaser. Normal wear is excluded from this warranty. No
responsibility is assumed for unsatisfactory operating performance due to environmental conditions such as
humidity, dust, corrosive chemicals, deposition of oil or other foreign matter, spillage or other conditions beyond the
control of Unitron Ltd. This warranty expressly excludes any liability by UNITRON Ltd. for consequential loss or
damage on any grounds, such as (but not limited to) the non-availability to the End User of the product(s) under
warranty or the need to repair work processes. Should any defect in material, workmanship or electronic
component occur under this warranty contact your UNITRON® distributor or UNITRON® at [phone]. This
warranty is limited to the continental United States of America. All items returned for warranty repair must be sent
freight prepaid and insured to Unitron Ltd., 73 Mall Drive, Commack, NY 11725 – USA. All warranty repairs will be
returned freight prepaid to any destination within the continental United States of America. For all foreign warranty
repairs, return freight charges are the responsibility of the individual/company who returned the merchandise for
repair.

UNITRON® is a registered trademark of UNITRON, Ltd., Commack, NY 11725

UNITRON

73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com 21