Unitron Z730 series User Manual

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Z730 STEREO MICROSCOPE

CONTENTS

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

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

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

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

COMPONENTS DIAGRAM .................................................................................................. 4

ASSEMBLY .......................................................................................................................... 5

DETAILED ASSEMBLY PROCEDURE ................................................................................ 6

ADJUSMENT AND OPERATION

ADJUSTING BINOCULAR VIEWING HEAD ................................................................... 8

FOCUS ADJUSTMENT ................................................................................................... 9

SPECIFICATIONS .............................................................................................................. 10

TROUBLESHOOTING ........................................................................................................ 11

MAINTENANCE.................................................................................................................. 12

SERVICE ............................................................................................................................ 12

WARRANTY ....................................................................................................................... 12

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Z730 STEREO MICROSCOPE

SAFETY NOTES

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

dropping and being damaged.

2. Keep the instrument out of direct sunlight, high temperature or humidity, and dusty environments.

3. 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.

4. LAMP REPLACEMENT -- CAUTION: the glass envelope 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.

5. All electrical connectors (power cord) should be inserted into an electrical surge protector to prevent

damage due to voltage fluctuations.

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

7. 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.
NOTE: Always plug the stereomicroscope power cord into a suitable grounded electrical outlet. A
grounded 3-wire cord is provided.

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, lint free 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 such as a Q-tip or cotton swab, 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.

4. Store the instrument in a cool, dry environment. Cover the microscope with the dust cover when not
in use.

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5. UNITRON

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

UNITRON

®

®

distributor

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Z730 STEREO 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

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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 shipping
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 can form. Carefully
remove the microscope from the shipping carton and place the microscope on a flat, vibration-free
surface.

COMPONENTS DIAGRAM

Binocular Head & Zoom Body

Eyepieces

Stand

Focusing Knob

Diopter Rings

Lock-screw

Stage Plate

Base

NOTE: Stand ordered may not be as pictured above.

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Power Cord

Brightness
Adjustment Knob

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Z730 STEREO MICROSCOPE

ASSEMBLY

The diagram below shows how to assemble the various modules. The numbers indicate the order of
assembly.

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

Binocular Head & Zoom Body

Eyepieces

Lock-screw

Power Cord

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Z730 STEREO MICROSCOPE

DETAILED ASSEMBLY PROCEDURE

Mounting the Binocular Head (Fig.1)

Loosen the clamping knob③ on the focus mount

④

and insert the binocular head and zoom body
assembly②into the bracket of the focus mount,
then tighten the lock screw ③.

Fig. 1

Fig. 2

Mounting the Eyepieces (Fig.1, Fig.2, Fig.3)

Remove the eyepiece dust caps
gently insert the two adjustable eyepieces
(Fig. 2) into the eyepiece sleeves until they stop,

as shown in Fig.3.

①

(Fig. 1)and

⑤

IMPORTANT

ENVIRONMENT REQUIREMENTS

1 Ambient temperature: 5°C to 40°C (41°F

to 104°F)

2 High temperature will result in moisture

and mildew and could damage instrument.

3 Avoid placing the instrument in a dusty

environment. When not in use, cover the
microscope with the dust cover.

Maximum R.H：85%

，

。

Fig. 3

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4 Keep the microscope on a flat and stable

surface.

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Fig. 4

Z730 STEREO MICROSCOPE

For Microscopes Purchased
With Illuminated Stands

VOLTAGE CHECK

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

Connecting the Power Cord (Fig.4)

Rotate the left and right brightness adjusting
switches

position) before connecting the power cord

①

clockwise until it stops (the off

②

.

Fig. 5

Insert the power plug ② into the power jack of
the microscope; make sure the connection is
snug.

Plug the power cord ② into the power supply
receptacle.

Adjustable illumination for both top and bottom.
Input Rating：100V～240V.

Optional trinocular head is available for camera
or imaging accessories.

Video/Photography Accessories Assembly

Thread the C-mount video adapter ④ onto the
camera ⑤ and insert into the trinocular port.
Secure with lock screw.

⑥

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Z730 STEREO MICROSCOPE

ADJUSTMENT
AND OPERATION

Adjusting Binocular Viewing Head

Fig. 6

Adjusting Interpupillary Distance (Fig.6)

Different users have different interpupillary
distances (this distance is between the centers
of pupils of each eye). When operators of the
microscope change, it will be necessary to
adjust interpupillary distance.

While looking through the eyepieces, hold the
left and right eyepiece tubes of the binocular
assembly①and adjust the eyepiece tubes by
opening or closing them until the left and right
fields of view coincide completely and you are
able to see a complete circle.

Adjusting Diopter Ring (Fig.7)

Set the diopter rings of both eyepieces to “0”
(zero) position. (Do this when users change,
because different users will have different
diopter settings.)

Fig. 7

Place an easy-to-observe specimen on the
stage plate, i.e., a coin.

Rotate the zoom knob③to the highest
magnification 3x, then turn the focusing knob

to focus the specimen.
Rotate the zoom knob③to the lowest

magnification 0.7x, looking only into the left
eyepiece, adjust the diopter ring on left eyepiece
to focus the specimen. Then repeat procedure
for the right eyepiece.

NOTE: The working distance of the microscope
is 97mm (the distance between the microscope
objective to the top of the specimen), the
binocular head bracket⑤can be mounted onto
higher or lower positions according to your
needs by removing the clamping bolt with the
Allen wrench provided.

④

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Focus Adjustment

Fig. 8

Z730 STEREO MICROSCOPE

Adjusting the Rotation Tension of the
Focus Adjustment Knob (Fig.8, Fig.9)

To adjust tension, hold both left and right focus
adjustment knobs①with both hands, hold the
left knob (to prevent it from turning), and rotate
the right knob clockwise to increase (tighten) or

counterclockwise to decrease (loosen) the focus
knob tension.

After tension adjustment has been completed,
always rotate both adjustment knobs in the
same direction.

Changing the Magnification

Fig. 9

The zooming knobs located on both sides of the
zooming body will change the magnification of
the specimen image.

Total Magnification = Magnification of zoom
body x magnification of eyepiece
(i.e., 0.7 x 10=7x)

NOTE:

If using the optional auxiliary 0.5x
objective, then the above magnification would be
multiplied by auxiliary objective magnification.
(i.e., auxiliary 0.5 x 7=3.5x)

FOR MICROSCOPES
PURCHASED WITH ILLUMINATION

Adjustable illumination for both LEDs (top and
bottom).

Brightness adjustment: the right brightness
adjustment knob③is used to adjust the bottom
illumination, and the left brightness adjustment
knob④is used to adjust the top illumination.
Each knob has its own on/off. Rotate

counterclockwise to increase the power and
brightness. Rotating clockwise would decrease
the brightness until the power is off.

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Z730 STEREO MICROSCOPE

SPECIFICATIONS

Zoom ratio: 4.3 to 1
Objective magnification: 0.7x～3.0x
Binocular viewing head: Inclined at 45 or 60 degrees depending on model purchased, interpupillary

distance range: 55～75mm
Working distance: 97mm
Illumination system: Adjustable illumination for both LEDs (top and bottom)

Eyepiece

Auxiliary
Objective

0.5X 180 3.5-15X 51.4-12 5.2-22.5X 40.0-9.4 7-30X 31.4-7.4

0.63X 140 4.4-18.9X 43.9-10.6 6.6-28.3X 31.7-7.4 8.8-37.8X 24.9-5.8
2X 30 14-60X 12.8-3 21-90X 10.0-2.3 28-120X 7.9-1.8

Working

Distance

(mm)

Magnification

97 7-30X 25.7-6 10.5-45X 20.0-4.7 14-60X 15.7-3.7

10X/20 15X/16 20X/12.5

Total

Visual Field

(mm)

Total

Magnification

Visual Field

(mm)

Total

Magnification

Visual Field

(mm)

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Z730 STEREO 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.

PROBLEM CAUSE SOLUTION PAGE

1．Incomplete binocular
vision.

2．Dirt is visible in field of

view

3．The visibility of the
image is poor.

4. Specimen image blurs
when zoom magnification
is changed.

5．Coarse focus
adjustment knobs rotate

with too much resistance.
6．Zoom microscope body
drops or specimen goes

out of focus during
observation.

Interpupillary distance
is not correctly
adjusted.
Diopter adjustment is
incomplete.
Dirt on specimen Clean specimen 3 – Care &

Dirt on eyepiece Clean eyepiece
Dust on objective front

lens.
Diopter ring is not

correctly adjusted.
Not in complete focus
on specimen.

Tension adjustment
ring is too tight.

Tension adjustment
ring is too loose.

Adjust it correctly 8 – Fig. 6

Complete diopter
adjustment

Maintenance

Clean lens surface 3 – Care &

Maintenance

Adjust it correctly. 8 – Fig. 7

Focus specimen
correctly at a high
magnification.
Loosen it properly. 9 – Fig 8

Tighten it properly. 9 – Fig 8

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MAINTENANCE

Z730 STEREO MICROSCOPE

Please remember to

never

leave the microscope with 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
this service. Should unexpected problems be experienced with your instrument, proceed as follows:

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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
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

component should be shipped prepaid and insured.

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distributor can arrange for

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distributor or to

. The microscope or

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 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 then
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. 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.

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