Swift SM91 Manuel utilisateur

Swift SM90,M28Z,M29TZ Series

Stereo Microscope

Use and Care Manual

SWIFT OPTICAL Enduring Quality and Technical Excellence.

SWIFT SM90 SERIES STEREO MICROSCOPE

The Swift SM90 Series stereo microscope is a full size, well-

balanced, stereoscopic instrument producing an erect, three-

dimensional image with a large, comfortable field of view. The

SM90 Series features a modular design which allows the use of other

Swift modular heads to provide maximum versatility of the

instrument for classroom use. It is built to the highest, most rigid

optical and mechanical standards.

SWIFT M28Z / M29TZ ZOOM STEREO MICROSCOPES

The Swift M28Z / M29TZ zoom stereo microscope is ideal for

laboratory, industrial and educational use. The M28Z /M29TZ is

designed to produce a crisp image (erect) with a generous field of

view and an excellent depth of focus. It features zoom objectives

with continuous magnification ranges from 10X to 40X which is not

possible with a fixed power stereo microscope.

SM90 SERIES STEREO MICROSCOPE SPECIFICATIONS

Model Number

SM91

SM95

SM98

Objectives

1X, 2X

1X, 3X

2X, 4X

Eyepieces

W10X, FN23

Total

Magnification/

Field of View

10X / 23mm

20X / 11.5mm 10X / 23mm

30X / 7.67mm 20X / 11.5mm

40X / 5.75mm

Working

Distance 80mm 80mm 80mm

Stand

SM90CL

Illuminator

(incident &

transbase)

3W, 5500K LED 3W, 5500K LED 3W, 5500K LED

M28Z/M29TZ STEREO ZOOM MICROSCOPE SPECIFICATIONS

Model Number

M28Z

M29TZ

Objectives 1X - 4X 1X - 4X

Eyepieces W10X, FN23 W10X, FN23

Total Magnification/

Field of View

10X – 40X /

23mm – 5.75mm

10X – 40X /

23mm – 5.75mm

Working Distance 80mm 80mm

Stand SM90CL SM90CL

SM90CL Illuminator

(incident & transmitted) 3W, 5500K LED 3W, 5500K LED

Eyepiece Tube

Head

Top (incident)

Illuminator

Focusing

Control Knob

Illuminator

On/Off

Switches

Illuminator Dimmer

Control

Turret

Stage Clip

Stage Plate

Stand

(SM91-SM90CL Pictured)

Diopter

Adjustment

Bottom

(transmitted)

Illuminator

Eyepiece

(M28Z-SM90CL pictured)

Magnification Knob

Diopter

Adjustment

COMPONENTS OF THE STEREO MICROSCOPE

BOTTOM ILLUMINATOR – The light source that is mounted in the

base to provide trans-illumination.

DIOPTER ADJUSTMENT – Located on the left eyepiece tube (SM90)

or left and right eye tubes (M28Z/M29TZ). This adjustment is used

to fine focus the optics to compensate for visual differences

between the user’s eyes.

EYEPIECE – The upper optical element that further magnifies the

primary image of the specimen and brings the light rays in focus at

the eyepoint.

EYEPIECE TUBE – The part of the head that holds the eyepieces in

place. Set screws in the eyepiece tubes can be used to lock the

eyepieces in place.

STAGE CLIP – Used to hold specimen in place.

FOCUSING CONTROL KNOB – The focusing control knobs located on

either side of the stand are used to raise or lower the head to bring

the specimen into focus. The control knobs incorporate a slip

clutch system which prevents the head from traveling past both

ends of the focusing range. When the focusing limit is reached, the

clutch system begins to slip to prevent gear damage.

HEAD – The 360˚ rotatable component that contains all of the

optical elements of the stereo microscope including the eyepieces,

refracting prisms and objective lenses. The head of the SM90 series

and M28Z / M29TZ is designed to allow users to adjust the

interpupillary distance of the eyepieces for proper viewing.

ILLUMINATOR DIMMER CONTROL – The intensity of the top

(incident light) LED or bottom (trans-illumination) LED can be

adjusted to the preferred brightness (0 through 9) by using the

dimmer control located on the side of the base.

ILLUMINATOR ON/OFF SWITCHES – A tri-illumination system is

incorporated into the stand. The illumination system is controlled

by top (incident light) and bottom (trans-illumination) on/off

switches located at the base of the stand. The incident illuminator

is used for opaque specimens, while the trans-illuminator

effectively illuminates the internal structure of transparent

specimens. Translucent specimens may be seen in greater detail if

both illuminators are used simultaneously.

MAGNIFICATION KNOB – Used to change the M28Z and M29TZ

magnification settings.

STAGE PLATE – Opaque and black and white stage plates are

provided with the microscope stand. The opaque stage plate allows

light from the bottom illuminator to pass through. The black and

white stage plates can be used for additional contrast to the

specimen that is being viewed.

STAND – Used to support the stereo microscope head. The height is

adjustable which allows the head to change its focusing range. The

stand also contains the top and bottom Illuminators.

TOP ILLUMINATOR – The round-shaped housing which contains a

light source that can be adjusted up or down to illuminate the

desired spot on the stage plate.

TURRET – The round barrel that houses the objective lenses. The

SM90 Series has two magnifications that can be changed by rotating

the turret to a different set of objective lenses.

OPERATING YOUR SM90 SERIES STEREO MICROSCOPE

1. Place the specimen onto the stage plate and select the type of

illumination. If the specimen is transparent, turn on the bottom

illumination. If the specimen is opaque, turn on the top

illuminator.

2. The SM90 is equipped with two built-in magnifications. To

change magnifications, rotate the turret one direction or to the

other as far as it will move. This will place one pair of

objectives in alignment for viewing. The power that is in use is

marked on the objective barrel.

3. Look through the eyepieces and rotate the focus control knob to

focus the specimen in the field of view.

4. Grasp the eyepiece tubes and move them either closer together

or farther apart, to see one clear image. Note, if two separate

images are observed, the eyepiece tubes are too far apart and

should be moved together. If two overlapping images are seen,

the eyepiece tubes are too close together and should be moved

apart.

5. Close your left eye and adjust the focus controls so the image is

in sharp focus, while viewing with the right eye only.

6. Close your right eye and while viewing with the left eye

only, adjust the diopter ring on the left eyetube to bring the

image of the specimen into sharp focus. The optical system is

now adjusted to your particular vision.

7. Rotate the turret to switch to another magnification if

necessary. Minor focusing using the focusing control knob may

be required.

OPERATING YOUR M28Z / M29TZ SERIES

STEREO ZOOM MICROSCOPE

1. Place the specimen onto the stage plate and select the type of

illumination. If the specimen is transparent, turn on the bottom

illumination. If the specimen is opaque, turn on the top

illuminator.

2. Turn the diopter adjustments (on the eyepiece tubes) until the

rotatable diopter tube touches the silver line on the eyepiece

tubes.

3. Grasp the eyepiece tubes and move them either closer together

or farther apart, to see one clear image. Note, if two separate

images are observed, the eyepiece tubes are too far apart and

should be moved together. If two overlapping images are seen,

the eyepiece tubes are too close together and should be moved

apart.

4. Rotate the magnification knob to 4.0X (zoom in). Now adjust

the focus with the focusing control knob.

5. Rotate the magnification knob (zoom out) to 1.0X and focus

each eye (one after the other) with only using the diopter

adjustments. (This may be achieved by closing one eye while

the other is being adjusted).

6. Repeat adjustments 4 and 5 if further focus is required.

7. Once the diopter adjustment has been made for each eye, the

user can operate the focusing knobs on the microscope stand to

get new specimens into focus.

SERVICE

Use and store your instrument in a dry environment. When not in

use, microscopes should be stored with dust covers in place and

illuminators turned off. Avoid direct sunlight, high temperatures,

moisture, smoke, and fungus.

Your Swift stereo microscope is designed to function satisfactorily

with only ordinary maintenance. The instrument should be

periodically serviced by a qualified, authorized service technician,

who will clean, re-lubricate and perform routine adjustments.

Unauthorized personnel should never disassemble lens assemblies or

other precision components. For information regarding service,

contact your local authorized Swift dealer or Swift customer service

at (877) 967-9458.

BULB REPLACEMENT

Unplug the stereo microscope from the electrical outlet and

remove specimens from the stage before you attempt to replace

a LED. To prolong the life of the LED, you should always turn off the

unit when not in use.

The top illuminator bulb is Swift #MA14778, 3W, 5500K LED bulb.

The top bulb may be replaced by carefully laying your microscope

on its back so that the top light is facing up. Unscrew the top light

cover to expose the LED bulb assembly. Carefully remove the LED

condenser lens to gain access to the two Philips screws holding LED

bulb down, and remove them. Approximately 1” below the LED

bulb assembly on the outside of the top light barrel are three

1.27mm hex head set screws. Loosen all three set screws and

detach the LED wiring harness within the barrel. Remove the old

LED bulb assembly, attach the new LED bulb assembly and assemble

in the reverse.

The transmitted (bottom) illumination bulb is Swift #MA14778, 3W,

5500K LED bulb. The bottom bulb may be replaced by carefully

laying your stereoscope on its side and using a Phillips screw driver

remove the four screws securing the rubber feet and base plate to

illuminator base. Remove three 3mm Phillips head screws securing

lamp housing to lamp bracket; then remove lamp housing. Using a

5.5mm hex nut driver, remove two nuts securing the 3W LED lamp

assembly. Carefully unplug LED lamp connector (attached to LED

socket located on circuit board). Replace LED lamp assembly and

then, reverse the above process.

TENSION CONTROL OF FOCUSING MOVEMENT

The focus tension is easily adjusted by using the Swift adjustment

wrench. This wrench fits the tension collar found on the focusing

controls, between the knob and upright support. A clockwise turn

of this collar moves it toward the upright support and increases

tension, while a counter clockwise turn moves the collar toward the

knob and decreases tension (see illustration).

CLEANING

Eyepieces should be cleaned as often as necessary to allow

unobstructed viewing. Clean the eyepieces by brushing away dust

particles using a soft camel hair brush or with air pressure, then

moistening the lens by breathing onto it. Wipe the lens carefully

with quality lens tissue. If dirt or other foreign matter still remains,

it may be necessary to use water or optical cleaner (eyeglass or

camera lens). Note: the lens tissue should be moistened, not

saturated, for cleaning, after which the lens should be dried using a

quality lens tissue. Painted surfaces should be cleaned with soapy

water or mild non-abrasive cleaners and a soft cloth. Do not use

solvents on painted surfaces.

COMMON PROBLEMS IN MICROSCOPY

If you have a problem, you may be able to correct it yourself. Here

are a few common problems and easy solutions you may want to try

before calling for service.

CAUTION – Never disassemble mechanical or optical components.

This servicing should only be done by an authorized Swift technician.

The Limited Lifetime Warranty will be null and void if the

mechanical or optical components are disassembled by a non-Swift

dealer.

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