BestScope BS-2020B Bedienungsanleitung

Biological Microscope

Model：BS-2020B/T

Instruction Manual

This manual is written for biological microscope BS-2020B/T. To ensure the safety, obtain

optimum performance and to familiarize you fully with the use of this microscope, it is

recommended strongly that you study this manual thoroughly before using the microscope and

retain this manual in an easily accessible place near the work desk for future reference.

Bestscope International Limited

CONTENTS BS-2020

User Notices………………………………………………………… 2

1 Components Name…………………………………………………… 4

2 Installation …………………………………………………………… 5

2.1 Installing Diagram…………………………………………………………… 5

2.2 Installing Steps ……………………………………………………………… 6

3 Adjustment & Operation ………………………………………… 10

3.1Adjustment Controls …………………………………………………………… 10

3.2 Operation ………………………………………………………………………… 11

4 Technical Specifications …………………………………………… 14

5. Outfit Table ………………………………………………………… 15

6 Troubleshooting ……………………………………………………16

Bestscope International Limited

User Notices BS-2020

I．Safety note

1. Carefully open the box, avoid the accessories, like lens, dropping to ground and being damaged.

2. Do keep the instrument out of direct sunlight, high temperature or humidity, dusty and easy

shaking environment. Make sure the stage is smooth, horizontal and firm enough.

3. When moving the instrument, please use two hands to grip with the two sides of the microscope

body.

4. When running, the lamp house and nearby parts will be very hot. Please ensure there is enough

cooling room for them.

5. Make sure the instrument is earthed, to avoid lighting strike.

6. For safety, be sure the main switch is in “O”(off) state before replacing the halogen (LED) lamp or

the fuse, then cut off the power, and do the operation after the lamp bulb and the lamp house

completely cool.( specified lamp: Halogen Lamp 6V/20W or LED lamp 3W)

7. Check the input voltage: be sure the input voltage which signed in the back of the microscope is

consistent with the power supply voltage, or it will bring a serious damage to the instrument. Use

the factory supplied power cord, please.

II．Maintenance

1. All the lenses have been well checked and adjusted. It is forbidden to disassemble them yourself.

2. The nosepiece and coarse/fine focus unit have a compact and precise frame, please don’t

disassemble them as possible as you can.

3. Keep the instrument clean, wipe dust regularly, and be attention to avoid contaminating the

optical elements especially.

4. The contaminations on the prism, as finger mark and oil, could be gently wiped with a piece of soft

cloth or tissue paper, gauze which has been immersed in pure alcohol or xylene. (note that the

alcohol and the xylene are all burned easily, do not let them near the fire, and use them in a

drafty room as possible as you can.)

5. Don’t use organic solvent to wipe the non-optical elements, when you need to clean, use the soft

detergent, please.

6. When using, if the microscope is splash by liquid, cut off the power at once, and wipe up the

moisture.

7. Do not disassemble any parts of the microscope. That will affect the function or decline the

performance of the microscope.

8. Place the instrument in a cool, dry position. After using the microscope, remember to cover it

with dust helmet. Do wait for the lamp house cooling completely before cover.

Bestscope International Limited

1. Name of Components BS-2020

Biological Microscope BS-2020B

Eyepiece

Binocular/Trinocular viewing head

双目观察头

Nosepiece

Objective

Body

Condenser

Collector

Bestscope International Limited

2．Installation BS-2020

2.1 Installing Diagram

The following figure shows the installation sequence of the components. The number in the figure

shows the assembly steps.

Before installing, be sure every components is clean, do not score any parts or glass surface.

Keep well with hexagon wrench provided. When replacing the components, you will need it

again.

显微镜体

物镜

Binocular

看

Viewing

Head

头

10X 目

镜

④

③

①

②

电源线

Binocular Viewing Head

10X Eyepiece

Objective

Body

Cable Wire

Bestscope International Limited

BS-2020

2.2 Installing Setps

①

Fig.1

Fig.3

Fig.2

2.2.1 Install the binocular viewing head

(Fig.1-2)

Insert the binocular viewing head into the head of

the body, turn to the right position, then fix up it with

bolt①.

2.2.2 Install the eyepiece (Fig.3-4)

Insert the eyepieces into the eyepiece tube until

they are against each other.

Fig.4 shows the status after the installation.

Note:

Working Environment Requirement：

1．Ambient temperature: 5°C to 40°C

. (41°F to 104°F)，Maximum R.H：85%。

2．High Temperature will result in a mildewing,

dew and even ruinous instrument.

3．Avoid placing the instrument in a dusty

environment. When ending your microscope

operation, please cover it with the dust cover.

4．Lay the microscope in a plan and stable

position please.

Fig.4

Bestscope International Limited

BS-2020

②

①

Fig.6

Fig.5

2.2.3 Installing the Objective (Fig.5-6)

1. Adjusting the coarse focus knob until the

support device of the mechanical stage

reaches its low limit position.

2. Screw the lowest magnification objective

into the nosepiece from the left or the right

side, then revolve the nosepiece clockwise

and mount other objectives in sequence of

magnification.

Installing objective this way will make the

change of magnification easier during

using.

Clean the objectives regularly, for lens is

susceptible to dust.

When operating, use 10×magnification

objective to search and focus specimen

firstly, then replace with higher

magnification objective if necessary.

When replacing the objective, slowly turn

the nosepiece until you hear “clicked”,

which means the objective is in the

required position—center of the light

path.

2.2.4 Install the color filter (Fig.7)

1. Rotate the condenser holder①out as Fig.7

shows.

2. Put the filter②into the condenser holder,

and then switch back the holder.

Baby blue and green filters are available in

standard outfit.

Fig.7

Bestscope International Limited

BS-2020

③②

⑥

④⑤

2.2.5 Connecting the Power Cord

(Fig.8-10)

★The cable and cords are vulnerable

when bent or twisted, never subject the

power cord to excessive force.

1. Before connecting the power cord, switch

the main switch①to “O”(off).

2. Plug the power cord②into the socket③on

microscope safely. Make sure the connection

is well。

3. Plug the power cord④into the power source

socket safely. Make sure the connection is

well。

★Do use the supplied power cord all the

time. If lost or damaged, select the same

standard cord please.

★Either 110V or 220V can be selected as the

input voltage of this microscope. (The input

voltage has been preset in the microscope

before leaving factory.

2.2.6 Replacing the fuse (Fig.7, 9, 10)

Do remember to turn the main switch①

off before replacing the fuse, and unplug the

power cord②. Dig the fuse⑤kits out of the

power source socket③with your fingers,

replace with a new fuse, then insert it back

to the power source socket again.

★250V500mA fuse for 220V.

★250V1Afuse for 110V.

Fig.8

①

Fig.9

Fig.10

Bestscope International Limited

BS-2020

②

①

④

⑥

⑤

2.2.8 Installing and replacing the lamp (Fig.11,

12, 13)

0.246810There are two types of lamp for illumination,

halogen Lamp 6V/20W and LED lamp 3W.

When changing halogen lamp：

1. When being used, or soon after it is turned off, the

lamp, the lamp house and nearby parts will be very hot

and will cause serious burns. Please turn the main

switch on “O” (off), pull up power plug, and make sure

the bulb, the lamp house and periphery are all cool.

Then, you can do your replacing.

2. Loosen the bolt①on the lamp holder window at the

base of the microscope by screwdriver, screw lamp

holder window②out.

3. Pull out the halogen bulb③, hold the bulb after you

wrap it with gauze or other protection materials, then

depress the plugs into the jack on the lamp house.

4. Finally, cover the lamp holder window, screw down the

bolt①.

Please insert the lamp gently, or it will be damaged by

excessive extrusion.

Do not touch the Halogen bulb with your hands. It

will shorten the service life or cause it to burst. If you

leave fingerprints on the surface carelessly, clean it

with a dry soft cloth.

When changing LED lamp：

1. The working life of LED lamp is very long, so it is hard

to be damaged, if the bulb is unfortunately damaged,

please purchase a new one from supplier.

2. Removing the bottom board ⑥on the base of

microscope by screwdriver, after removing the bolt⑤,

LED bulb can be taken down, replaced with a new one,

the new bulb should be fixed on holder with bolt⑤.

3. Fixing the bottom board to the base of microscope with

the original bolt.

Please take down the bottom board slowly when

removing it, or the inside electrical wire may be

damaged.

Fig.11

③

Fig.13

Fig.12

Bestscope International Limited

3. Adjustment & Operation BS-2020

3.1Adjustment Set Diagram (Fig.14-15)

Fig.14

Fig.15

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