BestScope BLM2-241 User manual

Biological Microscope

BLM2-241

Instruction Manual

This manual is for biological microscope Model BLM2-241. To ensure the safety, obtain optimum

performance and to familiarize yourself fully with the use of this microscope, it is strongly recommended

that you study this manual thoroughly before operating the microscope. This manual is mainly for optical

part, regarding the manual for the LCD digital camera, please refer to the camera manual and software

manual.

BestScope International Limited

CONTENTS BLM2-241

CONTENTS……………………………………………………………

USER NOTICES……………………………………………………

1 Components Name ………………………………………………

2 Assembly …………………………………………………………

2.1 Assembly Diagram ………………………………………………

2.2 Assembly Procedures ……………………………………………

3 Adjustment ………………………………………………………

3.1 Adjustment Set Diaphragm…………………………………………

3.2 Adjustment Procedures ……………………………………………

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

5 Outfit………………………………………………………………

6 Trouble Shooting…………………………………………………

BestScope International Limited

USER NOTICE BLM2-241

I. Safety Note

1. Open the box carefully to avoid the accessories, like lens, dropping to ground or 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 flat, horizontal and firm enough.

3. When moving the microscope, carefully carry it with the handle and the base.

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 and cut off the power supply before

replacing the bulb or the fuse. If you replace the bulb during use or right after use, allow the

lamp bulb and the lamp house to cool completely before touching.

(Designated bulb：6V/20W Halogen Lamp)

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

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

8. Always use the power cord provided by BestScope.

II. Maintenance and Care

1. All the lenses have been adjusted properly; do not dismount them by yourself please.

2. The nosepiece and coarse and fine focusing parts are so delicate that it is forbidden to

disassemble them carelessly by yourself.

3. Keep the instrument clean, and do not pollute the optical element when wiping away the dust

on the instrument.

4. The contaminations on the prism, like fingerprints and oil smudges, could be gently wiped with

a piece of soft cloth or tissue paper, gauze which has been immersed in pure alcohol or ether.

(Note that the alcohol and ether are highly flammable, do keep them away from the fire or

potential sources of electrical sparks, and use them in a drafty room as possible as you can.)

5. Do not attempt to use organic solvents to clean the microscope components other than the

glass components. To clean them, use a lint-free, soft cloth slightly moistened with a diluted

neutral detergent.

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

the splash.

7. Do not disassemble any parts of the microscope, as this will affect the function or reduce the

performance of the microscope.

8. Place the instrument in a cool, dry position. When not using the microscope, keep it covered

with a dust cover. Make sure the lamp socket is cool before covering the microscope.

BestScope International Limited

1.Components Name BLM2-241

Eyepiece

Binocular viewing head

Nosepiece

Objective

Main body

BestScope International Limited

①

②

BLM2-241

2 Assembly

2-1 Assembly 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 changing the components, you will need it again.

Main body

Objective

Trinocular

viewing head

10X Eyepiece

④

③

Power cord

BestScope International Limited

BLM2-241

2.2 Assembly Procedure

Fig.1

Fig.3

Fig.2

2.2.1 Installing trinocular viewing head

(Fig.1-2)

Insert the binocular viewing head into the

microscope head and turn it to a proper

position, then screw down the bolt to fix it.

2.2.2 Installing the eyepiece (Fig3-4)

Insert the eyepiece into the eyepiece tube

until they are against each other, as shown

in Fig.4.

Fig.4

BestScope International Limited

BLM2-241

Fig.6

Fig.5

Fig.7

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 by the

sequence of low to high magnification

Installing objective this way will make the

change of magnification to be easier during

using.

Clean the objective 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”,

that means the objective is in place.

.2.4 Mounting the filters (Fig.7)

1. Place the required filter in front of the

condenser..

★the filter of the standard outfit is green and

baby blue.

BestScope International Limited

BLM2-241

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. Set the main switch① to “O” (off) state

before connecting the power cord.

2. Insert the plugs② into the power jack

③of the microscope safely.

3. Plug the power cord④into the power

supply receptacle⑤. 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.

★A wide range of voltage ,like 100V～240V,

is acceptable for this microscope.

2.2.6 Replacing the fuse (Fig.8-10)

Do remember to set the main switch①to

the state “O” (OFF) and unplug the power cord

before replacing the fuse. Rotate the fuse⑥

out of the holder⑦with the “--”type

screwdriver, replace with a new fuse, then

rotate it back to the holder again.

Fig.8

Fig.9

Fig.10

BestScope International Limited

Fig.11

BLM2-241

Fig.12

2.2.7 Installing and Replacing the bulb

(Fig.11-13)

Please use the specified halogen Lamp

6V20W.

1. Pull out the condenser holder as shown in

Fig.11.

2. Hold the bulb①after you wrap it with

gauze or other protection materials, and

then insert its pin②deeply into the jack

in the lamp holder.

3. During microscope using or soon after it is

turned off, the bulb, the lamp house and

nearby parts will be very hot and will

cause serious burns. Please turn the main

switch to “O” (off) and disconnect the

power plug, and make sure the bulb, the

lamp room and periphery are all cool.

Then, you can do your replacing.

Insert the bulb gently. Squeezing too hard

will damage the bulb.

To prevent reduced bulb life or cracking, do

not touch the bulb with bare hands. If

fingerprints are accidentally left on the

bulb, wipe the bulb with a soft cloth.

4. Place the condenser holder back and

press fit.

Fig.13

BestScope International Limited

3. Adjustment and operation BLM2-241

3.1 Adjustment set diagram (Fig.14-15)

Right Fine Focus Knob

Right Coarse Focus Knob

TensionAdjustment Collar

Main Switch

Portrait Adjustment Knob

Lateral Adjustment Knob

Brightness Adjustment Knob

Fig.14

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