Hitachi CR 18DMR Handling Instructions Manual

ブランド: Hitachi

モデル: CR 18DMR

カテゴリー: パワーツール

タイプ: Handling Instructions Manual

Cordless Reciprocating Saw

CR 18DMR

HANDLING INSTRUCTIONS

Read through carefully and understand these instructions before use.

910

11 12

13 14

15 16

17 18

19 20

L L

N M

21 22

23 24

25 26

27 28

29 30

11.5 mm

Rechargeable battery

Latch

Pull out

Insert

Handle

Push

Insert

Pilot lamp

Hole for connecting the rechargeable battery

Lever

Front cover

Blade

Plunger slit

Another blade

Blade holder

Machine oil

Rubber Cap

Blade hole

Hexagonal bar wrench

Base

Set screw 12 mm

Lock-off button

Free

Lock

Stroke

Wear limit

Nail of carbon brush

Protrusion of carbon brush

Contact portion outside brush tube

31 32

12 3

䡬

° °

䡬

GENERAL OPERATIONAL PRECAUTIONS

1. Keep work area clean. Cluttered areas and benches

invite accidents.

2. Avoid dangerous environment. Don’t expose power

tools and charger to rain. Don’t use power tools

and charger in damp or wet locations. And keep

work area well lit. Never use power tools and

charger near flammable or explosive materials.

Do not use tool and charger in presence of

flammable liquids or gases.

3. The appliance is not intended for use by young

children or infirm persons without supervision.

Young children should be supervised to ensure

that they do not play with the appliance. All visitors

should be kept safe distance from work area.

4. Store idle tools and charger. When not in use,

tools and charger should be stored in dry, high

or locked-up place – out of reach of the children

and infirm persons. Store tools and charger in a

place where the temperature is less than 40°C.

5. Don’t force tool. It will do the job better and safer

at the rate for which it was designed.

6. Use right tool. Don’t force small tool or attachment

to do the job of a heavy duty tool.

7. Wear proper apparel. Do not wear loose clothing

or jewelry. They can be caught in moving parts.

Rubber gloves and non-skid footwears are

recommended when working outdoor.

8. Use eye protection with most tools. Also use face

or dust mask if cutting operation is dusty.

9. Don’t abuse cord. Never carry charger by cord or

yank it to disconnect from receptacle. Keep cord

from heat, oil and sharp edges.

10. Secure work. Use clamps or a vise to hold work.

It’s safer than using your hand and it frees both

hands to operate tool.

11. Don’t overreach. Keep proper footing and balance

at all times.

12. Maintain tools with care. Keep tools sharp at all

times, and clean for best and safest performance.

Follow instructions for lubricating and changing

accessories.

13. When the charger is not in use, or when being

maintained and inspected, disconnect its power

cord from the receptacle.

14. Remove chuck wrenches and wrenches. Form habit

of checking to see that wrenches are removed

from tool before turning it on.

15. Avoid accidental starting. Don’t carry tool with

finger on switch.

16. To avoid danger, always use only the specified charger.

17. Use only genuine HITACHI replacement parts.

18. Do not use power tools for applications other than

those specified in the Handling Instructions.

19. To avoid personal injury, use only the accessories

or attachment recommended in these handling

instructions or in the HITACHI catalog.

20. If the supply cord of this charger is damaged, the

charger must be returned to the HITACHI

authorized service center for the cord to be

replaced. Let only the authorized service center

do the repairing. The Manufacturer will not be

responsible for any damages or injuries caused

by repair by the unauthorized persons or by

mishandling of the tool.

21. To ensure the designed operational integrity of

power tools and charger, do not remove installed

covers or screws.

22. Always use the charger at the voltage specified

on the nameplate.

23. Do not touch movable parts or accessories unless

the battery has been removed.

24. Always charge the battery before use.

25. Never use a battery other than that specified. Do not

connect a usual dry cell, a rechargeable battery other

than that specified or a car battery to the power tool.

26. Do not use any transformer that has a booster.

27. Do not charge the battery from an engine electric

generator or DC power supply.

28. Always charge indoors. Because the charger and

battery heat slightly during charging, charge the

battery in a place not exposed to direct sunlight;

where the humidity is low and the ventilation is good.

29. When working in a high place, pay attention to

the activities below to make sure there are no

people below.

30. Use the exploded assembly drawing on this

handling instructions only for authorized servicing.

31. If the supply cord is damaged, it must be replaced

by the manufacture or its service agent or a similarly

qualified person in order to avoid a hazard.

PRECAUTIONS ON USING CORDLESS

RECIPROCATING SAW

1. Always charge the battery at a temperature of 10 –

40°C. A temperature of less than 10°C will result in

over charging which is dangerous. The battery cannot

be charged at a temperature higher than 10°C.

The most suitable temperature for charging is that

of 20 – 25°C.

2. Do not use the charger continuously.

When one charging is completed, leave the charger for

about 15 minutes before the next charging of battery.

3. Do not allow foreign matter to enter the hole for

connecting the rechargeable battery.

4. Never disassemble the rechargeable battery and

charger.

5. Never short-circuit the rechargeable battery. Short-

circuiting the battery will cause a great electric

current and overheat. It results in burn or damage

to the battery.

6. Do not dispose of the battery in fire.

If the battery is burnt, it may explode.

7. When using this unit continuously, the unit may

overheat, leading to damage in the motor and

switch. Please leave it without using it for

approximately 15 minutes.

8. Do not insert object into the air ventilation slots

of the charger.

Inserting metal objects or inflammables into the

charger air ventilation slots will result in electrical

shock hazard or damaged charger.

9. Using an exhausted battery will damage the charger.

10. Prior to cutting into walls, ceillings or floors, ensure

there are no electric cables or conduits inside.

11. Bring the battery to the shop from which it was

purchased as soon as the post-charging battery

life becomes too short for practical use. Do not

dispose of the exhausted battery.

12. Wear earplugs to protect your ears during operation.

13. Do not touch the blade during or immediately

after operation. The blade becomes very hot during

operation and could cause serious burns.

14. Always hold the body handle and front cover of

the power tool firmly. Otherwise the counterforce

produced may result in inaccurate and even

dangerous operation.

15. Remove the battery from tool or place the switch in

the locked or off position before making any

adjustments, changing accessories, or storing the tools.

SPECIFICATIONS

POWER TOOL

Model CR18DMR

No-Load Speed 0 – 2100 min

Stroke 28 mm

Capacity Mild Steel Pipe: O.D. 90 mm

Vinyl Chloride Pipe: O.D. 90 mm

Wood: Depth 90 mm

Mild Steel Plate: Thickness 10 mm

Rechargeable battery

EB1820L Ni-Cd battery, 18 V (2.0 Ah 15 cells)

EB1826HL Ni-MH battery, 18 V (2.6 Ah 15 cells)

EB1830HL Ni-MH battery, 18 V (3.0 Ah 15 cells)

Weight 3.8 kg

STANDARD ACCESSORIES

1 Blade (No. 103) ............................................................................................................... 1

2 Hexagonal bar wrench ................................................................................................... 1

3 Charger (UC24YFA) ......................................................................................................... 1

4 Plastic case ....................................................................................................................... 1

CR18DMR

CHARGER

Model UC24YFA UC18YG

Charging voltage 7.2 – 24 V 7.2 – 18 V

Weight 0.6 kg 0.3 kg

OPTIONAL ACCESSORIES (sold separately)

1. Battery (EB1820L, EB1826HL, EB1830HL)

2. Blades

(1) No. 1 Blade (10) No. 101 Blade

(2) No. 2 Blade (11) No. 102 Blade

(3) No. 3 Blade (12) No. 103 Blade

(4) No. 4 Blade (13) No. 104 Blade

(5) No. 5 Blade (14) No. 105 Blade

(6) No. 8 Blade (15) No. 106 Blade

(7) No. 9 Blade (16) No. 107 Blade

(8) No. 95 Blade (17) No. 108 Blade

(9) No. 96 Blade (18) No. 121 Blade

(19) No. 131 Blade

(20) No. 132 Blade

䡬 (1) – (9) : HCS Blades (HCS : Highspeed Carbon

Steel)

䡬 (10) – (20) : Bl-METAL Blades

Refer to Table 6, 7 and 8 for use of the blades.

Optional accessories are subject to change without

notice.

APPLICATIONS

䡬 Cutting pipe and angle steel.

䡬 Cutting various lumbers.

䡬 Cutting mild steel plates, aluminum plates, and

copper plates.

䡬 Cutting synthetic resins, such as phenol resin and

vinyl chloride.

For details refer to the section entitled “SELECTION OF

BLADES”.

Standard accessories are subject to change without notice.

BATTERY REMOVAL/INSTALLATION

CAUTION

Be sure to keep the switch turned off and the lock-

off button moved to right position (lock position)

(See Fig. 17).

1. Battery removal

Hold the housing tightly and push the battery latches

to remove the battery (see Figs. 1 and 2).

CAUTION

Never short-circuit the battery.

2. Battery installation

Insert the battery while observing its polarities (see

Fig. 2).

CHARGING

〈UC24YFA〉

Before using the Cordless Reciprocating Saw, charge

the battery as follows.

1. Connect the charger’s power cord to a receptacle

When the power cord is connected, the charger’s

pilot lamp will blink in red (At 1-second intervals).

2. Insert the battery into the charger

Firmly insert the battery into the charger till it

contacts the bottom of the charger and checking

the polarities as shown in Fig. 3.

3. Charging

When inserting a battery in the charger, charging

will commence and the pilot lamp will light up

continuously in red.

When the battery becomes fully recharged, the pilot

lamp will blink in red (At 1-second intervals) (See

Table 1).

(1) Pilot lamp indication

The indications of the pilot lamp are shown in

Table 1, according to the condition of the charger

or the rechargeable battery.

Table 1

Indications of the pilot lamp

Lights for 0.5 seconds. Does not light for 0.5

seconds. (off for 0.5 seconds)

Lights continuously

Lights for 0.5 seconds. Does not light for 0.5

seconds. (off for 0.5 seconds)

Lights for 0.1 seconds. Does not light for 0.1

seconds. (off for 0.1 seconds)

Lights continuously

Before

charging

While

charging

Charging

complete

Charging

impossible

Charging

impossible

Blinks

(RED)

Lights

(RED)

Blinks

(RED)

Flickers

(RED)

Lights

(GREEN)

Malfunction in the battery

or the charger.

The battery temperature

is high, making recharg-

ing impossible.

(2) Regarding the temperatures of the rechargeable

battery.

The temperatures for rechargeable batteries are as

shown in the table 2, and batteries that have become

hot should be cooled for a while before being recharged.

Table 2

(3) Regarding recharging time

Depending on the type of battery, the recharging

time will become as shown in Table 3.

Table 3 Recharging time (At 20°C)

NOTE

The recharging time may vary according to

temperature and power source voltage.

4. Disconnect the charger’s power cord from the

receptacle

5. Hold the charger firmly and pull out the battery

NOTE

After operation, pull out batteries from the charger

first, and then keep the batteries properly.

Temperatures at

Battery type which the battery

can be recharged

EB1820L –5°C – 60°C

EB1826HL, EB1830HL 0°C – 45°C

Battery type Recharging time

EB1820L Approx. 50 min.

EB1826HL Approx. 60 min.

EB1830HL Approx. 70 min.

Regarding electric discharge in case of new batteries,

etc.

As the internal chemical substance of new batteries

and batteries that have not been used for an

extended period is not activated, the electric

discharge might be short when using them the first

and second time. This is a temporary phenomenon,

and normal time required for recharging will be

restored by recharging the batteries 2 – 3 times.

How to make the batteries perform longer.

(1) Recharge the batteries before they become

completely exhausted.

When you feel that the power of the tool becomes

weaker, stop using the tool and recharge its battery.

If you continue to use the tool and exhaust the

electric current, the battery may be damaged and

its life will become shorter.

(2) Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after

use. If such a battery is recharged immediately after

use, its internal chemical substance will deteriorate,

and the battery life will be shortened. Leave the battery

and recharge it after it has been cooled for a while.

CAUTION

䡬 If the battery is charged while it is heated because

it has been left for a long time in a location subject

to direct sunlight or because the battery has just

been used, the pilot lamp of the charger lights up

green. In such a case, first let the battery cool, then

start charging.

䡬 When the pilot lamp flickers in red quickly (at 0.2-

second intervals), check for and take out any foreign

objects in the charger’s battery installation hole. If

there are no foreign objects, it is probable that the

battery or charger is malfunctioning. Take it to your

authorized Service Center.

䡬 Since the built-in micro computer takes about 3

seconds to confirm that the battery being charged

with UC24YFA is taken out, wait for a minimum of

3 seconds before reinserting it to continue charging.

If the battery is reinserted within 3 seconds, the

battery may not be properly charged.

〈

UC18YG

〉

Before using the power tool, charge the battery as follows.

1. Connect the charger power cord to the receptacle

Connecting the power cord will turn on the charger.

2. Insert the battery into the charger

Insert the battery firmly while observing its direction,

until it contacts the bottom of the charger (See

Fig. 4) (the pilot lamp lights up).

CAUTION

If the pilot lamp does not light up, pull out the

power cord from the receptacle and check the

battery mounting condition.

(1) Regarding the temperatures of the rechargeable battery

The temperatures for rechargeable batteries are as

shown in Table 4.

Table 4 Recharging ranges of batteries

(2) Regarding recharging time

Depending on the combination of the charger and

batteries, the charging time will become as shown

in Table 5.

Table 5 Charging time (At 20°C)

The pilot lamp goes off to indicate that the battery

is fully charged.

The battery charging time becomes longer when a

temperature is low or the voltage of the power

source is too low.

When the pilot lamp does not go off even if more

than 120 minutes have elapsed after starting of the

charging, stop the charging and contact your

HITACHI AUTHORIZED SERVICE CENTER.

CAUTION

If the battery is heated due to direct sunlight,

etc., just after operation, the charger pilot lamp

may not light up. At that time, cool the battery

first, then start charging.

3. Disconnect the charger’s power cord from the

receptacle

4. Hold the charger firmly and pull out the battery

NOTE

After charging, pull out batteries from the charger

first, and then keep the batteries properly.

Regarding electric discharge in case of new batteries,

etc.

As the internal chemical substance of new batteries

and batteries that have not been used for an

extended period is not activated, the electric

discharge might be low when using them the first

and second time. This is a temporary phenomenon,

and normal time required for recharging will be

restored by recharging the batteries 2 – 3 times.

How to make the batteries perform longer.

(1) Recharge the batteries before they become

completely exhausted.

When you feel that the power of the tool becomes

weaker, stop using the tool and recharge its battery.

If you continue to use the tool and exhaust the

electric current, the battery may be damaged and

its life will become shorter.

(2) Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after

use. If such a battery is recharged immediately after

use, its internal chemical substance will deteriorate,

and the battery life will be shortened. Leave the

battery and recharge it after it has cooled for a while.

PRIOR TO OPERATION

1. Mounting the blade

This unit employs a detachable mechanism that

enables mounting and removal of saw blades

without the use of a wrench or other tools.

Temperatures at

Rechargeable batteries which the battery

can be recharged

EB1820L 0°C – 45°C

Charger

UC18YG

Battery

EB1820L Approx. 50 min.

(1) Turn on and off the switching trigger several times

so that the lever can jump out of the front cover

completely. Thereafter, turn off the switch and

remove the battery (Fig. 5).

CAUTION

Be absolutely sure to keep the switch turned off

and the battery removed to prevent any accident.

(2) Push the lever in the direction of the arrow mark

shown in Fig. 6 marked on the lever (Fig. 6).

(3) Insert the saw blade all the way into the small slit

of the plunger tip with the lever pushing. You can

mount this blade either in the upward or downward

direction (Fig. 7, Fig. 8).

(4) When you release the lever, the spring force will

return the lever to the correct position automatically

(Fig. 9).

(5) Pull the back of the saw blade two or three times

by hand and check that the blade is securely

mounted. When pulling the blade, you will know

it is properly mounted if it clicks and the lever

moves slightly (Fig. 10).

CAUTION

When pulling the saw blade, be absolutely sure to

pull it from the back. Pulling other parts of the blade

will result in an injury.

2. Dismounting the blade

(1) Turn on and off the switching trigger several times

so that the lever can jump out of the front cover

completely. Thereafter, turn off the switch and

remove the battery (Fig. 5).

CAUTION

Be absolutely sure to keep the switch turned off

and the battery removed to prevent any accident.

(2) After you have pushed the lever in the direction

of the arrow mark shown in Fig. 6 and secured it,

turn the blade so it faces downward. The blade

should fall out by itself. If the blade doesn’t fall out,

pull it out by hand.

CAUTION

Never touch the saw blade immediately after use.

The metal is hot and can easily burn your skin.

WHEN THE BLADE IS BROKEN

Even when the saw blade is broken and remains

inside the small slit of the plunger, it should fall

out if you push the lever in the direction of the

arrow mark, and face the blade downward. If it

doesn’t fall out itself, take it out using the procedures

explained below.

(1) If a part of the broken saw blade is sticking out

of the small slit of the plunger, pull out the protruding

part and take the blade out.

(2) If the broken saw blade is hidden inside the small

slit, hook the broken blade using a tip of another

saw blade and take it out (Fig. 11).

MAINTENANCE AND INSPECTION OF SAW BLADE

MOUNT

(1) After use, blow away sawdust, earth, sand, moisture,

etc., with air or brush them away with a brush, etc.,

to ensure that the blade mount can function

smoothly.

(2) As shown in Fig. 12, carry out lubrication around

the blade holder on a periodic basis by use of

cutting fluid, etc.

NOTE

Continued use of the tool without cleaning and

lubricating the area where the saw blade is installed

can result in some slack movement of the lever due

to accumulated sawdust and chips. Under the

circumstances, pull a rubber cap provided on the

lever in the direction of an arrow mark as shown

in Fig. 13 and remove the rubber cap from the lever.

Then, clean up the inside of the blade holder with

air and the like and carry out sufficient lubrication.

The rubber cap can be fitted on if it is pressed firmly

onto the lever. At this time, make certain that there

exists no clearance between the blade holder and

the rubber cap, and furthermore ensure that the

saw-blade-installed area can function smoothly.

CAUTION

Do not use any saw blade with a worn-out blade

hole. Otherwise, the saw blade can come off,

resulting in personal injury (Fig. 14).

3. Moving the base

Loosen the set screw and move the base forward,

as shown in Fig. 15, Fig. 16. Tighten the set screw

slightly, ensure the base does not move back and

forth, and firmly tighten the set screw. Ensure that

the base does not contact the blade.

4. Confirm that the battery is mounted correctly

HOW TO USE

CAUTION

䡬 Do not carry tools with your finger on the switch.

A sudden startup can result in an unexpected injury.

䡬 Be careful not to let sawdust, earth, moisture, etc.,

enter the inside of the machine through the plunger

section during operation. If sawdust and the like

accumulate in the plunger section, always clean it

before use (refer to Fig. 5).

䡬 Do not remove the front cover.

Be sure to hold the body from the top of the front

cover (refer to Fig. 5).

䡬 During use, press the base against the material

while cutting.

Vibration can damage the saw blade if the base is

not pressed firmly against the workpiece.

Furthermore, a tip of the saw blade can sometimes

contact the inner wall of the pipe, damaging the

saw blade.

䡬 Select a saw blade of the most appropriate length.

Ideally, the length protruding from the base of the

saw blade after subtracting the stroke quantity should

be larger than the material (see Fig. 18 and

Fig. 20).

If you cut a large pipe, large block of wood, etc.,

that exceeds the cutting capacity of a blade; there

is a risk that the blade may contact with the inner

wall of the pipe, wood, etc., resulting in damage

(Fig. 19, Fig. 21).

1. Switch operation

(1) Lock-off button

The tool is equipped with a lock-off button. To

activate the trigger lock, move the button to the

right position. Move the button to the left to operate

the tool (Fig. 17).

Always lock the switch when carrying or storing the

tool eliminate unintentional starting.

(2) Trigger switch

This tool is equipped with a variable speed controlled

trigger switch. The tool can be turned "ON" or "OFF"

by squeezing or releasing the trigger. The blade

plunger stroke rate can be adjusted from the

minimum to maximum nameplate stroke rate by

the pressure you apply to the trigger. Apply more

pressure to increase the speed and release pressure

to decrease speed.

2. Cutting metallic materials

CAUTION

䡬 Press the base firmly against the workpiece.

䡬 Never apply any unreasonable force to the saw

blade when cutting. Doing so can easily break the

blade.

䡬 The motor can be locked sometimes, depending on

the combination of the material to be cut and the

blade. Whenever the motor gets locked, switch it

off immediately.

(1) Fasten a workpiece firmly before operation (Fig. 22).

(2) When cutting metallic materials, use proper machine

oil (turbine oil, etc.). When not using liquid machine

oil, apply grease over the workpiece.

CAUTION

The service life of the saw blade will be drastically

shortened if you don’t use machine oil.

3. Cutting lumber

When cutting lumber, make sure that the workpiece

is fastened firmly before beginning (Fig. 23).

CAUTION

䡬 Never apply any unreasonable force to the saw

blade when cutting. Also remember to press the

base against the lumber firmly.

4. Sawing curved lines

We recommend that you use the BI-METAL blade

mentioned in Table 7 (Page 20) for the saw blade

since it is tough and hardly breaks.

CAUTION

Delay the feed speed when cutting the material into

small circular arcs. An unreasonably fast feed may

break the blade.

5. Plunge cutting

With this tool, you can perform plunge cutting on

plywood panels and thin board materials. You can

carry out pocket cutting quite easily with the saw

blade installed in reverse as illustrated in Fig. 25,

Fig. 26, and Fig. 27. Use the saw blade that is as

short and thick as possible. We recommend for this

purpose that you use BI-METAL Blade No. 132

mentioned in Page 20, Table 7. Be sure to use

caution during the cutting operation and observe

the following procedures.

(1) Press the lower part (or the upper part) of the base

against the material. Pull the switch trigger while

keeping the tip of the saw blade apart from the

material (Fig. 24, Fig. 25).

(2) Raise the handle slowly and cut in with the saw

blade little by little (Fig. 26, Fig. 27).

(3) Hold the body firmly until the saw blade completely

cuts into the material (Fig. 28, Fig. 29).

CAUTION

䡬 Avoid plunge cutting for metallic materials. This can

easily damage the blade.

䡬 Never pull the switch trigger while the tip of the

saw blade is pressed against the material. If you

do so, the blade can easily be damaged when it

collides with the material.

䡬 Make absolutely sure that you cut slowly while

holding the body firmly. If you apply any

unreasonable force to the saw blade during the

cutting operation, the blade can easily be damaged.

NOTE

The use of the battery EB1826HL and EB1830HL in

a cold condition (below 0 degree Centigrade) can

sometimes result in the weakened cutting torque

and reduced amount of work. This, however, is a

temporary phenomenon, and returns to normal when

the battery warms up.

SELECTION OF BLADES

To ensure maximum operating efficiency and results,

it is very important to select the appropriate blade best

suited to the type and thickness of the material to be

cut.

NOTE

䡬 Dimensions of the workpiece mentioned in the table

represent the dimensions when the mounting

position of the base is set nearest to the body of

the Cordless Reciprocating Saw. Caution must be

exercised since dimensions of the workpiece will

become smaller if the base is mounted far away

from the body of the Cordless Reciprocating Saw.

1. Selection of HCS blades

The blade number of HCS blades in Table 6 is

engraved in the vicinity of the mounting position

of each blade. Select appropriate blades by referring

to Tables 6 and 8 below.

Table 6: HCS blades

NOTE

No. 1 – No. 96 HCS blades are sold separately as

optional accessories.

Blade Thickness

No.

Uses

(mm)

No. 1 For cutting steel pipe less than

100 mm in diameter

2.5 – 6

No. 2 For cutting steel pipe less than

30 mm in diameter

2.5 – 6

No. 3 For cutting steel pipe less than

30 mm in diameter

Below 3.5

No. 4 For cutting and roughing lumber 50 – 70

No. 5 For cutting and roughing lumber Below 30

No. 8 For cutting vinyl chloride pipe less

than 100 mm in diameter

2.5 – 15

For cutting and roughing lumber Below 100

No. 9 For cutting mild steel pipe less

than 100 mm in diameter when 2.5 – 6

used with cut off guide

No. 95 For cutting stainless steel pipe

less than 100 mm in diameter

Below 2.5

No. 96 For cutting stainless steel pipe

less than 30 mm in diameter

Below 2.5

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Hitachi CR 18DMR Handling Instructions Manual

ブランド: Hitachi

モデル: CR 18DMR

カテゴリー: パワーツール

タイプ: Handling Instructions Manual

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