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Part names and structure

*1 Facepiece is available in two sizes: Size M (standard) and Size S.

 

1021KC Welder’s Ozone Filter for 1021R, designed to remove ozone
which is generated during welding, and 1021KB Odor Filter for 1021R,
designed to remove odor such as mercaptans, are also available (option).

Exh

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tion v

a

lve 

(Type T-6K)

Exh

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tion 

v

a

lve cover

Exh

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tion 

v

a

lve 

s

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Filtering m

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(1021 Mighty Micron Filter or 
 1021 Mighty Micron Filter-02)

Filter 
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ket

Inh

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tion v

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lve 

(Ro

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nd 

s

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pe)

Filter 
c

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F

a

cepiece

*

1

He

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d

ba

nd Type RB

Filter cover

S

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lit

Pl

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tic molded cr

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B

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opening

User Instruction

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Before use of this respirator, read carefully and understand this User Instruction of
Model 1021R to obtain designed protection.

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Keep this User Instruction as useful reference if you have any questions during usage.

Replaceable Type Particulate Respirator

(Direct connection type, half-facepiece, Category: RL2)

Model 1021R-06
Japan National Assay Registration No. TM207
Model 1021R-07
Japan National Assay Registration No. TM545
*Before use, make sure that the approval label is attached on the respirator.

Approval labels are attached on the filter cover and the rear side of the filter
case.

For Industrial Use ONLY
This product is designed for industrial use only. Make sure that this product
be used by persons who:

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Have sufficient knowledge on occupational health and safety and
respiratory protective equipment; or,

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Work under the close supervision of personnel with sufficient knowledge.

Scope of applications

Model 1021R is a particulate respirator designed to protect the wearer from
breathing particulates, etc. Regardless of the presence of oil mist etc., Model
1021R can be used in the workplaces where:

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Metal fume (including welding fume) diffuses;

Particulate substances with control concentration of 0.1mg

3

or less diffuse;

The use of particulate respirators categorized under the Category 4 for
asbestos removal is allowed; and/or,

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Any works corresponding to the above working environments.
However, NEVER use Model 1021R in the environment specified in the

DANGER” below.

Model 1021R

DANGER

indicates an imminently hazardous
situation. Unless following the
instructions, there is a high possibility of
resulting in 

death or serious injury

.

WARNING

indicates a potentially hazardous
situation. Unless following the
instructions, there is a possibility of
resulting in 

death or serious injury

.

CAUTION

indicates a potentially hazardous situation.
Unless following the instructions, there is
a possibility of resulting in 

light injury or

damage accident.

The following special messages may appear throughout this User
Instruction to warn the wearer of potential hazard. Before reading
the User Instruction, please make sure to read the definitions of
the special messages and understand the contents.

For safe and proper usage

Silicone facepiece

How to use

Inspections prior to use

Make sure to perform the following inspections before donning the respirator.
(Refer to “Inspection Procedure” (page 4) for more details).

Check points

Troubleshooting

Are parts such as filtering material,
inhalation valve, exhalation valve, etc.
properly installed?

Install all parts properly.

Are there any damages such as cracks,
distortions and/or scars, or adherence of
remarkable dirt or foreign objects on
inhalation valve, exhalation valve and/or
facepiece?

Replace the parts or respirator
with new ones. Clean the parts
when adherence of remarkable
dirt and/or foreign objects is
observed.

Are there any damages such as distortion
or hole or adherence of remarkable dirt on
filtering material?

Replace the filtering material
with a new one.

Is headband well elastic without dirt,
damages and/or deterioration?

Replace the headband with a
new one.

Make sure to use only the Koken genuine parts.

Do NOT use this respirator in oxygen-deficient environment (where
the concentration of oxygen is less than 18%) or workplaces where
the concentration of oxygen is unknown or toxic gas exists.

Misuse will result in death or acute intoxication due to lack of oxygen
and/or gas inhalation. Use supplied air respirator in such environment.

Do NOT use this respirator in workplaces categorized as
“Working environment with a possibility of exposure to
radioactive materials due to spillage or related emergency
works,” “Working environment involving asbestos removal
where the use of particulate respirators categorized under
categories other than Category 4 is required,” “Working
environment with a possibility of exposure to dioxins, etc.,” or
“Any works corresponding to these works.”

For these works, use proper respiratory protective devices such as
particulate respirators categorized under RS3 or RL3.

DANGER

Document No. NS OM D-486 (E-001). Translation of Japanese User Instruction on Model 1021R as of July, 2013. Contents described in this User Instruction

may differ from the requirements/specifications exercised outside Japan. In such case, make sure to follow local laws and regulation.

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Do NOT use the respirator in the high-temperature environment where
the respirator itself becomes remarkably hot or in the low-temperature
environment where moisture from the exhaled breath becomes frozen.

Deforming of parts or freezing may cause exhalation valve etc. to
malfunction, resulting in leakage of toxic substances into the respirator.

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Make sure that facepiece is well fit on the face.

Check the fit of the facepiece according to the “Performing fit test” (page 2).

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Airtight cannot be maintained under the following conditions,
which may cause hazardous substances to leak into the facepiece.
Do NOT use the respirator until improvements are made.

• There is beard, sideburns, and/or hair that come inside the face-

contacting area of the respirator.

• There is mustache and/or chin beard that interfere the operation of

the exhalation valve.

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Do NOT use the respirator if the wearer has a disorder in
respiratory or circulatory system, or the doctor determines that
the wearer does not have a fitness to wear a respirator.

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If spatters or heavy sparks are generated in such works as
gouging, use a dust hood together with a faceshield.

There is a possibility that spatters or sparks leak through the gap
between the faceshield and the respirator.

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When working in a confined space, be careful not to bang the
respirator against the wall.

The respirator slipped out of place may cause hazardous substance
to leak into the facepiece.

WARNING

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