Remington Power Tools 494 User Manual

REMINGTON®

Model 494

Powder Actuated
Fastening Tool

N

T

E

D

L

A

N

B

E

O

P

E

R

D

A

T

N

I

O

N

A

T

E

S

T

R

Y

I

F

N

A

G

S

F

O

C

I

R

L

B

P

U

G 028

POWDER ACTUATED TOOL

MANUFACTURERS´ INSTITUTE INC.

Y

®

T

E

™

G 029

Operating
Instructions

482-1

IMPORTANT:

Read this manual and all labels carefully before
operating your powder actuated tool. This manual
should always accompany the tool and be transferred
with it upon change of ownership.

INDEX

Warning: Safety Precautions.................................................................................3-11

Why A Fastener Holds ............................................................................................. 12

Selecting Fasteners and Power Loads .................................................................... 13

Operation ................................................................................................................. 14

Maintenance............................................................................................................. 16

Troubleshooting ....................................................................................................... 16

Parts Centrals .......................................................................................................... 17

Parts List .................................................................................................................. 18

Accessories.............................................................................................................. 19

Tool Disassembly..................................................................................................... 19

Tool Assembly.......................................................................................................... 20

Buffer and Piston Replacement ............................................................................... 21

Application Chart...................................................................................................... 22

Warranty.................................................................................................... Back Cover

REMINGTON

Model 494 Powder Actuated Fastening Tool

The Remington Model 494 Powder Actuated Fastening Tool is designed for use
with Remington 22 caliber Type A crimped loads and Remington Power Fasteners.
Remington power fasteners are manufactured from special steel and heat treated
to produce a very hard yet ductile fastener.

Maximum 3" (76 mm)

Spall Shield

Power Fastener*

Barrel Assembly

Muzzle/Guide

Recommended
Approved
Goggles*

* Not provided with tool

Power Load*

Trigger

101437

2

Warning: Safety Precautions

!

WARNING ICON G 001

The following pages contain detailed warnings, cautions, and rules of safe operation.
Read carefully and become familiar before operating to avoid serious injury. We
expressly disclaim any liability for any injury to persons or damage to property which result
from your failure to take the precautions contained in this manual.

!

WARNING: This tool is designed only for use by qualified operators. Qualification
is obtained through a thorough understanding of the Safety Warnings and operating
instructions as defined in this operating manual. NOTE: The labor regulations of many
states require that the operator of this tool on a job site be thoroughly trained and certified
for competence prior to operating this tool. For certification procedures, call: DESA
Technical Services Department, 1-800-626-2237.

BEFORE USING

1. ALWAYS handle the tool as if it were loaded. Before starting work, check that the tool is

unloaded and the muzzle is clear. NEVER load a tool unless it is going to be used.

DEFECTIVE

2. ALWAYS inspect to make sure the tool is working properly. If the tool does not work properly,

remove from service and tag DEFECTIVE. DO NOT use the tool again until it has been properly
repaired.

G 018

3. Operators and bystanders must ALWAYS wear goggles and ear protection which meet or

exceed ANSI standards.

101437

3

Safety Precautions

POWDER
ACTUATED
TOOLS
IN USE

WARNING

!

482-9

482-10

4. ALWAYS clear the work area on all sides and post appropriate warning signs on job sites.

G 018

482-12

5. ALWAYS make sure the work area is clean from loose material and debris.

HANDLING THE TOOL

G 018

1. NEVER place your hand over the muzzle. Accidental discharge can cause serious injury.

G 018

2. NEVER place your finger on the trigger until the tool’s muzzle is against the work surface.

101437

4

Safety Precautions

POWD

POW

LOAD

D

ER

LO

A

DS

G 018

3. ALWAYS store UNLOADED powder actuated tool and power loads in a locked container. Keep

power loads of different power levels in separate containers.

G 018

482-19

4. NEVER carry or pass a loaded powder actuated tool. NEVER point a powder actuated tool at

anyone.

G 018

5. If the tool is dropped, inspect for damage and repair it before continuing to work. NEVER use

a damaged tool.

482-23

G 018

482-24

6. ALWAYS take precaution to maintain your balance while operating a powder actuated tool.

101437

5

Safety Precautions

?

?

?

G 018

482-25

7. An operator taking medication should take extra precautions while handling the tool. NEVER

drink alcoholic beverages or take medications which impair your vision, balance or judgement
before using a powder actuated tool.

KNOW YOUR FASTENING BASE MATERIAL

Sinks in
with
average
hammer
blow

TOO SOFT

Start

1

GRAY

3

GREEN

G 018

482-28

BROWN

YELLOW

482-31

2

4

Point
flattens

TOO HARD

?

?

?

?

CENTER
PUNCH TEST

482-26

482-29

482-27

Surface
shatters

TOO BRITTLE

482-30

G 018G 018

1. ALWAYS know the thickness and type of base material into which you are fastening. NEVER

GUESS. Test the base material by using the Center Punch Test. The Center Punch Test is

performed by using a hammer to test drive the particular power fastener to be used into the
material. If the point penetrates easily, the material is too soft. If the point becomes blunt, the
material is too hard. If the material fractures, cracks or shatters, the material is too brittle. Test
fastenings can be made if the material shows a clear fastener impression and the fastener point
is not blunted. ALWAYS start with the lowest power load (Gray-Level 1) and proceeding with
the order shown in the lower right-hand figure above. Always wear approved goggles.

101437

6

Safety Precautions

G 018

BRICK

482-33

CAST IRON GLASS

G 018

TILE

2. NEVER attempt to drive power fasteners into very hard or brittle materials including, but not

limited to cast iron, glass, tile, stone, brick, or hardened steel. Materials of this type tend to
shatter and create hazard from flying particles.

G 018

3. NEVER make fastenings in spalled or cracked areas.

G 018

4. NEVER drive power fasteners into thin or easily penetrated materials unless it is backed by

concrete or steel. When in doubt, such as when base material is concealed, conduct a Center
Punch Test (See page 6). Check continually to avoid fastening into unsuitable material,
especially in older buildings.

G 018

5. DO NOT fasten through or within 1/2" of predrilled or pre-punched holes.

101437

7

Safety Precautions

3"

3"

3"

1X

3X

482-38

6. DO NOT drive power fasteners into concrete less than three times as thick as the intended

fastener penetration, within 3" of the edge, within 3" of another power fastener or within 3" of
a failed power fastener.

WELD

3"

482-39

1/2"

482-40

TOO THIN

G 018

3/16" MIN

1"

482-41

7. DO NOT drive power fasteners into steel base material less then 3/16" thick, within 2" of a weld,

within 1/2" of the edge or within 1" of another power fastener.

G 018

8. When fastening into masonry walls, always drive into horizontal mortar joints, never into vertical

mortar joints. BE CAREFUL. A poorly laid joint may permit too much penetration, and/or
unsatisfactory holding power.

OPERATING THE TOOL

1. ALWAYS hold tool perpendicular to work surface.

8

101437