Page 1
DG307
1
DG307
OPERATING INSTRUCTION MANUAL
DO NOT OPERATE THE DG307 TOOL UNTIL
YOU HAVE READ THIS MANUAL AND RECEIVED THE PROPER TRAINING
ACCORDING TO ANSI STANDARD A 10.3-1995.
™
PRIOR TO OPERATING THE DG307 TOOL,
STUDY THIS MANUAL CAREFULLY AND DEVELOP A THOROUGH
UNDERSTANDING OF THE CONTENTS.
PROPER TRAINING ACCORDING TO THE CURRENT ANSI
STANDARD A 10.3, SAFETY REQUIREMENTS FOR POWDER
ACTUATED FASTENING SYSTEMS MUST BE COMPLETED AND
A MASTER QUALIFIED OPERATOR CARD MUST BE OBTAINED
PRIOR TO OPERATION OF THE TOOL. STATE, LOCAL, OR
OTHER REGULATIONS SHOULD ALSO BE FOLLOWED. LAWS,
REGULATIONS, AND STANDARDS REGARDING THE USE
OF POWDER ACTUATED TOOLS MAY PERIODICALLY BE
REVISED. ANY SUCH REVISIONS MAY CHANGE THE SAFETY
AND OPERATING PROCEDURES DESCRIBED IN THIS MANUAL.
MASTER, INC. IS NOT RESPONSIBLE FOR ANY SUCH REVISIONS
WHICH OCCUR AFTER PUBLICATION OF THIS MANUAL. IT IS THE
RESPONSIBILITY OF THE USER TO MAINTAIN FAMILIARITY WITH
THE CURRENT LAWS, REGULATIONS, AND STANDARDS THAT
APPLY TO THE POWDER ACTUATED TOOL.
TO AVOID SERIOUS INJURY OR DEATH:
NEVER CLOSE TOOL WITH ANY PART OF HAND OVER MUZZLE END.
OPERATORS AND BYSTANDERS MUST WEAR
EYE AND HEARING PROTECTION.
R2200
R2200
ALWAYS
ASSUME
TOOL IS LOADED.
DO NOT PLACE A
FINGER ON THE
TRIGGER
OF LOADED TOOL UNTIL MUZZLE END IS AGAINST WORK
SURFACE AND YOU ARE READY TO MAKE A FASTENING. NEVER
PLACE YOUR HAND OVER THE MUZZLE WITH A POWDER LOAD IN
THE TOOL. IF THE TOOL ACCIDENTALLY DISCHARGES THE PISTON
OR FASTENER MAY PENETRATE YOUR HAND RESULTING IN
SERIOUS INJURY.
TOOL OPERATION MUST READ AND UNDERSTAND
THE ENTIRE TOOL MANUAL AND MUST COMPLETE
THE OPERATOR’S EXAM ON THE LAST PAGE. THE
TOOL WARRANTY WILL NOT BE VALID UNTIL THE TEST IS
RECEIVED, WITH A COPY OF YOUR RECEIPT, AND REVIEWED
BY MASTER, INC.
Warranty
Three Year Limited Warranty
MASTER will repair, without charge, any defects due to faulty
materials or workmanship for three years from the date of
purchase. This warranty does not cover part failure due to
normal wear or tool abuse. This warranty does not apply to
accessories or damage caused where repairs have been
made or attempted by others. This warranty gives you
specific legal rights any you may have other rights which vary
in certain states or provinces.
In addition to the warranty, MASTER tools are covered by our:
1 YEAR FREE SERVICE
MASTER will maintain the tool and replace worn parts caused
by normal use, for free, any time during the first year after
purchase.
90 DAY MONEY BACK GUARANTEE
If you are not completely satisfied with the performance of
your MASTER Powder Actuated Tool for any reason, you can
return it within 90 days from the date of purchase with a
receipt for a full refund – no questions asked.
FREE WARNING LABEL REPLACEMENT:
If your warning labels become illegible or are missing call
us for a free replacement.
Introduction
Thank you for purchasing the MASTER DG307 low velocity
powder actuated tool. This tool will provide you with excellent
performance provided the steps for proper operation and
maintenance are followed. Powder actuated fastening
systems can provide a cost effective method of attaching
fixtures for light duty, static load conditions. The systems
provided by MASTER consist of specially designed fasteners,
installation tools, and powder loads which are designed to
function in combination to provide optimum performance.
While powder actuated tools can provide one of the fastest
and economical means of fastening, they can also be
dangerous if they are not operated properly.
Prior to operating the DG307 tool, you must be properly
trained in the operation and maintenance of this tool and be
issued a MASTER Qualified Operator Card. When using the
tool, you must have this card in your possession. As part
of the training process, you should read and understand
the contents of this instruction manual especially the safety
Low Velocity Powder
Actuated Fastening Tool
DG307
MASTER
! warning
Page 2
DG307
2
precautions.
Powder actuated tools may be operated only by properly
trained operators as described in ANSI Standard A 10.3,
Safety Requirements for Powder Actuated Fastening
Systems. For complete tool operation details, contact your
local MASTER Branch office or distributor for training.
Remember, safety begins with you! It is your primary
responsibility when operating this tool. Failure to follow the
proper operating, maintenance, and safety procedures can
result in serious injury or death to yourself or bystanders.
In addition to the training provided, you should be familiar
with any local, state, and federal regulations. If you have any
questions which are not covered in this manual, contact your
local MASTER Branch office or distributor.
Size Range
1/2” to 3” pin lengths, .22 caliber
Tool Description
The DG307 is a low velocity, single shot, .22 caliber
tool which can be used to install .300 head drive pins,
8mm
head drive pins and 1/4”-20 threaded studs, up to 3” in total
length. The DG307 is designed for maintenance or
residential contractors.
Technical Data
TOOL BODY PIN LENGTH TOOL LENGTH
Engineered Plastic 1/2” to 3” Total Length 12-1/2”
LOAD TYPE TOOL WEIGHT POWER LEVEL
.22 Caliber in 4.3 lbs. Gray (1), Brown (2)
Crimped “A” Load Green (3), Yellow (4)
PIN TYPE
Ballistic Point Drive Pin, .300 Head Drive Pin, 8mm Head Drive Pin,
1/4”-20 Threaded Stud
DG307 Selection Guide
CAT NO. DESCRIPTION STD CTN.
DG307 Tool (Blister Pack) 1
52522 Piston 1
52510 Nose Piece 1
52512 Piston Reset Pin 1
Fastener Functioning
Prior to learning the safe operating
procedures for this tool, it is important
to understand how a powder actuated
fastener works. A powder actuated
fastener is considered to be a direct
drive or forced entry type of fastener
because it is driven directly into the
base material. The driving action causes tremendous forces
to be applied to the fastener. MASTER powder actuated
fasteners are specially designed and manufactured using
an austempering process to withstand the forces imposed
during the driving operation. Only fasteners manufactured or
supplied by MASTER should be used in this tool.
Functioning In Concrete
The performance of a powder actuated fastener when
installed into concrete or masonry base materials is based on
the following factors:
1. Strength of the base material
2. Hardness and concentration of the aggregate
3. Shank diameter of the fastener
4. Depth of embedment into the base material
5. Fastener spacing and edge distance
In addition to these factors, installation
tool accessories such as a stop
spall which reduces the tendency of
the concrete surface to spall during
the driving action can increase the
performance of the fastener.
When a powder actuated fastener
is driven into concrete, it displaces the
volume of concrete around the embedded
area of the fastener shank. As this
occurs, the concrete directly surrounding
the fastener is compressed and in turn
presses back against the shank of the
fastener. Additionally, the driving action
generates heat which causes particles within the concrete
to fuse to the shank of the fastener. This combination of
compression and fusion holds the fastener in the concrete
base material. A similar action occurs when fastening into
block masonry.
Generally, the performance of the fastener in a given
concrete strength will increase with greater embedment
depths in a certain range. Depending on the fastener style
and base material strength, embedment depths range from
5/8” to 1-1/2”. For depths greater than this range, there is
the possibility of fastener bending or fishhooking which may
decrease expected load capacities and create a safety hazard.
During the driving action, some localized surface spalling
of the
concrete may occur. Normally, this is a surface effect which
does not effect the performance of the fastener. However,
it may pose an aesthetic problem for exposed applications
where a fixture is not used. In cases such as this, two
methods can be used to improve the appearance of the
fastening. A stop spall adapter mounted on the powder
actuated tool can help to reduce surface spalling. Another
method used is to drive the fastener through a steel washer
to improve the appearance of the application.
Functioning In Steel
The load performance of a powder
actuated fastener when installed into
steel base materials is based on the
following factors:
1. Thickness of the steel
2. Tensile strength of the steel
3. Shank diameter of the fastener
4. Depth of point penetration through the steel
5. Fastener spacing and edge distance.
When a powder actuated fastener is driven into steel, it
displaces the steel laterally 360˚ around the shank of the
fastener. Since steel is an elastic material, it presses back
against the shank of the fastener to hold it in place. As the
diameter of the fastener shank is increased, the load capacity
obtained will generally increase provided the steel thickness
is sufficient to accept the fastener. To further increase
fastener performance in steel, some fasteners have a knurled
shank which allows the steel to form a key lock into the
grooves to provide higher capacities than those obtained with
a smooth shank. For optimum performance, the fastener
point should completely penetrate the steel. Normally, a
minimum of 1/4” is allowed for the point length. An increase
in performance can be expected until the fastener no longer
completely penetrates through the steel. At this point, the
elastic properties of the steel cause a compression force to
be developed at an angle against the fastener point which
Stop
Spall
Washer
Stop
Spall
1
2
Model DG307
MASTER
Page 3
DG307
3
reduces load capacity. In thicker steel base materials,
adequate load capacities may be obtained for applications in
which the point of the fastener does not fully penetrate the
steel.
Job site performance tests are recommended.
Fasteners should not be used in areas that have been
welded or cut with a torch as these procedures may have
caused local hardening of the steel. Over driving of the fastener should be avoided as the rebound created may reduce
the load capacity or cause damage to the fastener. When
fastening into unsupported long steel members, it may be
necessary to provide support in the area of the fastening to
prevent spring action which can cause inconsistent penetration and a reduction in load capacity.
Suitable Base Material
While powder actuated fasteners can be used successfully in
concrete, certain masonry materials, and A 36 steel, some
materials are completely unsuitable. Fasteners should never
be fired into hard or brittle materials such as cast iron, tile,
glass, or rock. These materials can shatter easily resulting in
a potential safety hazard. In addition, soft base materials
Surface
Shatters
Material
Cracks
Fastener Sinks in
with Average
Hammer Blow
Point
Flattens
No
Indent
such as wallboard, plaster, or wood are
not appropriate as the fastener could
pass completely through these
materials. The user should never guess
when fastening into any base material.
Failure to follow the recommended
installation and safety guidelines can
result in severe injury or death to the
tool operator and/or bystanders.
Center Punch Test
A center punch test should always be
performed to determine the suitability
of the base material for a powder
actuated fastening. This test is relatively
simple and can help to insure a safe,
successful fastening.
Be sure to wear
the appropriate eye protection when
performing this test. To begin, select
the fastener to be used for the job.
Then, place the point of the fastener
against the proposed base material.
Strike the fastener with a single
hammer blow, then examine the point.
If the point of the fastener is not blunted and the base
material has a clear point indentation, it is acceptable to
proceed with the first test installation.
Use of a powder actuated system is not recommended if
the following occurs during the center punch test:
1. The fastener point has been blunted. This indicates that the
base material is too hard.
2. The base material cracks or shatters. This indicates that
the base material is too brittle.
3. When using an average hammer blow, the fastener
penetrates the base material easily. This indicates that the
base material is too soft.
Fastener Installation Requirements
It is important to understand the required minimum base
material thickness requirements along with the minimum
spacing and edge distance requirements. Failure to follow
these requirements can result in an unsuccessful fastening
and create a safety hazard.
Base Material Thickness
Concrete base material should be at
least three (3) times as thick as the
fastener embedment penetration. If the
concrete is too thin, the compressive
forces forming at the fasteners point can
cause the free face of the concrete to
break away. This can create a dangerous
condition from flying concrete and/
or the fastener and also results in a reduction of fastener
holding power.
For applications in the face shell of concrete
masonry block, select a fastener length which will not
exceed the thickness of the face shell.
Fastener Penetration Guide
The following table lists typical embedment or penetration
depths expected in the base materials listed. The
penetration will vary depending on the density of the
material. This table should be used as a guide since the
consistency of these materials varies. When in doubt, a job
site performance test should be conducted.
DENSITY TYPICAL BASE MATERIAL PENETRATION
Soft Masonry Concrete block 1” -1-1/4”
Average Concrete Poured concrete 3/4” - 1”
Dense Concrete Pre-stressed/ 5/8” - 3/4”
pre-cast concrete
Edge Distance
3"
3"
Do not fasten closer than 3” from
the edge of concrete. If the concrete
cracks, the fastener may not hold.
Closer edge distances for applications
such as sill plates may be permitted
if specific fastener testing has been
conducted.
Spacing
Setting fasteners too close together
in concrete or masonry can cause
cracking. The recommended minimum
distance between fasteners is 3” center to center.
Fastener Length Selection In Concrete
For permanent applications using pins in concrete, first
determine the thickness of the fixture to be fastened. To this,
add the required embedment or penetration into the base
material. This will be the fastener shank length required.
For applications in the face shell of masonry block, select a
fastener length which will not exceed the thickness of the
face shell.
For removable applications with threaded studs, the
shank length required is equal to the embedment depth
required. To determine the minimum threaded length, add
the thickness of the fixture and the nut / washer thickness.
The nut and washer thickness is equal to the nominal thread
diameter. Do not over tighten threaded
parts. Maximum tightening torque
values are listed in the table below.
Use of a nut setter is recommended to
reduce the possibility of over tightening
the fasteners. For critical applications,
perform a job site test.
MAXIMUM TORQUE FOR 1/4” STUD MAXIMUM TORQUE FOR 3/8” STUD
(
FT.-LBS.) (FT.-LBS)
2 4
2
3
1
Penetration
3x
Penetration
Fixture
Embedment
Model DG307
MASTER
Page 4
DG307
4
Installation In Steel
The following guidelines are based on the installation of a
fastener in ASTM A 36 structural steel with the point fully
penetrating the steel member. Recommended steel material
thickness ranges from a minimum of 1/8” to a maximum of
3/8”. For use in higher strength structural steel, applications
where the point does not penetrate the steel member, or a
thickness of steel greater than 3/8”, job site performance
tests are recommended.
Base Material Thickness
Steel base materials should be a
minimum of 1/8” in thickness.
Edge Distance
For installations in A 36 steel, 1/2”
is the recommended minimum edge
distance.
Spacing
The recommended minimum distance
between fastenings is 1-1/2” center
to center for installations in ASTM A
36 steel.
Fastener Length Selection In Steel
For permanent applications when using pins in steel, first
determine the thickness of the fixture to be fastened. To this,
add the thickness of the steel base material plus a minimum
of 1/4” to allow for proper point penetration. This will be the
minimum fastener shank length required. Do not select a
fastener length longer than that required for the application.
An excessively long shank can burnish or polish the hole
created in the steel resulting in a reduction in load capacity.
For removable applications with threaded studs, the
shank length required is equal to the thickness of the steel
base material plus a minimum of 1/4” to allow for proper
point penetration. This will be the minimum fastener shank
length required. Do not select a shank length longer than
that required for the application. An excessively long shank
can burnish or polish the hole created in the steel resulting
in a reduction in load capacity. To determine the minimum
threaded length, add the thickness of the fixture and the nut
/ washer thickness. The nut and washer thickness is equal to
the nominal thread diameter.
Do not over tighten threaded studs, the maximum
tightening torque is listed in the table below. Use of a nut
setter is recommended to reduce the possibility of over
tightening the fasteners. For critical applications, perform a
job site test.
Fastener Selection Guide
.300 Head Diameter Drive Pins
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PD3011000
1/2” K 100 5000 .300 .143 .5
PD3011050
5/8” K 100 5000 .300 .143 .5
PD3001100
3/4” 100 5000 .300 .143 .5
PD3001150
1” 100 5000 .300 .143 .6
PD3001200
1-1/8” 100 1000 .300 .143 .7
PD3001250
1-1/4” 100 1000 .300 .143 .8
PD3001300
1-1/2” 100 1000 .300 .143 .9
PD3001350
1-3/4” 100 1000 .300 .143 1.1
PD3001400
2” 100 1000 .300 .143 1.2
PD3001450
2-1/4” 100 1000 .300 .143 1.2
PD3001500
2-3/8” 100 1000 .300 .143 1.3
PD3001550
2-1/2” 100 1000 .300 .143 1.4
PD3001600
2-3/4” 100 1000 .300 .143 1.6
PD3001650
3” 100 1000 .300 .143 1.9
.300 Head Diameter Drive Pins with Top Hat
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PDT3031000
1/2” K 100 5000 .300 .143 .5
PDT3031050
5/8” K 100 5000 .300 .143 .5
PDT3031100
3/4” 100 5000 .300 .143 .5
PDT3031150
1” 100 5000 .300 .143 .6
.300 Head Diameter Step Shank Pins
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
SPD3041000
3/4” Step Shank 100 1000 .300 .143/130 .5
SPD3041050
1” Step Shank 100 1000 .300 .143/130 .6
.300 Head Diameter Drive Pins - Master Pack
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PD301100M
1/2” K 1000 5000 .300 .143 .5
PD301105M
5/8” K 1000 5000 .300 .143 .5
PD300110M
3/4” 1000 5000 .300 .143 .5
PD300115M
1” 1000 5000 .300 .143 .6
PD300125M
1-1/4” 1000 5000 .300 .143 .8
PD303100M
1/2” K TH 1000 5000 .300 .143 .5
PD303105M
5/8” K TH 1000 5000 .300 .143 .5
PD303110M
3/4” TH 1000 5000 .300 .143 .5
PD303115M
1” TH 1000 5000 .300 .143 .6
.300 Head Diameter Drive Pins with 3/4” Washer
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PDW3051100
3/4” 100 1000 .300 .143 1.6
PDW3051200
2-1/2” 100 1000 .300 .143 2.5
.300 Head Diameter Drive Pins with 7/8” Washer
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PDW3061150
1” 100 1000 .300 .143 1.9
PDW3061250
1-1/4” 100 1000 .300 .143 2.0
PDW3061300
1-1/2” 100 1000 .300 .143 2.1
PDW3061400
2” 100 1000 .300 .143 2.4
PDW3061550
2-1/2” 100 1000 .300 .143 2.7
PDW3061650
3” 100 1000 .300 .143 3.0
.300 Head Diameter Drive Pins with 1” Washer
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PDW3071000
1-1/4” 100 1000 .300 .143 2.2
PDW3071050
1-1/2” 100 1000 .300 .143 2.3
PDW3071250
2” 100 1000 .300 .143 2.6
PDW3071150
2-1/2” 100 1000 .300 .143 2.9
PDW3071200
3” 100 1000 .300 .143 3.2
1/8"
1/2"
1-1/2"
Model DG307
MASTER
Page 5
DG307
5
.300 Head Diameter Drive Pins with 1-7/8” Insulation Washer
CAT. SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH BOX CTN. DIA. DIA. 100
PD3081000
1-1/2” 100 1000 .300 .143 2.1
PD3081050
2-1/2” 50 500 .300 .143 2.7
1/4”-20 Threaded Studs
CAT. THREAD SHANK STD. STD. HEAD SHANK WT./
NO. LENGTH LENGTH BOX CTN. DIA. DIA. 100
TS3811020
1/2” 1/2”K 100 5000 1/4” .143 .8
TS3811000
3/4” 1/2”K 100 1000 1/4” .143 1.1
TS3811050
3/4” 3/4” 100 1000 1/4” .143 1.2
TS3811100
1/2” 1” 100 1000 1/4” .143 1.2
TS3811150
3/4” 1” 100 1000 1/4” .143 1.4
TS3811180
1/2” 1-1/4” 100 1000 1/4” .143 1.4
TS3811200
3/4” 1-1/4” 100 1000 1/4” .143 1.5
TS3811250
1-1/4” 1-1/4” 100 1000 1/4” .143 1.7
.300 Head Diameter Pins with Ceiling Clips
CAT. SHANK STD. STD. HEAD SHANK WIRE WT./
NO. LENGTH BOX CTN. DIA. DIA. HOLE 100
PDCA4111050
1” 100 1000 .300 .143 0.278” 3.5
PDCA4151000
1” 100 1000 .300 .143 0.278” 3.0
PDCA4111100
1-1/4” 100 1000 .300 .143 0.278” 3.7
PDCA111150
1-1/4” 100 1000 .300 .143 0.278” 3.2
.300 Head Diameter Drive Pins with
BX Cable Straps and Conduit Clips
CAT. STD. STD. HEAD SHANK WT./
NO. SHANK LENGTH BOX CTN. DIA. DIA. 100
PDCC4111150
1” 100 1000 .300 .143 3.5
P
DCC4131050
1-1/4” 100 1000 .300 .143 3.7
PDCC4121000
1/2” EMT 1” pin 100 1000 .300 .143 3.3
PDCC4121050 3/4” EMT 1-1/4”pin
100 1000 .300 .143 3.5
PDCC4121100
3/4” EMT 1” pin TH
100 500 .300 .143 3.4
PDCC4121150
3/4” EMT 1” pin 100 1000 .300 .143 3.3
PDCC4121200 1” EMT 1” pin TH
25 250 .300 143 3.2
K=Knurled TH=Top Hat
Powder Load Selection Guide
POWER LOAD STD. STD. MASTER WT./
LEVEL COLOR SIZE BOX CTN. CTN. 100
1 Grey .22A 100 1000 20000 .33
2 Brown .22A 100 1000 20000 .33
3 Green .22A 100 1000 20000 .33
4 Yellow .22A 100 1000 20000 .33 fety
InstructIons
afety InstructIons
Safety is your primary responsibility when operating
any powder actuated tool. You must read and understand
the contents of this manual. You must be familiar with all
functional and safety requirements of the tool. It is your
responsibility to obtain proper training and a MASTER operator
card prior to using this tool in compliance with the current
American National Standard A10.3 Safety Requirements
for Powder Actuated Fastening Systems and the Federal
Occupational Safety and Health Administration Standards
(OSHA). Existing state or local regulations should also be
followed. When using this tool, you must have the qualified
operators card in your possession.
Revocation of card - Failure to comply with any of the rules and
regulations for safe operation of powder actuated tools shall be
cause for the immediate revocation of your qualified operator card.
Failure to following safety instructions
can result in serious injury or death to operators or
bystanders.
Prior to Operating the Tool
1. Warning signs should always be posted within the area in
which a powder actuated tool is to be used. These signs
should be at least 8” x 10” in size with boldface type that
is not less than 1” in height. The sign should state
“Powder Actuated Tool In Use”.
2. Approved eye protection should always be worn by operator or bystander, to protect their eyes from flying particles.
Hearing protection should always be worn by the operator
and bystanders when using a powder actuated tool. Other
personal safety protection as required should also be used.
3. Never modify or fabricate parts for use in your MASTER
tool. Use only MASTER fasteners, loads, and tool parts.
4. Hands or other body parts must never be placed in front
of muzzle/barrel. Accidental discharge can cause piston
and/or fastener to pass through the operator’s hand.
5. Never compress the tool against any part of the body.
Serious injury or death may result in the event of an
accidental discharge.
6. Always point tool in a safe direction at all times.
Intended Purpose
7. Keep all other people, especially children, away from the
work area.
8. Use only in a well-lit, well-ventilated work area.
Preparation for Loading the Tool
1. Tools must be checked prior to operating to make sure
they are not fully or partially loaded with a powder load or
fastener.
2. To insure safe operation, perform the daily function test
described in this manual. Be sure the tool is not loaded
prior to performing this test.
3. Do not operate this tool unless all its parts are in place
and operating appropriately. Never attempt to use a
malfunctioning tool.
4. Never guess about the suitability of a base material. If
you are uncertain about the suitability of a base material,
perform a center punch test.
5. Do not operate the tool until you learn and understand the
color code / numbering system used to identify the power
level of powder loads.
Operating the Tool
1. Only use fasteners and powder loads designed for this
tool as supplied by MASTER.
2. Do not use powder actuated tools in the presence of
flammable fumes or vapor or an explosive atmosphere.
3. Do not fire a tool without a fastener. The piston will
Model DG307
MASTER
SAFETY INSTRUCTIONS
Page 6
DG307
6
impact the work surface possibly causing serious injury to
the operator or bystanders along with damage to the tool.
4. Do not load the tool until you are ready to make a
fastening. Check the power load level before inserting it into
the tool chamber.
5. Fastener must be loaded prior to loading the powder load,
to prevent injury to operator or bystander in the event of
an accidental discharge.
6. Do not close tool against work surface. The tool should be
manually closed, with hand away from muzzle/barrel to
prevent accidental discharge.
7. Hold the tool perpendicular to the work surface at all
times. Use a spall guard (part # 52166) wherever possible.
This will limit the possibility of fastener ricochet which
could cause serious injury or death to the operator or
bystanders.
8. Always perform a test fastening with the lightest load level
designed for use in the tool. If the lightest load fails to set
the fastener, try the next highest load until the proper level
is attained. Failure to follow this procedure may cause the
fastener to be overpowered. If this occurs, the fastener
may fully penetrate the base material causing serious
injury or death to someone. Overpowering the fastener can
also damage the tool, creating a safety hazard to both the
operator or bystanders.
9. Do not fasten into cast iron, tile, glass, or other types of
brittle materials. These materials can shatter and create
sharp fragments which may cause injury.
10.Do not fire tool within 3” (three inches) of the edge of a
concrete base material or within 1/2” (one-half inch) of
the edge of a steel base material.
11.Do not attempt to install a fastener closer than 3” (three
inches) to another previously inserted fastener in concrete
or 1-1/2” (one and one-half inch) in steel.
12.Do not fasten into a concrete base material less than 3
times as thick as the fastener penetration or into a steel
base material thinner than 1/8”.
13.Never attempt to install a fastener in a cracked or spalled
area in concrete. Place fastener at least 3” (three inches)
away from a spalled area to prevent the possibility of the
fastener bending and striking an operator or bystander.
14.Do not attempt to install fasteners in areas that have been
welded or cut with a torch as these procedures may have
caused local hardening of the steel.
15.Do not fasten through a pre-drilled hole unless proper
guidance is provided.
16.If you decide not to make a fastening after the tool has
been loaded, you must always remove the powder load first
followed by the fastener.
17. Never attempt to override the safety features of this tool.
18.Stay Alert, watch what you are doing, and use common
sense. Do not use tool when you are tired or under the
influence of drugs or alcohol.
19.Maintain proper footing and balance. Do not over reach.
20.Check that no one is present directly behind or below the
work surface.
Handling the Tool And Powder Loads
1. Never leave a loaded tool unattended. Once the tool is
loaded, make the fastening immediately or unload the tool.
2. Always unload the tool before work breaks, changing parts,
cleaning or servicing, and when storing.
3. To prevent accidental discharge of loads, never carry the
powder loads in the same container as the fasteners or
other hard objects.
4. Always store the powder loads in the containers provided
or in an enclosure provided for them. Never intermix the
various power levels. Keep them segregated in clearly
identified containers.
5.
Powder loads should never be used in firearms. They are normally
more powerful that the cartridges supplied with the firearms.
6.
Powder actuated tools and powder loads should always be stored
under lock and key. Tools must be unloaded when not in use.
Tool Malfunction
1. In the event that a load fails to discharge after the trigger
is pulled, the tool must be kept depressed against the
work surface for a minimum of 30 (thirty) seconds in case
of a delayed load discharge. Then carefully remove the
entire load strip. and dispose of it in a can of water or
other nonflammable liquid. Never attempt to force or pry a
load out of a tool chamber.
2. Never discard unfired powder loads into a trash container.
3. Do not attempt to unload or disassemble a jammed,
stuck or broken tool as improper handling may cause
it to discharge and strike operator and/or bystander. A
jammed tool must be pointed in a safe direction at all
times. Tag the tool and lock it up. Call your MASTER
representative for proper assistance.
Tool Operation
Be sure to read and understand all of
the safety precautions and training in this manual before
attempting to operate the tool. (Check to be sure the tool is
not loaded, the piston moves freely within the barrel, and no
foreign objects or fasteners are in the barrel.) Perform the
daily function test before using the tool.
Operation
R2200
1. Always point the tool in a safe
direction away from bystanders
and the operator. Slide the barrel
forward. This can be done by
snapping your wrist. The barrel should be pulled fully
forward to reset the piston for the next fastening. Loss of
power may result from an im properly positioned piston.
2. Always load the fastener before inserting powder load to
prevent injury to the operator or bystanders in the event of
an accidental discharge. Place the fastener, point out, into
the end of the nose piece until the fluted tip fits inside.
Do not use excessive force when inserting the fastener. If
excessive force is required, stop and determine why the
fastener can not be inserted. Correct the problem before
proceeding.
Do not use fasteners longer than 3” as
listed in the fastener selection section of this manual.
3. Make sure the breech is clear. Insert
the powder load starting with the
lowest power level. If this Load does
not fully set the fastener, try the next
higher power level until the proper
level is found.
Over driving or over powering a fastener can
cause a safety hazard.
4. Pull the barrel all the way back to
close the tool. Do not attempt to
close the tool by exerting force on
the front of the nose piece. Never
place your fingers or hands over
muzzle bushing. The safe position for hands and fingers
Model DG307
MASTER
Page 7
DG307
7
are as shown in the diagram. Hands must never be
placed in front of the tool muzzle or nose piece. In the
event of an accidental discharge, the piston and/or
fastener can pass through the operators hand.
5. Once the tool is in the closed
position, place it against the work
surface. Hold the tool firmly with
two hands and completely depress
the barrel. Then squeeze the
trigger. Always hold the tool perpendicular to the work
surface. Hold the tool firmly against the work surface to
avoid excessive recoil. Never depress the tool against
anything except the work surface.
In the event that the load does not discharge
after the trigger is pulled, continue to hold the tool depressed
against the work surface for at least 30 (thirty) seconds in
case of a delayed load discharge. Then carefully remove the
entire load strip and dispose of it in a can of water or other
non flammable liquid. Never attempt to force or pry a load
out of a tool chamber. Do not discard unfired loads into a
trash container.
6. To prepare for the next fastening, point the tool in a safe
direction. Snap the barrel forward as described in step 1.
This action will eject the spent powder load and properly
reset the piston. Always insert a new fastener before
loading powder load in the chamber. Do not attempt to
unload or disassemble a jammed, stuck or broken tool
as improper handling may cause it to discharge and
strike operator and/or bystander. A jammed tool must be
pointed in a safe direction at all times. Tag the tool and
lock it up. Call your MASTER representative for proper
assistance.
Maintenance & Cleaning
MAKE SURE THE TOOL IS NOT LOADED.
BE SURE THE TOOL IS NOT HOT PRIOR TO ATTEMPTING
DISASSEMBLY OR CLEANING.
Daily Function Test
Check the functioning of the tool, without a powder load
or fastener in the tool, by pushing down against the work
surface, pulling the trigger, and releasing the tool from the
work surface. Function the unloaded tool several times and
insure that the breech parts and firing mechanism operate
freely before fastening with the tool.
Your MASTER Authorized representative should be asked to
assist the first time you disassemble and clean your tool.
If you ever have any trouble reassembling the tool, or have
any doubt about worn parts, call your MASTER Authorized
Powder Distributor.
Cleaning
AIl parts should be cleaned with detergent oil and the wire
brushes supplied with your tool kit. Remove heavy dirt buildup with the brush. After cleaning with oil, all parts should be
wiped thoroughly dry. Excess oil will tend to collect dirt and
dust. Wear eye protection when cleaning the tool. The piston
rod, barrel assembly, and receiver should all be cleaned of
excess dirt on a daily basis. Check the condition of the piston
for damage from wear and deformation.
To maintain this tool in good working condition, it is
necessary to disassemble and clean the entire tool if dirt
is evident in the breech face, or if the tool appears to lose
power. All parts should be cleaned with oil and wire brushes.
Remove heavy dirt. All parts should be wiped thoroughly dry
after cleaning with oil.
General tool mainte nance should be performed at six
month intervals or more frequently as required by the
frequency of tool use.
Replacing or Repairing the Piston
The piston is an expendable part and must be replaced
periodically. Typical signs of a worn out piston are: breaking,
bending or mushrooming. Prior to
servicing the tool make sure there is no
powder load in the tool. Use caution and
do not lose or damage any tool parts.
1.
Loosen the cap on the reset pin by
turning it counter clockwise. Remove the
reset pin cap.
2.
Hold the barrel in place, then remove
the reset pin spring and reset pin.
3. Slide the barrel from the receiver by
pulling it forward. If excessive dirt is built
up inside the receiver, clean it with a wire
brush.
4. Unthread the nose piece from the
barrel by turning it counter clockwise.
Pull the piston forward out of the barrel.
If a vise clamp is used
to hold the barrel, protect the bar
rel from
damage.
5. Clean the piston using a wire brush.
Inspect it for worn or damaged piston ring,
chipped end, or bending. Apply lubricant to
the piston shank to minimize piston sticking
from an overdrive con dition. Wipe the piston
dry.
6. If a piston tip is damaged, it can be
shortened a maximum of 0.20 inches.
The tip of the piston should be grooved
flat and at 90 degrees to the shank of
the piston. The cham fer of the piston
must also be reground as shown.
Piston
grinding should be performed by qualified per sonnel using
the proper equipment.
Reassembly:
7. Press the piston into the barrel.
Thread the nose piece into the barrel
and tighten it clockwise until finger tight.
Be sure the nose piece is fully seated.
8. Align the slot in the barrel with the
reset pin opening in the bottom of
the receiver. Insert the barrel into the
receiver. Insert the reset pin, and reset
pin spring. Tighten the reset pin cap
clockwise until it is finger tight and fully seated.
Upon reassembly of the tool perform the following test.
Depress the tool against a flat, hard surface and pull the
trigger. The barrel assembly should slide smoothly inside the
tool receiver. The firing pin should release after the trigger has
been pulled.
THIS TEST SHOULD BE PERFORMED
WITHOUT A PIN OR POWDER LOAD IN THE TOOL.
1
2
3
4
5
10°
0.120"
6
7
8
Model DG307
MASTER
Page 8
DG307
8
Troubleshooting
ALWAYS CHECK INSTRUCTION MANUAL FOR PROPER ASSEMBLY OF PARTS
PROBLEM POSSIBLE CAUSE SOLUTION
Fastener Overdriving Power level too high / Pin too short Use a lower powder load level number or a longer pin
Soft base material Check base material suitability section
Tool does not fire Tool not depressed completely See “Tool does not depress completely” section below
Firing pin damaged Replace damaged part(s)
Tool does not depress completely Damaged firing pin parts, ejector, etc. Parts
assembled improperly
Check the parts for damage or improper assembly
Power reduction or inconsistent
fastener penetra
tion
Barrel is not pulled fully forward when
cycling tool.
Barrel must be pulled out completely to properly reset
the piston
Worn or damaged piston Replace piston or piston ring
Load strip cannot be
inserted into tool
Improper loading Insert strip from the bottom of the tool handle
Wrong caliber strip Use proper strip
Load strip will not advance Worn advance lever guide Replace advance lever guide. This should be performed
by qualified individuals
Load will not fire when
trigger is pulled
Tool is not fully depressed Follow safety procedure for misfired load then attempt to
fully depress tool before pulling trigger
Load will not fire when tool is fully
depressed and trigger is pulled
Load is already fired Cycle tool
Load misfire Follow safety procedure
Broken firing pin Replace firing pin nut. This should be performed by
qualified individuals
Broken or missing Replace firing pin nut. This firing pin nut should be
Tool cannot be opened
or cycled
Lack of proper cleaning Clean tool thoroughly
Damaged or bent piston Remove and replace piston
Broken or damaged parts Tag tool with warning “Defective - Do Not Use” place in
locked container and contact your MASTER Authorized
representative for service
Piston stuck in the forward
position
Piston has been overdriven and is jammed
against piston reset pin
Tap the piston against a hard surface
Chipped or damaged piston Tool not held on work surface squarely.
This allows the piston to slip off the head of
the pin and cause damage to the piston
Machine piston as shown on page 11. Piston regrinding
may be performed only by
qualified individuals
Piston guide will not open easily Bent shear clip Remove and replace shear clip
Excessive build-up of dirt Disassemble and clean tool
Piston stop is damaged Replace piston stop
Foreign material jammed between the
piston guide and steel liner assembly
Disassemble and remove foreign particles
Piston guide opens too easily Annular ball spring or steel annular ball
have worn
Remove and replace with a new spring and/or ball
#
Model DG307
MASTER
Page 9
DG307
9
☐
Check the correct answer
1 It is necessary to read the Operator’s Manual prior
to operating a MASTER low velocity tool.
☐
True ☐ False
2 When fastening into concrete, the base material
should be greater than the shank penetration by at
least: ☐1 time ☐2 times ☐3 times
3 When operating a powder actuated tool, your hand
should never be placed:
☐
around the tool body
☐
in front of the tool muzzle
☐
over the tool handle
4 To determine the suitability of a base material, use
the fastener as a center punch.
• Ifthefastenerisblunted,donotfasten;thematerial
is too:
☐
soft
☐
hard ☐brittle
• Ifthefastenerpenetrateseasily,donotfasten;the
material is too:
☐
soft ☐hard ☐brittle
• Ifthematerialcracksorshatters,donotfasten;the
material is too:
☐
soft ☐hard ☐brittle
5 Unsafe applications for powder actuated tools may
be caused by which of the following?
☐a soft base material
☐improper powder load
☐fastening too close to an unsupported edge
☐a malfunctioning tool
☐fastening into a spalled area
☐
fastening through a pre-existing hole
☐all of the above
6 Which one of the following building materials is not
suitable as a receiving material (base material) for
powder actuated fasteners?
☐
sheet rock ☐ wood ☐fiberglass
☐
sheet metal ☐all of the above
7 When considering the safety of a particular
application, the operator must think about:
☐
the base material
☐
the powder load power level
☐
the operator’s safety
☐
the safety of bystanders and fellow workers
☐
all of the above
8
The proper loading procedure is: insert fastener first,
powder load second. The fastener should always be
placed in the tool prior to the load.
☐
True ☐False
9
Which one of the following materials is usually
suitable for powder actuated fastenings?
☐
poured concrete ☐hollow tile
☐
surface hardened steel ☐glazed brick
10
In concrete, a fastener should be driven no closer to
an unsupported edge than:
☐
1/2” ☐1-1/2” ☐3”
11
Fishhooking is a condition which can occur when
a powder actuated fastener strikes a piece of hard
aggregate or very hard concrete, bends and comes
out of the work surface. A fishhook can cause a
serious injury or death.
☐
True ☐False
12
Placing a hand over the muzzle bushing of a
loaded tool can result in serious injury from piston
overdrive or an escaping fastener if the tool is
discharged accidentally.
☐
True ☐False
13
Piston overdrive is caused by overpowering of
the tool or by discharging the tool against a soft
surface.
☐
True ☐False
14 Malfunctioning tools cannot be used and must be
removed from service immediately.
☐
True ☐False
15 After conducting a Center Punch Test,the best
way to check the base material is to set several
fasteners using the least powerful load.
☐
True ☐False False
16 Eye protection and hearing protection should not be
worn by the operator and any necessary bystanders
when using the tool.
☐
True ☐False
17 A powder actuated tool cannot be safely used in an
explosive or flammable atmosphere.
☐
True ☐False
18 List the proper powder load level number
(1-6) next to each color listed.
Red ___ Brown ___ Green ___
Yellow ___ Gray ___ Purple ___
19 The weakest power level should be used when
making the first fastening.
☐
True ☐False
20 You can fasten into welded areas of steel.
☐
True ☐False
DG307
• Theproperprocedureifapowderloadfailstoignite
is to hold the tool against the work surface and wait
30 seconds, then proceed exactly as directed in the
Operator’s Manual.
☐
True ☐False
• MASTER powder loads for the P2100 are .22
caliber, “A” tapered, neck down, rim fire, short
crimped cartridges. No other powder load may be
used in this tool. ☐True ☐False
• Operators should never compress the DG307 or
any other powder actuated tool against any part of
their body. ☐True ☐False
• IfapistonbufferfortheDG307 becomesdeformed,
simply remove it, and use the tool without the
buffer? ☐True ☐False
OPERATOR’S NAME
HOME ADDRESS
AGE DATE OF BIRTH
COMPANY NAME
COMPANY ADDRESS
COMPANY PHONE
SIGNATURE DATE
Qualified Tool operaTor examinaTion
LICENSE AND WARRANTY ACTIVATION
THE DG307 TOOL IS WARRANTED FOR 3 YEARS FROM DATE OF PURCHASE ON MANUFACTURERS DEFECTS.
I certify that I have read and understand the DG307 Tool Operating Instruction Manual and have taken the Operator’s exam. I understand the
importance of following all safety procedures and that failure to read, comprehend, and follow the detailed rules and warnings regarding the
safe operation of powder actuated tools can result in serious injury or death to the tool operator or bystanders. I agree to conform to all the
rules and regulations regarding the use of powder actuated tools. (Please print clearly)
THE SERIAL NUMBER ON MY TOOL IS:
PLEASE SEND MY TOOL LICENSE TO:
NAME
ADDRESS
CITY STATE ZIP PHONE
MAIL TO:
3
TRIM ALONG DOTTED LINE, PLACE IN ENVELOPE, ADDRESS AS SHOWN AND AFFIX POSTAGE
#
Model DG307
MASTER
Loading...