Power Fist 8988404 User manual
V4.0 8988404
Please read and understand all instructions before use. Retain this manual for
future reference.
ELECTRIC
IMPACT WRENCH
8988404 1/2 in. dr Electric Impact Wrench V4.0
2 For technical questions call 1-800-665-8685
SPECIFICATIONS
Drive Size (in.) 1/2
Voltage Rating (V AC) 110
Amperage Rating (A) 8.5
Torque Rating (ft-lb) 260
Blows per Minute (BPM) 5,000
No Load Speed (RPM) 2,500
Handle Type PVC
Reversing Yes
Tool Length (in.) 12.2L x 3.1W x 11.4H
Weight (lb) 6.5
HAZARD DEFINITIONS
Please familiarize yourself with the hazard notices found in this manual. A
notice is an alert that there is a possibility of property damage, injury or death
if certain instructions are not followed.
DANGER! This notice indicates an immediate and specific hazard that will
result in severe personal injury or death if the proper
precautions are not taken.
WARNING! This notice indicates a specific hazard or unsafe practice that
could result in severe personal injury or death if the proper
precautions are not taken.
CAUTION! This notice indicates a potentially hazardous situation that may
result in minor or moderate injury if proper practices are
not taken.
NOTICE! This notice indicates that a specific hazard or unsafe practice will
result in equipment or property damage, but not personal injury.
V4.0 1/2 in. dr Electric Impact Wrench 8988404
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INTRODUCTION
The Electric Impact Wrench is used to quickly tighten and loosen large nuts,
bolts and other fasteners. It has a rocker-type trigger that can switch between
forward (clockwise) and reverse (counterclockwise) rotation.
SAFETY
WARNING! Read and understand all instructions before using this tool. The
operator must follow basic precautions to reduce the risk of personal injury
and/or damage to the equipment.
Keep this manual for safety warnings, precautions, operating or inspection and
maintenance instructions.
WORK AREA
1. Operate in a safe work environment. Keep your work area clean, well-lit
and free of distractions. Place lights so you are not working in a shadow.
2. Keep anyone not wearing the appropriate safety equipment away from the
work area.
3. Store unused tools properly in a safe and dry location to prevent rust or
damage. Lock tools away and keep out of the reach of children.
4. Do not install or use in the presence of flammable gases, dust or liquids.
PERSONAL SAFETY
WARNING! Wear personal protective equipment approved by the Canadian
Standards Association (CSA) or American National Standards Institute (ANSI).
PERSONAL PROTECTIVE EQUIPMENT
1. Always wear impact safety goggles that provide front and side protection
for the eyes. Eye protection equipment should comply with CSA Z94.3-07
or ANSI Z87.1 standards based on the type of work performed.
2. Wear gloves that provide protection based on the work materials or to
reduce the effects of tool vibration.
3. Wear protective clothing designed for the work environment and tool.
4. Non-skid footwear is recommended to maintain footing and balance in the
work environment.
8988404 1/2 in. dr Electric Impact Wrench V4.0
4 For technical questions call 1-800-665-8685
PERSONAL PRECAUTIONS
Control the tool, personal movement and the work environment to avoid
personal injury or damage to tool.
1. Do not operate any tool when tired or under the influence of drugs,
alcohol or medications.
2. Avoid wearing clothes or jewelry that can become entangled with the
moving parts of a tool. Keep long hair covered or bound.
3. Do not overreach when operating a tool. Proper footing and balance
enables better control in unexpected situations.
4. Securely hold this tool using both hands. Using a tool with only one hand
can result in loss of control.
ELECTRICAL SAFETY
WARNING! Do not touch or handle a live tool with any part of your body that is
wet or damp. Wet skin reduces resistance to electrical current, increasing the
danger of a serious or fatal shock.
WARNING! To reduce risk of electric shock, be certain that the plug is connected
to a properly grounded receptacle.
1. Disconnect the tool from the power supply before making any
adjustments, changing accessories, cleaning, servicing or when storing.
Such preventive safety measures reduce the risk of starting the
tool accidentally.
2. Protect yourself against electric shocks when working on electrical
equipment. Avoid body contact with grounded surfaces. There is an
increased chance of electrical shock if your body is grounded.
a. Hold the tool by the insulated gripping surfaces when performing an
operation where it may contact hidden wiring or its own cord.
Contact with a ‘live’ wire will electrify exposed metal parts and shock
the operator.
3. Do not expose the tool to rain, snow, frost or any other damp or wet
conditions. Water entering a tool will increase the risk of electric shock.
4. Do not disconnect the power cord in place of using the power switch. This
will prevent an accidental start-up when the power cord is plugged into
the power supply.
a. In the event of a power failure, unplug the machine as soon as the
power is interrupted. The possibility of accidental injury could occur
if the power returns.
V4.0 1/2 in. dr Electric Impact Wrench 8988404
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5. Do not alter any parts of the tool or accessories. All parts and accessories
are designed with built-in safety features that may be compromised
if altered.
6. Make certain the power source conforms to requirements of your
equipment (see Specifications).
7. When wiring an electrically driven tool, follow all electrical and safety
codes, as well as the most recent Canadian Electrical Code (CE) and
Canadian Centre for Occupational Health and Safety (CCOHS).
8. This tool is only for use on 120 V (single phase) and is equipped with a
three-prong grounded power supply cord and plug. Check with a qualified
electrician if you are in doubt as to whether the outlet is properly
grounded. If the tool should electronically malfunction or break down,
grounding provides a low resistance path to carry electricity away from
the user.
a. Never remove the grounding prong or modify the plug in any way, as
this will render the tool unsafe.
b. Do not use any adapter plugs.
WARNING! All wiring should be performed by a qualified electrician.
POWER CORD
1. Insert the power cord plug directly to the power supply whenever
possible. Use extension cords or surge protectors only when the tool's
power cord cannot reach a power supply from the work area.
a. When operating a tool outside, use an outdoor extension cord
marked W-A or W. These cords are rated for outdoor use and reduce
the risk of electric shock.
2. Do not operate this tool if the power cord is frayed, damaged or poorly
spliced, as an electric shock may occur, resulting in personal injury or
property damage.
a. Inspect the tool's power cord for cracks, fraying or other faults in the
insulation or plug before each use.
b. Discontinue use if a power cord feels more than comfortably warm
while operating the tool.
3. Keep all connections dry and off the ground to reduce the risk of electric
shock. Do not touch the plug with wet hands.
4. Prevent damage to the power cord by observing the following:
a. Do not pull on the cord to disconnect the plug from an outlet.
8988404 1/2 in. dr Electric Impact Wrench V4.0
6 For technical questions call 1-800-665-8685
b. Keep the cord away from heat, oil, sharp edges or moving parts.
c. Never use the cord to carry the tool.
d. Place the electrical cord in a position that prevents it from coming
into contact with the tool and getting caught by the workpiece. The
cord should always stay behind the tool.
5. Do not allow people, mobile equipment or vehicles to pass over
unprotected power cords.
a. Position power cords away from traffic areas.
b. Place cords in reinforced conduits or place planks on either side of
the power cord to create a protective trench.
POWER TOOL PRECAUTIONS
Tool accessory is a general term that refers to drill bit, saw or cutting blades,
grinding wheel, etc. as appropriate for the tool.
1. Do not use any power tool with a malfunctioning power switch or control.
A power tool that fails to respond to the controls is dangerous and can
cause an injury. A qualified technician must repair and verify the power
tool is operating correctly, before it can be used.
2. Ensure the power supply matches the tool’s motor voltage
(see Specifications).
3. Do not cover the air vents. Proper cooling is necessary prevent damage to
the tool’s motor.
4. Avoid unintentional starts. Ensure the switch is off when connecting to
the power source.
5. Disconnect the power source before installing or servicing the tool.
6. Never point the tool towards yourself. It could inflict an injury.
7. Never force the tool. Excessive pressure could break the tool, resulting in
damage to your workpiece or serious personal injury. Excessive pressure
is the cause if your tool runs smoothly under no load, but roughly
under load.
8. Keep hands and fingers away from the work area. Any part of the body
contacting the tool’s working parts could result in an injury.
9. Only use accessories that are specifically designed for use with the tool.
Ensure the accessory is tightly installed.
10. Only use an accessory that exceeds the Speed Rating (see Specifications).
V4.0 1/2 in. dr Electric Impact Wrench 8988404
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11. Before using the tool on a workpiece, test the tool by running it at the
highest Speed Rating for at least 30 seconds in a safe position. Stop
immediately if there is any abnormal vibration or wobbling. Check the tool
to determine the cause.
a. Do not allow the tool to run without load for an extended period of
time, as this will shorten its life.
12. Never touch the tool accessory or workpiece during or immediately after use.
They may be hot and could inflict a burn injury.
13. Take work breaks to prevent the tool's motor from overheating and/or
overloading.
14. Never use a tool with a cracked or worn tool accessory. Change the tool
accessory before using it.
VIBRATION PRECAUTIONS
1. This tool vibrates during use. Repeated or long-term exposure to vibration
may cause temporary or permanent physical injury. Take frequent breaks
when using the tool.
2. If you feel any medical symptoms related to vibrations (such as tingling,
numbness, and white or blue fingers), seek medical attention as soon
as possible.
3. Wear suitable gloves to reduce the effects of vibration.
4. DO NOT use this tool before consulting a physician if one of the
following applies:
a. Pregnant
b. Impaired blood circulation to
the hands
c. Past hand injuries
d. Nervous system disorders
e. Diabetes
f. Raynaud's Disease
ELECTROMAGNETIC FIELDS
WARNING! Shut off the electrical tool or device and move away if you feel
faint, dizzy, nausea or shocks. Seek medical attention.
Electromagnetic Fields (EMF) can interfere with electronic devices such as
pacemakers. Anyone with a pacemaker should consult with their doctor
before working with or near a tool that generates an EMF. The following
steps can minimize the effects of electromagnetic fields.
1. Keep the power source and any power cables as far away from the
user as practical. A minimum of 24 in. is recommended.
8988404 1/2 in. Electric Impact Wrench V1.0
8 For technical questions call 1-800-665-8685
2. Avoid long and regular bursts of energy while operating the tool. Use
the tool for short or intermittent periods of time. This will prevent a
pacemaker from interpreting the signal as a rapid heartbeat.
3. Alert other people in the work area, so they can take precautions or
can watch out for those with a pacemaker.
SPECIFIC SAFETY PRECAUTIONS
WARNING! DO NOT let comfort or familiarity with product (gained from
repeated use) replace strict adherence to the tool safety rules. If you use
this tool unsafely or incorrectly, you can suffer serious personal injury.
1. Use the correct tool for the job. This tool was designed for a specific
function. Do not modify or alter this tool or use it for an
unintended purpose.
2. Do not use the tool if any parts are damage broken or misplaced.
Repair or replace the parts.
3. Torque required depends on the thread’s condition. When tightening
critical components, check the actual torque applied to the fastener
with a mechanical torque wrench (sold separately).
4. Wait for the tool to fully stop before setting it down. Moving parts can
collide with the surface and lead to loss of control.
5. Maintain a firm grip on the tool with both hands to resist the starting
torque. Keep one hand on the handle and the other on the housing.
6. Do not hold or touch the impact sockets during operation to prevent
personal injury or tool damage.
UNPACKING
WARNING! Do not operate the tool if any part is missing. Replace the
missing part before operating. Failure to do so could result in a malfunction
and personal injury.
Remove the parts and accessories from the packaging and inspect for
damage. Make sure that all items in the Identification Key are included.
V1.0 1/2 in. Electric Impact Wrench 8988404
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IDENTIFICATION KEY
A Anvil
B Forward Trigger
C Reverse Trigger
D Power Cord
E. Carbon Brush Cover
OPERATION
Letter references in parenthesis (A) refer to the included Identification Key.
1. Press the desired socket (sold separately) onto the anvil (A) until it is
seated firmly.
2. Connect the power cord (D) to an electrical outlet.
3. Press the forward trigger (B) to rotate the socket clockwise and the
reverse trigger (C) to rotate the socket counterclockwise. Release the
trigger to stop the rotation.
CARE & MAINTENANCE
1. Maintain the tool with care. A tool in good condition is efficient, easier
to control and will have fewer problems.
2. Inspect the tool components periodically. Repair or replace damaged or
worn components. Only use identical replacement parts
when servicing.
3. Only use accessories intended for use with this tool.
4. Keep the tool handles clean, dry and free from oil/grease at all times.
5. Maintain the tool’s labels and name plates. These carry important
information. If unreadable or missing, contact Princess Auto Ltd.
for replacements.
WARNING! Only qualified service personnel should repair the tool. An
improperly repaired tool may present a hazard to the user and/or others.
CARBON BRUSHES MAINTENANCE
IMPORTANT! Install the brushes in the proper orientation to reduce wear.
IMPORTANT! New brushes may produce sparks during first use until they
wear and conform to the motor’s armature.
8988404 1/2 in. Electric Impact Wrench V1.0
10 For technical questions call 1-800-665-8685
The carbon brushes may require maintenance when performance decreases
or the tool stops working completely.
1. Remove the carbon brush cover (E).
2. Keep track of the orientation of the installed brushes, then remove
them from the housing.
a. If either brush is worn down by more than half, replace both.
b. If the brushes can be reused, rub the dirty surfaces with a pencil
eraser to clean.
3. Install the brushes in the proper orientation. Ensure that the carbon
parts are touching the motor armature. The springs should face away
from the motor and operate freely.
4. Reinstall the covers. Do not overtighten.
CLEANING
Wipe the surface with a clean, dry cloth.
DISPOSAL
Recycle a tool damaged beyond repair at the appropriate facility.
Contact your local municipality for a list of disposal facilities or by-laws for
electronic devices, batteries, oil or other toxic liquids.
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