Universal Tool UT8748-4 Angle Grinder User manual

™
Universal Tool
UT8748-4
4-in. Low Profile
Ext. Angle Grinder
GRINDERS & CUT-OFF TOOLS
General Safety Information & Replacement Parts
TABLE OF CONTENTS
General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Air Compressor and Air Tool Safety. . . . . . . . . . . . . . . . . . . . 2-3
Tool Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maintenance / Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WARNING: Risk of injury to persons. Read and
understand operation instructions. Always become familiar
with all the instructions and warnings before operating any
pneumatic tool.
WARNING: This product contains lead, a chemical known to
the State of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.
WARNING: This product contains chemicals known to
the State of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Safety Information
7.2.2.3 GENERAL SAFETY RULES
• Multiple hazards. Read and understand the safety instructions before
installing, operating, repairing, maintaining, changing accessories on,
or working near the power tool. Failure to do so can result in serious
bodily injury.
• Only qualified and trained operators should install, adjust or use the
power tool.
• Do not modify this power tool. Modifications may reduce the effectiveness of safety measures and increase the risks to the operator.
• Do not discard the safety instructions – give them to the operator.
• Do not use a tool if the tool has been damaged.
• Warnings shall be given against the risk of explosion or fire due to the
material being processed;
• Warnings shall be given against the risk of cutting.
7.2.2.4 PROJECTILE HAZARDS
• Failure of the work piece, of accessories, or even of the tool itself may
generate high velocity projectiles.
• Always wear impact-resistant eye protection during operation of the
tool. The grade of protection required should be assessed for each
use.
7.2.2.5 ENTANGLEMENT HAZARDS
• Entanglement hazard - choking, scalping and/or lacerations can occur
if neck ware, hair or gloves are not kept away from tool and accessories.
7.2.2.6 OPERATING HAZARDS
• Use of the tool may expose the operator’s hands to hazards including
crushing, impacts, cuts and abrasions and heat. Wear suitable gloves
to protect hands.
• Operators and maintenance personnel must be physically able to
handle the bulk, weight and power of the tool.
• Hold the tool correctly: be ready to counteract normal or sudden
movements – have both hands available.
• Maintain a balanced body position and secure footing.
• Keep hands away from rotating or reciprocation accessories, spindles
or other moving parts.
• Release the start and stop device in the case of an interruption of the
energy supply
• Use only lubricants recommended by the manufacturer.
7.2.2.7 REPETITIVE MOTIONS HAZARDS
• When using a power tool, you may experience discomfort in your
hands, arms, shoulders, neck, or other parts of your body.
• While using a power tool, position your body in a comfortable
posture. Maintain secure footing and avoid awkward or off-balanced
postures. Changing your posture during extended tasks may help
avoid discomfort and fatigue.
• If you experience symptoms such as persistent or recurring discomfort, pain, throbbing, aching, tingling, numbness, burning sensation,
or stiffness, do not ignore these warning signs. Promptly tell your
employer and consult a qualified health professional.
7.2.2.8 ACCESSORY HAZARDS
• Only use sizes and types of accessories and consumables that are
recommended by the power tool manufacturer.
7.2.2.9 WORKPLACE HAZARDS
• Slips, trips and falls are major causes of workplace injury. Be aware
of slippery surfaces caused by use of the tool and also of trip hazards
caused by the air line or hydraulic hose.
• Proceed with care in unfamiliar surroundings. Hidden hazards may
exist, such as electricity or other utility lines.
• This power tool is not intended for use in potentially explosive atmospheres and is not insulated from coming into contact with electric
power.
• Make sure there are no electrical cables, gas pipes etc. that could
cause a hazard if damaged by use of the tool.
7.2.2.10 DUST AND FUME HAZARDS
• Dust from some work processes can cause cancer, birth defects or
other respiratory diseases. Risk assessment of these hazards and
implementation of appropriate controls is essential.
Universal Tool a Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
• If the pneumatic tool is used in a dust filled environment exhaust
air can cause a dust hazard
• Dusts and fumes generated when using power tools can cause
ill health (for example: cancer, birth defects, asthma and/or dermatitis); risk assessment of these hazards and implementation of
appropriate controls of is essential.
• Risk assessment should include dust created by the use of the tool
and the potential for disturbing existing dust.
• Operate and maintain the power tool as recommended in these
instructions, to minimize dust or fume emissions
• Direct the exhaust so as to minimized disturbance of dust in a dust
filled environment
• Where dusts or fumes are created, the priority shall be to control
them at the point of emission.
• All integral features or accessories for the collection, extraction or
suppression of airborne dust or fumes should be correctly used
and maintained in accordance with the manufacturer’s instructions.
• Select, maintain and replace the consumable/inserted tool as
recommended in these instructions, to prevent an unnecessary
increase in dust or fumes
• Use respiratory protection as instructed by your employer or as
required by occupational health and safety regulations;
7.2.2.11 NOISE HAZARDS
• Unprotected exposure to high noise levels can cause permanent,
disabling, hearing loss and other problems such as tinnitus (ringing, buzzing, whistling or humming in the ears);
• Risk assessment of these hazards and implementation of appropriate controls of is essential.
• Appropriate controls to reduce the risk may include actions such as
damping materials to prevent work pieces from ‘ringing’
• Use hearing protection as instructed by your employer or as
required by occupational health and safety regulations;
• Operate and maintain the power tool as recommended in these
instructions, to prevent an unnecessary increase in noise levels;
• Select, maintain and replace the consumable/inserted tool as
recommended in these instructions, to prevent an unnecessary
increase in noise. 7.2.2.12 VIBRATION HAZARDS
• Exposure to vibration can cause disabling damage to the nerves
and blood supply of the hands and arms;
• Wear warm clothing when working in cold conditions and keep
your hands warm and dry;
• If you experience numbness, tingling, pain or whitening of the skin
in your fingers or hands, stop using the power tool, and tell your
employer. You should also seek medical advice from a qualified
occupational health professional.
• Operate and maintain the power tool as recommended in these
instructions, to prevent an unnecessary increase in vibration;
• Select, maintain and replace the consumable/inserted tool as
recommended in these instructions, to prevent an unnecessary
increase in vibration levels;
• Support the weight of the tool in a stand, tensioner or balancer,
because the operator can then use a lighter grip to support the tool.
• Hold the tool with a light but safe grip taking account of the
required hand reaction forces, because the risk from vibration is
generally greater when the grip force is higher.
7.2.3 ADDITIONAL SAFETY INSTRUCTIONS FOR PNEUMATIC
POWER TOOLS - AIR SUPPLY & CONNECTION HAZARDS
• Air under pressure can cause severe injury.
• Always shut off air supply, drain hose of air pressure and disconnect tool from air supply when not in use, before changing accessories or when making repairs.
• Never direct air at yourself or anyone else.
• Whipping hoses can cause severe injury. Always check for damaged or loose hoses and fittings.
• Whenever universal twist couplings (claw couplings) are used, lock
pins must be installed.
• Do not exceed the maximum air pressure stated on the tool.
• Use whip check safety cables to safeguard against possible hose to
tool and hose to hose connection failure.
• Never carry an air tool by the hose.
Safety Information (continued)
AIR COMPRESSOR AND AIR TOOL SAFETY
WARNING: Some dust created by power sanding, sawing,
grinding, drilling and other construction activities contains
chemicals known to cause cancer, birth defects or other
reproductive harm. Some examples of these chemicals are:
1. Risk of Bursting. Do not adjust the regulator to result in output
pressure greater than the marked maximum pressure of this air
tool.
Lead from lead based paint, crystalline silica from bricks
and cement and other masonry products, arsenic and
chromium from chemically-treated lumber.
2. Ensure the hose is free of obstructions or snags. Entangled or
snarled hoses can cause loss of balance or footing and may
become damaged.
Your risk from those exposures varies, depending on how
often you do this type of work. To reduce your exposure to
these chemicals: work in a well-ventilated area, and work
with approved safety equipment, such as dust masks that
are specifically designed to filter out microscopic particles.
3. Never leave a tool unattended with the air hose attached.
4. Do not operate this tool if it does not contain a legible warning
label.
5. Do not continue to use a tool or hose that leaks air or does not
function properly.
6. Never direct a jet of compressed air toward people or animals.
7. Protect your lungs. Wear a face or dust mask if the operation is
dusty.
Important Warnings - Grinders & Cut-Off Tools
1. The stopping time, if longer than 5 seconds, shall be stated, and it shall be recommended to put the grinder in a stable position.
2. When cutting-off, the workpiece shall be so supported that the slot is kept at constant or increasing width during the whole operation.
3. If the abrasive product gets jammed in a cut slot, shut off the grinder and ease the wheel free. Check that the wheel is still correctly
secured and not damaged before continuing the operation.
4. Grinding wheels and cut-off wheels shall not be used for side grinding. (Exception: grinding wheels designed for side grinding.) Grinders
should not be used over the maximum rated speed of an abrasive product.
5. The operator shall pay attention that no bystanders are in the vicinity.
6. The personal protective equipment such as gloves, apron and helmet shall be used.
7. Never operate the grinder without the original guard supplied by the grinder manufacturer correctly fitted to the grinder.
8. Only use the wheel mounting flanges supplied by the grinder manufacturer.
9. Only use grinding wheels and cut-of wheels and wire brushes that meet ANSI standards, ISO standards or both-this will be shown on the
wheel manufacturers label.
10.Only use grinding wheels and cut-off wheels and wire brushes that have the correct center mounting hole or correct threaded insert
center to match the spindle thread on the grinder.
11.Never adjust the grinder, adjust the guard or change the wheel unless the air supply and air hose is disconnected from the grinder.
12.Only personnel trained in the correct methods to adjust guards and change grinding wheels or cut-off wheels or wire brushes should
conduct these operations.
13.Always ensure that you are aware of the direction of the sparks being created by the grinding operation and ensure that the sparks are
not directed to the operator or other persons in the area.
14.Never use a grinder close to any explosive or flammable materials or air conditions.
15.Only use the type of wheel that the grinder manufacturer specifies that the grinder is designed for use with.
16.Never attempt to modify or adapt a grinder or cut-off tool to accept a grinding wheel or cut-off wheel or wire brush that the grinder was
not designed for use with.
17.Eye protection, hearing protection, safety gloves and safety aprons must always we worn when operating a grinder
Specifications
Model
UT8748-4
Motor
(HP)
1.0
Motor
(kW)
0.73
Max. Wheel
Dia. (in.)
4” Type 27
Vibration Level (m/sec2): 1.9
Speed
(RPM)
Exhaust
13,500
Rear
Spindle Size
3/8” - 24
Weight (lb.)
3.1
Weight
(Kg)
1.40
Length (in.)
12.00
Length (mm)
305
Rec.
Pressure
90 psi-6.2 bar
Air Inlet
(NPT)
1/4”
Noise Level (dBA): 88
Rec. Hose
(I.D. in.)
3/8”
Air Cons Av. Air Cons
(cfm)
(cfm)
16
4.0
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Installation
1 Cleaning the air hose
□□ A 3/8" air hose is required, with a maximum length of 25 ft.
□□ Clean the air hose of accumulated dust and moisture
before connecting it to the air supply.
NOTE: If a longer air hose is required, connect a 1/2" air
hose to the 3/8" air hose to ensure the angle grinder has
the necessary air supply.
Recommended Air Line Set-Up
Part
Description
A
Air Tool
B
Quick Plug
C
Quick Coupler
D
Air Hose
E
In-line Regulator
F
In-line Lubricator
G
In-line Filter
H
Air Compressor
Maintenance
Ensure the air line is shut-off and drained of air before removing this tool for service or changing sockets. This will prevent the tool from
operating if the throttle is accidentally engaged.
LUBRICATION
□□ An in-line filter-regulator-lubricator is recommended as it increases tool life and keeps the tool in sustained operation.
□□ Regularly check and fill the in-line lubricator with air tool oil. Avoid using excessive amounts of oil.
□□ Adjust the in-line lubricator by placing a sheet of paper next to the tool’s exhaust ports and holding the throttle open approximately 30
seconds. The lubricator is properly set when a light stain of oil collects on the paper.
□□ If it is necessary to store the tool for an extended period of time (overnight, weekend, etc.), generously lubricate the tool through the air
inlet. Run the tool for approximately 30 seconds to ensure the oil is evenly distributed throughout the tool. Store the tool in a clean and
dry environment.
□□ Recommended lubricants: Air tool oil or any other high grade turbine oil containing moisture absorbent, rust inhibitors, metal wetting
agents, and an EP (extreme pressure) additive.
Universal Tool a Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
Operation
1 Operating the angle grinder
□□ This Angle Grinder is designed to operate on 90 PSIG.
Lower pressure (below 90 PSIG) will reduce performance
of the tool. Higher air pressure (over 90 PSIG) raises the
performance of the tool beyond its rated capacity and
could cause serious damage to the tool and the user.
2 Installing the grinding wheel
WARNING: Disconnect the tool from the air supply before
servicing or changing accessories.
WARNING: Always use ANSI approved grinding stones
with the rated tool RPM.
□□ Remove the flange nut with the pin wrench and spanner
wrench.
□□ Mount the grinding wheel on the
spindle.
□□ Replace the flange nut and retighten using the pin and spanner
wrench.
3 Removing the grinding wheel
WARNING: Disconnect the tool from the air supply before
servicing or changing accessories.
□□ Remove flange nut with the pin and spanner wrench.
□□ Remove the grinding wheel, and replace the flange nut
using the pin and spanner wrench.
4 Grinding and deburring
WARNING: You must wear the ANSI approved eye
protection during the operation; failure to follow this this may
result in serious injury or damage to the operator.
WARNING: Hearing protection is strongly recommended. A
protective respirator is recommended.
□□ Connect the grinder to the air supply.
□□ This tool features the safety lock-off mechanism.
□□ Operate the tool by disengaging the lock-off mechanism
and depressing the throttle lever to run the tool for grinding.
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
Troubleshooting
Problem
Possible Cause
Solution
The tool runs slowly or will not
operate.
There is grit or gum in the tool.
□□ Flush the tool with air tool oil or gum solvent.
The tool is out of oil.
□□ Lubricate the tool according to the lubrication
instructions in this manual.
The air pressure is low.
□□ Adjust the regulator on the tool to the
maximum setting.
□□ Adjust the compressor regulator to the tool’s
maximum setting of 90 psi.
The air hose leaks.
□□ Tighten and seal the hose fittings with pipe
thread tape if leaks are found.
The air pressure drops.
□□ Ensure the hose is the proper size. Long
hoses or tools using large volumes of air may
require a hose with an I.D. of ½" or larger
depending on the total length of the hose.
□□ Do not use a multiple number of hoses
connected together with a quick connect
fitting. This causes additional pressure drops
and reduces the tool power. Directly connect
the hoses together.
There is moisture blowing out
of the tool’s exhaust.
There is a worn rotor blade in the motor.
□□ Replace the rotor blade.
There is a worn ball bearing in the motor.
□□ Remove and inspect the bearing for rust, dirt,
and grit. Replace or clean and grease the
bearing with bearing grease.
There is water in the tank.
□□ Drain the tank. (See the air compressor
manual for instructions.) Lubricate the tool
and run it until water is not evident. Lubricate
the tool again and run for 1-2 seconds.
Warranty
Limited Warranty: Universal Tool warrants its tools to be free from defects in material and workmanship for one year from the date of
purchase. This warranty does not apply to tools which have been abused, misused, modified or repaired by someone other than Universal
Tool or its authorized service centers. If a UT tool proves defective in material or workmanship within one year after purchase, return
it to any authorized service center or Universal Tool freight prepaid. Please enclose your name, address and adequate proof of date of
purchase and a short description of the defect. Universal Tool will,at its option, repair or replace defective tools free of charge. Repairs or
replacements are warranted as described above for the remainder of the original warranty period. Universal Tool's sole liability and your
exclusive remedy under this warranty is limited to repair or replacement of the defective tool.
There are no other warranties expressed or implied and Universal Tool shall not be liable for incidental, consequential or special damages,
or any other damages,costs or expenses excepting only the cost or expense of repair or replacement as described above.
Universal Tool a Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
Service Parts / Exploded View Drawing
FLORIDA-PNEUMATIC.COM
Please contact 1-800-356-3392 for further assistance.
™
Universal Tool
Questions, problems, missing parts?
Call Customer Service
8 a.m.-5 p.m., EST, Monday-Friday
1-800-356-3392
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Retain this manual for future use.
Universal Tool a Division of Florida Pneumatic Manufacturing Corporation
851 Jupiter Park Lane, Jupiter FL 33458
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