Unimac Air Metal Shear User manual

AIR METAL SHEAR
User Manual
RETAIN THIS MANUAL FOR FUTURE REFERENCE
PLEASE READ THIS MANUAL CAREFULLY BEFORE USE

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Table of Contents
Safety....................................................................................................................................................................... 1
Safety Instructions..............................................................................................................................................1
Set-Up ......................................................................................................................................................................3
Components and Controls .................................................................................................................................3
Item Parts...........................................................................................................................................................3
Unpacking...........................................................................................................................................................4
Assembly............................................................................................................................................................4
Air Supply Set-Up Tips.......................................................................................................................................4
Operation.................................................................................................................................................................5
Maintenance............................................................................................................................................................ 5
Lubrication..........................................................................................................................................................6
Daily Maintenance..............................................................................................................................................6
Troubleshooting.................................................................................................................................................. 7

AIR METAL SHEAR
1
Safety
WARNING!
This manual provides critical safety instructions on the proper setup, operation, maintenance, and service of this
machine/tool. Save this document, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual may result in fire or serious personal
injury—including amputation, electrocution, or death.
The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in a safe environment, personnel training and
usage authorization, proper inspection and maintenance, manual availability and comprehension, application of
safety devices, cutting/sanding/grinding tool integrity, and the usage of personal protective equipment.
Edisons will not be held liable for injury or property damage from negligence, improper training, machine
modifications or misuse.
Some dust created by power sanding, sawing, and grinding, drilling, and other construction activities contains
chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some
examples of these chemicals are:
Lead from lead-based paints.
Crystalline silica from bricks, cement and other masonry products.
Arsenic and chromium from chemically-treated lumber.
Your risk from these 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 those dust masks that are
specially designed to filter out microscopic particles.
Safety Instructions
Keep all safety devices in place and in working order.
Remove adjusting keys and wrenches. Form habit of checking to see that keys and adjusting wrenches are
removed from tool before operation.
Keep work area clean. Cluttered areas and benches invite accidents.
Keep children and visitors away. All children and visitors should be kept at a safe distance from work area.
Make workshop child proof. Make sure to lock your shop and shut-OFF the power and air supply.
Do not force tool. It will do the job better and safer at the rate for which it was designed.
Use the right tool. Do not force tool or attachment to do a job for which it was not designed.
DO NOT USE UNDER THE INFLUENCE OF ALCOHOL, OR WHEN TIRED.
Use correct air pressure. Exceeding the maximum PSI rating of this tool may cause seal damage,
unpredictable operation, or line burst.

AIR METAL SHEAR
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Use proper air hose. Make sure your air hose is in good condition and is long enough to reach your work
without stretching.
Secure work. Use clamps or a vise to hold work when practical. It is safer than using your hand and frees
both hands to operate tool.
Maintain tools with care. Keep tools lubricated and clean for best and safest performance. Follow
instructions for lubricating and changing accessories.
Prevent accidental operation. Do not carry tool with hand on trigger and always disconnect from air when not
in use.
Maintain tools with care. Keep tools lubricated and clean for best and safest performance. Follow
instructions for lubricating and changing accessories.
Be aware of hose location. Hoses can easily become a tripping hazard when laid across the floor in a
disorganized fashion.
Wear approved hearing protection. Air escaping from pneumatic tools can exceed safe exposure limits and
may cause hearing damage with prolonged exposure.
Air line connection inspection. An air line that becomes disconnected from a tool can whip violently, causing
severe injury. Verify that air line is properly connected and the fittings are tight and free of leaks. A leaking
fitting can indicate the fitting is cracked and is about to fail.
Wear proper apparel. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry that may
get caught in moving parts. Nonslip footwear is recommended. Wear a protective hair covering to contain
long hair.
Always use safety glasses. Also use a face or dust mask if cutting operation is dusty. Everyday eyeglasses
only have impact resistant lenses, they are NOT safety glasses.
Changing bits
When servicing or removing metal from the jaws, disconnect the shear from air to prevent an accidental start-up
injury.
Tool Stability
To establish the best control possible when cutting, hold the handle and housing with two hands, and stabilize
your hands and body against a fixed object. When free-hand cutting (using one hand) use a guide to slide the
pneumatic shear along when making the cut to avoid severe injury.
CAUTION!
No list of safety guidelines can be complete. Every shop environment is different. Always consider safety first, as
it applies to your individual working conditions. Use this and other tools with caution and respect.
Failure to do so could result in serious personal injury, damage to equipment or poor work results.

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Set-Up
Components and Controls
Item Parts
(Refer to right image)
A. Pneumatic Metal Shear......................1
B. Quick Disconnect Air Fitting.............. 1
C. Bottle for Oil.......................................1
D. Hex Wrench 4mm..............................1

AIR METAL SHEAR
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Unpacking
Your tool was carefully packaged for safe transportation. Remove the packaging materials from around your tool
and inspect it. If you discover the tool is damaged, please immediately call our customer service hotline. Save
the containers and all packing materials for possible inspection by the carrier or its agent. Otherwise, filing a
freight claim can be difficult. When you are completely satisfied with the condition of your shipment, inventory the
contents.
If any non-proprietary parts are missing (e.g., a nut or a washer), we will gladly replace them; or for the sake of
expediency, replacements can be obtained at your local hardware store.
Assembly
1. Remove the plastic plug from the air inlet in the handle.
2. Apply pipe sealant on the threads of the quick disconnect fitting.
3. Thread the fitting into the pneumatic shear air inlet and tighten.
4. Press the trigger, and place a few drops of air tool oil into the air inlet, and release the trigger. The
pneumatic shear is ready for use.
Air Supply Set-Up Tips
If the air hose is longer than 25-feet, increase the air pressure to 100 PSI to compensate for air flow
restriction.
For consistent air flow, use air hoses with an inside diameter of 3⁄8" or larger.
To eliminate air system moisture and maintain automatic lubrication, install a main or in-line filter water
separator as far as possible from the air compressor, but before any automatic in-line oiler.
See examples in Figure 3 below.

AIR METAL SHEAR
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Operation
To complete a typical cutting operation, the following is done:
1. Put on safety goggles and gloves.
2. Mark the cut line, secure the workpiece, and clamp a guide to
the workpiece if needed.
3. Determine if the swivel head needs to be rotated for optimum
tool control and cut line viewing.
If so, loosen the swivel head cap screw (see Figure 1), rotate the
head to the required angle, and retighten the cap screw.
4. Apply a few drops of air tool oil on the jaws and in the air inlet
fitting.
5. Connect the air supply hose to the pneumatic shear.
6. Engage the tip of the jaws against the edge of the sheet metal.
7. Pull the trigger, and in a controlled manner, push the shear into the workpiece to begin cutting. As the cut
progresses, keep the angled slide (see Figure 1) flat against the surface of the sheet metal, so the jaws and
sheet metal do not bind.
8. When finished, or if leaving the area, disconnect the shear from air, and store it away from children.
Maintenance

AIR METAL SHEAR
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Lubrication
In most cases for periodic tool use, manual lubrication is sufficient. However, if the tool is to be used on a
consistent basis, we recommend installing an automatic oiler to eliminate dry runs and ensure maximum tool life.
The two methods are explained below:
Add a few drops of Pneumatic/Air Tool Oil before each use into the airline connection before operation (fig 1).
Pump lever a few times to ensure oil runs through tool (fig 2).
Position the end of the tool safely away from you, and run the tool for 30 seconds to completely circulate the oil
through the tool and into the rag.
Automatic Lubrication: Adjust the automatic in-line oiler. Place a sheet of paper next to the exhaust port, run
the tool at three or four 30-second intervals. When finished, the paper should show a slight oil stain. If no oil is
seen or excessive oil drips from the paper, adjust the oiler and repeat this process until the adjustment is correct.
Daily Maintenance
Before and after each use:
•Check and replace any leaking air fittings; bubbled, cut, or worn hoses.
•D rain water from the compressor tank, water filter separator reservoirs, and lubricate the pneumatic shear.
Periodically as required:
•Clean the filter screen behind the air inlet fitting.
•I f used, check and adjust any automatic in-line oiler as required to maintain a fine oil mist at the tool.
•Sharpen dulled jaws edges by removing both jaw retaining cap screws, and the jaws. Next use a dressing
stone at the locations shown below. Do not use a grinder.

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Troubleshooting
SYMPTOM
POSSIBLE CAUSE
SOLUTION
Tool runs at normal speed
but bogs down when
cutting, or tool runs slowly
with little air exiting the
exhaust
Pneumatic shear is being overloaded
Reduce feed pressure. Only cut
materials within limits of tool
Jaws are dull or loose
Dress or replace jaws
Trigger is at fault
Remove any metal that may be binding
trigger from full travel
Intake filter screen is clogged
Clean the filter screen behind the air
supply fitting
Insufficient air supply volume or pressure
Set the regulator to 90 PSI, 100 PSI if
the air hose is longer than 25 feet.
Repair any leaking fittings, remove all
restrictions and hose kinks. Ensure that
all hoses and lines have an inside
diameter of at least 3/8”.
Incorrect lubrication is affecting tool
Make sure tool is lubricated correctly
and does not run dry. Prevent oil from
flooding the air tool by re-adjusting the
automatic oiler.
Water is entering tool
Service or reposition the air filter water
separator as far as possible from the
compressor. This allows for maximum
air cooling and water condensation for
the water separator.
Air tool motor clogged with oil-water sludge.
Clean or rebuild the air tool as required,
and correct moisture or lubrication
problem in the air.
Tool does not operate when
the trigger is pressed, but
air runs freely from exhaust
Motor is at fault
Motor may be stuck in position from
improper storage. Lubricate the air tool,
remove the swivel head cap screw and
the head. Using a 17mm wrench, rotate
the spindle back and forth slightly a few
times. Next, operate the tool while re-
oiling several times in the process of
flushing the tool.
Motor or gearing is at fault
Replace tool
Tool runs slowly, and only a
small amount of air exits
from the exhaust port
Air regulator or tool adjustment is faulty
Adjust the air regulator to 90 PSI, or
100 Psi if the air hose is longer than 25
feet. Re-adjust the throttle valve screw
to the fully open position
Trigger throttle valve is obstructed
Disassemble the throttle valve and
clean out sludge and contaminants
Intake filter screen is clogged
Clean the filter screen behind the air
supply fitting
Motor loaded with moisture or oil sludge
Disassemble air tool, clean, and
relubricate. Lubricate air tool and rotate
spindle by hand a few times. Next, use
the trigger to operate the air tool, re-
oiling several times in the process to
flush the system
Tool does not shut off when
Trigger binding or throttle valve at fault
Remove matter that is binding trigger,

AIR METAL SHEAR
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SYMPTOM
POSSIBLE CAUSE
SOLUTION
trigger is released
so throttle valve is free to fully release
Throttle valve stuck open
Replace throttle valve spring or O-rings
Air tool becomes hot or
noisy during operation
Air tool heats up from insufficient lubrication or a
worn bearing
Repair air tool, and correct in-line oiler
lubrication adjustment, or follow manual
lubrication requirements
Air tool becomes too cold to
hold, or ice crystals from at
exhaust port
The intake of moisture and the pressure drop is
causing moisture
Keep compressor tank drained,
service, reposition, or add additional
water separators in the supply system

Some experts believe the incorrect or prolonged use of almost any
product could causeserious injury or death. For information that
may reduce your risk of serious injury or death consult thepoints
below and additionally, the information available at
www.datastreamserver.com/safety
- Consult all documentation, packaging and
product labelling be fore use. Note that some
products feature online documentation which
should be printed and kept with the product.
- Check product for loose / broken / damaged /
missing parts, wear or leaks (if applicable) be fore
each use. Never use a product with loose / broken
/ damaged / missing parts, wear or leaks (if
applicable).
- Products must be inspected and serviced (if
applicable) by a qualified specialist every 6
months assuming average residential use by a
person of average weight and strength, ab ove
average technical aptitud e, on a property
matching average metropolitan specification.
Intended use outside these guidelines could
indicate the product is not suitable for intended
use or may require more regular inspection or
servicing.
- Ensure all possible users of the p roduct have
completed an industry recognised training course
before being given access to the product.
- The product has been supplied by a general merchandise
retailer that may not be familiar with your specific applic ation or
your description of the application. Be sure to attain third party
approval for your application from a qualified specialist before use
regardless of prior assurances by the retailer or its representatives.
- This product is not intended for use where fail-safe operation is
required. As with any product (take an au tomobile, aircraft,
computer or ball point pen for example) there is always a small
chance of a technical issue that needs to be repaired or may
require replacement of the product or a part. If the possibility of
such failure and the associated time it takes to rectify could in any
situation inconvenience the user, business or employee or could
financially affect the user, business or employee then the product
is not suitable for your requirements. This p roduct is not for use
where incorrect operation or a failure of any kind, including but
not limited to a condition requiring product return, replacement,
service by a technician or replacement of parts could cause a
financial loss, loss of employee time or an in convenience
requiring compensation.
- If this item has been purchased in error considering the points
above simply contact the retailer directly for details of their
returns policies if required.