UNIMAC AIRSHEUMCAH12 Pneumatic Metal Shears Air Tin Snips User Manual

User Manual

[Revision 8.0 November 2023]

READ THIS MANUAL CAREFULLY BEFORE USE – FAILURE TO DO SO MAY RESULT IN INJURY, PROPERTY DAMAGE AND MAY

VOID WARRANTY. • KEEP THIS MANUAL FOR FUTURE REFERENCE. • Products covered by this manual may vary in appearance,

assembly, inclusions, specifications, description, and packaging.

AIR METAL SHEAR

i

Table of Contents

Safety .................................................................................................................................................................... 1

Safety Instructions ........................................................................................................................................... 1

Set-Up ................................................................................................................................................................... 3

Components and Controls ............................................................................................................................... 3

Item Parts ........................................................................................................................................................ 3

Spare Parts ..................................................................................................................................................... 4

Unpacking ....................................................................................................................................................... 4

Assembly ......................................................................................................................................................... 4

Air Supply Set-Up Tips .................................................................................................................................... 4

Operation ............................................................................................................................................................. 5

Maintenance ......................................................................................................................................................... 6

Lubrication ....................................................................................................................................................... 6

Daily Maintenance ........................................................................................................................................... 6

Troubleshooting ............................................................................................................................................... 8

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.

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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.

•

Always use a Residual Current Device (RCD) (GFCI) / Earth Leakage Circuit Breaker / Safety Switch when

operating this item (electrical items only).

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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AIR METAL SHEAR

3

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

NOTE: Oil bottle

not included

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AIR METAL SHEAR

4

Spare Parts

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.

Spare parts available

for purchase, scan QR

code below:

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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.

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AIR METAL SHEAR

6

Maintenance

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.

• If used, check and adjust any automatic in-line oiler as required to maintain a fine oil mist at the tool.

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AIR METAL SHEAR

7

• 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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8

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

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AIR METAL SHEAR

9

SYMPTOM POSSIBLE CAUSE SOLUTION

Tool does not shut off when

trigger is released

Trigger binding or throttle valve at fault

Remove matter that is binding trigger,

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

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Some experts believe that the incorrect or prolonged use of almost any

product may cause serious injury or death. To help reduce your risk of serious

injury or death, refer to the information below. For more information, see

www.datastreamserver.com/safety



Consult all documentation, packaging and

product labelling before use. Note that

some products feature documentation

available online. It is recommended to print

and retain the documentation.



Before each use, check the product for

loose/broken/damaged/missing parts, wear

or leaks (if applicable). Never use a

product with

loose/broken/damaged/missing parts, wear

or leaks.



Products must be inspected and serviced

(if applicable) by a qualified technician

every 6 months. This is based on average

residential use by persons of average size

and strength, and on a property of average

metropolitan size. Use beyond these

recommendations may require more

frequent inspections/servicing.



Ensure that all users of the product have

completed a suitable industry recognised

training course before being allowed

access to the product.



The product has been supplied by a general merchandise

retailer that may not be familiar with your specific

application or description of application. Be sure to attain

third-party approval from a qualified specialist for your

application before use, regardless of any assurances from

the retailer or its representatives.



This product is not intended for use where fail-safe

operation is required. As with any product (for example,

automobile, computer, toaster), there is the possibility of

technical issues that may require the repair or replacement

of parts, or the product itself. If the possibility of such failure

and the associated time it may take to rectify could in any

way inconvenience the user, business or employee, or

financially affect the user, business or employee, then the

product is not suitable for your requirements. This product is

not intended for use where incorrect operation or a failure of

any kind, including but not limited to, a condition requiring

product return, replacement, parts replacement or service

by a technician may cause financial loss, loss of employee

time or an inconvenience requiring compensation.



If this product has been purchased in error when

considering the information presented here, contact the

retailer directly for details of their returns policy, if required.

diagrams or images may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying, scanning or recording, or any information storage and retrieval system,

without express permission or consent from the publisher.

UNIMAC AIRSHEUMCAH12 Pneumatic Metal Shears Air Tin Snips Steel Aluminium Sheet Cutters

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UNIMAC AIRSHEUMCAH12 Questions and Answers