Unitor AG-PRO 7, AG-PRO 5, AG-PRO 4 Instruction Manual

Instruction manual

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AG-PRO 7

AG-PRO 5

AG-PRO 4

AG-PRO SERIES

AIR DRIVEN

ANGLE GRINDERS

Revision date 05/2008

1.General Safety and Operation Instruction

1. Unpacking

When unpacking this product, carefully inspect for any damage that may have occurred during

transit. Make sure any loose fittings, bolts, etc., are tightened before putting this product into

service.

2. This product is a part of a high-pressure system and the following safety precautions must be

followed at all times along with any other existing safety rules.

3. Read all manuals included with this product carefully. Be thoroughly familiar with the controls

and the proper use of the equipment.

4. Only persons well acquainted with these rules of safe operation should be allowed to use the air

tool.

Do not exceed maximum operation pressure of the air tool (6.2BAR/90 PSI).

The air tool could explode and result in death or serious personal injury.

5. Do not exceed any pressure rating of any component in the system.

6. Disconnect the air tool from air supply before changing tools or attachments, servicing and

during nonoperation.

7. Always wear safety glasses during operation.

8. Do not wear loose fitting clothing, scarves, or neckties. Loose clothing may become caught in

moving parts and result serious personal injury.

9. Do not wear jewelry when operation any tool Jewelry may become caught in moving parts and

result in serious personal injury.

10. Do not depress trigger when connecting the air supply hose.

11. Always use attachments designed for use with air-powered tools.

Do not use damaged or worn attachments.

12. Never trigger the tool when not applied to a work object. Attachments must be securely

attached. Loose attachments can cause serious injury.

13. Protect airlines from damage or puncture.

14. Never point an air tool at oneself or any other person. Serious injury could occur.

15. Check air hoses for weak or worn condition before each use. Make sure all connections are

secured.

Release all pressure from the system before attempting to install, service, relocate or

performs any maintenance.

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Revision date 05/2008

16. Keep all nuts, bolts and screws tight and ensure equipment is in safe working condition.

17. Do not put hands near or under moving parts.

18. Speed Adjustment

The grinder should never be used to set torque. Use a torque wrench to set the torque. Are

equipped with regulators for speed adjustment. To remove nuts, set the regulator to the

maximum setting. To install nuts, set the regulator to the minimum to medium setting. Do not

over tighten the nuts.

19. Air Hose

It is not recommended to install a quick coupler between the drill and leader (whip) hose.

Using fittings or air hoses, which are too small can create a pressure drop and reduce the

power of the tool. For 76.2 mm (3”), 101.6 mm (4”) and 127 mm (5”) grinder, using 9.525 mm

(3/8”) I.D. fittings with 6.35 mm (I/4") NPT threads are recommended. For 187.8mm (7”)

grinder, using 12.7 mm (1/2”) I.D. fittings with 9.525 mm (3/8”) NPT threads are

recommended.

Most compressors are shipped with a short, 6.35 mm (1/4") I.D. hose. For proper performance

and more convenience, use a 9.525 mm (3/8") I.D. hose. Hoses longer than 15.24 m (50 feet)

should have a 12.7 mm (I/2") I.D.

Never carry a tool by the hose or pull the hose to move the tool or a compressor. Keep

hoses away from heat, oil and sharp edges. Replace any hose that is damaged, weak or

worn.

20. Storage

The grinder must be lubricated before storing. Following the air motor lubrication Instructions

with an exception to step 4. Only run the hammer for 2 to 3 seconds instead of 20 to 30

seconds because more oil needs to remain in the drill when storing.

2.Particular Safety Instruction

1. Information of Noise Level

(1) The noise level at the operator's position is about：

Sound Pressure Level： 83.0 ~108.7

dB(A).

Sound Power Level： 95.7 ~ 119.5 dB(A).

(2) Reference standard：ISO 3746.

(3) Always wear ear protectors during operation.

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Revision date 05/2008

2. Information of Vibration Level

(1)The vibration level at the handle is about： 1.792 ~ 5.706 m/s2.

(2)Reference standard：EN 28662-1.

3. Information of Temperatures

(1)The temperatures at the handle (8 hours/Operation) is 30

℃.

4.Safety Information

Rated rotational speed of the spindle is 5000 ~ 70000

R.P.M.

5. Safety Information

a. General

(1) The Grinder shall be stored in a safe way.

(2) After the control device has been released, it is recommended that the grinder shall be

laid down in a suitable position.

(3) Only lubricants recommended by the manufacturer shall be used.

(4) Rest after continuous operation.

b. Potential injuries

Warning against the following hazards:

(1) Cutting and severing.

(2) Drawing in or trapping of long hair, loose clothing.

(3) Eye injuries.

(4) A whipping compressed air hose.

c. Grinding wheel

(1) Check that maximum operation speed of the abrasive product converted to r/min. is equal

to or greater than the rated speed of the spindle.

(2) Ensure that the wheel dimensions are compatible with the grinder and that the wheel fits

the spindle.

(3) Ensure that the rated type and size of the wheel exactly matches the thread type and size

of the spindle.

(4) Grinding wheels shall be stored and handled with care in accordance with manufacturer’s

instructions.

(5) Inspect the grinding wheel before use, warn against the use of chipped, cracked or

otherwise defective products.

(6) The blotters are used when they are provided with the bonded abrasive product.

(7) Ensure that the abrasive product Is correctly mounted and tightened before use and run

the tool at no-load for 30 seconds in a safe position, stop immediately if there is

considerable vibration or if other defects are defected.

If this condition occurs, check the grinder to determine the cause.

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Revision date 05/2008

6. Explanations Of Warning Signs used For This Tool

The operator’s
Instruction must be read
before work starts

Hearing protection must
be worn

Eye protection must be
used or safety glasses
worn

Direction of rotation
Reverse function

Engine oil Fuel

7. Application

Power tool driving a rotating spindle on which a bonded abrasive product is mounted.

8. The weight of this tools is about： 0.44 ~ 2.7 Kgs.
Note：If the weight of this tool exceeds 15Kgs, the following attention shall be paid to：

(1) Be sure that you can afford the weight.

(2) Be sure to wear foot protection, to prevent the risk of impact due to the drop of tool.

3.Maintenance Instruction

1. Lubrication

Proper lubrication is the owner's responsibility. Failure to lubricate the air tool properly will

dramatically shorten the life of the tool and will void the warranty.

This grinder requires lubrication before the initial use and before and after each additional

use.

2. Grinder requires lubrication throughout the life of the tool and must be lubricated in two

separate areas：the air motor and the grinder mechanism. Follow the outlined procedures.

3. Air Motor Lubrication

The motor must be lubricated daily. An air motor cannot be oiled too often.

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Revision date 05/2008