Unitor IW-PRO 1, IW-PRO 3/4"", IW-PRO 1/2 Instruction Manual

Instruction manual

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are parts list

IW-PRO 1”

IW-PRO ¾”

IW-PRO ½”

IW-PRO SERIES

AIR DRIVEN IMPACT

WRENCHES

Revision date: 02/2008

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 non-operation.

7. Always wear safety glasses during operation.

8. Do not wear loose fitting clothing, scarves, or neck ties. 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.

Do not use hand-tool sockets. Use impact-quality sockets only. Hand-tool socket are
"Glass-Hard" and will shatter and can cause serious personal injury if used with air tools.

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 air lines from damage or puncture.

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

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Revision date 10/2015

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.

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 impact wrench should never be used to set torque. Use a torque wrench to set the torque
and 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 impact wrench 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 12.7 mm(1/2”) and 19.05 mm (3/4") impact wrench, using 9.525mm

(3/8”) I.D. fittings with 6.35 mm (1/4”)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 15.24m (50 feet) should

have a 12.7mm(1/2”) I.D. For 25.4 mm (1”) Impact wrench, using 12.7mm(1/2”) I.D. fittings

with 12.7mm(1/2”) NPT threads are recommended. For proper performance and more

convenience, use 12.7 mm (1/2”) I.D. hose. Hose longer than 15.24m (50 feet) should have a

19 mm (3/4”) 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 scaling hammer must be lubricated before storing. Follow the air cylinder lubrication
instructions with an exception to step 4. Only run the scaling hammer for 2 to 3 seconds
instead of 20 to 30 seconds because more oil needs to remain in the scaling hammer when
storing.

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Revision date 10/2015

2. Particular Safety Instruction

1. Information of Noise Level
(1)The noise level at the operator's position is about:

Model No.:

A-weighted sound

pressure level (Lpf)

A-weighted sound

power level (Lw)

Uncertainty K

wA

IW-PRO 1”

107.5(dB)

117.6(dB)

3(dB)

IW-PRO 3/4”

105.1(dB)

115.3(dB)

3(dB)

IW-PRO 1/2”

103.7(dB)

113.9(dB)

3(dB)

(2)Reference standard :ISO 15744.
(3)Always wear ear protectors during operation.

2. Information of Vibration Level

(1)The vibration level at the handle is about :

Model No.:

Vibration Level

(m/s2)

Uncertainty K

(m/s2)

IW-PRO 1”

5.6

0.15

IW-PRO 3/4”

4.6

0.17

IW-PRO 1/2”

3.1

0.21

(2)Reference standard: EN 28927-2.

3. Warnings

(1)The power tools shall not be used in explosive atmospheres unless specially designed for that

purpose.

(2)Unexpected tool movement due to reaction forces or breakage of inserted tool or reaction bar may

cause injuries to hands or feet.

(3)The power tools shall be isolated from the energy source before changing or adjusting the inserted

tool.
(4)Pay attention to the risk of crushing by torque between a reaction bar and the work piece.
(5)Pay attention to the risk of loose clothing, hair etc. being caught in the rotating spindle of the power

assembly tool.
(6) Pay attention to the risk of being injured if hands are not kept away from the reaction bar, specially

observed when unscrewing in confined work places.
(7) Pay attention to the risk of being injured if hands are not kept away from the nut runner sockets.
(8) Pay attention to the danger to persons from high speed splinters being emitted in the case of a

nut-runner socket failure, in particular relevant of impact wrenches.
(9) Pay attention to the risk of being injured by whipping air hoses.

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Revision date 10/2015

4. Instructions
(1) On the proper adaptation of the reaction bar to the application.
(2) Use only sockets and adapters which are in good condition and are intended for use with power

tools.
(3) Ensure that the assembly power tool is securely fixed to suspension advice, if used.
(4) Adopt a suitable postures to counteract normal or unexpected movement of the power tool due to

reaction forces from the power assembly tool.
(5) Ensure that the pressure of the air or fluid supply is not lower than the lowest pressure specified by

the manufacturer for clutch controlled assembly tools and make sure that the air or fluid supply

pressure does not fail after the clutch has been set.
(6) Release the start and stop device in the case of an interruption of the energy supply.
(7) Only lubricants recommended by the manufacturer shall be used.

5. Explanations Of Warning Signs Used For This Tool

The operator’s

instruction must

be read before

work starts

Warning:

Risk of crushing

(intended for

open-ended

spanners)

Warning: Risk of

crushing (between

the reaction bar

and the working

piece)

Direction of

rotation

6. Application
Rotary power tool, with a reversible spindle driving a hammer which periodically strikes an anvil which
includes a drive adapter for the purpose of tightening or loosening nuts and bolts without producing
any major torque reaction on the power tool.

7. The weight of this tools:

Model No.:

IW-PRO 1”

IW-PRO 3/4”

IW-PRO 1/2”

Weight

10.6 kg

5.84 kg

2.64 kg

Note：If the weight of this tool exceeds 15 Kgs, 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.

4.

Revision date 10/2015