Clarke CAT 84, 3110820 User guide

DE-SCALING KIT

MODEL NO: CAT84

PART NO: 3110820

OPERATING & MAINTENANCE

INSTRUCTIONS

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INTRODUCTION

Thank you for purchasing this CLARKE Descaling Kit.

Please read all of the safety and operating instructions carefully before using
this product. In doing so you will ensure the safety of yourself and that of others
around you, and you can look forward to your purchase giving you long and
satisfactory service.

GUARANTEE

This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.

This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended. Faulty goods should be returned to their place of purchase, no
product can be returned to us without prior permission.

This guarantee does not effect your statutory rights.

SPECIFICATION

Model Number CAT84

Min. Hose Size (ID) 8mm (5/16” BSP

Max Operating Pressure 90 psi (6.2 bar)

Max Air Consumption 4 cfm (average)

Blows per minute 5000 (@6.2 bar)

Piston Stroke 35 mm

Air Inlet Size 1/4“BSP Female

Sound Pressure Level (LpA dB) 92 dB(A)

Sound Power Level (LwA dB) 104.4 dB(A)

Vibration Levels

Weight 2.2 kg

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12.6 m/s

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GENERAL SAFETY RULES

CAUTION: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN
PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY.

WORK ENVIRONMENT

1. Keep the work area clean and tidy.

2. Dress appropriately - Do not wear loose clothing or jewellery. Tie long hair
out of the way.

3. Keep children and visitors away - Do not let children handle the tool.

4. Do not operate the tool where there are flammable liquids or gases.

USE OF POWER TOOLS

1. Stay alert and use common sense - do not operate the tool when you are
tired or under the influence of alcohol, drugs or medication.

2. Always wear eye protectors when using the tool. Eye protectors must
provide protection from flying particles from the front and the side. Ear
protectors should also be worn.

3. Do not overreach - Keep proper footing and balance at all times.

4. Never use oxygen, CO
a source of power for this tool.

5. Do not connect the air supply hose with your finger on the trigger.

6. Do not exceed the maximum pressure for the tool of 90 psi / 6.2 bar.

7. Keep the air supply hose away from heat, oil and sharp edges.

8. Do not fit the tool to any stand or clamping device that may damage it.

9. Check hoses for leaks or worn condition before use, and ensure that all
connections are secure.

10. Do not use the tool for any purpose than that described in this manual.

11. Do not carry out any alterations or modifications to the tool.

12. Always disconnect from the air supply when:

• Performing any maintenance.

• The tool is not in use.

• The tool will be left unattended.

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, combustible gasses or any type of bottled gas as

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• Moving to another work area.

• Passing the tool to another person.

13. Never use the tool if it is defective or operating abnormally.

14. This tool should be serviced at regular intervals by qualified personnel.

15. Avoid damaging the tool f by applying excessive force.

16. Always maintain the tool with care. Keep it clean for the best and safest
performance.

17. Quick change couplings should not be located at the tool. They add
weight and could fail due to vibration.

18. Do not force or misuse the tool. It will do a better and safer job at the rate
for which it was designed.

19. Do not remove any labels. Damaged labels should be replaced.

20. This tool vibrates with use. Vibration may be harmful to your hands or arms.
Stop using the tool if discomfort, a tingling feeling or pain occurs. Seek
medical advice before resuming use.

AIR HAMMER SPECIFIC HAZARDS

1. Only use accessories designed for use with this power tool.

2. Never use any of the chisels supplied as hand struck tool.

3. Never use blunt chisels which require excessive pressure and can break
from fatigue. Always use sharp tools.

4. Never mis-use the tool by prising which can result in a broken tool.

5. Ensure there are no hidden electrical cables, gas pipes etc, which could
cause a hazard if damaged by action of the chisels.

TRANSPORT & STORAGE

1. Never carry the tool by the air hose or with your finger on the trigger.

2. Always disconnect from the air supply when changing bits or when the tool
is not required for immediate use in order to avoid accidental starting.

3. Always use both hands to control the tool.

4. Always ensure the tool has stopped before putting it down after use

5. When not in use the tool must be disconnected from the air supply and
stored in a dry place out of the reach of children.

6. Avoid storing the tool where the temperature is below 0

Please keep these instructions in a safe place for future reference.

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C.

COMPRESSED AIR REQUIREMENTS

WARNING: COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU
ARE FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF
COMPRESSORS AND COMPRESSED AIR SUPPLY.

• Use only clean, dry, regulated compressed air as a power source.

• Air compressors used with the tool must comply with the appropriate

European Community Safety Directives.

• A build-up of moisture or oil in the air compressor will accelerate

wear and corrosion in the tool. Ensure any moisture is drained from
the compressor daily and the inlet filter is kept clean.

• If an unusually long air hose is required, (over 8 metres), the line

pressure or the hose inside diameter may need to be increased.

• The air hose must be rated at least 150% of the maximum operating

pressure of the tool.

• A typical air line layout is shown above. If an automatic in-line filter/

regulator is used, it will keep the tool in good condition, but should
be regularly checked and topped up with oil. clarke airline oil should
be used, and the lubricator adjusted to approx 2 drops per minute.

• For optimum performance it is recommended that a 3/8” ID hose is

used.

• Never exceed the maximum operating pressure for the tool. It is

recommended that air pressure to this tool does not exceed 90 psi
at the tool when running. Higher pressures and dirty air will shorten
the life of the tool due to faster wear and is a possible safety hazard.

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BEFORE USE

WARNING: COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU
ARE FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF AIR
COMPRESSORS AND COMPRESSED AIR SUPPLY.

NOTE: Ensure the compressor is turned off.

1. If required, connect an in-line mini oiler to the tool.

• A mini oiler helps to prolong the life of the air tool.

2. If a mini-oiler is not being used, run a few drops of oil through the tool
before use. It can be entered through the airline connector or via the hose
at the nearest connection to the air supply.

3. Connect a suitable hose as shown.

4. Connect the other end of the hose to the compressor.

5. Turn on the air supply and check for air leaks. Rectify any found before
proceeding.

• PTFE tape may be useful for sealing threaded connections.

Your air tool is now ready for use.

OPERATION

FITTING THE NEEDLE HOLDER

1. Push the needle tube complete
with needles, firmly onto the nose
of the tool and screw on fully.

2. Tighten the three grub screws
shown with a hex key to secure the
needle tube in place.

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FITTING THE CHISEL

1. Insert the chisel into the air
hammer as shown.

2. Replace the retaining spring.

• Use the lugs to gain purchase

and tighten.

USING THE TOOL

1. Hold the tool firmly, then bring the
tool towards the work at an angle
of approximately 60-70 degrees.

2. Pull the trigger with the chisel in
light contact with the work.

3. Move slowly across the work
surface. To remove scale, rust or
other contaminants, only a light
force should be required.

4. Release the trigger to stop operation, whilst maintaining contact with the
work. Note that the tool may impact briefly after the trigger is released.

5. Needle/chisel force can be adjusted by turning the regulator knob
located at the base of the hand grip.

6. To increase force, turn the regulator clockwise or anti-clockwise to reduce.

NOTE: The retaining spring has a life expectancy, depending upon the

intensity of usage. It is recommended that you procure a spare
spring for use in the event of failure occurring during the course of
a particular job.

DISCONNECTING THE AIR SUPPLY

1. Do not disconnect the air supply hose until the compressor has been shut
down and the compressed air released.

2. Refer to the compressor instruction manual for the procedure to shut down
and vent the compressed air.

3. Once the pressure has been released, disconnect the air supply hose from
the air tool.

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MAINTENANCE

WARNING: MAKE SURE THAT THE AIR TOOL IS DISCONNECTED FROM THE
AIR SUPPLY BEFORE STARTING ANY CLEANING, OR MAINTENANCE
PROCEDURES.

DAILY

1. Before use, drain water from the airline filter and compressor.

2. Pour a few drops of Clarke air-line
oil, into the tool air inlet. This should
be carried out regardless of
whether or not an in-line mini oiler
is used. If an in-line mini oiler is not
used, this procedure should be
repeated after every two to three
hours of use, or at the start of the
working day.

3. Keep the body of the tool clean
and free from debris.

CLEANING

1. Keep the body of the tool clean and free from debris.

2. Grit or gum deposits in the tool may also reduce efficiency. This condition
can be corrected by cleaning the air strainer and flushing out the tool with
gum solvent oil, or failing this, the tool should be disassembled, thoroughly
cleaned, dried and reassembled.

3. After extensive use, remove the inlet screen filter and flush out the
mechanism with gum solvent oil or an equal mixture of SAE No10 oil and
paraffin. Allow to dry before use.

4. If the tool runs erratically or becomes inefficient, and the air supply is of
good quality, it may be necessary to dismantle the air motor and replace
worn or damaged parts. You may prefer to take the tool to your CLARKE
dealer if internal maintenance is required.

STORAGE

1. If the tool is to be stored, or is idle for longer than 24 hours, run a few drops
of Clarke air line oil into the air inlet, and run the tool for 5 seconds in order
to lubricate the internal parts. Store the tool safely in its box in a dry, secure
environment.

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TROUBLESHOOTING

SYMPTOM PROBLEM SOLUTION

Tool runs at normal
speed but slows down
under any load.

Tool runs slowly. Air flows
weakly from exhaust.

Tool will not run. Air flows
freely from exhaust.

Tool will not shut off. 1. Throttle O-rings

1. Motor parts worn.

2. Worn or sticking
mechanism due to
lack of lubricant.

1. Motor parts jammed
with gum/dirt.

2. Air-line regulator in
closed position.

3. General airflow
blocked by dirt.

1. Motor vanes stuck
due to buildup of
foreign material.

damaged or ill-fitting
in seat.

1. Return to Clarke dealer
for repair.

2. Drip air tool lubricating
oil into air inlet. Allow oil
to soak moving parts
before using.

1. Examine inlet air filter for
blockage. Drip a few
drops of air tool lubricat­ ing oil into air inlet.

2. Adjust in-line regulator to
open position.

3. Operate tool in short
bursts.

1. Disconnect air supply
and rotate tool assembly
manually.

2. Try operating tool in
short bursts.

3. Tap motor housing gently
with a rubber mallet.

4. Drip a few drops of air
tool lubricating oil into air
inlet to soak moving
parts.

1. Return to Clarke dealer
for repair.

PERFORMANCE

Please note that factors other than the tool may effect its operation and
efficiency such as reduced compressor output, excessive drain on the airline,
moisture or restrictions in the air-line, or the use of connectors of improper size
or poor condition which will reduce air supply.

**Clarke Air Line Oil (part no. 3050825) is available from your Clarke dealer.

Your Clarke air tool has been designed to give long and trouble free service. If,
however, having followed the instructions in this booklet carefully, you
encounter problems, take the unit to your local Clarke dealer.

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COMPONENT PARTS

No Description No Description

1 Handle 12 Lower Valve Seat

2 Pin (Trigger) 13 n/a

3 Pin (Regulator) 14 Piston

4 Hose Adaptor 15 Cylinder

5 Throttle Spring 16 Retainer Spring

6 Valve Stem 17 O-Ring (d7.8xw1.9)

7 O-Ring (2.5x1.5) 18 Regulator

8 Trigger 19 Needle Scaler Attachment

9 Steel Ball Seat 20 5” Flat Chisel

10 Upper Valve Assy 20-1 5” Spot Weld Cutter

11 Valve Disc 20-2 5” Pointed Chisel

When requesting spare parts from the above list, please quote the pre-fix
KLAH01 - KLAH20. Replacement needle set;- Clarke part no; 3110565. A wide
range of accessories is available including filter/regulators, lubricators, high­pressure hoses (5 to 50 metres) etc. Contact your Clarke dealer for further
information or the Clarke International Service Department.

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DECLARATION OF CONFORMITY

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