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NEEDLE SCALER
MODEL NO: CAT170
PART NO: 3120187
OPERATING & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC02/22 Rev 1
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INTRODUCTION
Thank you for purchasing this CLARKE Needle Scaler.
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.
Please keep these instructions in a safe place for future reference.
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 CAT170
Min. Hose Size (ID) 8mm (5/16” BSP
Max Operating Pressure 90 psi (6.2 bar)
Average/Max Air Consumption 3.5 cfm (average) 14.8 cfm (max)
Blows per minute 4600 (@ 6.2 bar)
Air Inlet Size 1/4“BSP Female
Sound Pressure Level (LpA dB) 84 dB(A)
Sound Power Level (LwA dB) 95 dB(A)
Vibration Levels
Weight 2.9 kg
Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
9.4 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.
5. Stay alert and use common sense - do not operate the tool when you are
tired or under the influence of alcohol, drugs or medication.
6. 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.
7. Do not overreach - Keep proper footing and balance at all times.
USE OF POWER TOOLS
1. Never use oxygen, carbon dioxide, combustible gasses or any type of
bottled gas as a source of power for this tool.
2. Do not connect the air supply hose with your finger on the trigger.
3. Do not exceed the maximum pressure for the tool of 90 psi / 6.2 bar.
4. Keep the air supply hose away from heat, oil and sharp edges.
5. Do not fit the tool to any stand or clamping device that may damage it.
6. Check hoses for leaks or worn condition before use, and ensure that all
connections are secure.
7. Do not use the tool for any purpose than that described in this manual.
8. Do not carry out any alterations or modifications to the tool.
9. 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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• Moving to another work area.
• Passing the tool to another person.
10. Never use the tool if it is defective or operating abnormally.
11. This tool should be serviced at regular intervals by qualified personnel.
12. Avoid damaging the tool by applying excessive force.
13. Always maintain the tool with care. Keep it clean for the best and safest
performance.
14. Quick change couplings should not be located at the tool. They add
weight and could fail due to vibration.
15. Do not force or misuse the tool. It will do a better and safer job at the rate
for which it was designed.
16. Do not remove any labels. Damaged labels should be replaced.
17. 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.
18. Always use both hands to control the tool.
19. Always ensure the tool has stopped before putting it down after use
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 the tool is not required for
immediate use in order to avoid accidental starting.
3. When not in use the tool should be disconnected from the air supply and
stored in a dry place out of the reach of children.
4. Avoid storing the tool where the temperature is below 0
o
C.
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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.
• 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
ASSEMBLING THE NEEDLE HOLDER
The needle scaler is packed in two halves.
• The main body and hammer assembly
• The needles with needle holder, needle tube and spring
1. Insert the needles, needle holder and spring into the needle tube, Ensure
the needle holder is the correct way round, so that the heads of the
needles sit snugly in the recesses in the holder.
2. Push the needle tube, complete
with needles, needle holder and
spring, on to the main body so that
the retaining lug in the body enters
the slot in the side of the tube.
Continue to push against spring
pressure until the body can be
twisted, and thereby locked, into
one of three positions.
The first position, achieved by turning
the body and the retaining lug
anticlockwise, creates the greatest needle force, the second position,
achieved by pushing harder against spring pressure and turning the body
clockwise, creates a slightly lesser force, and the third position, achieved in a
similar manner, creates even less.
3. Select a position depending upon your work requirements, dictated by the
finish required and the type of material being worked on.
CONNECTING THE AIR SUPPLY
WARNING: COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU
ARE FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF AIR
COMPRESSORS AND A COMPRESSED AIR SUPPLY.
1. Remove the protective plug from the air inlet port and connect a suitable
hose.
2. A gauze filter is fitted within the air inlet adapter. Ensure this filter is always in
place and clean. The airline is connected to the adapter, preferably via a
quick release coupling (not supplied).
3. Connect the other end of the hose to the compressor.
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4. Turn on the air supply and check for air leaks. Rectify any found before
proceeding.
• PTFE tape may be useful for sealing threaded connections.
5. If required, connect an in-line mini oiler to the tool.
• A mini oiler helps to prolong the life of the air tool.
6. 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.
7. Ensure the trigger is NOT depressed when connecting the air line.
USING THE NEEDLE SCALER
1. Hold the tool with both hands and bring towards the work at an angle of
approx. 60-70
trigger and allow the needles to come into contact with the work.
2. Moving slowly across the work surface, proceed to remove scale, rust or
other contaminants taking care not to damage the surface. Regulate the
air supply pressure and locking groove setting to adjust the performance of
the tool.
3. Release the trigger to stop operation, noting that the tool may run briefly
after the trigger is released.
o
. With the airline pressure set to 90 psi (621bar), squeeze the
DISCONNECTING THE AIR SUPPLY
1. Do not disconnect the compressed air supply hose until the air supply has
been shut down or isolated at the shut off valve and the compressed air
expelled by running the tool until it stops.
2. Refer to the compressor instruction manual for the procedure to shut down
and release the compressed air.
3. Once the pressure has been released, disconnect the air supply hose from
the needle scaler.
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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.
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.
DAILY OR BEFORE USE
1. Before use, drain water from the air-line and compressor.
2. Lubricate the air tool daily or before use for optimum performance, using a
high quality airline oil either via a lubricator in the air supply system or by
placing a few drops into the air inlet immediately before use. This should be
carried out regardless of whether or not an in-line lubricator is used.
CLEANING & OVERHAUL
1. Keep the tool clean and free from debris.
2. Grit or gum deposits in the mechanism may eventually reduce efficiency.
This condition can be corrected by cleaning the air inlet strainer and
flushing out the tool with gum solvent oil or an equal mixture of SAE No10 oil
and paraffin.
3. Failing this, the tool should be disassembled, thoroughly cleaned, dried
and reassembled. You may prefer to take the tool to your CLARKE dealer if
internal maintenance is required.
4. If the sander becomes sluggish and the air supply is of good quality, it may
be necessary to replace worn or damaged parts. You may prefer to take
the tool to your Clarke dealer if internal maintenance is required.
5. Replacement needles can be fitted if required as described on page 6.
STORAGE
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 depress the trigger in order to lubricate
the internal parts.
When not in use, the needle scaler should be disconnected from the air supply
and stored in a dry place out of the reach of children. Avoid storing in a damp
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. Piston parts worn.
2. Worn or sticking
mechanism due to
lack of lubricant.
1. Moving parts
jammed with gum/
dirt.
2. Air-line regulator in
closed position.
3. General airflow
blocked by dirt.
1. Piston 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.
ACCESSORIES AND CONSUMABLES
A wide range of accessories is available including filter/regulators, lubricators,
high-pressure hoses (5 to 50 metres) etc. Contact your Clarke dealer for further
information or the Clarke International Service Department.
Replacement 19-piece Needle Set;- CAT172 (Clarke part no; 3120189).
Clarke Air Line Oil (part no. 3050825) is available from your Clarke dealer.
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COMPONENT PARTS
No Description No Description
1 Main Body 16 Front Valve Block
2 O-Ring 17 Piston
3 O-Ring 18 Barrel Sleeve
4 Throttle Valve 19 Nose
5 Spring Gasket 20 Key
6 Gasket 21 Barrel Assembly
7 Valve Cap 22 Driver Retainer
8 Pin 23 Retainer Buffer
9 Throttle Lever 24 Retainer Clip
10 Hose Adaptor 25 Needle Driver
11 Locking Ring 26 Needle (19)
12 Alignment Shim 27 Needle Holder
13 Rear Valve Block 28 Spring
14 Pin (2) 29 Needle Tube
15 Valve
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DECLARATION OF CONFORMITY
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