Clarke CAT 136, 3120150 User guide

DUAL ACTION AIR SANDER

MODEL NO: CAT136

PART NO: 3120150

OPERATING & MAINTENANCE

INSTRUCTIONS

ORIGINAL INSTRUCTIONS DL0522 - Rev 2

INTRODUCTION

Thank you for purchasing this CLARKE Air Sander.

Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. 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.

roblems, take the unit to your local CLARKE dealer.

IMPORTANT

Please read all of the safety and operating instructions carefully before using
this product. The following safety symbols are to be found on the machine.

Read this instruction
booklet carefully
before use.

Wear eye protection Wear dust mask .

Wear ear protection

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.

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

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

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

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

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

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, combustible gases or any type of bottled gas as a

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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• 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 by applying excessive force of any kind.

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.

SANDER-SPECIFIC SAFETY RULES

1. Inspect the sanding pad before use. Do not use if cracked or broken.
Check that the rated speed of the backing pad is at least as high as that
of the machine.

2. Avoid contact with the moving sanding pad and wear suitable gloves to
protect the hands.

3. Never run the tool unless the abrasive pad is applied to the workpiece.

4. Beware of potentially explosive atmospheres being caused by dust / fumes
resulting from sanding and used dust extraction systems where possible.

5. Always wear a face mask when using the sander as protection from
airbourne particles of sanded material. Avoid disturbing existing dust and
minimise the scattering of dust in the worplace environment. Take steps to
control the dust at the point of emission.

TRANSPORT & STORAGE

1. Never carry the tool by the air hose.

2. Never carry the tool with your finger on the trigger.

3. 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 (preferably in a locked
cabinet).

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

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o

C.

OVERVIEW

NO DESCRIPTION NO DESCRIPTION

1 Trigger 3 Speed Regulator

2 Air Inlet 4 Locking Plate

The CAT136 Sander is ideal for use in garages and workshops. Random orbit
(dual action) sanders give a virtually scratch - free finish on various surfaces
prior to painting or varnishing the finished surface.

When unpacking the tool, any damage or deficiency should be reported to
your CLARKE dealer immediately. The carton contains:

•Dual Action Sander

• 150 mm (6”) Sanding Pad

Your dual -acting sander 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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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

INSTALLING THE PAD

1. Rotate the bearing seat so that
the apperture faces the tab of the
set plate.

2. Push the set plate forward so that
the tab enters the apperture in
the bearing seat.

• The bearing seat will be held

static.

3. Screw the sanding pad onto the
bearing seat by hand and ensure
it is fully tightened. Release the set plate tab before the tool can be used.

FITTING THE SANDING SHEET

1. Peel off the back of the self adhesive sanding sheet and stick it to the
backing pad. Take care that it is positioned centrally.

IMPORTANT: Only use sanding sheets designed for use with this type of
150mm dia sanding pad.

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 COMPRESSED AIR SUPPLY.

1. Pour 2-3 drops of CLARKE airline oil into the air inlet. This should be done
regardless of whether or not a lubricated air supply is to be used.

2. Connect a suitable hose to the
tool as shown using the airline
connector supplied with the tool.

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

• A mini oiler helps to prolong the

life of the air tool. Remove the
oil fill screw from the side of the
mini oiler and fill with air-line oil

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available from your CLARKE dealer. Replace the screw before using
the tool.

4. 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 inlet strainer or via the hose at
the nearest connection to the air supply.

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

6. Turn on the air supply and check for air leaks. Rectify any found before
proceeding. PTFE tape may be useful for sealing threaded connections.

7. Your air tool is now ready for use.

• You can fit a whip hose with a quick fit coupling if required

(available from your Clarke dealer.)

OPERATING

ADJUSTING THE SPEED

1. Squeeze the trigger against the
body of the tool to start the
sander and control the speed.
Evaluate the speed and adjust as
follows.

2. Adjust the operating speed by
twisting the speed control shown.

• The speed of rotation is shown

by the arrow embossed on the
tool body (anti-clockwise will
increase the sanding speed.)

3. To begin work, rest the disc pad on the workpiece and start the sander.

• Let the tool do the work. The actual weight of the machine is

normally sufficient for efficient sanding. Do not put additional
pressure on the machine, which would only slow down the speed of
the pad, reducing efficiency and placing an additional burden on
the motor.

4. Pass the sander back and forth in wide, overlapping areas, taking care to
keep the sander moving around at all times. Avoid dwelling in one place
for more than a moment.

5. Release the trigger to stop the tool.

6. Always ensure the tool has stopped before putting it down.

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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.

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 in­line mini oiler is not used, this procedure should be repeated after every
two to three hours of use.

WEEKLY

1. Check the air inlet screen filter for
blockage and clean if necessary.

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 or oil, or failing this, the tool should be
disassembled, thoroughly cleaned, dried and reassembled. This is better
left to your Clarke dealer.

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

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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.

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.

STORAGE

When not in use, disconnect from air supply, clean & store in a safe, dry place.
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.

ACCESSORIES

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.

ABRASIVE DISCS

Replacement abrasive discs (self adhesive - 6” (150mm) dia) are available
from your CLARKE dealer:

Fine Part no. 6502097

Medium Part no. 6500809

Coarse Part no. 6502102

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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.

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.

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.

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

damaged or ill-fitting
in seat.

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1. Return to Clarke dealer
for repair.

PARTS LIST

No Description No Description

1 Housing 29 Front/end cover

2 Housing Cover 30 Cylinder

3Top Cover 31Set pin

4 Soft Grip - Front 32 O-Ring

5 Soft Grip - Rear 33 Rotor

6 Spring 34 Rotor Blade

7 O-Ring 35 Drive Spindle

8 Valve Stem 36 Woodruff Key

9 O-Ring 37 Gasket

10 O-Ring 38 Front Cover

11 O-Ring 39 Set Screw

12 Valve Seat 40 Set Screw

13 Trigger Seat 41 Washer

14 Screw 42 Eccentric Drive Cam

15 Nut 43 Screw

16 Trigger 44 Set Screw

17 Washer 45 Set Screw

18 Nut 46 Washer

19 O-Ring 47 Bearing

20 Air Regulator 48 Washer

21 Air Regulating Knob 49 Circlip

22 Screw 50 Set Plate

23 O-Ring 51 Bearing Seat

24 Air Inlet 52 Washer

25 Washer 53 Spacer

26 Screw 54 Screw

27 Circlip 55 Sanding Pad

28 Bearing

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PARTS DIAGRAM

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SPECIFICATION

Model Number CAT136

Part Number 3120150

Min. Hose Size (ID) 1/4” BSP

Max Operating Pressure 90 psi (6.2 bar)

Air Consumption 14 cfm (max) / average 5 cfm

Max No Load Speed 10,000 rpm @ 90psi

Air Inlet Size 1/4“BSP

Sound Pressure Level (LpA dB) 87 dB(A)

Sound Power Level (LwA dB) 98 dB(A)

Uncertainty Factor 3 dB

Vibration Levels

8.5 m/s

2

(uncertainty factor K= 1.5 m/s

2)

Weight 1.8 kg

Sanding Disc Size 150 mm

Disc Backing Type Adhesive

Please note that the details and specifications contained herein are correct
at the time of going to print. However Clarke International reserve the right to
change specifications at any time without prior notice.

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DECLARATION OF CONFORMITY

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