Clarke CAT84 Troubleshooting guide

DESCALING KIT
OPERATION & MAINTENANCE
INSTRUCTIONS
0502
DESCALING KIT
MODEL NO: CAT84
PART No: 3110820

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. Always consult the machines data plate
Fig.1
SPECIFICATIONS
Model : ......................................................................... CAT 84
Part No : ..................................................................... 3110820
Maximum Air Consumption : ...................................... 4 CFM
Recommended Air Pressure :........................90 PSI (6.2bar)
Air Inlet Size : .............................................................. 1/4” BSP
Minimum Hose Size : ..................................... 5/16” (8mm) ID
Weight : .......................................................................... 2.2 kg
Blows Per Minute : ........................................ 4,500 (@6.2bar)
Piston Stroke : .............................................. 41 mm (1 - 5/8”)

CLARKE GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period
of 12 months from the date of purchase. Please keep your receipt 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 affect your statutory rights.
Please read these instructions carefully before operating the tool
Thank you for purchasing this CLARKE Air Descaling Kit
Before using the device, please read this manual thoroughly and carefully follow
all instructions given. This is for your own safety and that of others around you,
and is also to helpyou achieve long and trouble free service from your new tool.
ACCESSORIES
A wide range of Airline accessories is available, including Filter/Regulators, Lubricators, High
Pressure Hoses from 5 to 100 Metres, etc. Contact your CLARKE dealer for further information,
or CLARKE International Sales Department on 01992 565300

SAFETY PRECAUTIONS
IMPORTANT
Failure to follow these precautions could
result in personal injury, and/or damage to
property.
❐When operating this tool, ALWAYS wear:
a. approved impact resistant SAFETY
GOGGLES. (Eye glasses are NOT
safety glasses)
b. a DUST MASK
c. EAR DEFENDERS
d. a good pair of INDUSTRIAL GLOVES
❐ALWAYS disconnect the tool when not
in use, and before carrying out any
maintenance
❐ALWAYS keep a safe distance between
yourself and other people when using
the tool.
❐ALWAYS maintain the tool with care.Keep
it clean for best and safest performance.
❐NEVER wear ill fitting clothing, remove
watches and rings.
❐Quick change couplings should not be
located at the tool. They add weight
and could fail due to vibration.
❐DO NOT over-reach. Keep your proper
footing and balance at all times.
❐DO NOT force or misuse the tool. It will
do a better and safer job at the rate for
which it was designed.
❐DO NOT abuse hoses or connectors.
NEVER carry a tool by the hose, or yank
it to disconnect from the air supply. Keep
hoses away from heat, oil and sharp
edges. Check hoses for leaks or worn
condition before use, and ensure that
all connections are secure.
❐DO NOT exceed 90 PSI at the tool.
❐DO NOT modify the tool in any way.
❐DO NOT remove any labels. Damaged
labels should be replaced.
❐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.
❐ALWAYS use screens to protect people
in the vicinity from flying debris.
❐NEVER point the tool at anyone.
WARNING
Compressed air can be
dangerous. Ensure that you are
thoroughly familiar with all
precautions relating to the use
of compressors and
compressed air supply.
AIR SUPPLY
Tools of this type, operate on a wide range
of air pressures. It is recommended that air
pressure to this tool does not exceed 90 PSI
(6.1bar), at the tool when running. Higher
pressure and unclean air, will shorten the tools’
life because of faster wear, and could be a
safety hazard.
Water in the air line will cause damage to
the tool, ensure it is properly maintained at
all times.
The recommended procedure to connect
this tool to an air supply, is shown at fig. 1 on
inside front cover.
The air inlet used for connecting air supply,
has a standard ¼” BSP thread.
Line pressure, or hose inside diameter, should
be increased to compensate for unusually
long air hoses (over 10m). Minimum hose
diameter should be 6mm (¼") ID., and fittings
should have the same inside dimensions.
ASSEMBLY
Connect a suitable hose to the Descaler using
a ¼” hose adapter, (A whip hose with Quick
Fit coupling is available from your CLARKE
dealer).then connect the other end to the
airline.
NOTE: ensure the airline is turned off.
Your Descaler is now ready for use.

Before starting work drain any water from the
air tank and blow condensation from the air
line. Drain compressor more frequently in hot
humid weather.
Kit Contents
1. The Main Body inc Hammer assy.
2. The Needle Holder, complete.
3. Three Chisels with Spring Retainer.
Depending on the work to be carried out,
choose either Needles or Chisel.
WARNING
Always ensure air is turned off before
installing or removing tools etc.
To install the Needle Tube, complete with
Needles. P ush the assy on to the nose of the
tool, and screw in fully, (HAND TIGHT ONLY).
To install a Chisel, unscrew the Needle Tube
assy, if fitted, and insert Chisel into the hole in
the end of the nose of the tool.
OPERATING INSTRUCTIONS
MAINTENANCE
Daily before use.
1. Drain water from air tank, air line and
compressor.
2. Check and clean, if necessary, the air
inlet gauze filter .
3. Pour a few drops of CLARKE Air Line Oil
(approx 3cc), into the air inlet. This should
be carried out regardless of whether or
not an air line lubricator is used.
If an Air line lubricator is NOT used, this
procedure should be repeated after
every two to three hours of use.
If the Descaler 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.
For lubricating the air motor when in
operation, an air line lubricator should be
used, with Clarke Air Line Oil, adjusted to 2
drops per minute.
Clarke Air Line Oil is available from your
CLARKE dealer, part no. 3050825.
Be aware 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
line, or the use of connectors of improper size
or poor condition which will reduce air supply.
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 dis-assembled,
thoroughly cleaned, dried and re-assembled.
If the tool runs erratically or becomes
inefficient, and the air supply is sound,
dismantle the air motor and replace worn or
damaged parts, or take the tool to your
CLARKE dealer.
Once the appropriate tool is fitted, you are
ready to start.
Turn ON the air supply, and check for air leaks,
if any are apparent, rectify before
proceeding. Ensure the air pressure is set to
90 PSI (6.2bar).
Hold the tool with one hand around the
handle and the other around the barrel, bring
the tool towards the work at an angle of
approx, 60 - 70º. Depress the trigger and allow
the Needles/Chisel to come into contact with
the work.
Needle/Chisel force can be adjusted by
turning the regulator knob, located at the
base of the handle grip.
To increase force, turn reg clockwise and
anticlockwise to reduce.
Place the Spring
retainer over the
Chisel and screw on
to the nose fully,
using the
appropriate lug,
(See Fig. 1). Fig. 1
moving slowly across work surface, proceed
to remove scale, rust or other contaminants.
Release the trigger to stop operation, noting
that the tool may impact briefly after the
trigger is released.

PARTS DIAGRAM
PARTS LIST
Index Part Description Index Part Description
No. No. Qty No. No. Qty
1 KLAH01 Handle 1 10 KLAH10 Upper Valve Case 1
2 KLAH02 Pin 1 11 KLAH11 Valve Disk 1
3 KLAH03 Regulator 1 12 KLAH12 Lower Valve Case 1
4 KLAH04 Hose Adapter 1 13 KLAH13 Valve Pin 2
5 KLAH05 Throttle Spring 1 14 KLAH14 Piston 1
6 KLAH06 ‘O’ Ring 1 15 KLAH15 Cylinder 1
7 KLAH07 Push Rod 1 16 KLAH16 Spring Retainer 1
8 KLAH08 Trigger 1 17 KLAH17 Needle Scaler Attach’t 1
9 KLAH09 Steel Ball 1 18 KLAH18 Chisel Set 1
PARTS & SERVICE TEL: [phone]
or e-mail as follows:
PARTS: [email protected]
SERVICE: [email protected]
IMPORTANT:
The use of parts other than CLARKE replacement parts may result in safety hazards,
decreased tool performance and may invalidate your warranty.