Universal Air Tools UT4X User Manual

Operator Instructions Important

Includes - Foreseen Use, Work Stations, Putting Into Service, Operating,
Dismantling, Assembly and Safety Rules

Manufacturer/Supplier Product Type

Universal Air Tool Company Limited
Unit 8
Lane End Industrial Park
High Wycombe
Bucks
HP14 3BY

Tel No Fax No[phone] [phone]

Read these instructions carefully before installing, operating,
servicing or repairing this tool. Keep these instructions in a safe
accessible place.

0.401 Shank Air
Hammers

Model No/Nos Serial No

UT2X (2X), UT3X (3X) &
UT4X (4X)

Product Nett Weight

(See Page 4)

lbs
Kg

Recommended Use Of

Balancer Or Support

No

Air Pressure
Recommended Working
Recommended Minimum
Maximum

6.3
n/a

7.0

bar
bar
bar

90

n/a

100

Personal Safety Equipment

Use - Safety Glasses
Use - Safety Gloves

Yes
Yes

Use - Safety Boots
Use - Breathing Masks
Use - Ear Protectors

Yes

Foreseen Use of the Tool

These tools are designed for the purpose of chipping, riveting and
scaling of metals and stone. In general terms a reciprocating free
piston in the cylinder of the tool imparts a blow to the chisel or
working attachment. A list of suitable equipment to use with these
tools can be provided by the manufacturer. Do not use these tools for
any other purpose than that for which they were designed without
consulting the manufacturer or the manufacturer’s authorised
representative.
Do not modify these tools for their use as a chipper etc. or for any
other purpose without first agreeing any such modification with the
manufacturer or the manufacturer’s authorised representative.

Work Stations

These tools should only be used as handheld, hand operated tools. It
is always recom­mended that the
tools are used when
standing on a solid
floor. It can be used
in other positions
but before any such
use, the operator
must be in a secure
position having a
firm grip and footing
and be aware of a
reaction force on
the hand as result of
the tool doing work.

Recommended Hose Bore

Size - Minimum

Ins M/M Ft M

3/8 10 30 10

Recommended Max.

Hose Length

Noise Level Sound Pressure Level (See Page 4)

PSI

Test Method Tested in accordance with Pneurop

PSI

test code PN8NTC1 and ISO Standard 3744

Sound Power Level (See Page 4)

PSI

Vibration Level

(See Page 4)

Test Method Tested in accordance with ISO
standards 8662/1 Parts 1 & 2

Putting Into Service

Air Supply

Use a clean lubricated air supply that will give a measured air pressure
at the tool of 90 p.s.i./6.3 bar when the tool is running with the trigger
fully depressed. Use recommended hose size and length. It is
recommended that the tool is connected to the air supply as shown
in figure 1. Do not connect the tool to the air line system without
incorporating an easy to reach and operate air shut off valve. The air
supply should be lubricated. It is strongly recommended that an air
filter, regulator, lubricator (FRL) is used as shown in Figure 1 as this will
supply clean, lubricated air at the correct pressure to the tool. Details
of such equipment can be obtained from your supplier. If such
equipment is not used then the tool should be lubricated by shutting
off the air supply to the tool, depressurising the line by pressing the
trigger on the tool. Disconnect the air line and pour into the intake
bushing a teaspoonful (5ml) of a suitable pneumatic motor lubricating

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oil preferably incorporating a rust inhibitor. Reconnect tool to air
supply and run tool slowly for a few seconds to allow air to circulate
the oil. If tool is used frequently lubricate on daily basis and if tool starts
to slow or lose power.
It is recommended that the air pressure at the tool whilst the tool is
running is 90 p.s.i./6.3 bar. The tool can run at lower and higher
pressures with the maximum permitted working air pressure of 100
p.s.i./7.0 bar.

Operating

Connect tool to clean supply of compressed air at recommended
pressure. Select chisel/attachment to perform the work task and
ensure that the chisel retainer is securely fitted. Do not use tool
without retainer fitted. The power of the tool may be controlled by the
input air pressure. Always ensure that the working tool is in contact
with the workpiece before pressing the trigger. Running the tool free
will reduce tool life by placing unnecessary high loads on tool retainers
and cylinders.

Dismantling & Assembly Instructions

Disconnect tool from air supply
Grip handle (1) in a vice with soft jaws and unscrew either retainer
spring (21) or beehive spring (22). Spring off exhaust cover (20) and
remove stopper pin (19). This will allow cylinder (2) to be unscrewed
from handle (1). Remove piston (3) from cylinder (2). The valve
assembly comprising of valve box (5), valve (6), valve seat (8) and pin
(7) can be removed from the end of the cylinder and separated, but
carefully note the orientation of the parts to the cylinder (2) for
reassembly. Drive out lever roller pin (15) and handle knock pin (16)
and unscrew inlet bushing (10) and plug (14) to allow lever (18),
assistant lever (17), valve stem(11), O-ring (12) and spring (13) to be
removed from the handle (1). Do not remove throttle bush (9) from
handle (1) unless a replacement is required.

Reassembly

Clean all parts and examine for wear. Replace any worn or damaged
components with parts supplied by the manufacturer or an authorised
representative. Coat all parts with a pneumatic tool lubricating oil, one
preferably containing a rust inhibitor. Ensure correct location of valve
parts to cylinder and tighten cylinder until the stopper pin (19) can be
located in one of the slots in the handle (1) which mates with one of
the holes in cylinder (2). Assemble all other parts in the reverse order.

12) Always shut off the air supply to the tool, and depress the
trigger/lever etc. to exhaust air from the feed hose before fitting,
adjusting or removing the working attachment.

13) Check hose and fittings regularly for wear. Replace if necessary.
Do not carry the tool by its hose and ensure the hand is remote from
the on/off control when carrying the tool with the air supply connected.

14) Take care against entanglement of moving parts of the tool with
clothing, ties, hair, cleaning rags, etc. This will cause the body to be
drawn towards the tool and can be very dangerous.

15) It is expected that users will adopt safe working practices and
observe all relevant legal requirements when installing, using or
maintaining the tool.

16) Do not install the tool unless an easily accessible and easily
operable on/off valve is incorporated in the air supply.

17) Take care that the tool exhaust air does not cause a problem or
blows on another person.

18) Never lay a tool down unless the working attachment has
stopped moving.

19) Never point a tool at any person.

20) Use only suitable pneumatic tool lubricants. This is important as a
safeguard against the “diesel effect” i.e. explosive mixtures firing.

21) Chisels worn/blunt at the cutting edge or shank should not be
used as such conditions promote tool breakage, reduce efficiency
and increase vibration. A chisel which breaks can cause injury by
creating unexpected movement.

22) When chipping or scaling in potentially explosive atmospheres
use spark resistant chisels usually made of beryllium copper. Consult
the manufacturer of the tool standard chisels about sources of supply.

23) Do not store chisels etc. at freezing and below freezing
temperatures. Freezing temperatures can make hardened-tool steels
brittle which can cause breakage and lead to injury.

24) Do not start tool until steel/chisel/rivet snap are in contact with
the working surface. Do not run tool unless retainer is fitted.

25) Always use tool with a whip hose as shown in fig 1.

26) Don’t over reach. Keep proper footing and balance at all times.

27) Do not force the tool but allow it to cut.

28) When possible secure work with clamps or vice so both hands
are free to operate the tool.

29) Use only 0.401” diameter shank size chisels or adaptors.

30) Prolonged exposure to vibration may cause injury.

Safety Rules For A Percussive Air
Hammer

1) Read all the instructions before using this tool. All operators must be
fully trained in its use and aware of these safety rules.

2) Do not exceed the maximum working air pressure.

3) Use personal safety equipment.

4) Use only compressed air at the recommended conditions.

5) If the tool appears to malfunction remove from use immediately
and arrange for service and repair.

6) If the tool is used with a balancer or other support device ensure
that it is fixed securely.

7) Always keep hands away from the working attachment fitted to the
tool.

8) The tool is not electrically insulated. Never use the tool if there is any
chance of it coming into contact with live electricity.

9) Always when using the tool adopt a firm footing and/or position
and grip the tool firmly to be able to counteract any forces or reaction
forces that may be generated whilst using the tool.

10) Use only correct spare parts. Do not improvise or make
temporary repairs.

11) Do not lock, tape, wire, etc. the on/off valve in the run position.
The trigger/lever etc. must always be free to return to the 'off' position
when it is released.

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