Universal Air Tools UT8764 User Manual
Operator Instructions
t
T
Includes - Foreseen Use, Work Stations, Putting Into Service,
Operating, Dismantling, Assembly and Safety Rules
Important
Read these instructions carefully before insta lling, operating,
servicing or repairing this tool. Keep these instructions in a safe
accessible place.
Manufacturer/Supplier Product Type
Universal Air Tool Company Limited
10mm Belt Sander
Unit 8
Lane End Industrial Park
High Wycombe
Bucks
Model No/Nos Serial No (if any)
UT8764
HP14 3BY
Tel No Fax No
(01494) 883300 (01494) 883237
RPM
15,000
Cycles Per Min
Product Nett Weight
1.98
0.9 3/8 10 30 10
Recommended Working
Recommended Minimum
Maximum
Use - Safety Glasses
Use - Safety Gloves
Use - Safety Boots
Use - Breathing Masks
lbs
Kg
Air Pressure
Perso n a l Sa fe t y E q ui pm en t
Recommended Use Of
Balancer Or Support
No
6.3
bar
90
PSI
n/a
7.0
bar
bar
Yes
Yes
n/a
100
PSI
PSI
Recommended Hose Bore
Size - Minimum
Ins M/M Ft M
Noise Level
Sound Pressure Level 85.0 dB(A)
Sound Power Level 96.0 dB(A)
Test Method
Tested in accordance with Pneurop
est code PN8NTC1 and ISO Standard 3744
Vibration Level
Test Method
Less than 2.5
ested in accordance with ISO
standard 8662/1
Recommended Max.
Use - Ear Protectors
Foreseen Use of the Tool
The tool is designed for the purpose of cleaning or sanding of
materials using a continuous abrasive belt. Belts are available in
various grades to suit fine finishing or fast material removal.
Do not use the tool for any other purpose than that for which it
was designed. Do not modify this tool for any other use or for
its use as a belt sander without first consulting the manufacturer
or the manufacturer’s authorised distributor.
Work Stations
The tool should only be used as a hand held hand operated tool.
It is always recommended that the tool is 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 the safety rules to be obeyed
when using the sander.
rating an easy to reach and operate air shut off valve. The air
supply should be lubricated. It is strongly rec om mended 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, depressuris-
ing 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 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 bar.
Hose Length
Metres / Sec²
Putting Into Service
Air Supply
Use a clean lubricated air supply that
will give a measured air pressure at
th e to ol of 90 p.s.i ./6 .3 ba r wh en
the tool is running with the trigger/
lever fully depressed. Use recom-
mended h ose size a nd length. It is
recommended that the tool is con-
nected to the air supply as shown in
figure 1. Do not connect the tool to
the air line system without incorpo-
Page No 1
Operating
Select a suitable abrasive belt of the required grade to achieve
a fine sanded finish or high metal removal. The belt size for this
tool is 10 mm wide x 330 circumference (continuous belt) and
is available in various grades, the lowest is grade 40 grit which
is coarse for high material removal and grits are available as 40,
50, 60, 80, 100 and 120. The coarseness of the grit decreases
as the grade number increases, hence 40 is coarse and 120
very fine.
To fit a belt, press down the stopper and push the idle pulley
towards the tool until the stopper clicks into place which
releases the tension and holds the tension off the belt. Fit the
belt ensuring that it sits centrally on the drive pulley and the idle
pulley. Rele ase the stopper to tighten th e belt. Start the tool
slowly and use the adjusting screw(33) to align the belt centrally.
Apply the sander lightly to the work and allow the belt to cut.
Take great care when sanding around sharp edges and corners
to avoid snagging and belt damage or breakage. It is always
recommended to use safety glasses and a breathing mask. The
sanding of certain materials may create a hazardous dust which
may require special breathing equipment. Check before using
the tool.
Even if the tool has a low noise level, the actual sanding process
may create a noise such that hearing protectors should be worn.
If there a re sharp edges on th e material being sa nded then
safety gloves are recommended.
Do not continue to use belts that are clogged or worn as this
will make the sanding process inefficient and the need to apply
unnecessarily high loads to the tool.
Only use belts of the dimensions specified. To use an incorrect
belt will either cause it to break or fly off. Both occurrences
could be dangerous.
Dismantling & Assembly Instructions
Disconnect tool from air supply
Press down stopper (28) to reduce tension on abrasive belt and
push on idle pulley (41) to remove abrasive belt. Remove screw
(33) and take off shoe (32). Tap out pulley pin (43) and this will
release idle pulley assembly. Tap out 2 off bearings (42) from
idle pulley (41).
Prise out pulley cap (25) and pull out apron (27). Uns crew screw
(33), drive out pin (37) and remove adjust arm (38) and spring
(39). Drive out stopper pin (36) and pull out tension arm (35)
and spring (34). Drive out pin (30) and take off stopper (28) and
spring (2).
Insert a rod in the hole in drive pulley (22) to prevent rotation and
remove nut (24) and washe r (23). Tak e off drive pulley (22).
Take out adjust screw (31) to be able to remove wheel cover
(26).
Unscrew inlet bushing (11) and take out deflector (10). Drive out
lever pin (9) and remove throttle lever (8).
Unscrew motor nut (12) from motor housing (1) with o-ring (13).
Tap ca refully [so as not to damage the thread] rotor (17) to
remove the motor assembly from motor housing (1). Note how
drive pulley (22) locates on pin (19) in rotor (17). Pin (19) can be
taken out of rotor (17). When re moving the motor asse mbly
note how pin (44) in cylinder (16) locates the motor assembly in
the groove in motor housing (1) and is located at the rear plate
(15) end. Hold motor assembly and again tap the threaded end
of rotor (17) to drive rotor (17) through front plate (20) and
bearing (21) ass embly. Tap out bearing (21) from front plate
(20). Take off cylinder (16) and 4 off rotor blades (18). Support
the rear end plate (15) in a piece of tube just slightly larger than
the maximum diameter of the rotor and tap the non threaded
end of the rotor (17) to drive the rotor (17) through the rear end
plate (15) and bearing (14) assembly. Tap out bearing (14) from
rear end plate (15). Unscrew valve body (7) and take out o-rings
(6) and (5), valve stem (4) with o-ring (3) and spring (2).
Reassembly
Clean al l par t s and examine for we ar , p a rt i c ul a rly o-rings ,
bearings and rotor blades. Use only distributor or manufacturer
supplied spare parts. Pack all bearings with a general purpose
grease and reassemble in the reverse order. Refit belt and adjust
alignment using screw (33).
Safety Rules For A Sander
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 maximu m working air pressure.
3) Use personal safety equipment.
4) Use only compressed air at the recomme nded conditions.
5) I f the too l appea rs to mal functio n remove f rom 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 u sing the tool a dopt 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, w ire, etc. the on/off va lve in the run
position. The trigger/lever etc. must always be free to return to
the ‘off’ position when it is released.
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 observ e all r ele va nt lega l requ irem ents wh e n in st alling,
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.
Page No 2
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