Universal Air Tools UT5765 - Manual (Page 2)

Page No 2
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 20 mm wide x 525 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 tension bar and push the idle pulley
towards the tool until the tension bar 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. Release the tension bar to tighten the belt. Start the tool
slowly and use the adjusting screw (2A) 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 are sharp edges on the material being sanded 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 on belt at idle pulley (2) position towards tool and idle
pulley bracket (1) will click into a holding position taking the
tension off of the belt to allow the belt to be taken off. Note that
a new belt is fitted in a similar way and tension bar (14) is
pressed after the belt has been fitted to tension the belt. With a
screwdriver located in the idle pulley assembly (2) unscrew nut.
Unscrew hexagon socket head bolt (2A). Remove finger pad
assembly (4) by removing holding cap screw. Remove hexagon
socket head bolt (6) and take off flat shoe (10). Remove key bolt
(5) and drive out lever pins (16) and (17) and take out tension
bar (14) and spring (15). Pull out idle pulley bracket (1) and
spring (3). Grip drive pulley (9) and unscrew bolt (8) with washer
(8A) and prise off drive pulley (9) with key (22).Pull out dust
cover (12). Unscrew bolt (11) and slide off guard body (13). Grip
housing (18) and unscrew cap (23). Tap the end of rotor (28) to
drive the complete motor assembly out of the end of housing
(18). Grip end plate (20) and insert a punch into the threaded
hole in rotor (28) and tap the punch to drive the rotor (28)
through end plate assembly (20). Take off cylinder (26), spacer
(21) and 5 off rotor blades (27) (one set) from rotor (28). Locate
end plate (25) on the cylinder side and tap the end of the rotor
to drive it though end plate (25) assembly. Tap out bearing (19)
from end plate (20) and bearing (24) from end plate (25). Drive
out pin (30) and remove lever (29). Unscrew air inlet with screen
(39) and take off deflector (38). Unscrew valve body (31) and
take out O-rings (32) (33) (34) and (36), valve stem (35) and
valve spring (36).
Reassembly
Clean all parts and examine for damage and wear. Replace any
part with parts obtained from the manufacturer or an approved
representative. Coat all parts with a pneumatic tool lubricating oil
and assemble in reverse order. Fit new belt - see section
Operating.
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 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.
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.
Technical Specification
Length (Folded) 340 mm (13.38")
Length (Max) 345 mm (13.58")
Height 65 mm (2.56")
Air Inlet 1/4" NPT
Air Consumption 4.0 CFM
Standard Belt Size 20 mm wide x 525 mm