Universal Air Tools UT8795-DC User Manual

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

ImportantOperator Instructions

Includes - Foreseen Use, Work Stations, Putting Into Service, Operating,

Pad Size 180mm x 110mm

Tel No

[phone]

Test Method

Tested in accordance with Pneurop

test code PN8NTC1 and ISO Standard 3744

Vibration Level

Test Method

Tested in accordance with ISO

Less than 2.5

Dismantling, Assembly and Safety Rules

accessible place.

Manufacturer/Supplier Product Type

Universal Air Tool Company Limited

Orbital Block Sander

Unit 8
Lane End Industrial Park
High Wycombe
Bucks
HP14 3BY

Fax No

[phone]

Product Nett Weight Recommended Use Of

UT8795 UT8795-DC

2.64 2.70 lbs

1.20 1.23 Kg

Air Pressure
Recommended Working
Recommended Minimum
Maximum

Personal Safety Equipment
Use - Safety Glasses
Use - Safety Gloves
Use - Safety Boots
Use - Breathing Masks
Use - Ear Protectors

Balancer Or Support

No

bar

6.3
n/a

7.0

bar
bar

90

n/a

100

Yes

Yes

Model No/Nos Serial No

UT8795
UT8795-DC Central Vac

Recommended Hose Bore

Size - Minimum

3/8 10 30 10

Noise Level

PSI
PSI
PSI

standards 8662 Parts 1 & 8

RPM

8,500

Cycles Per Min

Recommended Max.

Hose Length

Ins M/M Ft M

Sound Pressure Level 80.0 dB(A)

Metres / Sec²

Foreseen Use of the Tool

This tool is designed for the purpose of cleaning or sanding a variety of
basically flat materials. The orbital action reduces the amount of
abrasive grinding marks and hence is primarily a finishing sanding tool. It
can be used with a variety of grades of abrasive paper which is held in
position by two clamps. The tool has alternative velcro fastening which
does not require use of the paper clamps.
It can be used in conjunction with water if this is a requirement for
improved finishing, to reduce dust or with wet/dry abrasive paper. Do
not use the tool for any other purpose than that for which it was
designed. Do not modify the tool for any other use or for its use as a
sander without first consulting the manufacturer.

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.

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.
when the tool is running with the lever 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 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 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. The tool can run at lower and higher pressures with
the maximum permitted working air pressure of 100 p.s.i.

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Operating

Select a suitable abrasive sheet (see Section "Foreseen use of the tool")
and make sure that it is fixed securely to the tool. Connect to suitable air
supply as recommended.
Apply the sander lightly to the work and allow the abrasive disc to cut.
Take great care when sanding around sharp edges and surfaces to
avoid the disc snagging i.e. the disc may be brought to an abrupt stop or
considerably slowed that will cause the tool to kick in the hands.
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 machine has a low noise level the actual sanding process
may cause a noise level such that ear protectors will be required. If there
are sharp areas on the material being sanded safety gloves are
recommended.
Do not continue to use abrasive sheets that are worn or clogged. This
will make the sanding process inefficient and the need to apply
unnecessarily high forces to the tool.
Do not use undersized or oversized sanding sheets.

Dismantling & Assembly Instructions

Disconnect the tool air supply
Remove abrasive paper. Take out screws (39 & 40). This will allow you
to take off the pad seat (37) and pad (38). Take off skirt band (35). After
doing this you can remove the skirt (36) from the housing cover (30).
Remove screws (31). This will allow you to pull out the motor assembly
and dismantle the rest of the motor. Take off snap ring (18) and tap out
the rotor (22) from the cylinder (24) and remove rotor vanes (21). Then
pull out bearings (19 & 29) from motor shaft balancer (28).

Reassembly

Clean all parts and examine for wear. Coat all metal parts in a pneumatic
tool lubricating oil, one preferably incorporating a rust inhibitor, and
grease all bearings with a molybdenum or lithium based general
purpose grease. Reassemble in the reverse order.

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) Always check the speed of the attachment is higher than the speed
of the tool.

20) Check speed of tool at regular intervals.

21) Check always that the material to be sanded may not cause a risk by
being sanded, i.e. fire or explosion.

22) If self fixing discs are used, i.e. self adhesive or Velcro, always ensure
the disc is fixed centrally to the pad.

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

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