Universal Air Tools UT8777 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
(01494) 883300 (01494) 883237
Read these instructions carefully before installing, operating, servicing or repairing this tool. Keep these instructions in a safe accessible place.
Right Angle Paint Surfacing Tool
Model No/Nos Serial No
UT8777
RPM
25,000
Cycles Per Min
Product Nett Weight
1.32
0.60 3/8 10 30 10
lbs Kg
Air Pressure
Recommended Working 6.3 bar 90 PSI
Recommended Minimum n/a bar n/a PSI
Maximum 7 bar 100 PSI
Personal Safety Equipment Use - Safety Glasses Yes Use - Safety Gloves Yes Use - Safety Boots
Balancer Or Support
No
Recommended Hose Bore
Size - Minimum
Ins M/M Ft M
Noise Level Sound Pressure Level 84.7 dB(A)
Sound Power Level 95.6 dB(A)
Test Method Tested in accordance with Pneurop test code PN8NTC1 and ISO Standard 3744
Vibration Level
Less than 2.5
Test Method Tested in accordance with ISO standard 8662 Parts 1 & 8
Recommended Max.
Metres / Sec²
Use - Breathing Masks Yes Use - Ear Protectors Yes
Foreseen Use of Tool
This tool is designed for the purpose of light surface finishing/preparation. It is particularly useful for the preparation of painted surfaces. It can be used with bristle discs or with coated abrasive disc pads. Do not use the tool for any other purpose than that for which it has been designed before first seeking advice from the manufacturer or an authorised representative. Do not modify the tool for any other or its use as a paint surfacing tool unless first discussing and having approval for any modification from the manufacturer or an authorised distributor.
Work Stations
The tool should only be used as a handheld hand operated tool. It is always recommended that the tool is used when standing on the 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 extra safety precautions that must be observed when using Grind­ing Machines.
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 lever/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 lever/trigger on the tool. Disconnect the air line and pour into the intake bushing a teaspoonful (5ml) of a suitable pneumatic motor
Hose Length
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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./7.0 bar. If tool is used daily then every other day grease gears (27) & (32) via grease plug (40).
Operating
The tool can be fitted with conventional coated abrasive discs or abrasive discs that are suitable for surface preparation, particularly paint surfaces, where paint surfaces may be cleaned, surfaced or paint runs or uneven patches removed or smoothed. Three types of abrasive discs are available for the tool. The disc coloured green is grade 50, yellow is grade 80 and white is grade 120 where the lower number grade, i.e. 50 is for fast material removal and 120 is for smoother, finer finish. Select disc as required and grip disc holder (25) and screw on disc (26) tightly by hand. Do not overload the tool and let the abrasive work. If required the speed and power of the tool may be reduced by turning air controller (9) with a screwdriver. As it is possible that during use small pieces of the disc may break off and dust may be created, it is important to wear personal protection. Always use protective glasses and or face shields. Use also protective aprons, gloves and dust extraction systems as appropriate.
5) Use only correct spare parts.
6) Check hose and fittings regularly for wear. Do not carry the tool by its hose.
7) Do not remove and never tie down the safety lever.
8) Never exceed the maximum air pressure and check the free running speed frequently. Have air regulator fully open.
9) Use safety equipment as recommended.
10) Take care against entanglement of moving parts of the tool with clothing, ties, hair, cleaning rags, etc.
11) Use only compressed air at the recommended pressure.
12) Do not attempt to fit any other attachment than those recommended - see “Foreseen Use of Tool”
13) If the tool appears to malfunction remove from use immediately and arrange for service and repair.
Dismantling & Assembly Instructions
Disconnect the tool from the air supply. If fitted first remove exhaust and inlet hose assemblies. Grip disc holder (25) and unscrew and remove attachment (26) as fitted. Grip housing (3) in a vice fitted with soft jaws and unscrew air inlet with screen (28) and pull out exhaust sleeve (27) with O-Ring (29). Drive out spring pin (2) and take off safety lever (1). With a wide bladed screwdriver unscrew valve screw (12) with O-ring (11) and take out air controller(9), O-ring (10), valve spring (8), valve stem (6) and O-rings (5) & (7). Do not press out valve bushing (4) from housing (3) unless a replacement is required. Unscrew lock ring (24) from housing (3) and pull out disc holder (25) with the complete motor assembly from housing (3). Grip rear end plate (14) and tap the non threaded end of rotor (17) to drive rotor (17) through rear end plate (14) assembly. Take off cylinder (16) noting how pins (15) located in rear end plate (14) and front end plate (21) locate the cylinder to the end plates via the narrow length wise slot in cylinder (16). Take out 4 off rotor blades (18) from rotor (17). Carefully grip rotor (17) and unscrew disc holder (25). Pull off front end plate(21) assembly with collar (19) and steel plate (20) from rotor (17). Tap out bearing (22) from front end plate (21).
Reassembly
Clean all parts and examine for damage and wear. Replace any parts with parts obtained from the manufacturer or an authorised distributor. Assemble in the reverse order.
Safety Rules When Using A Paint Surfacing Tool
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) Always select suitable abrasive to use with this tool - see Operating Instructions.
3) Always shut off the air supply to the tool and depress the lever to exhaust air from the feed hose before fitting, adjusting or removing the mounted point.
4) Always adopt a firm footing and/or position before using the tool.
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