Sandblaster SB20
Contents
1. Air filter on compressor plugged Compressor too small Supply valves not on full position Nozzle size too large Leaks in air lines Holes in air lines Air filter on compressor plugged Urethane gasket worn or dirty Blaster tank empty Moisture in media Not enough air pressure Abrasive hose kinked Debris in media See Lack of Air Pressure Adjust abrasive control valve Close slightly Check pressure gauge Purge amp Screen Use smaller grit size Use large nozzle or Adjust abrasive control valve Dry media drain water from air Change or use dry media Drain water from air lines Empty dry out and refill Keep media dry as possible Use drier or moisture separator Avoid that period of use if possible Restrict time used Use smaller size Seal amp tighten air lines Replace hose Clean filter Use larger compressor Open vales Use smaller size nozzle Seal amp tighten air lines Replace hose Clean filter Clean or replace gasket Fill tank Dry media Check system Straighten Clean or screen media PARTS LIST amp DIAGRAM Item Description 0001 Tank 0002 Wheels 0003 Cotter Pins 0004 Front Foot 0005 Wheel Axle 0006 Handle Bars 0007 Handle Grips 0008 Pan Screws 0009 Hex Nuts 0010 Safety Valve 0011 O Ring 0012 Tank Filler Cap 0013 Joint Pipe 0014 Intake Manifold 0015 Pressure gauge 0016 3 8 Nipple Connectors Qty nnn e A A N N lt lt RK WQ N e 10 Item2. 0017 0018 0018A 0018B 0019 0020 0021 0022 0023 0024 0029 0030 0030A 0050 0051 Description Water Trap 3 8 Brass Air Supply Valve 3 8 Brass Throttling Valve 3 8 Steel Abrasive Control Valve Inlet connector Nipple Connector Air Hose Abrasive Outlet Manifold Hose Clamps Abrasive Hose Funnel Hood Lens for Hood Washer Wheel Washer Qty Aa A N eS e 16 18 Bkk
3. To Start Abrasive Blasting Note Start with all valves in the closed position 1 With the air compressor off attach the connector to an air supply hose coming from the air compressor Tighten securely with a hose clamp Switch on power to start up the air compressor 2 Turn the air supply valve slowly clockwise to horizon position Open the throttling valve U 4 Check for leaks at the tank filler cap along all hoses and fittings as pressurization begins If leaks are observed release the pressure from the tank and repair them immediately 5 Point sandblasting gun to a safe direction away from people pets or anything around you that may be damaged by abrasive spray 6 Press and hold sandblasting gun until air is flowing though the gun 7 While pressing and holding the sandblasting gun slowly open the abrasive control valve until abrasive material begins to flow out of the sandblasting gun 8 Adjust the abrasive valve to an appropriate position about 45 when desired amount of abrasive material is flowing through the trigger nozzle 9 Begin blasting Abrasive Flow Adjustment Choose a larger nozzle for a broader spray pattern Choose a smaller nozzle for more focused abrasive blasting Adjust air pressure with the air supply valve Adjust abrasive flow with abrasive control valve Watch for abrasive clogging Depressurize if necessary and replace the abrasive with drier or cleaner abrasive To Stop Blasting 1 While
4. material by an exhausted enclosure If airline respirators and compressors are used make sure the intake hose is placed in an area that provides clean air An attendant should be in the area at all times monitoring breathing air and assuring the blaster s safety When using pneumatic equipment basic safety precautions should always be followed to reduce the risk of personal injury and hazards due to over pressurization Additional Personal Protective Equipment Blasting operations create high noise levels so hearing protection is a must for both the operator and nearby workers Operators should also wear heavy canvas or leather gloves aprons or leggings when appropriate as well as safety shoes Always wear eye protection that complies with a recognized standard CSA or ANSI when operating or performing maintenance on this tool User and bystanders QD A Y Handling and Storing Abrasive Dust is nearly always created at any point where abrasives are transferred whether by hand or shovel Therefore all points of transfer must be properly exhausted and workers who handle abrasive manually should wear particulate filter respirators SPECIFICATIONS Model SB20 I Tank Volume 20 Gallon Working Pressure 60 125 PSI SAFETY RULES 1 Keep work area clean Cluttered areas may cause injuries 2 Observe work area conditions Do not use unit in damp wet or poorly lit locations Do not expose to rain Keep work area well lit
5. your air compressor from any damage it may receive from your sandblasting work Your best option is to keep the compressor in a room separate from the sandblaster using a long hose to provide the PSI necessary to do your work A second choice is to keep the compressor up wind from the sandblasting The greater the distance between them the better Other than that you should continue standard maintenance procedures for the compressor Some parts of the sandblaster will wear out more rapidly than others The parts needing close attention carry the air abrasive mixture starting with the abrasive hose and going through the metal fittings the nozzle sandblasting gun and the nozzles If air leaks develop in any of these parts you should stop all work and find what needs to be repaired or replaced When it is new the abrasive hose has two cord piles and the wall is 1 4 thick As the interior diameter is sandblasted this wall becomes thinner and thinner One way to inspect the hose and other parts affected by the blasting is to put on protective clothing then pressurize the system and close the sandblasting gun Close your hand loosely around the hose and run it up and down the hose across the fittings and nozzles You should be able to feel any leaks You can also spot places in the hose where the wall is getting very thin These show up as blisters in the hose if you find such a blister get a new hose immediately If that blister breaks the abra
6. ASTING GUN 5 Before beginning operations go back over each connection double checking to ensure that all are tight and properly seated OPERATION Always wear a hood a dust mask and heavy duty canvas gloves when operating Abrasive Selection The kind of abrasive you choose will greatly influence the amount of time needed to clean a given surface area Abrasive materials include silicon carbide alumina and many others Be sure that the abrasive you use is thoroughly dry Damp abrasive can cause clogging of your pressure blaster While you may reuse abrasive remember that the abrasive does wear out After using abrasive will become smoother and rounder thus reducing abrasive s effectiveness Reusing abrasive may also cause clogging due to debris contained in the mixture from prior use Loading Abrasives 1 Turn the air supply valve to the OFF position 2 Watch the pressure gauge and make sure it reads the zero position 3 Remove the filler cap from the top of the tank 4 Insert the funnel and pour the abrasive into the funnel Be sure to get enough abrasive into the tank to do the job at hand But if this a big job fill the tank 3 4 full and reload as needed to finish the work 5 With the correct amount of abrasive in the tank and close the filler cap assuring that the O ring is in place WARNING Before opening the tank be sure that the tank is not pressurized and the pressure gauge reads 0
7. Do not use electrically powered air compressors in the presence of flammable gases or liquids 3 Keep children away Children must never be allowed in the work area Do not let them handle tools hoses or extensions cords No one including both users and bystanders should be in close proximity of the sandblasting area without the proper protective equipment 4 Do not use inappropriate attachments in an attempt to exceed the unit s capacities 5 Dress properly Do not wear loose clothing or jewelry as they can be caught in the moving parts Non skid footwear is recommended Always wear a hood included a dust mask and heavy duty canvas gloves 6 Use eye and ear protection Always wear ANSI approved chemical splash goggles when working with chemical Wear and ANSI approved dust mask or respirator when working around metal wood and chemical dusts and mists 7 Do not force tool Use correct tools for your application 8 Do not overreach Keep proper footing and balance at all times Do not reach over or across running machines 9 Keep machine clean for better and safer performance Follow the instructions for lubricating and changing accessories Inspect compressors cord periodically and if 3 damaged have it repaired by a qualified technician Inspect all hoses for leak prior to use The handle must be kept clean dry and free from oil and grease at all times 10 Be sure that keys and adjusting wrenches are removed from the unit o
8. LOTOS TECHNOLOGY Sandblaster SB20 I www uwelding com LOTOS TABLE OF CONTENTS SPECIFICA TIONS rics ste Sor eosca biente 3 SAFETY RULES iaia at 3 AIN Abrasive Supply Require MENiS reia ni lie 4 ASSEMBLE Y asino E aa paralisi 5 OPERA HON niea a a E E 6 ADIASIve DECON Oea a N T S T sae 6 OASES oei r e E A EEEE OE 6 To Start Abrasive Blasio sable rapallo 6 Abrasive Plow Adjusunent socie iaia ile lea I To Stop Bas UD ans adda tanuaesode een el ae ERE KER SER cala rea et 7 Fo Release Pressure mom the Tankerne eee 7 Nozzle and Rubber Nozzle Seal Replacement aaan eenen I MAINFEENANGCE sli bia olio i 8 HEFALTH CONSIDERATIONS sore lardo 8 TROUBLESHOOTING 5 ine ri 9 PARTS LIST AND DIAGRAM G GGGGsssseeeeeeees esser eres interiora 10 A WARNING Airborne Dust This is one of the most serious hazards associated with blasting operations When evaluating this hazard it is important to consider the concentration of dust and the size of particles Larger particles considered nuisance dust are normally filtered out in the nose and throat Smaller particles 10 microns or smaller can bypass the lung s filtering system and penetrate deep into the respiratory system where they may cause serious damage Safeguards are needed when smaller particles are present in the working environment Some dust created by abrasive blasting grinding and other construction activities contains chemicals known to the State of Californi
9. a to cause cancer birth defects or other reproductive harm Your risk from exposure varies depending on how often you do this work To reduce your exposure to these chemicals work in a well ventilated area and with approved safety equipment such as dust masks that are specifically designed to filter out microscopic particles Metal Dust In addition to the abrasive being used contributes to the generation of airborne dust Metals such as lead cadmium and manganese can be extremely toxic when inhaled Many existing paints are lead based Regulations require special handling trained personnel and medical monitoring when lead is present If in doubt please make sure to double check Silica Sand This product is a potentially serious health hazard and should NOT be used as an abrasive If silica containing quartz materials are selected for any reason workers must wear a positive pressure or pressure demand respirator with an assigned protection factor APF of either 1000 or 2000 Silica must be contained and disposed of properly Even if a wet blasting method is selected silica that 1s allowed to migrate by either wind or water will eventually become an airborne contaminant Air Supply Air supplied respirators must be used at all times 1 when working inside of blast cleaning rooms 2 when using portable units in areas without enclosure and 3 under any circumstances where the operator is not physically separated from the abrasive
10. continuing to press and hold the sandblasting gun turn the abrasive control valve to the closed position 2 When noticing only air is coming out of the sandblasting gun stop the air flow by releasing the gun To Release Pressure from the Tank 1 When finished blasting point sandblasting gun in a safe direction away from people pets or anything around you that may be damaged by direct or indirect abrasive spray 2 Turn the abrasive control valve to the closed position while pressing and holding the sandblasting gun to expel remaining abrasive material from the abrasive hose 3 Release pressure on the sandblasting gun 4 Close the throttling valve and the air supply valve 5 Disconnect air supply hose from abrasive blaster 6 Press the sandblasting gun until air stops flowing and pressure gauge read 0 Nozzle and Rubber Nozzle Seal Replacement 1 Disconnected air supply to sandblasting gun 2 While holding the sandblasting gun against spring pressure in the open position unthread the knurled nozzle retaining collar of the sandblasting gun and remove the retaining collar nozzle and rubber nozzle seal 3 Insert replacement nozzle into the retaining collar followed by the rubber seal then thread the knurled nozzle RUBBER SEAL ozzit gt retaining collar of the sandblasting gun KNURLED NOZZLE RETAINING onto the sandblasting gun and tighten securely MAINTENANCE l You should make every effort to protect
11. r work surface before using 11 Make sure the air pressure adjustment is set at 0 PSI and the sandblasting gun is in the off position when not in use and before attaching the air compressor 12 Do not operate the unit when tired or under the influence of alcohol or drugs 13 Check for alignment and binding of moving parts any broken parts or mounting fixtures and any other conditions that may affect proper operation before use Do not use the unit if any switch does not turn on or off properly 14 When servicing only use parts and accessories intended for use with this unit 15 Drain water trapped in the air pressure adjuster periodically 16 Do not allow pressure blaster to be pressurized while unattended or not in use 17 Make sure all equipment is rated to the appropriate capacity Make sure that regulator is set no higher than 125PSI 18 Periodically check the abrasive medium delivery equipment Valves hoses and nozzles that carry the abrasive medium after it leaves the pressure tank are subject to the abrasive blasting action and will wear out more quickly than other components 19 Release the air pressure in the tank before opening Open the sandblasting gun to release pressure Make sure pressure gauge reads 0 PSI before opening the tank Do not attempt any repairs to the pressure blaster until the gauge reads 0 PSI 20 Maintain correct air pressure when working Do not allow pressure to exceed 125 PSI If the safe
12. sive will come out of the side of the hose at 65 or more PSI For warranty service and repair please go to www uwelding com HEALTH CONSIDERATIONS Protect yourself and those around you from overspray Remember that your portable abrasive blaster is shooting a powerful spray of abrasive material Do not point it at yourself or anyone around you Wear a filter or mask over your mouth when using this unit You will create a cloud of abrasive material and debris which is dangerous to inhale Remove cover or protect anything around you that might be damaged from direct or indirect contact with the abrasive spray or particles Anything subject to contamination damage computers electronics etc or anything with a fine surface automobiles furniture etc should NOT be near your pressure blaster TROUBLE SHOOTING PROBLEMS PROBLEM CAUSE RECOMMENDED SYMPTOMS ACTION Surging of Blast Flow Excessive Media Consumption Clogging and Plugging of Blast Flow Moisture in Abrasive Media Humid Weather Overtaxed Compressor Lack of Air Pressure Lack of Abrasive Flow Air pressure too low Too much media Abrasive control valve open too far Air pressure too low Debris in media Media size too large Nozzle plugs Wet media Wet media Water in air Water in tank Moderate humidity High humidity Compressor too small Nozzle size too large Too many leaks in air lines Holes in abrasive hose
13. ty valve does not release excess air pressure stop all work and open the sandblasting gun to release pressure 1n the tank WARNING The warnings and cautions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be understood by the operator that common sense and caution are factors that cannot be built into this product but must be supplied by the operator AIR ABRASIVE SUPPLY REQUIREMENTS Abrasive Use Per Hose ID Hose Length Nozzle ID Compressor HP CFM 125PSI H our 1001bs EN CEN ast 0175 2001 Air pressure in the range of 65 125PSI is recommended and will provide the best results ASSEMBLY 1 Place tank assembly on a soft work surface fasten the two handlebars 06 to the tank using four pan screws 08 and four washers 50 and four hex nuts 09 Note keep the handle curve ends upward 2 Locate the axle 05 and slide it through the holes in the sides of the handlebars 06 Place one wheel 02 at each end of the axle and fasten them into place with cotter pins 03 and washer 51 3 Insert the fixed foot 04 onto the fitting on the bottom of the tank near the edge Use your last cotter pin 03 to hold the foot to the tank 4 Loose the hose clamp 23 on the end of the abrasive hose 24 slide the hose 24 along the hose clamp 23 to the nipple and tighten the clamps very firmly which have to resist the force of 65 to 125 PSI SANDBL
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