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Summary of Contents for MMLJ MANUFACTURING DUSTLESS BLASTING DB500
- Page 1 DB500 ® USER MANUAL...
- Page 2 The Future of Surface Preparation ® 800-727-5707 Support@DustlessBlasting.com Facebook.com/DustlessBlaster M M L J , I N C . Toll Free Email 5711 Schurmier Rd. Youtube.com/MMLJManufacturing Houston TX, 77048 +1 713-869-2227 713-868-8041 @DustlessBlaster International Dustless_Blasting...
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Page 3: Table Of Contents
A NOTICE TO INTERNATIONAL DISTRIBUTORS: International Distributors are responsible for translation of the manual. Please read and understand manual fully prior to operating any machinery. TABLE OF CONTENTS Warning Warranty Diagrams and Part Lists DB800 Model ® DB800 Diagram ® DB800 Parts List ®... -
Page 4: Warning
IMPORTANT IMPORTANTE (Pertinent to blast machines) (Relativo a todos maquinas) WARNING ADVERTENCIA Before operating any abrasive blast cleaning equipment Antes de operar cualquiera de los equipos de limpieza con READ ALL operating and maintenance instructions. chorro abrasivo, LEA TODOS las instrucciones de operacion Personal protective equipment is REQUIRED when using y mantenimiento. -
Page 5: Warranty
BLAST POT WARRANTY MMLJ, INC. LIMITED WARRANTY IMPORTANT: Terms of Warranty MMLJ, Inc. warrants that the product you have purchased is free from defects in materials or workmanship under normal use during the warranty period. Your sales receipt, showing the data of purchase for this product, is your proof of the date of purchase. This warranty is valid only if the product is assembled/installed according to the instructions included with the product. - Page 7 INSTALLATION AND OPERATING INSTRUCTIONS PLEASE READ CAREFULLY BEFORE OPERATING MODEL DB500 FIGURES 1. Pinch Hose 7. Compressed Air Pressure Gauge 13. Bottom Flange 2. Control Box Input Couplings 8. Pressure Regulator 14. Overflow Valve 3. Fill Port 9. Control Box 15.
- Page 8 NOTE: ITEMS 24, 25 & 26 ARE INSTALLED ON THE INSIDE OF TANK.
- Page 9 CONNECT ITEM 53 TO ITEM 37. CONNECT ITEM 54 TO ITEM 56. CONNECT ITEM 57 TO ITEM 52.
- Page 10 Item No. Description Part No. Stock No. Qty. Outlet Elbow Assembly Complete M‐17 72856/001 Outlet Elbow Cap Bolts (4) M‐17‐D 82563/001 Outlet Elbow Cap M‐17‐C 131054/001 Outlet Elbow Cap Gasket M‐17‐G 131227/001 Outlet Elbow Insert Gasket M‐23‐G 131147/001 Outlet Elbow Insert M‐23 73602/001 Outlet Elbow Body...
- Page 11 Item No. Description Part No. Stock No. Qty. Vibrator Bolt, Washer, Lock Washer & Nut Vibrator 133811/001 1/4" 90 Degree Street Elbow RC‐16 73813/001 Pinch Valve Plate 134611/001 Pinch Valve Mounting Bolts (2) Pinch Valve Mounting Lock Washers (2) KF Series Coupling Gasket 131148/001 Elbow Adapter Bolts (2) KF‐17‐B...
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Page 12: Getting Started
Getting Started A NOTE TO BLASTER STEP 3. Power up your compressor Before blasting, it is recommended that user reads through Please refer to your compressor manufacturer’s manual the entirety of this manual for proper operating procedures for operating instructions. and important maintenance instructions. -
Page 13: Shut Down Procedures
STEP 5. Shutting Down While the compressor is running, close the air inlet valve and open the blow down valve to release the pressure. Let the blast pot fully depressurize before turning off the compressor. Open Blow Down Valve Close Air Inlet Valve Note: If you turn the compressor off first, the pressure in the pot will backflow air, water, and media into other parts of the system, causing them to fail. -
Page 14: Maintaining Your Blast Pot
Maintaining your Blast Pot CONTROL BOX MAINTENANCE The control box has its own pressure regulator. This is already set properly from the factory, and should not be tampered with. If it gets changed, make sure to readjust it to 90 PSI. CONTROL BOX VALVE (LOCATED NEAR IN CONTROL BOX) It is time to service your control box valve when the shutoff time is longer than usual or the valve is not actuating properly. - Page 15 FLUSHING BLAST POT OUT Regularly flushing the pot avoids buildup on inside walls, which could inhibit the system. Once a month or so, you should rinse the pot out: 1. Fully depressurize machine. 2. Remove 2 bolts and 2 air inlet body lugs from bottom of machine. 3.
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Page 16: Troubleshooting
Troubleshooting MEDIA BUILD UP INSIDE POT - ADJUSTING VIBRATOR VALVE On the left side of your control box, a small brass petcock valve controls the vibrator speed. This vibrator valve must be open during blasting. Adjust it so that you feel maximum vibration at the head of the machine. This will insure that all of the media gets “shaken”... -
Page 17: Containment, Masking, And Blast Pattern Adjustments
Containment, Masking, and Blast Pattern Adjustments CONTAINMENT To capture the blasting byproducts use heavy plastic or a tarp. Lay out your plastic and weigh the corners down, placing your project in the center. You can sweep up media or use simple curtains or barriers. MASKING Mask off any glass, chrome, rubber seals, wiring, electrical, or moving mechanical parts and anything else that looks delicate or like it shouldn’t have water and grit inside it. -
Page 18: Storing Machine
Storing Machine STORING MACHINE If leaving unit for extended period of time, you should blast the water and media out of machine OR: 1. Fully depressurize machine. 2. Remove 2 bolts from bottom flange of machine. 3. Remove 2 lugs from bottom flange. 4. -
Page 19: Choosing Your Blast Pressure
Choosing Blast Pressure BLAST PRESSURE Different materials and coatings call for different pressures or blasting distances. Thick metal can handle a lot of pressure, while sheet metal could be dented by using too much pressure. Simple paint may come off nicely with the nozzle far away, while tough undercoating may come off better with the nozzle closer. -
Page 20: Choosing Your Abrasive
Choosing Abrasive WHAT IS ABRASIVE? Abrasive (also called media) is mixed with water inside the blast tank. When blasting, you propel this mixture towards a surface at high speed, to remove paint, rust, and other coatings. TYPES OF ABRASIVE Dustless Blasting allows you to use a wide variety of abrasives, either wet or dry. - Page 21 A common misconception is that the coarser glass will help you get through a job faster. It is true that 20/40 glass is slightly more aggressive than 40/70. However, because it’s so coarse, you’re only getting half as many particles of glass in the same size bag.
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Page 22: Abrasive Comparison Chart
COMPARISON CHART Understanding the impact of different abrasives will help in deciding the best media for the job. The following chart will explain the characteristics of various media types. Surface Surface Description Speed Hardness Bulk Density Profile Removal Sharp, long lasting 110 lbs/ft Aluminum Oxide media for fast etching... -
Page 23: Resources And Training
RESOURCES TRAINING | SAFETY | REPLACEMENT PARTS For assistance with servicing your machine, visit: service.DustlessBlasting.com For replacement parts and accessories, visit: store.DustlessBlasting.com For training resources, visit: support.DustlessBlasting.com To submit a ticket or to find safety data sheets, business guides, authorization certificates, and warranty information, visit www.DustlessBlasting.com/support... - Page 24 Toll Free: 1-800-727-5707 International: 1-713-869-2227 www.DustlessBlasting.com...
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