DB500 & DB800 - Dustless Blasting
Contents
1. 77048 Toll free 800 727 5707 International 713 869 2227 www DustlessBlasting com PAGE 42. INSTALLATION OPERATING AND MAINTENANCE DIRECTIONS FOR DUSTLESS BLASTING MODELS DB500 amp DB800 The following information is given with your best interest in mind Do not jeopardize the machine operation and result by lack of attention to these directions DUSTLESS BLASTING MODELS DB500 amp DB800 1 Pinch Hose 6 Compressed Air Inlet 11 Abrasive Control Lever 16 Abrasive Control Knob 2 Control Box Input Couplings 7 Compressed Air Pressure Gage 12 Vibrator 17 Vibrator Valve 3 Fill Cap 8 Pressure Regulator 13 Bottom Flange 18 Moisture Trap 4 Blowdown Valve 9 Control Box 14 Overflow Valve 5 Air Inlet Valve 10 Blast Pressure Gage 15 Pinch Valve STEP 1 Compressed air supply hose size and lengths from air compressor to Dustless Blasting machine 50 or shorter length use at least 1 ID hose 75 to 100 lengths use at least 1 1 4 ID hose 125 and longer lengths use at least 1 1 2 ID hose If available hose is used and is smaller than sizes specified against recommendation use 2 t
3. ction against dust inhalation Air MUST be filtered and monitored for Carbon Monoxide DANGER Use of abrasive cleaning equipment with silica sands may produce a heavy concentration of silica dust Breathing this dust can produce Silicosis a permanent lung disease Depending upon the object to be cleaned blasting even with non silica abrasives may release hazardous dust particles into the air that can cause permanent lung damage Failure to use NIOSH approved air fed respirator helmet may cause SERIOUS lung DAMAGE This warning as to the proper use of an approved respirator helmet applies not only to the operator but extends to all those working in or around the blasting area such as pot tenders painters supervisors etc CAUTION Blast cleaning equipment and components are subjected to wear and deterioration e Keep your equipment in good operable condition e MAINTAIN nozzle controlat all times during operation e INSPECT machine nozzles hoses and couplings e WIRE all kwik fit hose couplings together Inspect clean or replace helmet lens and filters frequently Ground equipment to AVOID electrical schock e DO NOT operate any machine without thorough knowledge of machine operation Carefully READ the INSTALLATION OPERATING and MAINTENANCE directions supplied with the machine from the factory If you do not have a copy please contact your employer supervisor or MMLJ Inc Company 5711 Schurmier Road Houston TX
4. ill be removed Start far away and come in slowly to insure you don t cause damage to the substrate Material Fiberglass Boats Brick Walls Metal Auto Bodies Thick Aluminum Thick Steel 70 PSI 100 PSI 100 120 PSI 120 150 PSI 150 PSI 18 24 In 18 24 In 12 14 In 12 20 In 10 14 In Medium Large STEP 8 To begin the blast cleaning operation Insure that fill cap is on and locked down Make sure the blowdown valve feature 4 is closed Open compressed air intake valve feature 5 fully Push in safety button and depress remote control activator valve lever continuously A second or two will pass before blasting begins STEP 9 To stop the blast cleaning operation Close compressed air inlet valve feature 5 and open air pressure release blow off valve feature 4 Said actions will shut off compressed air to the machine and release the air pressure from the machine STEP 10 Blowing Out Blast Hose Push abrasive shut off lever feature 11 towards machine which lowers outlet pipe to a seated position and permits only compressed air to be discharged from the blast nozzle If excessive abrasive has crowded around the outlet pipe it may be hard to lock the abrasive lever A twisting of the pipe by means of moving the outlet elbow will permit the pipe to be lowered PAGE 2 MAINTENANCE MOISTURE TRAP ATTENTION Keep the black screw on the Moisture Trap feature 18 slightly open to drain the liquid from the trap area O
5. nly open it slightly allowing some air to be released CONTROL BOX ATTENTION The control box has its own pressure regulator This is already set properly from the factory and should not be tampered with under normal circumstances However if it gets changed accidentally make sure you readjust it to 90 PSI VIBRATOR ATTENTION During blasting the vibrator valve feature 17 must be open Adjust it so that you feel maximum vibration at the head of the machine This will insure that all media gets shaken to the bottom of the tank You should only need to adjust it once and then you can leave it alone there is no need to close it PROTECTION FOR INSIDE THE MACHINE No damage to the machine will occur by leaving water and media inside of it However if water is left in the machine longer than 24 hours it will begin to smell foul For this reason when the machine will not be in use for a long time it is recommended that you remove water and sand from machine either by blasting it out or by removing the bottom flange feature 13 and allowing it to drain Refer to the user s manual for instructions on how to do this CHANGE OR STOPPAGE OF ABRASIVE FLOW assuming proper installation air pressure and abrasive Check media quality Your machine is designed to run with clean high quality abrasive Dirt will turn into mud clay will harden etc Check blast nozzle if foreign matter should accidentally enter the machine a stoppage can occu
6. r FULLY DEPRESSURIZE MACHINE FIRST The air pressure gauge on machine is important and should be replaced when broken or inoperative in order to sustain productive and profitable results WARNING OSHA regulations require remote controls point of operations controls on all blast machines Basic manual control machines shown in this manual are for the convenience of customers having existing remote control systems and for selecting various remote control systems offered DUSTLESS BLASTING is an MMLJ Inc Company the original manufacturer of blast equipment and still the only to offer a lifetime warranty on tank assemblies Built in America with quality Patent since 1941 5711 Schurmier Road Houston TX 77048 800 727 5707 Toll Free 713 869 2227 Int www DustlessBlasting com BULLETIN DO OTMR Reproduction of data contained herein expressly forbidden without written permission MADE IN USA PAGE 3 IMPORTANT Pertinent to all abrasive blast cleaning machines WARNING Before operating any abrasive blast cleaning equipment READ ALL operating and maintenance instructions Personal protective equipment is REQUIRED when using this type of equipment Operator MUST be equipped with heavy canvas or leather gloves apron and arm protectors Safety shoes and hearing protection MUST be work when required NIOSH approved air fed respirators helmets furnished with at least Grade D breathing air MUST be used for prote
7. u must ADD WATER BEFORE ABRASIVE Open the overflow valve feature 14 and fill the machine with water until valve overflows then close valve and add media Media capacities Dustless Blaster Capacity Chart Based on media weighing 72 bs ft Model DB150 DB225 DB500 DB800 DB1500 DB3000 Abrasive or cleaning medium should be no longer than one third the diameter of the blast nozzle used to avoid nozzle plugging Pour screened dry abrasive into top of machine abrasive screen inside funnel is designed to keep foreign matter from entering machine STEP 6 To adjust abrasive supply Loosen abrasive adjustment screw feature 16 Pull abrasive control lever feature 11 upward which will raise outlet pipe Raise pipe until approximately 1 2 of unpainted pipe is visible Said distance will actually very depending on size of blast nozzle used size and type of abrasive used While the outlet pipe is in the adjusted raised position tighten abrasive adjustment screw and set lock nut thereon which will lock the abrasive control lever setting STEP 7 To adjust blast pressure Tighten or loosen knob on the pressure regulator feature 8 Use the chart below to get an idea of what pressure to use The chart below contains approximate guidelines experiment until you find the right blast distance and pressure The closer the nozzle is to the blast surface the smaller the blast pattern the harsher the effect and the faster a coating w
8. wo hoses example 2 two 3 4 ID instead of 1 one 1 ID Connect hoses to machine and air compressor with Y pipe fittings do not use any fittings smaller than 1 1 4 pipe size Connect fittings to machine with 1 1 4 pipe nipple and bushing fittings to receive hose couplings Connect air line to 1 1 2 or 2 air compressor receiver openings not 3 4 opening Avoid restrictions in air supply line because it is important that proper volume and pressure of compressed air occur for maximum machine production PAGE 1 STEP 2 Connection of air supply hose to machine Blow Out air supply hose prior to coupling with machine in order to remove all moisture oils and dirt Connect hose to feature 6 compressed air inlet STEP 3 Connect coupled blast hose to pinch hose feature 1 STEP 4 Connect remote control air supply hose to control box Connect the color coded twin line to the corresponding male connectors on the bottom of the control box feature 2 Connect the opposite end of the dual line hose to the male connection of the dual line activator valve Activator valve should be conveniently positioned near end of blast hose and held in place by coupling band All connections must be absolutely tight because any compressed air leakage will impair machine s operation STEP 5 To fill the machine with abrasive Machine will use any type of abrasive or cleaning medium which sinks in water and is not water soluble Yo
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