DUSTLESS BLASTING MOBILE Series, DB500 MOBILE S, DB800 MOBILE, DB800 MOBILE DUAL, DB500 MOBILE XL User Manual

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DUSTLESS BLASTING

MOBILE USER MANUAL

DB500® MOBILE S™ | DB500® MOBILE XL™ | DB800® MOBILE™ | DB800® MOBILE DUAL™

The Future of Surface Preparation

MMLJ, INC.

5711 Schurmier Rd. Houston TX, 77048

800-727-5707

Toll Free

+1 713-869-2227

International

DustlessBlastingBusiness.com

Info@DustlessBlasting.com

713-868-8041

Fax

Facebook.com/DustlessBlaster

Youtube.com/MMLJManufacturing

@DustlessBlaster

Dustless_Blasting

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 I

Warranty II

Diagrams and Part Lists 1

DB500® Model 2

DB800® Model 4

DB500® and DB800® Diagram 6

DB500® and DB800® Parts List 8

Start Up and Shut Down Procedures 11

Getting Started 12

Shut Down Procedures 13

Choosing Your Blast Pressure 14

Choosing Your Abrasive 15

Abrasive Comparison Chart 17

Towing Safety and Hookup Procedures 18

Switching from Wet Blasting to Dry Blasting 18

Mobile Maintenance and Best Practices 19

Best Practices for Maintaining your Mobile 20

Compressor Maintenance 22

Containment, Masking, and Nozzle Control 24

Blasting in Winter 25

Removing Blast Pot from Trailer 26

Pinch Hose Maintenance Guide 27

Resources and Training 28

Service Recorder 29

IMPORTANT

(Pertinent to blast 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, aprons, and arm protectors. Safety shoes and hearing protection MUST be worn when required. NIOSH approved air fed respirators (helmets) furnished with at least Grade D breathing air MUST be used

for protection against dust inhalation. Air MUST be ltered

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.

• Keep your equipment in good operable condition.

• MAINTAIN nozzle control at all times during operation.

• INSPECT machine, nozzles, hoses, and couplings.

• WIRE all kwik-t hose couplings together.

• Inspect, clean, or replace helmet lens and lters frequently.

• Ground equipment to AVOID electrical shock.

• 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.

IMPORTANTE

(Relativo a todos maquinas)

ADVERTENCIA

Antes de operar cualquiera de los equipos de limpieza con chorro abrasivo, LEA TODOS las instrucciones de operacion y mantenimiento. ES OBLIGATORIO usar equipo protector personal al manejar este tipo de equipos. El Operador DEBE. estar equipado con guantes, delantales y protectores de brazos de cuero 0 Iona pesada. DEBEN usarse zapatos de seguridad y proteccion para los oldos cuando aSI se exija. Los respiradores (cascos) alimentados por aire, aprobados por NIOSH y que esten previstos de por 10 menos aire respi rable de Grado D, DEBEN ser usados como proteccion contra la inhalacion de polvo. El aire DEBE ser

ltrado y controlado para detectar monoxide de carbono.

PELIGRO

Es posible que el uso de los equipos de limpieza por abrasion con arenas sillceas provoque una concentracion pesada de polvo sillceo. Este polvo, al ser respirado, puede producir “silicosis”, que es una enfermedad pulmonar permanente. Dependiendo del objeto que va a limpiarse, es posible que la limpieza a chorro, aun con abrasives no silfceos, provoque el escape de partlculas de pohio pel igrosas en el aire que pueden causar dano pulmonar permanente. Si nose usan los respiradores (cascos) alimentados por aire, aprobados por NIOSH, puede provocarse un GRAVE DANO a los pulmones. Esta advertencia sabre el uso adecuado de un respirador (casco) aprobado no solo se aplica al operador sino que comprende a todos aquellos que trabajan en el area de limpieza a chorro, 0 al rededor de la misma, como por ejemplo los que vigilan los recipientes, los pintores, supervisores, etc.

PRECAUCION

El equipo de limpieza a chorro y sus componentes estan sujetos a desgaste y deterioro.

• Mantenga su equipo en buenas condiciones deoperacion,

• MANTENGA el control de la boquilla en todo momenta durante la operacion.

• INSPECCIONE !a maquina, las boquillas, las mangueras y las uniones.

• ALAMBRE juntas todas las uniones de la manguera de rapido ajuste.

• lnspeccione, limpie 0 reemplace los lentes y  ltros del

casco frecuentemente.

• Conecte el equipo a tierra para EVITAR un shock electrico.

• NO opere ninguna maqu ina sin tener un detallado conocimiento de la operacion de la misma.

LEA cuidadosamente las instrucciones de INSTALACION, OPERACION Y MANTENIMIENTO que vienen incluidas de fabrica con la maquina. Si no tiene una copia, slrvase comunicarse con su empleador (supervisor) con MMLJ Inc.

MOBILE EQUIPMENT WARRANTY

MMLJ, INC. LIMITED WARRANTY

BLAST POT, LIMITED LIFETIME WARRANTY:

This warranty applies only to pressure vessels manufactured by MMLJ, Inc. under the Dustless Blasting® brand name. This product is

backed by a limited lifetime warranty, excluding only expendable parts such as gauges and valves (which are covered by manufacturer

other than MMLJ, Inc) and paint. Your sales receipt is your proof of the date of purchase. This warranty becomes valid only if the

product is assembled/installed according to the instructions included with the product.

This Limited Warranty does not extend to any product that has been damaged or rendered defective (a) as a result of accident, misuse,

or abuse (b) by the use of parts not manufactured or sold by MMLJ and/or (c) by modication or improper installation of the product.

TRAILER, LIMITED ONE YEAR WARRANTY:

This warranty applies only to trailers manufactured by MMLJ, Inc. under the Dustless Blasting® brand name. This product is backed by

a limited, one year warranty on manufacturer defects, excluding only expendable parts such as gauges and valves (which are covered

by manufacturer other than MMLJ, Inc) and paint. Your sales receipt is your proof of the date of purchase. This warranty becomes valid

only if the product is assembled/installed according to the instructions included with the product.

This Limited Warranty does not extend to any product that has been damaged or rendered defective (a) as a result of accident, misuse,

or abuse (b) by the use of parts not manufactured or sold by MMLJ and/or (c) by modication or improper installation of the product.

ROTAIR COMPRESSOR, LIMITED ONE YEAR WARRANTY:

The Rotair compressor used as part of a Dustless Blasting® mobile unit is covered under the FTG Equipment Solutions, Inc. (FTG)

Product Limited Warranty. This warranty is limited to product failures which are a result of defects in workmanship and material. The

compressor itself is not a product of MMLJ, Inc. and MMLJ, Inc. will not be held responsible for the repair or replacement of said

product.

Original purchaser must verify that MMLJ, Inc. has submitted FTG warranty registration on your behalf.

Please refer to the FTG Equipment Solutions, Inc. (FTG) Product Limited Warranty for more information regarding your compressor

warranty. Visit www.DustlessBlasting.com/legal/warranties to view the full warranty of this product.

(855) 303-7900

TEXTRAIL TRAILER PARTS TIRE FOUR YEAR WARRANTY:

The TexTrail tires used as part of a Dustless Blasting® mobile unit are covered under the TexTrail Trailer Parts Tire Limited Warranty.

The tires themselves are not a product of MMLJ, Inc. and MMLJ, Inc. will not be held responsible for the repair or replacement of said

product.

Original purchaser must verify that MMLJ, Inc. has provided you with a TexTrail warranty registration card.

Please refer to the TexTrail Trailer Parts Tires Limited Warranty for more information in regards to your trailer tire warranty. Visit www.

DustlessBlasting.com/legal/warranties to view the full warranty of this product.

(800) 260-0004

ALL-FLO WATER PUMP FIVE YEAR WARRANTY:

The All-Flo waterpump used as part of a Dustless Blasting® mobile unit is covered under the All-Flo Limited Warranty. The pump itself

is not a product of MMLJ, Inc. and MMLJ, Inc. will not be held responsible for the repair or replacement of said product.

Original purchaser must verify that MMLJ, Inc. has provided you with an All-Flo warranty registration card.

Please refer to the All-Flow Warranty for more information in regards to your trailer tire warranty. Visit www.DustlessBlasting.com/

legal/warranties to view the full warranty of this product.

(440) 354-1700

IMPORTANT: Third Party Warranties

For parts (other than tires or compressors) that are not covered by MMLJ, Inc., please contact our ofce and report the defect. MMLJ,

Inc. will then proceed with the warranty process for the affected item on your behalf. All items not covered by MMLJ, Inc. will fall under

a limited one year warranty free of manufacturer defects. Such items may include axles, gauges, trailer brake controllers, regulators, etc.

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.

During the warranty period, MMLJ will repair or replace (at MMLJ’s option) the product if it becomes defective or otherwise fails to

conform to this Warranty under normal use. In repairing the product, MMLJ may replace defective part with new, or at the option of

MMLJ, serviceable used parts that are equivalent to new parts in performance. MMLJ reserves the right to change manufacturers of

any part to cover any existing warranty. This extends to items normally covered by a manufacturer other than MMLJ, Inc. used on this

product within the rst calendar year of purchase.

This warranty does not cover shipping charges; export taxes, custom duties and taxes, or any other charges associated with

transportation of the parts or products. To obtain warranty service, you must contact MMLJ customer service representative at our

phone number located in this manual. Any parts determined to be defective must be brought to the attention of MMLJ, Inc. within

6 months of delivery of equipment. You must prepay any shipping charges, export taxes, custom duty taxes, or any other charges

associated with transportation of the parts or product. In addition, you are responsible for insuring any parts or product shipped or

returned. You assume the risk of loss during the shipment. You must present MMLJ with proof-of-purchase documents (including the

date of purchase). Any evidence of alteration, erasure, or forgery of proof-of-purchase documents will be cause to void this warranty.

The warranties listed above do not extend to any product that has been damaged or rendered defective (a) as a result of accident,

misuse, or abuse (b) by the use of parts not manufactured or sold by MMLJ and/or (c) by modication or improper installation of the

product. Product on which the serial number has been defaced or removed is not eligible for warranty service. Should any product

submitted for warranty service be found ineligible, an estimate of repair cost will be furnished and the repair will be made if requested

by you upon MMLJ receipt of payment or acceptable arrangements for payment. Except, as expressly set forth in this warranty, MMLJ

makes no other warranties, expressed or implied. This is the only express warranty applicable to Dustless Blasting® branded products.

MMLJ does not assume, nor authorize anyone to assume for it any other express warranty.

For more warranty information, visit www.DustlessBlasting.com/legal/warranties.

Please call our ofce for any questions on warranties or warrantied items.

Toll Free: 800-717-5707

International: +1 713-869-2227

Info@DustlessBlasting.com

III

DIAGRAMS AND PARTS LIST

PLEASE READ CAREFULLY BEFORE OPERATING

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 the MMLJ Inc. Company.

MODEL DB500

16 15

DB500® OVERVIEW

1. Pinch Hose

2. Control Box Electric Connectors

3. Fill Port

4. Blowdown Valve

5. Air Inlet Valve

6. Compressed Air Inlet

7. Compressed Air Pressure Gauge

DB500

MOBILE S™ & DB500® MOBILE XL™ OVERVIEW

8. Pressure Regulator

9. Control Box

10. Blast Pressure Gauge

11. Rocker Arm

12. Vibrator

13. Bottom Flange

14. Overow Valve

15. Pinch Valve

16. Abrasive Control Knob

17. Vibrator Valve

18. Filter Regulator/Moisture Trap

19. Abrasive Adjustment Mark

20. Water Inlet Valve

21. Water Pump

22. MT1 Drain

23. Service Valves

24. Water Tank Valve

25. Water Storage Tank

DB500® MOBILE S™

2524

22 23

DB500

MOBILE XL™

2524 21

2223

9 4

14 205

MODEL DB800

16 15

3 19

12 13

DB800® OVERVIEW

1. Pinch Hose

2. Control Box Electric Connectors

3. Fill Port

4. Blowdown Valve

5. Air Inlet Valve

6. Compressed Air Inlet

7. Compressed Air Pressure Gauge

8. Pressure Regulator

9. Control Box

10. Blast Pressure Gauge

11. Rocker Arm

12. Vibrator

13. Bottom Flange

14. Overow Valve

DB800® MOBILE™ & DB800® MOBILE DUAL™ OVERVIEW

20. Water Inlet Valve

21. Water Pump

22. MT2 Drain

23. Service Valves

15. Pinch Valve

16. Abrasive Control Knob

17. Vibrator Valve

18. Moisture Trap

19. Abrasive Adjustment Mark

24. Water Tank Valve

25. Water Storage Tank

DB800® Mobile™

24 2523 21

994

141420

DB800

Dual Mobile™

23 24

46A

45A

46A

45B

45C

55F

55H

55D

55E

55A

55B

55C

55G 56

55J

55K

55P

55Q

40 39

45B

CONNECT ITEM 53 TO ITEM 37.

CONNECT ITEM 54 TO ITEM 56.

45A

55D

55M

55L

55M

55N

55D

55R

55S

55U

55T

NOTE: ITEMS 24, 25 & 26

ARE INSTALLED ON THE INSIDE OF TANK.

33A

33B

33D

33F

33G

33H

33C

33E

33J

33K

15A

30A

30D

30E

30C

30B

27A

Item No. Description Part No. Stock No. Qty.

1 Outlet Elbow Assembly Complete M-17 72947/001 1 1A Outlet Elbow Cap Bolts (4) M-17-D 82563/001 1 1B Outlet Elbow Cap M-17-C 131054/001 1 1C Outlet Elbow Cap Gasket M-17-G 131227/001 1 1D Outlet Elbow Insert Gasket M-23-G 131147/001 1 1E Outlet Elbow Insert M-23 73602/001 1 1F Outlet Elbow Body M-17-B 80789/001 1

2 34-1/2” Outlet Pipe (DB-500) 500-2 134613/001 1

2 43-3/16” Outlet Pipe (DB-800) AB-63 131121/001 1

3 Packing Gland Nut M-5-1 131102/001 1

4 Gasket M-13 131226/001 1

5 Coupling Gasket M-5-G 131225/001 1 5A Seal (manufactured after 5/15/13) M-6-S 131226/002 1

6 Rocker Arm Adjusting Screw AB-8 73464/001 1

7 Rocker Arm B-3-1 73480/001 1

8 Abrasive Lever Clevis Pin w/ Cotter Pins AB-11-S 131070/001 1

9 Pedestal Clevis Pin w/ Cotter Pins AB-12-S 131069/001 1 10 Rocker Arm Hinge Yoke AB-75 131113/001 1 11 Pedestal Locking Nut/Fill Cap Hold-Down Screw Locking Nut AB-75-C 22926/001 2 12 Rocker Arm Acorn Nut (5/8”-11) AB-8-N 134687/002 1 13 Rocker Arm Hinge Yoke Adjusting Nut AB-75-E 131094/001 1 14 Connecting Link w/ Cotter Pins AB-10 131133/001 1 15 Abrasive Control Lever AB-9 73500/001 1

15A Abrasive Control Lever Washers FBA 4

16 Wheel Cotter Pin AB-33-C 72804/001 2 17 Wheel Washer AB-33-W 72803/001 2 18 Wheel BF-31-2 133648/001 2 19 Air Inlet Body Gasket AB-1-G 131228/001 1 20 Air Inlet Nozzle (5/8”) AB-1-NHD 131126/001 1 21 Air Inlet Body ABHD-1 73478/001 1 22 Air Inlet Body Lug AB-47 131231/001 2 23 Air Inlet Body Lug Bolts (2) AB-47-B 23879/001 1 24 1” x 9-3/4” TOE Nipple (DB-800) FG-68 131400/001 1 24 1” x 6” TOE Nipple (DB-500) 131353/001 1 25 1” Elbow AB-61-T 131867/001 1 26 1” x 3” Nipple AB-61-S 131861/001 1 27 1” x 3/4” Bushing AB-61-A 131860/001 1

27A 1” Plug (stand alone units only) 1

28 3/4” 90 Degree Street Elbow 131847/001 1 29 3/4” x 4” Nipple (DB-800 only) HC-30-N 131392/001 1

29 3/4” Close Nipple (DB-500) RC-23 131859/001 1 30 3/4” Blow-Off Valve (red handle) AB-61-C 70239/001 2

30A 3/4” Blow-Off Valve (blue handle) 133762/001 1 30B Safety Tag 1 30C 3/4” Check Valve 133051/001 1 30D 3/4” Crowfoot 132172/001 1 30E Crowfoot Gasket M-G-2 73850/001 1

31 3/4” Close Nipple (DB-800) RC-23 131859/001 4 32 Blow-Off Restrictor AB-61-R 68967/001 1 33 Fill Cap Assembly B-60-1 73856/001 1

33A Bolt AB-60-A 70241/001 1 33B Fill Cap handle w/ Safety Lock B-60-H-1 131317/001 1 33C Button Bleeder BB-1S 69953/001 1 33D Fill Cap Plate B-60-D1 131091/001 1 33E CNG Gasket 72627/001 1

33F Fill Cap Sleeve B-60-B-1 131031/001 1 33G Rubber Seal RING B-13-G 73620/001 1 33H Inner Nut AB-60-E 28578/001 1

33J Fill Cap Bottom Plate B-60-R1 131095/001 1

33K Outer Nut AB-60-F 77078/001 1

34 Fill Funnel 1 35 Vibrator Bolt, Washer, Lock Washer & Nut 2 36 Vibrator 133811/001 1 37 1/4" 90 Degree Street Elbow RC-16 73813/001 1 38 Pinch Valve Plate 134611/001 1 39 Pinch Valve Mounting Bolts (2) 1 40 Pinch Valve Mounting Lock Washers (2) 1 41 KF Series Coupling Gasket KFG 131148/001 1 42 Elbow Adapter Bolts (2) KF-17-B 23858/001 1 43 Elbow Adapter, w/ Gasket KF-17 80790/001 1 44 Elbow Adapter Flat Gasket KF-17-G 131149/001 1 45 Short Blast Hose Assembly 72635/007 1

45A KF Series Coupling Gasket KFG 131148/001 2

45B Hose Coupling w/ Screws KF-4 80837/001 1 45C 1" Blast Hose, Uncoupled 72635/001 1

46 Pinch Valve 74290/001 1

46A Pinch Valve Safety Cover (complete with screws) 134720/001 1

47 1/4" Close Nipple 77094/001 1 48 Button Bleeder BB-1S 69953/001 1 49 Brass Bushing DRC-3-B 73815/001 1 50 1/4" Tee RC-19 131865/001 1 51 3/8" x 52" Air Hose Assembly (Pinch Valve) 134798/002 1 52 Electric Control Box 84378/001 1 52 A Control Box Mounting Nuts & Lock Washers (2) FBA 1 53 3/8" x 23" Air Hose Assembly (Vibrator) (DB-500) 134798/003 1 53 3/8" x 27" Air Hose Assembly (Vibrator) (DB-800) 134798/005 1 54 3/8" x 36" Air Hose Assembly (Air Inlet) 134798/004 1 54 3/8" x 43" Air Hose Assembly (Air Inlet) 134798/006 1 55 Air Inlet Assembly (DB-500) B-30-1-1 133021/003 1

55 Air Inlet Assembly (DB-800) B-30-1-2 133021/004 1 55A Gauge SB-30-G 134366/001 1 55B Bushing AB-30-IC 131868/001 1 55C 1-1/4" Tee AB-30-IT 131856/001 1

55D 1-1/4" Close Nipple 131598/001 3

55E 1-1/4" Regulator 132055/002 1

55F Gauge 70238/001 1

55G 1/4" 90 Degree Street Elbow RC-16 73813/001 1 55H U-Bolts w/ Nuts 131461/001 2

55J 1-1/4" x 5" Nipple AB-30-N 131462/001 1 55K 1-1/4" Ball Valve V-99 70240/001 1 55L 1-1/4" Check Valve 133040/001 1

55M 1-1/4" x 1" Bushing (DB-500 Only) 131837/001 1 55M 1-1/4" KC Swivel (DB-800 Only) 83900/001 1 55N 1" Hose Assembly -17" (DB-500 Only) B-30-PR-1 133674/001 1 55N 1-1/4" Hose Assembly - 20" (DB-800 Only) B-30-PR-2 133674/002 1

55P 1-1/4" x 3" Nipple 131858/001 1

55Q 1-1/4" Elbow 131855/001 1

55R 1-1/4" - 4 Lug Crowfoot - Female FE-125 74470/002 1 55S Crowfoot Gasket AMG-4 74908/001 1 55T 1-1/4" x 1" Bell Reducer (DB-800 Only) 131874/001 1

55U 1" Close Nipple (DB-800 Only) RC-24 727821/001 1

56 Hose Adapter RC18 72828/001 1

GETTING STARTED

START UP & SHUT DOWN PROCEDURES

PLEASE READ CAREFULLY BEFORE OPERATING

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 or the MMLJ Inc. Company.

Getting Started

A NOTE TO BLASTER

Before blasting, it is recommended that user reads through the entirety of this manual for tips and tricks on blasting, containment, media, pressure, and more!

STEP 1. Connecting blast hose and electric line

Before you can ll the blast pot, you must connect the blast hose and red head electric line, then depressurize the machine.

Connect the blast hose to the pinch hose at the top of the blast pot and ensure the safety key is in place. The electric line for your red head controller must be connected to the control box on the back of the machine.

Connect Blast Hose Connect Electric Line

Allow the compressor to idle and warm up for about 15-30 seconds. You will know the compressor is ready when you hear the engine sound change and see the pressure gauge climb. Once fully warmed up, go ahead and open the compressor Service Valve all the way.

Open Service Valve

Note: Complete service valve connector may be horizontal depending on compressor type.

STEP 4. Filling the blast pot with water

The water storage tank must be lled before you can start lling your blast pot. Once the tank is llled, open the Water Tank Valve, the Water Inlet Valve, and the Overow

Valve.

STEP 2. Depressurize blast pot

To depressurize you blast pot, you must rst close the Air Inlet Valve and open the Blow Down Valve.

Note: A valve is in the open position when it is aligned

with the xture that it controls.

Note: The Air Inlet Valve and Blow Down Valve will always be in opposite positions of each other.

Close Air Inlet Valve Open Blow Down Valve

STEP 3. Starting the compressor

Before turning on your compressor, make sure the service valves are in the off position. Turn the compressor dial to the ON position, and you will see the control panel light up. Once the Stop Engine light turns off, you can press the START button. Release the button as soon as the engine starts running.

Note: Your water storage tank stores up to 150 gallons of water. This is enough water for roughly 8 hours of wet blasting.

Note: If you are lling the water storage tank before

travelling, you will want to make sure that you have counter weight, such as a pallet of media, on the opposite end of the trailer to evenly distribute the weight.

Open Water Tank Valve

Open Water Inlet Valve Open Overow Valve

Once these valves are all opened, you are ready to activate the water pump. To do this, open the Air Pilot

Valve on the MT1, located near the pressure gauge.

Fill the blast pot with clean water until the Overow Valve starts to drain. At this point, close the Air Pilot

Valve to stop the ow of water. Allow the Overow valve to nish draining, then close it.

STEP 6. Start Blasting

Before you start blasting, you will need to re-pressurize the machine. Do this by closing the Blow Down Valve, and slowly re-opening the Air Inlet Valve.

Note: Opening the air inlet valve wide open and sending a huge burst of compressed air into the machine. This can cause unnecessary wear on the system.

Open Air Pilot Valve

STEP 5. Filling the blast pot with abrasive

Remove the Fill Cap by pulling the paddle up and turning the cap counter-clockwise.

Remove Fill Cap

Place the ll funnel in the opening and pour in the

amount of abrasive that you need. If you are planning to use Rust Inhibitor, add it to the blast pot now.

Once complete, remove the funnel and replace the ll

cap. Everything will mix together during the blasting process.

Note: Your machine will use any type of abrasive or cleaning medium that sinks in water and is not water soluble.

The DB500

• 20 gallons of clean water

• 200 lbs of abrasive (~50/70 mesh size)

• 28 oz of Rust Inhibitor

The DB800® is designed to hold:

• 30 gallons of clean water

• 300 lbs of abrasive (~50/70 mesh size)

• 42 oz of Rust Inhibitor

is designed to hold:

Close Blow Down Valve

Unlock the Abrasive Lever on the blast pot by pulling the

lever upward. You will ll it unlock and pop up. To start

blasting, press down on the toggle switch in the Red Head controller to start blasting.

Note: Try out different blast patterns, distances and

angles to nd the best work ow.

Unlock Abrasive Lever

SLOWLY

Press the Toggle

to Blast

STEP 7. Shutting Down

While the compressor is running, close the Air Inlet Valve and open the Blow Down Valve. Let the blast pot fully depressurize before turning off the compressor.

Note: If you turn the compressor off rst (or switch it to

unload on some models) the pressure in the pot will try its best to get out. Air, media, and water can go up the air hose in the wrong direction. That debris could potentially

go through the regulator and end up in the small lter

regulator, causing your parker valve to fail.

Re-lock the abrasive lever. This will lower the outlet pipe to a seated position and permit only compressed air to be discharged from the blast nozzle. If excessive abrasive has crowded around the outlet pipe and you cannot lock it, swivel the pinch valve. The will twist the pipe and permit it to be lowered.

Open Air Inlet Valve

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.

The distance you hold the blast nozzle from the material affects the harshness and speed of the blast and changes the "blast pattern" size. If you hold the nozzle too far away, the blast pattern will be big, but the coating will come off too slowly. If you hold the nozzle too close, the coating will come off quickly, but the blast pattern will be small. With a tiny

blast pattern you'll have to move your arms a lot more to cover some area, which is inefcient. The best things is to nd a

nice balance between blast pattern size and removal speed.

ADJUSTING BLAST PRESSURE

The Dustless Blasting® system allows you to easily change the blast pressure by turning one simple knob. The higher the pressure is, the higher your productivity. Obviously lower pressures are more gentle on whatever substrate you're blasting. If you need to blast on softer material or very thin metal, lowering the pressure is a good idea to prevent damage.

A clockwise rotation of the pressure regulator knob will increase the pressure, while a counter clockwise rotation will lower pressure. If you try to lower the pressure while the blast tank is pressurized, you'll need to either have someone blast simultaneously, or just open the blowdown valve slightly to release some of that pressure.

COMMON GUIDELINES

Marine

On thick steel like ship hulls, you can operate at about 150 PSI. Fiberglass requires a lower pressure — about 70 PSI — with a larger standoff distance.

Automotive

For most automotive uses, 120 PSI is ideal. Find a balance between blast pattern size, and speed. For thick aluminum like a large trailer, you can blast at up to 150 PSI.

Grafti Removal

For removing grafti from a brick wall, use about 100 PSI so you don't etch the brick. The grafti will still come off quickly

at this low pressure. Here is a chart of some suggested blast pressures:

Blast Pressure

Blast Distance

Fiberglass

Boats

70 PSI

18-24 in.

Brick

100 PSI

18-24 in.

Metal

(Auto)

100-120 PSI

12-14 in.

Aluminum

120-150 PSI

12-20 in.

Steel

150 PSI

10-14 in.

Blast Pattern

*The closer the nozzle is to the blast surface, the smaller the blast pattern.

Large

Medium

Medium-Large

Medium

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. For wet blasting, any abrasive that sinks in water and is not water soluble can be used. However, abrasives that are dirty or have a very inconsistent particle size can cause problems, such as sputtering or clogging of the machine.

Our favorite abrasive is recycled bottle glass, because it's clean, inexpensive, environmentally friendly, and suited for a wide variety of jobs. Sometimes different abrasives are available simply based on geography.

A common question we get is "Can I use play sand?" The answer is NO. Play sand is not an industrial product, so it's not controlled and graded the way abrasives are. It won't behave predictably in your equipment, and you could wind up in loads of legal trouble, from the EPA to local municipalities. Most bags of play sand are explicitly marked "Not to be used for sandblasting".

ABRASIVE SHAPE

Basically, there are two different shapes: angular which has sharp edges, and round with no edges.

Angular abrasive has sharp edges which will cut into the substrate, leaving an anchor prole for the new nish to stick to.

Examples of angular shaped media would be crushed glass, slags and garnet abrasives to name a few.

Round media is used mainly for cleaning or stripping while leaving the surface smooth. It will not rough up the surface or

leave an anchor prole. Examples of round media would be glass beads, sugar sand and plastic pellets.

An anchor prole is a fancy way of describing the rough surface created during the blasting process. These peaks and valleys are usually measured in mils (1/1000 of an inch). One of the main causes

of premature coating failure is an insufcient anchor prole. Its a good

idea to understand from the customer what he/she expects when you

are done. Some people prefer an anchor prole, while others will want a

smoother surface.

For example, if you are stripping a car to be repainted, you'll probably want to leave an anchor prole for the new paint

to adhere to. If you are simply cleaning calcium deposits from a pool — which will not be repainted — leaving a prole is

unnecessary.

ABRASIVE SIZE

Most abrasive is measured with mesh size. During production, it gets shaken through various screens. These screens might have as little as 20

holes per square inch, or as many as 100. This means that 40/70 glass ts

through the 40–70 holes per square inch screens. 20/40 glass is coarser

than 40/70, and 60/100 glass is ner.

ANGULAR ROUND

Looks Like

20/40

40/70

60/100

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. You'll end up using twice as many bags to get the job done, which is not only expensive, but inefcient!

It's a much better idea to increase abrasive density if you want to complete the job faster.

ABRASIVE DENSITY

Understanding the weight or bulk density of the media you are using will also help decide which is best for the process. The heavier the media, the more impact it has on the surface you are blasting. Imagine a golf ball and a ping pong ball. They are the same shape and size, but the golf ball is more dense. If you threw them at someone, the golf ball would hurt a lot more.

Crushed glass has a bulk density of 75-80 lbs per cubic foot— while garnet weighs around 145 lbs per cubic foot. So, the two abrasives at the same mesh size and blast pressure will have different results. A 40/70 crushed glass will be more “gentle” on the surface than the same mesh size of garnet at the same blast pressure.

The harder and heavier the abrasive is, the rougher the prole will be. Using larger, more coarse abrasives will decrease the run time in your machine. For example, if you are blasting with 40/70 crushed glass and decide to use a larger mesh size of 20/40 you will notice a decrease in run time. If both bags of abrasive are 50 lbs, there are fewer particles in the 20/40 mesh size bag than the 40/70. A larger mesh size will be more aggressive so it will have more of an impact to the surface you are blasting.

ABRASIVE HARDNESS

Generally, the harder the particle, the deeper the prole it will impart. Softer abrasives, like organic materials and plastics, are good for removing dirt, oil, grease and paint without removing any of the substrate or creating a prole.

ADJUSTING ABRASIVE SUPPLY

You will need to adjust media ow from time to time, when you are using different types of media or when you are switching between wet and dry blasting.

When wet blasting, start with outlet pipe 1/2 inch above locked position, and adjust in 1/16 inch increments until media runs out before water. Coarser media will require a higher outlet pipe setting.

When dry blasting, start with outlet pipe 3/8 inch above locked position and adjust in 1/16 inch increments until you reach

the desired productivity to use ratio. Setting will be closer to 1/8 inch for ne media and up to 3/4 inch for coarse media.

COMPARISON CHART

There isn’t necessarily a right or wrong way to remove a coating. The deciding factors would be speed and end result of the substrate you are stripping. 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.

Description

Speed

Surface

Profile

Surface

Removal

Hardness Bulk Density

Aluminum Oxide

Crushed Glass

Glass Beads

Silicon Carbide

Plastic Abrasives

Steel Shot

Steel Grit

Sharp, long lasting media for fast etching & profiling

Silica-Free, 100% recycled glass; efficient; economical stripping

Round, soda-lime glass produces bright, satin finish; minimizes stress on part

Very hard, aggressive cutting media; ideal for stone, glass, and hard surfaces

Soft media designed for automotive & aerospace applications

Carbon Steel, round spheres designed for polishing and peening

Angular, carbon steel for fast stripping & aggressive cleaning

Fast High Etch Yes 8 - 9

Medium-High

Etch

No Etch

Satin Finish

Very High

Etch

No Etch

Stripping

Slight 5 - 6

Yes 9 - 9.5

Slight 3 - 4

Very Fast

Fast

Medium

Fast

Medium

Medium No Etch No

Medium

Fast

High Etch Moderate

40 - 51

HRC

40 - 65

HRC

110 lbs/ft

100 lbs/ft

95 lbs/ft

90 lbs/ft

50 lbs/ft

230 lbs/ft

260 lbs/ft

Corn Cob

Walnut Shells

Blast Sand

Sugar Sand

Garnet

Soda Bicarbonate

Coal Slag

Organic, soft media ideal for soft surfaces such as wood

Angular, organic grit for mildly aggressive stripping without damage to surface

Angular, sharp edges that cut into substrate and leave an anchor profile

Round media used for cleaning and stripping surface

Angular hard abrasive commonly used in place of silica sand

Medium-sized abrasive used to blast smooth and strip suraced

Angular by-product of coal; used for removal of coatings from steel and concrete

Slow No Etch No 4 - 4.5

Medium

Slow

Medium

Fast

Medium

Fast

Very Fast

Slow No Etch No 2.5

Medium

Fast

Low Etch Very Slight 4.5 - 5

High Etch Yes 7

High Etch Yes 6 - 7

Very High

Etch

Yes 7.5 - 8.5

High Etch Yes 6 - 7

40 lbs/ft

50 lbs/ft

100 lbs/ft

85 lbs/ft

61 lbs/ft

85 lbs/ft

Towing Safety and Hookup Procedures

SAFETY CHECKLIST (Before you drive away)

 Trailer is evenly loaded.

 If carrying a pallet of media in the trailer, the water tank should always be lled to evenly distribute weight.

 Toolboxes are latched and secured.

 Compressor canopy is lowered and secured.

 Loose objects are secured down with ratchet straps.

 Fill funnel and accessories are put away.

 Hoses are coiled and secured.

TRAILER HOOKUP PROCEDURES

1. With the winding crank, lower the trailer onto the 2 5/16” ball hitch until the foot is just off the ground.

2. Ensure the hitch is latched, and safety pin behind the collar is installed.

3. On the foot, remove the pin, raise the drop foot, and pin it again at the highest setting.

4. Retract foot the rest of the way with the winding crank.

5. Hook up safety chains, crossing them to make a cradle.

6. Pull emergency brake clip out of its box.

7. Loop the emergency brake clip through the safety chain receiver.

8. Run this wire through the safety pin on the hitch, to prevent slack from dragging on the ground.

9. Plug the brake clip back into the its box.

10. Plug in lights and make sure they work.

Switching from Wet Blasting to Dry Blasting

BLAST WET, DRY, OR WITH SODA

There are some occasions where dry blasting is more appropriate than wet blasting, like if you have to use an abrasive

that oats in water or is water soluble (like plastic bead, walnut shell, or corn cob).

Here is how to prepare your machine for dry blasting.

1. Blast all media and water out of machine.

2. Remove ll cap.

3. Turn on air coolers and dryers.

4. Open air inlet valve halfway and let air circulate through machine for 5-7 min or until completely dry.

5. Put ll cap back on machine and pressurize tank.

6. Run air through the machine just like you were blasting for 2-3 min.

7. Shine light in machine to be sure all moisture is gone from the bottom.

8. If no moisture, ll with 1 bag of dry abrasive. Be sure there are no issues, and then ll the remainder of the way.

MOBILE MAINTENANCE

& BEST PRACTICES

PLEASE READ CAREFULLY BEFORE OPERATING

Best Practices for Maintaining your Mobile

Dustless Blasting® 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 under normal circumstances. However, if it gets changed accidentally, make sure you readjust it to 90 PSI.

PARKER VALVE (LOCATED NEAR IN CONTROL BOX) MAINTENANCE

It is time to service your parker valve when the shutoff time is longer than usual or the valve is not actuating properly. To

service the Parker Valve (located in the control box), follow these steps (Or checkout our reference page:

1. Depressurize the machine.

2. Label each endcap left or right.

3. Remove the 2 (two) screws and set endcaps aside.

4. Remove piston.

5. Lightly lubricate piston with supplied grease or install new piston.

6. Install or replace any damaged gaskets or O-rings.

7. Re-install both endcaps.

PRESSURE REGULATOR

You rarely have to adjust the pressure, because it is better to adjust with stand off distance. Occasionally you should lubricate the threads on this knob with a lubricant such as lithium grease or Never-Seez.

FILTER REGULATOR

You will nd the lter regulator on the left side of control box. Like the moisture trap, you should leave it cracked open so it can always drain. That way water will never get into your Parker valve.

CONDENSING FAN

The condensing fan cools the hot air that comes out of the compressor. You don’t really need the fan if you’re wet blasting, but it’s very important if you’re dry blasting. You should also turn it on when using a paint spray gun with your compressor.

MOISTURE TRAP (MT1 or MT2)

The moisture trap collects water from the air running through the system. Periodically drain it by opening the lever on the bottom. Alternately, you can barely crack open the lever on the bottom so it can constantly drain slowly — this way you’ll never forget! You won’t notice the minuscule difference in air pressure by cracking it open.

On the moisture trap, you will nd a regulator for the water pump. We pre-set these regulators to about 80-90 PSI. You may use the regulator for a painting setup, but be sure to return it to 80-90 PSI when you’re done.

WATER PUMP

Every 10-20 hours of blasting, check the torque settings on the various water pump bolts. This will ensure you don’t lose any air through the water pump, and get optimal performance.

VIBRATOR CONTROL VALVE

Also on the left side of your control box, you’ll nd a small brass petcock valve which 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" to the bottom of the tank.

Over time, you could experience abrasive buildup inside the pot which actually changes the harmonics of the pot. If you notice that the system is not feeding right anymore, you can adjust the valve (turn it off a bit). This slows the vibrator, allowing the pot to rattle more.

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 media from machine either by blasting it out or by removing the bottom ange, air inlet jet, and gasket, gure 13 and allow it to drain. Refer to the user’s manual for instructions on how to do this.

FLUSHING BLAST POT OUT

Regularly ushing 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 from bottom of machine.

3. Remove 2 “ears” from bottom of machine.

4. Remove air inlet jet (looks like a pilgrim hat).

5. Remove gasket.

6. Push casting and air hose out of the way.

7. Flush out inside of equipment with water.

8. Once nished, replace the gasket, inlet jet, and ears and bolts.

CHANGE OF ABRASIVE FLOW - Assuming proper Installation, air pressure, and abrasive.

Check media quality. Your machine is made to run with clean, high quality abrasive or media. Dirt will get muddy, clay will harden, etc.

Check blast nozzle. If foreign matter should accidentally enter the machine, a stoppage can occur.

Fully depressurize machine rst!

The air pressure gauge on machine is important and should be replaced when broken or inoperative, in order to sustain

productive and protable results.

BLASTING WEAR PARTS

Certain parts wear faster than others and will require regular maintenance and inspection depending on the method of blasting you are using as well as the abrasive you are blasting with. These items should be inspected for damage or wear,

and replaced every 400 hours if dry-blasting, or 2000 hours if wet-blasting.

Wear items include but are not limited to:

• Hardened Elbow Insert

• Hardened Air Inlet Jet

• Hardened Pipe

• Flat Backed Pinch Hose Coupling

Please call the manufacturer directly with any additional maintenance questions.

1-800-727-5707 | support@dustlessblasting.com

• Inlet Jet Gasket

• Elbow Insert Gasket

• Elbow Cap Gasket

• Nozzle

Compressor Maintenance

ROTAIR COMPRESSOR USER MANUALS

Full user manuals for the Rotair Compressors can be found in the Dustless Blasting® Academy online.

Rotair R185T4F 185 CFM Compressor DB500® Mobile S™, DB500® Mobile XL™

Rotair R300T4F 300CFM Compressor DB800

Rotair R425T4F 425CFM Compressor DB800

ROTAIR COMPRESSOR MAINTENANCE SCHEDULE

Filter replacement schedules for the 185CFM, 300CFM, and 425CFM Rotair compressors are the same. Below is a quick

reference for the maintenance schedule, but please refer to your user manual for complete instructions and more details.

1st Stage Compressor Air Filter and 2nd Stage Compressor Air Filter

• Replace every 500 hours.

• These should be checked and cleaned every 100 hours of work. You may need to be checked more often, up to a

daily basis, depending on the environment the machine runs in.

• They can be cleaned several times with compressed air, but never with water.

1st Stage Engine Air Filter and 2nd Stage Engine Air Filter

• Replace every 500 hours.

• These should be checked every 100 hours of work. You may need to be checked more often, up to a daily basis,

depending on the environment the machine runs in.

• They can be cleaned several times with compressed air, but never with water.

Mobile™

Mobile Dual™

Compressor Oil Filter

• Replace the lter after the rst 50 hours, and then every 500 hours after that.

• Compressor oil should be AW-46 or ISO-46 Hydraulic Oil.

Air Oil Separator Filter

• Replace after 2000 hours, depending on conditions.

Engine Oil Filter

• Replace after the rst 50 hours, and then every 500 hours after that.

Fuel Filter

• Replace every 500 hours or as needed.

Rotair compressor maintenance parts can be ordered from the Dustless Blasting® Online Store, or by calling FTG Equipment at 855-303-7900.

APT COMPRESSOR GENERIC PART NUMBERS

Engine Oil Filter NAPA #1348 Baldwin #B159

Engine Fuel Filter NAPA #3472 Baldwin #BF7921

Engine Oil Filter NAPA #6489 Baldwin #RS3549

KEEP FINS AND RADIATOR CLEAN

Depending on how often you use the machine, once every few weeks or once a month, you should ush out the radiator ns. You can pressure wash them from the outside in — it's not going to hurt anything, especially on the Rotair

compressors.

Some of our older machines come with APT compressors, on which the alternator is right behind the radiator. If you plan

to pressure wash the radiator ns on an APT compressor, simply put a piece of cardboard in front of the alternator to

protect it. You can always use compressed air instead, and not worry about protecting the alternator.

PROLONG THE LIFE OF AIR FILTER

All compressors have air intake lters, which are to be changed at regular service intervals. If you are not yet due for a change but notice your machine running poorly (i.e. losing pressure), you should check the air lter.

Simply remove the lter cartridge and shake excess dust or debris off. Using compressed air is too harsh on these lters as they are just made of paper. This will help the compressor maintain a good running pressure until it's time to change

the lter.

CONTACT NUMBERS FOR COMPRESSOR SUPPORT

For support and troubleshooting for your compressor, you can contact Dustless Blasting®, or contact the manufacturer of

your compressor. Your compressor type may vary depending on when you purchased your machine.

Rotair Compressors

FTG Equipment

Nick or Hank

855-303-7900

APT Compressors

1-800-465-4777

constructionparts@ca.atlascopco.com

Sullivan Palatek Compressors

Josh Thompson

jthompson@palatek.com

603-520-7683

Containment, Masketing, and Nozzle Control

CONTAINMENT

First, you’ll need a way to capture the blasting byproducts. Some heavy plastic or a tarp will do ne. Lay out your plastic and weigh the corners down, placing your project in the center. With Dustless Blasting®, most of the spent abrasive will

fall down and be grounded beneath whatever you’re blasting, however, pieces of abrasive with momentum can y some

distance unless you break that momentum.

In most cases, you can just sweep up whatever media doesn’t land on the tarp or plastic, but if you’re in a more delicate place or situation, you’ll want to set up some simple curtains or barriers. If you don’t want to set up a barrier to stop the media’s momentum, simply lay out a larger area of plastic.

MASKING

You’ll want to mask off any delicate parts, such as 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. Gorilla tape works the best for protecting small parts and pieces. Duct tape can also work, but sometimes leaves adhesive behind once you remove it.

Wheels can also be blasted without masking in most cases, just don’t dwell on the rubber, or get too close. Of course this only applies when Dustless Blasting®. If you’re dry blasting it’s nearly impossible to avoid damaging rubber and wire insulation.

NOZZLE CONTROL

Dustless Blasting With clever positioning, you can avoid certain areas without having to seal them off. By moving the nozzle farther away from whatever you wish to avoid, you are able to strip the surface without damage. Pro tip: There’s no need to adjust the blast pressure for every little delicate object. Backing the nozzle farther away has the same effect. As you get a better feel for blasting this will become second nature.

is very directional. You can avoid blasting certain areas, simply by blasting at an angle away from it.

NOZZLE KNOWLEDGE

SLV Nozzle

• Wide spray pattern, like a shotgun

• Large blast pattern with a “hot spot” in the center

ST Nozzle

• Straight bore nozzle

• More precision blast pattern

• Like a rie instead of a shotgun

Fan Nozzle

• Spreads blast pattern out to cover a rectangular area

• Perfect for brush blasting

• Low impact compared to other nozzles

HV Nozzle

• Pulls ambient air in at the nozzle to give it an extra “kick”

• Great for soda blasting

XL Performance Nozzle

• Speeds the blast velocity up a the nozzle

• Great if you need a bit more performance from your compressor

CLEANUP

At the end, it’s time to clean up the waste. Depending on how much media you used, your plastic may be too heavy to move all at once. Cut it into sections and roll it up to make it manageable. Pro tip: If you have a few hours to let the water evaporate even more, the cleanup will be much lighter and easier.

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 ange of machine.

3. Remove 2 “ears” from bottom ange.

4. Push casting and air hose out of the way.

5. Remove air inlet jet (looks like a pilgrim hat).

6. Remove gasket.

7. Flush out inside of equipment with water.

Once media and water are out of machine, reverse procedure:

1. Put gasket on air inlet jet.

2. Insert air inlet jet and gasket.

3. Put casting up to bottom of machine.

4. Use ears and bolts to secure casting.

Blasting in the Winter

STORING MACHINE IN WINTER

If storing your machine for the winter months, it is advised to take the following precautions to prevent damage from freezing.

• Open all of the ball valves on your unit to prevent moisture from freezing and expanding in the valve.

• Open water pump drain plug so water inside has room for expansion.

• Instead of draining leftover material from the blast pot, take the two bolts off of the ange and the bottom of the machine where the air inlet body connects. Leave this loose overnight. In the event that it freezes, it will be easy

to ush out the frozen water and media.

WINTER BLASTING

If wet blasting in the winter time, follow the guidelines below.

• At 32°F add rubbing alcohol to the water tank at roughly a 1:100 gallon ratio.

The colder it is, the more alcohol you will need to add, up to 1:20 ratio.

• Cover the blast pot and use a space heater to keep the pot warm.

• If you can, move the blast pot inside.

• Tent around the pot, pump and moisture separator and place a heater inside to keep warm.

• When nished blasting be certain to empty tank and blow out hoses to keep from freezing up.

Removing the Blast Pot from the Trailer

PROCEDURES FOR REMOVAL

You will want to unload the blast pot while it is empty of media or water. Use caution when removing from the trailer, as

the blast pot is very heavy.

To remove blast pot from trailer:

1. Make sure all water pressure and air pressure has been released from the blast pot.

2. Remove any remnant media or water from the blast pot.

3. Disconnect the air hose, electrical power line, and water inlet hose from blast pot.

4. Remove bolts and washers that connect the blast pot to the trailer. The bolts have a thread-locker applied, and

may require heating up before loosening. Be sure to put these in a safe place so you can nd them when it is time to

put the blast pot back on the trailer.

5. Carefully and with team effort – remove the empty blast pot from the trailer.

6. You will need to extend your current air hose and electrical power line with extensions as needed and reconnect

them to your blast pot.

7. We recommend using a water hose to ll your blast pot instead of extending the water inlet hose.

To load blast pot back onto trailer after work is complete:

1. Make sure all water pressure and air pressure has been released from the blast pot

2. Completely empty out the blast pot of remnant water and media

3. Disconnect the air hose and electrical power line from blast pot.

4. Carefully and with team effort – place the empty blast pot back onto the trailer. This may be difcult as the blast

pot is very heavy.

5. Once on the trailer and in the correct position. Add a thread-locker to the mounting bolt threads, and install the

mounting bolts and washers that connect the blast pot to the trailer. Torque these mounting bolts to approximately

75 lb-ft.

6. Reconnect the air hose, electrical power line, and water inlet hose to the blast pot

7. Any threaded ttings removed will require a thread sealing compound or tape upon re-installation.

8. Remember to save and re-install any safety-clips that may have been removed during blast pot removal.

Pinch Hose Maintenance Guide

Around every 10-15 hours of blasting, we recommend rotating the pinch hose. At this time a visual inspection should be

performed to insure integrity. Look at and feel it carefully for signs of wear, softness, or bulges. Replace pinch hose before

it fails. We recommend replacement after about 40 hours of use, or after you have rotated it 4 times.

The pinch hose can be rotated and positioned in 4 ways:

1. Starting position 3. Flip hose around

2. Rotate hose 180º 4. Rotate hose 180º again

Rotate Hose 1800 Flip Hose Around

TO REMOVE BRASS COUPLINGS FROM OLD HOSE:

1. Lock hose in vice and remove screw using a phillips head screwdriver or drill.

2. Unscrew the brass coupling from hose turning counter-clockwise. You may need a bar or rod to do this.

TO ATTACH BRASS COUPLINGS TO NEW PINCH HOSE:

1. Wrap the end of the hose in several layers of friction tape, a little beyond the point the brass will cover.

2. Place coupling over friction tape and hose, screwing clockwise until hose end pushes against inside brass ridge of coupling. You may need a bar or rod to get it tight.

3. Wrap screws with Teon tape and screw into designated holes until tight.

REFER TO RESOURCES PAGE (Page ??) TO ACCESS VIDEO INSTRUCTIONS OF MAINTENANCE.