DUSTLESS BLASTING MOBILE S DB500 User manual

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
[email protected]
Email
713-868-8041
Fax
[phone]
International
Facebook.com/DustlessBlaster
@DustlessBlaster
Youtube.com/MMLJManufacturing
Dustless_Blasting
800-727-5707
Toll Free

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
Towing Safety and Hookup Procedures 14
Mobile Maintenance and Best Practices 15
Best Practices for Maintaining your Mobile 16
Pinch Hose Maintenance Guide 17
Compressor Maintenance 18
Troubleshooting 19
Storing Machine 21
Cold Weather Considerations 21
Removing Blast Pot from Trailer 22
Resources and Training 23
Service Recorder 24
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.

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 (SILICA)
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 control of the nozzle at all times during
operation.
• INSPECT machine, nozzles, hoses, and couplings.
• 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 (SILLCEAS)
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.
I

II
MOBILE EQUIPMENT 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. This warranty extends only to
you, the original purchaser. It is not transferable to anyone who subsequently purchased the product from you.
During the warranty period, MMLJ, Inc. will repair or replace (at MMLJ, Inc.’s option) the product if it becomes defective or otherwise
fails to conform to this Warranty under normal use. In repairing the product, MMLJ, Inc. may replace defective part with new, or at the
option of MMLJ, Inc., serviceable used parts that are equivalent to new parts in performance. MMLJ, Inc. 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, Inc.’s customer service representative.
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, Inc. 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, Inc. 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.
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.
This Limited Warranty does not extend to any product that has been damaged or rendered defective (a) as a result of lack of
maintenance, accident, misuse, or (b) abuse by the use of parts not manufactured or sold by MMLJ, Inc. and/or (c) by modication or
improper installation of the product.
IMPORTANT: Third Party Warranties
For parts 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.

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 [phone]:
The Rotair compressor used as part of a Dustless Blasting® mobile unit is covered under the ELGI 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 ELGI warranty registration on your behalf.
Please refer to the ELGI Product Limited Warranty for more information regarding your compressor warranty. Visit www.
DustlessBlasting.com/legal/warranties to view the full warranty of this product.
TEXTRAIL TRAILER PARTS TIRE FOUR YEAR WARRANTY [phone]:
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.
ALL-FLO WATER PUMP FIVE YEAR WARRANTY [phone]:
The All-Flo water pump 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 water pump warranty. Visit www.DustlessBlasting.com/
legal/warranties to view the full warranty of this product.
AXLE MANUFACTURE WARRANTY:
Axles used as part of a Dustless Blasting® mobile unit is covered under the manufacture axle Limited Warranty. The axles are not a
product of MMLJ, Inc. and MMLJ, Inc. will not be held responsible for the repair or replacement of said product.
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: [phone] | [email protected]
III
Rockwell Warranty
Warranty Service Provided through our Nationwide
Distribution Locations
Visit www.rockwellamerican.com for more information
Lippert Warranty
Scan QR Code
for more
information

1
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.

2
1
6
2
12
13
17
18
7
3
19
8
44
9
5
10
16 15
14
11
DB500®OVERVIEW
DB500®MOBILE S™ & DB500®MOBILE XL™ 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. Abrasive Lever
12. Vibrator
13. Bottom Flange
14. Overow Valve
15. Pinch Valve
16. Abrasive Control Knob
17. Vibrator Valve
18. 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
MODEL DB500®

3
DB500®MOBILE S™
DB500®MOBILE XL™
9
14 22
23
21
20 2524
4
9 4
2223
2524 21
14 205
5

4
1
6
2
12
13
17
18
7
3 19
8
4
4
9
5
10
16 15
14
11
MODEL DB800®
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. Abrasive Lever
12. Vibrator
13. Bottom Flange
14. Overow Valve
15. Pinch Valve
16. Abrasive Control Knob
17. Vibrator Valve
18. Moisture Trap
19. Abrasive Adjustment Mark
DB800®MOBILE™ & DB800®MOBILE DUAL™ OVERVIEW
20. Water Inlet Valve
21. Water Pump
22. MT2 Drain
23. Service Valves
24. Water Tank Valve
25. Water Storage Tank
IMPROPER HANDLING OF INDUSTRIAL-STRENGTH BLASTING EQUIPMENT CAN RESULT IN SERIOUS INJURY OR DEATH.
BEFORE HANDLING, CAREFULLY READ ALL FACTORY-SUPPLIED MANUALS. FOR ADDITIONAL COPIES, CONTACT MMLJ, INC.

DB800®Mobile™
DB800®Dual Mobile™
5
9
9
4
4
22
22
22
23 24
24
24 2523 21
21
14
14
20
20
5
525
25

6
39
40
38
44
44
42
42
43
41
45
45A
45B
45C
45A
45B
46
47
48
55H
55D
55K
55L
55M
55N
55T
55U
53
54
52
51
46A
46A
37
35
35
36
55M
55G
56
55D
55E
55F
55A
55B
55C
55P
55Q
55D
55R
55S
55J
55
CONNECT ITEM 53 TO ITEM 37.
CONNECT ITEM 54 TO ITEM 56.
DB500®/DB800®Diagram
FOR ILLUSTRATIVE PURPOSES ONLY. SUBJECT TO MINOR
CONFIGURATION ALTERATIONS AS DEEMED NECESSARY BY
MANUFACTURER.

7
1E
1D
1C
1B
1A
1
2
16
30
32
31
29
23
22
22
23
21
20
NOTE:
ITEMS 24, 25 & 26
ARE INSTALLED ON
THE INSIDE OF
TANK.
25
1F
3
4
5
33
33A
33B
33D
33F
33G
33H
33C
33E
33J
33K
17
18
19
34
5A
24
26
27
28
13
11
10
11
6
12
15
15A
15A
9
8
7
14
14
28
31
30A
27
28
31
31
30
30D
30E
30C
30B
27A
DB500®/DB800®Diagram
FOR ILLUSTRATIVE PURPOSES ONLY. SUBJECT TO MINOR
CONFIGURATION ALTERATIONS AS DEEMED NECESSARY BY
MANUFACTURER.

8
Item No. Description Part No. Stock No. Qty.
1 Outlet Elbow Assembly Complete M-17 72974/001 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 Abrasive Lever Adjusting Screw AB-8 73464/001 1
7 Abrasive Lever 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 Abrasive Lever 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 Abrasive Lever Acorn Nut (5/8”-11) AB-8-N 134687/002 1
13 Abrasive Lever 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 Hardened Inlet Nozzle (5/8”) 134356/002 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 23879/005 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 133838/001 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 Valve 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 - 4 Lug 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
9

11
GETTING STARTED
START UP & SHUT DOWN PROCEDURES
YOUR SAFETY IS IMPORTANT TO US. CAREFULLY READ ALL INSTRUCTIONS BEFORE BLASTING. IMPROPER HANDLING CAN RESULT IN
DAMAGE TO MACHINE, SERIOUS INJURY, OR DEATH TO OPERATOR OR BYSTANDERS.

12
Connect Electric LineConnect Blast Hose
STEP 1. Connecting blast hose and electric line
Connect the blast hose to the pinch hose at the top of the
blast pot and insert the safety pins (there should be 2).
Connect the electric line of your red head controller to the
control box on the back of the blast pot.
Getting Started
STEP 2. Open path from water tank to blast pot
The water storage tank must be lled before you can start
lling your blast pot. Once the tank is lled, open the water
tank valve, the water inlet valve, and the overow valve.
You will need to turn on the compressor before you can
activate the water pump to ll the blast pot.
STEP 4. Filling the blast pot with water
Once these valves are all opened and your compressor is
turned on and warmed up, you are ready to activate the
water pump. To do this, turn on the cooler fan by ipping
the toggle switch located on the back of the fan unit.
Next, open the Air Pilot Valve on the MT1 (DB500) or MT2
(DB800), 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.
Open Water Tank Valve
Open Water Inlet Valve Open Overow Valve
Open Air Pilot Valve
Open Service Valve
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.
STEP 3. Starting the compressor
Before turning on your compressor, make sure the service
valves are in the closed position. Start the compressor
according to the manufacturers instructions.
ALWAYS WEAR APPROPRIATE PROTECTIVE EQUIPMENT WHILE MAINTAINING OR OPERATING BLASTING EQUIPMENT. NEVER ATTEMPT
MAINTENANCE ON PRESSURIZED EQUIPMENT. ALWAYS INSPECT MACHINE, NOZZLES, HOSES, AND COUPLINGS PRIOR TO BLASTING.
CAREFULLY READ ALL BLAST POT AND
COMPRESSOR INSTRUCTIONS BEFORE BLASTING. WHEN FILLING THE WATER STORAGE TANK BEFORE TRAVELING,
ENSURE YOU IMPLEMENT A SAFE COUNTERWEIGHT TO EVENLY
DISTRIBUTE THE WEIGHT BALANCE.