Marco BLASTMASTER MAXUM III Manuale utente

Before using this equipment, read, understand and follow all instructions

in the Operator’s Manuals provided with this equipment. If the user and/

or assistants cannot read or understand the warnings and instructions,

the employer of the user and/or assistants must provide adequate and necessary training to

ensure proper operation and compliance with all safety procedures pertaining to this equipment. If

Operator’s Manuals have been lost, please visit www.marco.us, or contact Marco at 563.324.2519

for replacements. Failure to comply with the above warning could result in death or serious injury.

BLASTMASTER® MAXUM III

ABRASIVE METERING VALVE

OPERATOR’S MANUAL

Blastmaster®Maxum III Abrasive Metering Valve

Company Profile

Since 1944, Marco has developed a strong tradition of providing innovative and reliable products and services to the

surface preparation and protective coatings industries. We are the world’s premier provider of Abrasives, Blasting

Equipment, Coating and Painting Equipment, Engineered Systems, Rental Equipment, Safety Equipment,

Service, and Repair.

Through innovative designs and a total commitment to quality, Marco manufactures products that increase production

rates, create a safer workplace, and reduce maintenance costs. Marco’s industry experience, manufacturing capabili-

ties, legendary customer service, product availability, logistics services, and technology leadership is your assurance

that we deliver high quality products and services, providing the best value to you, our customer.

The Marco Difference

•

Industry Experience

– With Marco on your team, you have access to expertise which can only come from decades

of industry leadership. We have organized our engineering department, production specialists, customer operations,

and safety support into a “Center of Competence.” As a Marco customer, you have access to hundreds of years of

cumulative experience related to your operations.

•

Manufacturing Excellence

– Marco is a U.S. based, ISO 9001:2008 certified manufacturer of equipment for the

Surface Preparation and Protective Coatings industries. Marco’s engineers benchmark the industry to ensure that

we design and manufacture superior products that set the “Gold Standard” for performance, safety, and quality.

•

Legendary Customer Service

– Marco’s legendary customer service team is staffed by friendly, highly-trained

individuals who are focused on providing the highest level of product support, order accuracy, and customer

satisfaction.

•

Product Availability

– We stock over 10,000 SKU’s and have over 45 shipping locations to serve North American

and International markets for all major brands of blasting and painting equipment. As the largest provider of surface

preparation and protective coatings equipment in the world, our inventory levels and product availability are

unmatched.

•

Logistics Services

– Marco’s in-house logistics team is dedicated to moving your shipment anywhere in the world.

We move over 14,000 truckloads every year, allowing you to save on freight costs by leveraging our buying power.

Lower your process costs with a single invoice, which includes product and freight.

•

Technology Leadership

– Our website provides: Operator’s Manuals, Part Numbers and Schematics Guides,

MSDS information, and Features, Advantages, and Benefits Guides, providing access to information 24/7. Our

Extranet application allows you to receive quotes and place orders online. Our Intranet maintains a complete record

of your purchase history to assist with ongoing support of your existing equipment and future purchasing decisions.

Vision Statement

Marco is the world’s premier provider of Abrasives, Blasting Equipment, Coating and Painting Equipment,

Engineered Systems, Rental Equipment, Safety Equipment, Service, and Repair.

Mission Statement

Marco provides strong leadership and innovation to the surface preparation and protective coatings industries We

dedicate our efforts to the continuous improvement of our products, services, processes, people, and most importantly,

the quality of our customer’s experience.

Quality Policy

Marco is committed to providing superior quality in the design, manufacturing, distribution, rental, service, and repair of

our products. Our ISO 9001:2008 certication extends throughout all operations in all locations. Continuous improve-

ment of our processes and supply chain Integration comprise the core of our business strategy for delivering excep-

tional quality and value in all Marco products and services.

Management Philosophy

We are a company dedicated to the success of every customer and associate. We discuss, debate, challenge, mea-

sure, and test our ideas. We will be boundless and limitless in our passion to improve. Through sound leadership and

dedicated associates, we will ensure a long term, protable future for Marco, our associates, customers, and suppliers.

Blastmaster®Maxum III Abrasive Metering Valve 2

Company Prole . . . . . . . . . . . . . . . . . . . . . . . . . 1

Operating Instructions . . . . . . . . . . . . . . . . . . . 9

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operational Requirements . . . . . . . . . . . . . . . . . 9

Operating Instructions . . . . . . . . . . . . . . . . . . 10

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operating Instructions . . . . . . . . . . . . . . . . . . 11

Operating Instructions . . . . . . . . . . . . . . . . . . . 11

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Disassemble and Assemble Blastmaster®

Maxum III Abrasive Metering Valve –

Tungsten Carbide Sleeve . . . . . . . . . . . . . . . . . 13

Disassemble and Assemble Blastmaster®

Maxum III Abrasive Metering Valve –

Urethane Sleeve. . . . . . . . . . . . . . . . . . . . . . . . 15

Disassemble and Assemble Blastmaster®

Maxum III Abrasive Metering Valve –

Tungsten Carbide Sleeve — 2” . . . . . . . . . . . . 17

Disassemble and Assemble Blastmaster®

Maxum III Abrasive Metering Valve –

Urethane Sleeve — 2” . . . . . . . . . . . . . . . . . . . 19

TABLE OF CONTENTS

DEFINITION OF TERMS

This is an example of a warning. This indicates a

potentially hazardous situation which, if not avoided,

could result in death or serious injury.

This is an example of a notice. This indicates policy

or practice directly related to safety of personnel or

protection of property.

This is an example of danger. This indicates an

imminently hazardous situation which, if not avoided, will

result in death or serious injury.

This is an example of a caution. This indicates a

potentially hazardous situation which, if not avoided,

may result in minor or moderate injury. It can also be

used to alert against unsafe practices.

Assembly Part Numbers and Schematics 21

Blastmaster®Maxum III Abrasive Metering

Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Blastmaster®Maxum III Abrasive Metering

Valve – Urethane Sleeve . . . . . . . . . . . . . . . . . 23

Blastmaster®Maxum III Abrasive Metering

Valve — Tungsten Carbide Sleeve — 2” . . . . . 25

Blastmaster®Maxum III Abrasive Metering

Valve — Urethane Sleeve — 2” . . . . . . . . . . . . 27

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . 30

Disclaimer of Warranty . . . . . . . . . . . . . . . . . . . 30

Exclusive Remedy for Warranty Claims . . . . . . 30

Limitation of Remedies . . . . . . . . . . . . . . . . . . . 30

Blastmaster®Maxum III Abrasive Metering Valve

Failure to comply with ANY WARNING listed below could result in death or serious injury.

OSHA sets exposure limits to protect workers from exposure to respirable crystalline silica, 29 CFR 1910.1053.

Airborne dust could increase the exposure levels beyond permissible limits. Breathing dust containing silica

could cause silicosis, a fatal lung disease. Breathing dust during abrasive blasting operations, post-blast cleaning

operations, and/or servicing equipment within the abrasive blasting area may expose an individual to conditions

that could cause asbestosis, lead poisoning and/or other serious or fatal diseases. Harmful dust containing toxic

material from abrasives or surfaces being abrasive blasted can remain suspended in the air for long periods of

time after abrasive blasting has ceased. A NIOSH-approved, well-maintained, respirator designed for the specific

operation being performed must be used by anyone abrasive blasting, handling or using the abrasive, and

anyone in the area of the dust.

Contact NIOSH and OSHA offices to determine the proper respirator for your specific application. The air supplied

to the respirator must be at least Grade D quality as described in Compressed Gas Association Commodity

Specification G-7.1 and as specified by OSHA Regulation 1910.134. Ensure air filter and respirator system hoses

are not connected to non-air sources or in-plant lines that may contain nitrogen, oxygen, acetylene or other

non-breathable gases. Before removing respirator, use an air monitoring instrument to determine if the

atmosphere is safe to breathe.

You must comply with all OSHA, local, City, State, Province, Country and jurisdiction regulations, ordinances and

standards, related to your particular work area and environment. Keep unprotected individuals out of the work

area.

Abrasive blasting operators must receive thorough training on the use of abrasive resistant attire which includes:

supplied-air respirator, abrasive blasting suit, safety shoes, gloves, ear protection and eye protection. Protect the

operator and bystanders by complying with NIOSH and OSHA Safety Standards.

Inspect all equipment for wear or damage before and after each use. Failure to use Original Equipment

Manufacturer repair parts and failure to immediately replace worn or damaged components could void warranties

and cause malfunctions.

OSHA requires abrasive blasting nozzles be equipped with an operating valve, which shall be designed to be

held open only by continuous hand pressure and shall close immediately upon release of hand pressure (i.e., a

“deadman” control). The valve shall not be modified in any manner that would allow it to remain open without the

application of continuous hand pressure by the operator. Failure to comply with the above warning could result in

release of high speed abrasive and compressed air resulting in death or serious injury. OSHA 29CFR 1910.244(b)

Point the abrasive blasting nozzle only at the surface being abrasive blasted. Never point the abrasive blasting

nozzle or abrasive stream at yourself or others.

Unless otherwise specified, maximum working pressure of abrasive blasting pots and related components must

not exceed 150 psi. Exceeding maximum working pressure of 150 psi could cause the abrasive blasting pot and

components to burst. Failure to comply with the above warning could result in death or serious injury.

Never weld, grind or drill on the abrasive blasting pot (or any pressure vessel). Doing so will void ASME

certification and manufacturer’s warranty. Welding, grinding or drilling on the abrasive blasting pot (or any pressure

vessel) could weaken the vessel causing it to burst. Failure to comply with the above warning could result in death

or serious injury. (ASME Pressure Vessel Code, Section VIII, Division 1)

This equipment is not intended for use in any area that might be considered a hazardous location, as described

in the National Electric Code NFPA 70, Article 500. Use of this equipment in a hazardous location could cause an

explosion or electrocution.

Never attempt to move an abrasive blasting pot containing abrasive. Never attempt to manually move abrasive

blasting pots greater than 6.5 cubic foot capacity. Always use at least two capable people to manually move an

abrasive blasting pot on flat, smooth surfaces. A mechanical lifting device must be used if an abrasive blasting pot

is moved in any other manner.

HAZARD IDENTIFICATIONS

Blastmaster®Maxum III Abrasive Metering Valve 4

HAZARD IDENTIFICATIONS

Failure to comply with ANY WARNING listed below could result in death or serious injury.

This product is not for use in wet environments. Always use a Ground Fault Interrupter Circuit (GFIC) for

all electrical power source connections. Use of this product in wet environments could create a shock or

electrocution hazard.

Frozen moisture could cause restrictions and obstructions in pneumatic control lines. Any restriction or

obstruction in the pneumatic control lines could prevent the proper activation and deactivation of the remote

control system, resulting in the release of high speed abrasive and compressed air. In conditions where moisture

may freeze in the control lines an antifreeze injection system approved for this application can be installed.

Do not cut, obstruct, restrict or pinch pneumatic control lines. Doing so could prevent the proper activation and

deactivation of the remote control system, resulting in the release of high speed abrasive and compressed air.

Use of Marco remote control switches with other manufacturer’s remote control systems could cause unintended

activation of remote control systems resulting in the release of high speed abrasive and compressed air. Only

Marco remote control switches should be used with Marco remote control systems.

Always be certain to have secure footing when abrasive blasting. There is a recoil hazard when abrasive blasting

starts that may cause user to fall and misdirect the abrasive stream at operator or bystander.

Never use an abrasive blasting pot or attachments as a climbing device. The person could slip and fall. The

abrasive blasting pot could become unstable and tip over.

For equipment manufactured by entities other than Marco, you must consult the Original Equipment Manufacturer

operator’s manuals, information, training, instructions and warnings, for the proper and intended use of all

equipment.

Flammable fumes, such as solvent and paint fumes in the work area can present an ignition or explosion hazard

if allowed to collect in adequate concentrations. To reduce conditions that could result in a fire or an explosion,

provide adequate ventilation, eliminate all ignition or spark sources, keep the work area free of debris, store

solvents and solvent contaminated rags in approved containers, follow proper grounding procedures, do not

plug/unplug power cord or turn on/off power switches when flammable fumes are present, keep a working fire

extinguisher or provide another fire suppression system in the work area. Cease all operations and correct

condition if a spark or ignition source is identified during operation.

Always depressurize the entire system, disconnect all power sources and lockout/tagout all components before

any maintenance or troubleshooting is attempted. Failure to comply with the above warning could cause electrical

shock and inadvertent activation of equipment resulting in death or serious injury.

Moving parts can present an area where crushing, pinching, entanglement or amputation may occur. Do not

place body parts or foreign objects in any area where there are moving parts.

Surfaces of heated supply tanks, drums and/or lines as well as the adjoining plumbing may become hot during

normal use. Do not touch these heated surfaces without proper protection. Deactivate and allow sufficient time for

all surfaces to cool before attempting any maintenance.

High-pressure fluid from gun, hose leaks, or ruptured components can pierce skin and can cause a serious injury

that may result in amputation. Do not point gun or spray tip at anyone or at any part of the body. Keep clear

of any leaks or ruptures. Depressurize the entire system before attempting cleaning, inspecting, or servicing

equipment.

Exposure to toxic fluids or fumes may occur during the normal operation of this system. Before attempting to

fill, use, or service this system, read SDS’s to know the specific hazards of the fluids you are using. Always use

proper Personal Protective Equipment when attempting to fill, use, or service this system.

The use of this product for any purpose other than originally intended or altered from its original design is

prohibited.

Never hang objects from the abrasive blasting pot handle. Doing so may cause the abrasive blasting pot to

become unstable and tip over.

Blastmaster®Maxum III Abrasive Metering Valve

HAZARD IDENTIFICATIONS

Failure to comply with ANY CAUTION listed below may result in minor or moderate injury.

Static electricity can be generated by abrasive moving through the abrasive blasting hose causing a shock

hazard. Prior to use, ground the abrasive blasting pot and abrasive blasting nozzle to dissipate static electricity.

High decibel noise levels are generated during the abrasive blasting process which may cause loss of hearing.

Ensure appropriate Personal Protective Equipment and hearing protection is in use.

Failure to comply with ANY NOTICE listed below could pose a hazard to personnel or property.

See Air & Abrasive Consumption Chart for estimated abrasive consumption rates and required air flow (cubic feet

per minute). Your system must meet these minimum requirements to ensure proper function and performance.

Always use abrasive that is dry and properly screened. This will reduce the potential for obstructions to enter the

remote control system, abrasive metering valve and abrasive blasting nozzle.

Moisture build-up occurs when air is compressed. Any moisture within the abrasive blasting system will cause

abrasive to clump, clogging metering valves, hoses and nozzles. Install an appropriately sized moisture separator

at the inlet of the abrasive blasting system. Leave the moisture separator petcock slightly open to allow for

constant release of water. If insufficient volume of air exists and petcock is unable to be left open (at all times)

petcock should be opened frequently to release water.

To reduce abrasive intrusion in the air supply hose, depressurize the abrasive blasting pot before shutting off air

supply from compressor.

Inspect abrasive blasting nozzle before placing into service. Damage to abrasive blasting nozzle liner or

jacket may occur during shipping. If you receive a damaged abrasive blasting nozzle, contact your distributor

immediately for replacement. Abrasive blasting nozzles placed into service may not be returned. Abrasive blasting

nozzle liners are made of fragile materials and can be damaged by rough handling and striking against hard

surfaces. Never use a damaged abrasive blasting nozzle.

Abrasive blasting at optimal pressure for the abrasive used is critical to productivity. Example: For an abrasive

with an optimal abrasive blasting pressure of 100 psi at the abrasive blasting nozzle, one pound per square inch

of pressure loss will reduce abrasive blasting efficiency by 1.5%. A 10 psi reduction in air pressure will cause a

15% loss of efficiency. Use a Needle Pressure Gauge to identify pressure drops in your system. Consult with your

abrasive supplier for the requirements of your abrasive.

Replace abrasive blasting nozzle if liner or jacket is cracked or damaged. Replace abrasive blasting nozzle if

original orifice size has worn 1/16” or more. Determine abrasive blasting nozzle wear by inserting a drill bit 1/16”

larger than original size of abrasive blasting nozzle orifice. If the drill bit passes through abrasive blasting nozzle,

replacement is needed.

Blastmaster®Maxum III Abrasive Metering Valve 6

Failure to comply with ANY NOTICE listed below could pose a hazard to personnel or property.

See Air & Abrasive Consumption Chart for estimated abrasive consumption rates and required air flow

(cubic feet per minute). Your system must meet these minimum requirements to ensure proper function and

performance.

When it comes to air & abrasive mixtures, more is not necessarily better. Optimum abrasive blasting efficiency

takes place when a lean air & abrasive mixture is used. To correctly set the abrasive metering valve, begin

with the valve fully closed and slowly increase the amount of abrasive entering the airstream. As you increase

the abrasive flow, watch for a “blue flame” at the exit of the abrasive blasting nozzle. Faster cutting, reduced

abrasive consumption and lower clean up costs, are benefits of the “blue flame”.

Abrasive blasting at optimal pressure for the abrasive used is critical to productivity. Example: For an abrasive

with an optimal abrasive blasting pressure of 100 psi at the abrasive blasting nozzle, one pound per square inch

of pressure loss will reduce abrasive blasting efficiency by 1.5%. A 10 psi reduction in air pressure will cause a

15% loss of efficiency. Use a Needle Pressure Gauge to identify pressure drops in your system. Consult with

your abrasive supplier for the requirements of your abrasive.

*Abrasive consumption is based on abrasive with a bulk density of 100 lbs per Cubic Foot

Air & Abrasive Consumption Chart*

Nozzle

Orifice

Pressure at the Nozzle (PSI) Air (in cfm), Abrasive

& Compressor

Requirements

50 60 70 80 90 100 125 140

No. 2

(1/8ˮ)

2.5

3.5

101

112

4.5

123

152

5.5

170

6.2

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 3

(3/16ˮ)

150

171

196

216

238

264

319

357

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 4

(1/4ˮ)

268

312

354

408

448

494

608

110

681

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 5

(5/16ˮ)

468

534

101

604

113

672

126

740

137

812

168

982

188

1100

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 6

(3/8ˮ)

108

668

126

764

143

864

161

960

173

1052

196

1152

237

1393

265

1560

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 7

(7/16ˮ)

147

896

170

1032

194

1176

217

1312

240

1448

254

1584

314

1931

352

2163

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 8

(1/2ˮ)

195

1160

224

1336

252

1512

280

1680

309

1856

338

2024

409

2459

458

2754

101

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 10

(5/8ˮ)

308

1875

68.5

356

2140

79.5

404

2422

452

2690

100.5

504

2973

112

548

3250

122

663

3932

146

742

4405

165

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

No. 12

(3/4ˮ)

432

2672

504

3056

112

572

3456

127

644

3840

143

692

4208

154

784

4608

174.5

948

5570

209

1062

6238

236

Air (cfm)

Abrasive (lbs/hr)

Compressor Horsepower

Inspect abrasive

blasting nozzle before

placing into service.

Damage to abrasive

blasting nozzle liner

or jacket may occur

during shipping. If you

receive a damaged

abrasive blasting nozzle,

contact your distributor

immediately for

replacement. Abrasive

blasting nozzles placed

into service may not

be returned. Abrasive

blasting nozzle liners

are made of fragile

materials and can be

damaged by rough

handling and striking

against hard surfaces.

Never use a damaged

abrasive blasting nozzle.

Replace abrasive

blasting nozzle if liner

or jacket is cracked

or damaged. Replace

abrasive blasting nozzle

if original orifice size

has worn 1/16” or more.

Determine abrasive

blasting nozzle wear by

inserting a drill bit 1/16”

larger than original size

of abrasive blasting

nozzle orifice. If the

drill bit passes through

abrasive blasting nozzle,

replacement is needed.

“Blue Flame”

AIR & ABRASIVE CONSUMPTION CHART

Blastmaster®Maxum III Abrasive Metering Valve

“THE BIG PICTURE”

1615

424

Blastmaster®Maxum III Abrasive Metering Valve 8

Daily Pre-operation Checklist

1. Abrasive

2. Air Compressor

3. Air Hose Couplings & Gaskets

4. Air Hose

5. Safety Cable

6. Ambient Air Pump*

7. Breathing Air Filter

8. CO Monitor

9. Breathing Line

10. Climate Control Device

11. Abrasive Blasting Suit

12. Gloves

13. Abrasive Blasting Nozzle

14. Lighting System*

15. Abrasive Blasting Nozzle Holder

16. Remote Control Switch

17. Supplied-Air Respirator

18. Control Line

19. Abrasive Blasting Hose

20. Abrasive Blasting Hose

Couplings & Gaskets

21. Abrasive Metering Valve

22. Remote Control System

23. Moisture Separator

24. Abrasive Blasting Pot Exhaust

Muffler

25. Abrasive Blasting Pot

26. Abrasive Blasting Pot Screen

27. Abrasive Blasting Pot Lid

28. Aftercooler*

* Optional or alternative device.

Ask your Marco Representative

for more details.

Abrasive – Select the correct Abrasive (1) for the application. Review the SDS

(Safety Data Sheet) to ensure the correct PPE (Personal Protective Equipment)

and Environmental Controls have been selected and are in place.

Air Compressor – Select an Air Compressor (2) of adequate size to support all

equipment requirements. Refer to “Air & Abrasive Consumption Chart” for

Abrasive Blasting Nozzle (13) air consumption requirements. Before connecting

Air Hose (4), sample the air being produced by the air compressor (2) to ensure

it is free of petroleum contaminants.

Air Hose, and Air Hose Couplings & Gaskets – Select Air Hoses (4) of

sufficient size to support all subsequent volumetric requirements and with a

sufficient PSI (pound per square inch) rating. Inspect all Air Hoses (4), and Air

Hose Couplings & Gaskets (3) for damage or wear. Repair or replace damaged

or worn components.

Abrasive Blasting Hose, Abrasive Blasting Hose Couplings & Gaskets, and

Abrasive Blasting Nozzle Holder – Select an Abrasive Blasting Hose (19) that

has an inner diameter 3 to 4 times larger than your Abrasive Blasting Nozzle

(13). Inspect Abrasive Blasting Hose (19), Abrasive Blasting Hose Couplings

& Gaskets (20), and Abrasive Blasting Nozzle Holder (15) for damage or wear.

Repair or replace damaged or worn components.

Safety Cables – Install a Safety Cable (5) at each Abrasive Blasting Hose (19),

and Air Hose (4) connection points.

Aftercooler and Moisture Separator – Ensure Aftercooler (28) is positioned

on stable ground. Keep petcock drain of Moisture Separator (23) slightly open

during use. Drain both devices after each use.

Supplied-Air Respirator, Breathing Line, Breathing Air Filter, Climate

Control Device, CO Monitor, Ambient Air Pump – You MUST consult the

Operator’s Manual supplied with your Respiratory Equipment (6, 7, 8, 9,

10, 17) for ALL applicable instructions and warnings. Inspect all Respiratory

Equipment components for damage or wear. Repair or replace damaged or worn

components.

Abrasive Blasting Suit and Gloves – Select an abrasive-resistant Abrasive

Blasting Suit (11) that is slightly oversized to allow ease of movement and allows

air to flow around your body. Select abrasive-resistant Gloves (12) with a tight fit

and a long cuff that overlaps the sleeve of the Abrasive Blasting Suit (11).

Abrasive Metering Valve and Abrasive Blasting Pot – Confirm Abrasive

Blasting Pot (25) is positioned on stable ground. Inspect Abrasive Blasting Pot

(25) and Abrasive Metering Valve (21) for damage or wear. Repair or replace

damaged or worn components.

Abrasive Blasting Pot Screen and Abrasive Blasting Pot Lid – Always use

an Abrasive Blasting Pot Screen (26) when filling Abrasive Blasting Pot (25)

with Abrasive (1) to prevent debris from entering the Abrasive Blasting Pot (25).

Remove Abrasive Blasting Pot Lid (27) before operating the Abrasive Blasting

Pot (25). Install Abrasive Blasting Pot Lid (27) after use to protect the Abrasive

Blasting Pot’s (25) interior.

Remote Control System, Remote Control Switch, Control Line, – Inspect

Remote Control System (22) and Control Line (18) for damage or wear. Repair

or replace damaged or worn components. Ensure Control Line (18) fittings

connected to the Remote Control System (22) are tight and free of leaks. Ensure

Remote Control Switch (16) is functioning properly. Consult Remote Control

Switch Operator's Manual for applicable instructions.

Abrasive Blasting Pot Exhaust Muffler – Inspect Abrasive Blasting Pot

Exhaust Muffler (24) at start and end of daily use. Replace element of Abrasive

Blasting Pot Exhaust Muffler (24) per Operator's Manual instructions.

Lighting System – Ensure the Lighting System (14) is connected to a proper

power supply before use.

DAILY PRE-OPERATION CHECKLIST

Blastmaster®Maxum III Abrasive Metering Valve

OPERATING INSTRUCTIONS

Description

An abrasive metering valve regulates the flow of abrasive from an abrasive blasting pot.

Metering valves create optimum abrasive blasting efficiency by controlling the desired

amount of abrasive entering the air stream. A lean air and abrasive mixture provides faster

cutting, reduced abrasive consumption, increased productivity, and lower clean-up costs.

The Blastmaster®Maxum III Abrasive Metering Valve is an air-actuated, normally-closed

metering valve for use with a pressure-hold remote control system. When the remote

control system is activated, an air signal is sent to the Blastmaster®Maxum III Abrasive

Metering Valve, opening the valve, allowing abrasive to flow from the abrasive blasting

pot. When deactivated, the Blastmaster®Maxum III Abrasive Metering Valve returns to the

closed position, deactivating the flow of abrasive exiting the abrasive blasting pot. Typical

applications include blast rooms, blast yards, bridges, oil refineries, pipelines, shipyards,

and storage tanks. Common abrasives used include aluminum oxide, crushed glass, garnet,

glass bead, mineral abrasives, staurolite, and steel grit/shot.

Operational Requirements

• An abrasive blasting pot with a minimum of 10.5” of clearance from abrasive exit hole to

the ground.

The following may cause safety hazards or reduced performance:

• Improper installation and/or maintenance of components.

• Improper air supply pressure (maximum 150 psi).

Read, understand, and

follow the Original

Equipment Manufacturer

operator’s manuals,

information, training,

instructions, and

warnings, for the proper

and intended use of all

equipment. Failure to

comply with the above

warning could result in

death or serious injury.

W-594

Always depressurize

the entire system,

disconnect all power

sources and lockout/

tagout all components

before any maintenance

or troubleshooting is

attempted. Failure to

comply with the above

warning could cause

electrical shock and

inadvertent activation of

equipment resulting in

death or serious injury.

W-562

Inspect all equipment for

wear or damage before

and after each use.

Failure to use Original

Equipment Manufacturer

repair parts and failure

to immediately replace

worn or damaged

components could void

warranties and cause

malfunctions. Failure to

comply with the above

warning could result in

death or serious injury.

W-505

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