Zero Bnp 6012 User manual

NOTICE TO PURCHASERS AND USERS OF OUR PRODUCTS

AND THIS INFORMATIONAL MATERIAL

Clemco proudly provides products for the abrasive blast industry and

is confident that industry professionals will use their knowledge and

expertise for the safe and efficient use of these products.

The products described in this material and the information relating

to these products are intended for knowledgeable, experienced

users. It is the responsibility of the employer to ensure that proper

training of operators has been performed and a safe work

environment is provided.

No representation is intended or made as to the suitability of the

products described here for any purpose or application, or to the

efficiency, production rate, or useful life of these products. All

estimates regarding production rates or finishes are the responsibility

of the user and must be derived solely from the user’s experience

and expertise, not from information contained in this material.

It is possible that the products described in this material may be

combined with other products by the user for purposes determined

solely by the user. No representations are intended or made as to

the suitability of, engineering balance of, or compliance with

regulations or standard practice of any such combination of products

or components the user may employ.

This equipment is only one component of a cabinet blasting

operation. Other products, such as air compressors, air filters and

receivers, abrasives, equipment for ventilating or dehumidifying, or

other equipment, even if offered by Clemco, may have been

manufactured or supplied by others. The information Clemco

provides is intended to support the products Clemco manufactures.

Users must contact each manufacturer and supplier of products used

in the blast operation for warnings, information, training, and

instruction relating to the proper and safe use of their equipment.

BNP

®

Suction Blast Cabinets

Models 6012 and 7212

O. M. 27723

DATE OF ISSUE: 05/94

REVISION: B, 04/19

One Cable Car Dr.

Washington, MO 63090

Phone (636) 239-4300

Fax (800) 726-7559

Email: [email protected]

www.clemcoindustries.com

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 1

1.0 INTRODUCTION

1.1 Scope of Manual

1.1.1 These instructions cover setup, operation,

maintenance, troubleshooting, optional accessories, and

replacement parts for BNP-6012 and 7212 Suction Blast

Cabinets. The instructions cover the operation of all pull-

thru reclaimers and basic installation of the dust

collector. One of the following supplemental manuals is

provided with the dust collector. Refer to the appropriate

manual for specific installation, operation and

maintenance of the collector.

 CDC-1 Dust Collectors ..... manual stock no. 28225

 RPC-2 Dust Collector ....... manual stock no. 22788

 RPH-2 Dust Collectors ..... manual stock no. 21449

1.1.2 The instructions contain important information

required for safe operation of the cabinet. Before using

this equipment, all personnel associated with the blast

cabinet operation must read this entire manual and all

accessory manuals to become familiar with their

operation, parts, and terminology.

1.2 Safety Alerts

1.2.1 Clemco uses safety alert signal words, based on

ANSI Z535.4-2011, to alert the user of a potentially

hazardous situation that may be encountered while

operating this equipment. ANSI's definitions of the signal

words are as follows:

This is the safety alert symbol. It is

used to alert you to potential physical

injury hazards. Obey all safety

messages that follow this symbol to

avoid possible injury or death.

NOTICE

Notice indicates information that is considered

important, but not hazard-related, if not

avoided, could result in property damage.

CAUTION

Caution indicates a hazardous situation that, if

not avoided, could result in minor or moderate

injury.

WARNING

Warning indicates a hazardous situation that, if

not avoided, could result in death or serious

injury.

DANGER

D anger indicates a hazardous situation that, if

not avoided, will result in death or serious

injury.

1.3 Table of Contents

SUBJECT SECTION LOCATION

INTRODUCTION ........................................................ 1.0

Scope of Manual ......................................................... 1.1

Safety Alerts ................................................................ 1.2

Table of Contents ....................................................... 1.3

General Description .................................................... 1.4

Theory of Operation .................................................... 1.5

Reverse-Pulse Dust Collector Options ....................... 1.6

Nozzle Options ........................................................... 1.7

Reclaimer Options ...................................................... 1.8

Blasting Media ............................................................ 1.9

Compressed-Air Requirements ................................ 1.10

Electrical Requirements ............................................ 1.11

INSTALLATION ......................................................... 2.0

General Installation Notes .......................................... 2.1

Connect Conveying (flex) Hose .................................. 2.2

Connect Compressed-Air Supply Lines ...................... 2.3

Ground the Cabinet and Dust Collector ....................... 2.4

Connect Electrical Service .......................................... 2.5

Connect Media Hose (900 cfm reclaimer only) ........... 2.6

Set Air-Inlet Damper ................................................... 2.7

Final Assembly ............................................................ 2.8

FIELD INSTALLED ACCESSORIES ......................... 3.0

Aluminum Oxide (aggressive media) Kit .................... 3.1

Cabinet Curtains Installation ....................................... 3.2

Manometer .................................................................. 3.3

Armrest ....................................................................... 3.4

Turntable with Workcar and Track .............................. 3.5

Optional Externally Adjustable Vortex Cylinder .......... 3.6

OPERATION ............................................................... 4.0

Media Loading ............................................................ 4.1

Media Unloading ......................................................... 4.2

Loading and Unloading Parts ..................................... 4.3

Blasting Operation ...................................................... 4.4

Blasting Technique ..................................................... 4.5

Stop Blasting ............................................................... 4.6

Shutdown .................................................................... 4.7

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 2

ADJUSTMENTS ......................................................... 5.0

Blasting Pressure (pilot regulator) ............................... 5.1

Air Jet Adjustment ....................................................... 5.2

Media-Air Mixture (media flow) ................................... 5.3

Reclaimer Static Pressure ........................................... 5.4

Optional Externally Adjustable Vortex Cylinder .......... 5.5

Cabinet Air-Inlet Damper ............................................. 5.6

Door Interlocks ............................................................ 5.7

Optional Manometer .................................................... 5.8

PREVENTIVE MAINTENANCE .................................. 6.0

Daily Inspection and Maintenance Before Blasting ........ 6.1

Check media level in reclaimer ................................ 6.1.1

Inspect reclaimer debris screen and door gasket ....... 6.1.2

Drain compressed-air filter ....................................... 6.1.3

Inspect dust container .............................................. 6.1.4

Daily Inspection During Blasting .................................. 6.2

Inspect cabinet for dust leaks ................................... 6.2.1

Check exhaust air for dust ....................................... 6.2.2

Drain pulse reservoir ................................................ 6.2.3

Cartridge pulsing ...................................................... 6.2.4

Weekly Inspection and Maint. Before Blasting ........... 6.3

Inspect view-window cover lens ............................... 6.3.1

Inspect gloves .......................................................... 6.3.2

Inspect BNP® Gun Assembly ................................... 6.3.3

Inspect media hose .................................................. 6.3.4

Weekly Inspection During Blasting ............................. 6.4

Inspect flex hose for leaks ......................................... 6.4.1

Monthly Inspection and Maintenance .......................... 6.5

Reclaimer wear plate and liners ................................ 6.5.1

Dust Collector .............................................................. 6.6

SERVICE MAINTENANCE ......................................... 7.0

Gloves ......................................................................... 7.1

BNP® Gun and Hose Assembly .................................. 7.2

View-Window Cover Lens ........................................... 7.3

View-Window Replacement ........................................ 7.4

Window-Gasket Replacement ..................................... 7 . 5

Window-Frame Removal ............................................. 7.6

Light Assembly ............................................................ 7.7

Replacing Reclaimer Wear Plate ................................ 7.8

Replacing or Installing Rubber Reclaimer Liners ........ 7.9

Removing or Replacing Reclaimer Inlet Baffle .......... 7.10

Reverse-Pulse Dust Collector ................................... 7.11

TROUBLESHOOTING ................................................ 8.0

Poor visibility ............................................................... 8.1

Abnormally high media consumption .......................... 8.2

Reduction in blast cleaning rate .................................. 8.3

Plugged nozzle ............................................................ 8.4

Media bridging ............................................................. 8.5

Media surge ................................................................. 8.6

Blockage in media hose .............................................. 8.7

Poor suction in media hose ......................................... 8.8

Air only (no media from nozzle .................................... 8.9

Blowback through media hose .................................. 8.10

Blasting does not begin when foot pedal is pressed ...... 8.11

Blasting continues after foot pedal is released ......... 8.12

Media buildup in cabinet hopper ............................... 8.13

Static shocks ............................................................. 8.14

Dust leaking from cabinet .......................................... 8.15

Dust leaking from dust collector ................................ 8.16

ACCESSORIES AND REPLACEMENT PARTS ....... 9.0

Optional Accessories .................................................. 9.1

Cabinet Replacement Parts ........................................ 9.2

BNP® Gun and Hose Assembly ................................... 9.3

Filter-Regulator Inlet Piping Assembly ........................ 9.4

View-Window Assembly .............................................. 9.5

LED Light Assembly .................................................... 9.6

Foot-Pedal Assembly .................................................. 9.7

Metering Valve Assembly ............................................. 9.8

Plumbing and Cabinet Controls .................................. 9.9

Flex Hose, Wye Pipe, and Adaptors ......................... 9.10

Replacement Reclaimer Assemblies ........................ 9.11

Reclaimer Replacement Parts ................................... 9.12

Reclaimer Liners ....................................................... 9.13

1.4 General Description

1.4.1 BNP® blast cabinets enclose the blasting

environment to provide efficient blasting while

maintaining a clean surrounding work area. Production

rates are influenced by size of nozzle, compressor

output, working pressure, type and size of media, and

angle and distance of the nozzle from the blast surface.

BNP suction cabinets consist of three major components:

 Cabinet enclosure

 Reclaimer

 Dust collector

1.4.2 Cabinet enclosure: This manual covers two

BNP cabinet sizes.

BNP 6012 Approximate work chamber dimensions:

58" wide x 58.5" deep x 53" high.

BNP 7212 Approximate work chamber dimensions:

69" wide x 70.5" deep x 63" high.

1.4.3 Refer to Figure 1 for arrangement of components

with a CDC-1 Dust Collector. The illustration shows a

freestanding 900 reclaimer. 1200 and 1800 cfm reclaimers

have minor differences. Figure 2 shows the arrangement

with an RPC-2 Reverse-Pulse Dust Collector with dust

drawer. The optional RPH is set up the same way as the

RPC-2, but includes a hopper for additional dust storage

and empties into a drum. The overall height of an RPH-2 is

approximately 10.5 feet and 12 feet when the top access

door is open. To upgrade, an RPC-2 or RPH-2 Dust

Collector may be added at any time.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 3

Figure 1

1.5 Theory of Operation

1.5.1 Once the components are correctly set up and

turned on, the cabinet is then ready for operation by

actuation of the foot pedal. Fully depressing down on the

foot pedal causes air to flow through the blast gun. The

partial vacuum created by air moving through the gun

draws media into the blast-gun mixing chamber. The

media mixes with the air stream and is propelled out the

nozzle. After striking the object being blasted, the blast

media, fines, dust, and byproducts generated by blasting

fall through the grate into the cabinet hoppers. These

particles are then drawn into the reclaimer for

separation. Dust and fines are first separated from

reusable media and pass into the dust collector. Next, the

media is screened for oversize particles and returned to

the reclaimer hopper for reuse. Dust and fines entering

the dust collector are removed from the air stream as

they pass through the filters, discharging clean air.

When the foot pedal is released, blasting stops.

1.6 Reverse-Pulse Dust Collector Options

WARNING

All dust is hazardous to breathe. Emissions can

occur from the dust collection system. Identify

all materials that are to be removed by blasting;

if any toxic materials such as lead dust or dust

from other heavy metals and corrosives, or any

other toxic materials are being removed, use a

HEPA afterfilter to assist in maintaining

inhalation hazards below the permissible

exposure limits (PELs). Prolonged exposure to

any dust can result in serious lung disease and

death. Short-term ingestion of toxic materials

can cause serious respiratory injury or death.

Filtration may not be adequate in reducing all

inhalation hazards. It remains the employer’s or

user’s responsibility to ensure all emissions are

safe to breathe.

Metering Valve

Dust Collector Damper

External Adjustable Vortex

(Optional on system with CDC-1 Dust Collector)

Intake Stack w/Damper Debris Screen

Flex Hose

Reclaimer

Pilot Regulator

(

blast

p

ressure

)

Blow-Off Nozzle

Foot Pedal

Air Filter (Attachment for

com

p

ressed-air su

pp

l

y

)

Pilot-Operated Pressure Regulator

Mounted on back of cabinet

Media Hose

Air Hose

Blow-Off Hose

BNP Blast Gun

CDC-1 Dust Collector

Dust Drum

LED Light Assemblies

On-Off Switches

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 4

1.6.1 CDC-1 Dust Collectors: Shown in Figure 1, the

collector is available for 900 cfm models. The single-filter

cartridge is cleaned by using a manually controlled pulse

of compressed air. Dust collects in a 5-gallon dust drum,

which must be frequently emptied. CDC-1 Dust

Collectors are standard with BNP cabinets with 900 cfm

reclaimers unless an optional RPC-2 or RPH-2 Dust

Collector is ordered at time of purchase. Refer to manual

number 28225.

1.6.2 RPC-2 Dust Collectors: Shown in Figure 2, this

collector is available for 900 cfm models for use with

BNP-6012 and 7212 cabinets. Dual-filter cartridges are

automatically cleaned by a timed, periodic pulse of

compressed air. Dust collects in the drawer, and it must

be frequently emptied. Refer to manual number 22788.

1.6.3 RPH Dust Collector: The RPH-2 (900 cfm and

RPH-3 (1200)cfm) are set up and operates the same as

the RPC-2, as shown in Figure 2, but instead of a dust

drawer the collector sits atop a hopper, which provides

additional dust storage and empties into a 30-gallon

drum. An RPH is standard with 1200 cfm models. Refer to

manual number 21449.

Figure 2

1.6.4 HEPA (high-efficiency particulate air) Filter:

Optional HEPA afterfilters provide additional filtration

and must be used with a reverse-pulse cartridge

collector when removing toxic coatings, heavy metals, or

any other toxic materials. Refer to the applicable dust

collector manual noted in Paragraph 1.1.1 for the HEPA

option.

1.7 Nozzle Options

1.7.1 Unless otherwise specified at the time of

purchase, the cabinet is provided with a No. 5 (5/16"

orifice) ceramic nozzle and No. 5 (5/32" orifice) air jet.

Optional, more durable tungsten carbide and boron

carbide nozzles are available and are shown under BNP

Gun and Feed Assembly in Section 9.3. Use a boron

carbide nozzle when blasting with aggressive media, as

noted in Section 1.9.4.

1.8 Reclaimer Options

1.8.1 A 900 cfm pull-thru reclaimer utilizes a CDC-1

reverse-pulse dust collector or optional RPC-2 or RPH-2

dust collector.

A 1200 cfm reclaimer utilizes a RPH-3 reverse-pulse

dust collector.

Cabinets with 1800 cfm reclaimers and RPH-4 Dust

Collectors are available by special order. Refer to Figure

3 for 1800 cfm applications.

1.8.2 Replaceable rubber reclaimer liners: Rubber

liners prolong service life of the reclaimer and should be

installed when using silicon carbide, aluminum oxide, or

other aggressive media, as noted in Section 1.9.4.

Rubber liners are available for a reclaimer that has a

removable top and designed to accept liners. Rubber

liners are shown on Page 38, Figure 45.

1.8.3 Externally adjustable vortex option: The

vortex fine tunes media separation; refer to Section 5.5

for additional information. The vortex is an option on 900

cfm cabinets with a CDC-1 Dust Collector but is

standard on reclaimers when the cabinet is provided

from the factory with an RPC or RPH Dust Collector.

1.9 Blasting Media

1.9.1 Always use media specifically manufactured for

blasting and those that are compatible with the surface

being blasted. Media produced for other applications

may be inconsistent in size and shape, contain particles

that could jam the media metering valve, or cause

irregular wear. Always obtain the safety data sheet

(SDS) for the blasting media prior to blasting and identify

material being removed by blasting, paying particular

attention to worker health risks and presence of any

hazardous/toxic substances.

Most common reusable media specifically manufactured

for blasting can be used in ZERO cabinets. The listing of

media sizes shown in this section and in Figure 3 are

provided as a guideline only. The guideline is based on

* The vortex is standard when cabinet is provided with

RPC-2 or RPH Dust Collector.

Duct Inlet

RPC-2 Dust Collector

Dust-Collector Damper

*Adjustable

Vortex

Dust Drawer

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 5

standard 5/32" orifice air jet with 5/16" nozzle and average

conditions, with variables such as blast pressure,

media/air mixture, visibility inside the cabinet, humidity,

and reclaimer cleaning rate.

Several variables affecting the reclaimer cleaning rate

include reclaimer size (cfm), contamination of parts

being blasted, media friability, damper setting (static

pressure), and dust-collector filter loading (differential

pressure across the dust filters).

As a rule, larger orifice air jets and nozzles deliver more

media, requiring higher performance from the reclaimer.

When using larger nozzles, the maximum mesh size of

media will be smaller than normally recommended.

Using media finer than those recommended may

decrease visibility and, at some point, carryover to the

dust collector. Media coarser than those recommended

may be too dense for the reclaimer to recover from the

cabinet hopper.

1.9.2 Steel When the recovery hose diameter is

suitably sized (usually reduced one size from standard

as shown in Figure 3) steel may be used with 1200 cfm

and 1800 cfm reclaimers. When using steel media,

conveying hose should have a smooth durable lining,

and rubber curtains should be used to protect the

cabinet walls from peening and rapid wear. Cabinets

configured for steel media use can be ordered from the

factory with appropriately sized conveying hose and

curtains installed. This special requirement must be

specified at the time of purchase. They may also be field

installed at a later date. NOTE: Steel grit or shot is too

heavy to use with cabinets equipped 900 cfm reclaimers.

1.9.3 Sand and slag: Sand should NEVER be used

for abrasive blasting because of the respiratory hazards

associated with media containing free silica. Slags are

not recommended because they rapidly break down

and, making them unsuitable for cabinet applications.

1.9.4 Silicon carbide, aluminum oxide, and garnet:

These are the most aggressive of the commonly used

media. Aggressive media may be used, but the service life

of any components exposed to the media will be reduced.

To avoid unscheduled downtime and maximize cabinet

life, periodically inspect the reclaimer wear plate, blast

hose, and nozzle for wear and replace parts as needed.

When using aggressive media only occasionally, install

an optional aluminum oxide kit, which includes rubber

curtains for the cabinet interior and a boron carbide-lined

nozzle. When using aggressive media on a regular

basis, install the aluminum oxide kit and a fully rubber-

lined reclaimer. Rubber-lined reclaimers are available as

factory-installed items, or field-installed liners can be

installed later if the reclaimer has a removable top and it

is designed to accept liners. Nozzles lined with boron

carbide extend nozzle wear life. Refer to BNP Gun and

Feed Assembly in Section 9.3.

1.9.5 Glass bead: Most beads are treated to ensure

free-flow operation, even in environments of moderately

high humidity. Glass beads subjected to excessive

moisture may be reused only after thoroughly drying and

breaking up of any clumps.

1.9.6 Lightweight and fine-mesh media: When

using lightweight (such as agricultural) media or fine

mesh (180-mesh and finer) media, the reclaimer inlet

baffle may need to be removed to retain media and avoid

carryover. On reclaimer models with bolt-on removable

tops, baffle removal and replacement is easily

accomplished, as explained in Section 7.10. Reclaimers

with welded-on tops require grinding to remove the

baffle, and once it is removed it cannot be replaced.

This guideline to media selection is based on standard 5/16 orifice nozzle (5/32 air jet) and average conditions,

(air pressure, media/air mixture, visibility, contamination of parts being cleaned, humidity, media breakdown,

reclaimer cleaning rate, etc.) As a rule, larger nozzles deliver more media, requiring higher performance from the

reclaimer. Larger nozzles decrease the maximum mesh size of media from those recommended. Media that is finer

than those recommended may decrease visibility, and, at some point, carryover to the dust collector. Media coarser

than those recommended may be too dense to recover from the cabinet hopper.

MEDIA TYPE

RECLAIMER SIZE STEEL GRIT STEEL SHOT PLASTIC GLASS BEAD ALUM. OXIDE

900 cfm with 6 inlet Do not use Do not use N/A See 1.8.7 No. 6 to No. 12 46 to 180-Mesh

1200 cfm with 6 inlet 40 to 120 S230 to S170 Do not use No. 4 to No. 8 16 to 60-Mesh

1200 cfm with 7 inlet Do not use Do not use N/A See 1.8.7 No. 4 to No. 12 46 to 180-Mesh

1800 cfm with 7 inlet 25 to 120 S280 to S70 Do not use No. 4 to No. 8 16 to 60-Mesh

1800 cfm with 8 inlet Do not use Do not use N/A See 1.8.7 No. 4 to No. 12 36 to 180-Mesh

Figure 3

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 6

1.9.7 Plastic media: Plastic and similar lightweight

and/or nonaggressive media are generally not

recommended for suction-style cabinets because the

lower blast velocity of suction blasting combined with the

softer and lighter weight media do not provide the media

impact for productive blasting. Best performance from

plastic media is achieved with pressure blasting,

requiring a pressure vessel with a 60-degree conical

bottom. Refer to Clemco’s Aerolyte® cabinet line.

1.9.8 Bicarbonate of soda: Bicarbonate of soda is not

recommended for use in standard cabinets. Bicarb is a one-

use media, which will quickly saturate the filter cartridge(s).

Best performance from bicarb media is achieved with

pressure blasting, requiring a pressure vessel. Refer to

Clemco’s Aerolyte cabinet line for cabinets that are

specifically designed for use with bicarbonate of soda.

1.10 Compressed-Air Requirements

1.10.1 The size of the compressor required to operate

the cabinet depends on the size of the air jet and

blasting pressure. Unless otherwise specified, cabinets

are supplied with a No. 5 (5/32" orifice) jet. Refer to the

table in Figure 4 to determine air consumption. Consult

with a compressor supplier for suggested compressor

size based on the air consumption. NOTE: A separate

air line is required for the reverse-pulse dust collector.

If preferred, remove the plug from the auxiliary air port

(shown in Figure 6) and connect a 1/4″ ID or larger

air line to the dust collector pulse

reservoir/manifold.

Compressed-Air Consumption in CFM

BNP Gun

Jet

Orifice

Nozzle

Orifice

CFM

PSI

No. 4 1/8" 5/16" 21 80

No. 5 5/32" 5/16" 32 80

No. 6 3/16" 3/8" 47 80

*No. 7 7/32" 7/16" 62 80

*No. 8 1/4" 1/2" 86 80

* Using this combination could affect usable media

size; refer to Section 1.9.

Figure 4

1.10.2 The air filter at the air-inlet connection reduces

condensed water from the compressed air. Its use is

especially important in areas of high humidity or when

using fine-mesh media. Moisture causes media to clump

and inhibits free flow through the feed assembly. If the

filter does not remove enough moisture to keep media

dry and flowing, it may be necessary to install an air

dryer or aftercooler in the air-supply line.

1.11 Electrical Requirements

All wiring external of the cabinet is provided by the user

to comply with local electrical codes.

1.11.1 Electrical requirements depend on the size and

phase of the dust-collector exhauster motor. NOTE: Full

load amps (FLA) shown below are for the motor only;

the lights draw less than one amp. Standard cabinets

are supplied as follows:

900 cfm: 2 HP, 208/230/460V, 3-PH, 60 HZ

Supplied with 230-volt control panel unless 460-volt is

specified at the time the order is placed.

FLA 208/5.5, 230/5.6, 460/2.8.

1200 cfm: 5 HP, 208/230/460V, 3-PH, 60 HZ

Supplied with 230-volt control panel unless 460-volt is

specified at the time the order is placed.

FLA 208/12 to 13, 230/12 to 13, 460/6.

1800 cfm: 7.5 HP, 208/230/460V, 3-PH, 60 HZ

Supplied with 230-volt control panel unless 460-volt is

specified at the time the order is placed.

FLA 208/17.8 to 19.6, 230/17.8 to 19.6, 460/8.9.

Refer to Section 2.5 to connect electrical service.

2.0 INSTALLATION

Unless noted otherwise, the sequence of assembly in

Sections 2.2 through 2.8 may be done in any order that

is convenient for the installer.

2.1 General Installation Notes

2.1.1 Refer to Figures 1 (and Figure 2 for optional

RPC-2 Dust Collector) for the general arrangement.

Place all components in a convenient location where

compressed air and electrical service are available. The

cabinet location must comply with OSHA and local safety

codes. Allow for full access to all doors and service

areas, and for efficient handling of large parts. Provide

enough clearance at the dust collector for maintenance

and to remove the dust container. Place freestanding

reclaimers directly behind the cabinet with flex hose

connections and metering valve facing toward the

cabinet to allow for as few bends as possible to prevent

wear. Determine the best location for all components and

position them before making compressed-air connections,

electrical connections, and attaching flex hose.

2.1.2 The cabinet must be placed on a flat level

surface. If the surface is not flat, the cabinet could flex,

causing the door alignment to shift. If the floor is not

level, shim the leg(s) as required to align the door.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 7

2.1.3 Use the eyebolts on the four top corners to lift

and maneuver the cabinet. Do not lift the cabinet from

the hopper or lower frame.

NOTICE

Do not use a forklift to lift the cabinet from the

hoppers or lower frame. The cabinet hopper is

not designed to support the weight of the

cabinet. The lower frame is designed to support

distributed weight. Using a forklift on the

hoppers or frame may cause damage.

2.1.4 Refer to the dust-collector owner’s manual to set

up the dust collector and prepare it for operation.

2.2 Connect Conveying (flex) Hoses – Figure 5

Refer to Page 36, Figure 43 for hose sizes

2.2.1 Connect the two smallest diameter flexible

conveying hoses between the cabinet hopper transition

tubes and wye pipe adaptor. It is easier to slip the hose

over the adaptor and to create a tighter seal if the first

two or three inches of wire are removed from the inside

of the hose. Use care not to damage the hose. NOTE:

The hose wire helps dissipate static electricity in

the conveying hose, and helps ground each

segment. For the hose wire to dissipate static

electricity, the wire must touch the metal of each

segment. Clamp the flex hose securely with worm

clamps provided.

2.2.2 Connect the intermediate diameter flex hose

between the wye pipe and reclaimer inlet

adaptor. Clamp the flex hose securely with worm

clamps provided.

Figure 5

2.2.3 The largest diameter hose attaches between the

reclaimer outlet and dust collector inlet.

2.3 Connect Compressed-Air-Supply Lines

A separate air line is required for the dust collector

pulse. Refer to the dust collector owner’s manual. The

line may be connected to the auxiliary-air port on the

cabinet plumbing, as shown in Figure 6.

Figure 6

Some items removed for clarity.

1/2" NPT Air Filter

Use safety lock pins to secure twist-on couplings.

Air-Supply Hose

Air Fitting

Use safety cable to prevent separated hose from whipping.

Once installed, all slack must be removed from the cable.

Plugged Auxiliary-Air Port

A

pp

l

y

thread sealant to male threads.

To Blow-off Nozzle

Smallest Diameter Hose

Wye Pipe Adaptor

Intermediate Diameter Hose

Largest Diameter Hose

Clamps

Hopper Transition Tubes

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 8

WARNING

Failure to observe the following before

connecting the equipment to the compressed-

air source can cause serious injury from the

sudden release of trapped compressed air:

 Lockout and tagout the compressed-air

supply.

 Bleed the compressed-air supply line.

2.3.1 Refer to Paragraph 2.3.2 to determine the

recommended air-supply hose size, then refer to Figure

6 and apply thread sealant to the male threads of an

air

fitting that is compatible with the air-supply hose

fitting, and install it onto the 1/2-NPT air filter located

under the cabinet hopper. The style of connection shown

in Figure 6 is for reference only.

2.3.2 Install an isolation valve at the air source to

enable depressurization for service, and refer to the

table in Figure 7 to determine the minimum ID air-supply

line to the cabinet air inlet. A smaller diameter hose may

reduce blasting efficiency.

WARNING

To avoid the risk of injury from compressed air,

install an isolation valve and bleed-off valve

where the air supply is tapped into the

compressed-air system. This enables a lockout

and tagout procedure and depressurization of

the compressed-air line before performing

maintenance.

MINIMUM COMPRESSED-AIR LINE ID

Jet Size

Air Line Length

1/8"

No. 4

5/32"

No. 5

3/16"

No. 6

25 feet 3/4" 3/4" 1"

50 feet 3/4" 3/4" 1"

75 feet 3/4" 1" 1"

100 feet 3/4" 1" 1"

Figure 7

2.3.3 Connect the air line from the air source to the

air-filter inlet.

WARNING

Hose disconnection while under pressure can

cause serious injury or death. Use safety lock

pins or safety wire to lock twist-on couplings

together and prevent accidental separation, and

also use safety cables to prevent hose from

whipping should separation occur. Safety lock

pins and safety cables are listed in Section 9.1:

Optional Accessories.

2.3.4 Refer to the dust collector owner’s manual and

connect a compressed-air line to the pulse manifold.

2.4 Ground the Cabinet and Dust Collector

2.4.1 To prevent static electricity buildup, attach an

external grounded wire from an earth ground to the

grounding lug on the left rear of the cabinet. Refer to the

dust collector owner’s manual and connect a ground

wire to the dust collector.

2.5 Connect Electrical Service

WARNING

Shorting electrical components can result in

serious injury or death from electrical shock

and can cause equipment damage. Electrical

power must be locked out and tagged out

before performing any electrical work. All

electrical work or any work done inside a

control panel or junction box must be

performed by a qualified electrician and comply

with applicable codes.

All wiring external of the cabinet is provided by the user

to comply with local electrical codes.

2.5.1 Three-phase wiring

A wiring schematic is stowed inside the control panel

mounted on the back of the cabinet. After wiring is

completed, keep a copy of the schematic with the

manual for future reference and for electrical

replacement parts.

2.5.1.1 Refer to the wiring schematic and wire from the

users disconnect to the panel and from the panel to the

dust-collector motor, per instruction on the motor data

plate.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 9

2.5.1.2 Check the dust-collector motor amperage on

initial startup; if the motor draws excessive amperage,

gradually close the dust-collector damper, located on the

inlet on CDC Dust Collectors and on the exhauster outlet

on RPC-2 and RPH-2 Dust Collectors, until the

amperage is within the specifications shown on the

motor plate.

2.5.2 Check Motor Rotation

2.5.2.1 After wiring is completed, observe the warning

that follows and check the motor rotation. To check

rotation, turn the On-Off switch ON and quickly turn it

OFF, causing the motor to rotate slowly. Look through the

slots in the motor fan housing where rotation of the fan

can easily be observed. Proper rotation is indicated by the

arrow on the exhauster housing; the fan should rotate

toward the exhauster outlet. If it rotates in reverse, change

the wires as noted on the motor plate to reverse rotation.

WARNING

Do not look into the exhauster outlet while the

paddle wheel is turning. Injury to the eye or face

can occur from objects being ejected from the

exhauster.

2.6 Connect Media Hose to Metering Valve

Figure 8

2.6.1 Refer to Figure 8 and attach the clear media

hose from under the cabinet hopper to the metering

valve at the bottom of the reclaimer hopper by sliding the

hose onto the barded fitting on the metering valve.

2.7 Set Air-Inlet Damper ‒ Figure 9

2.7.1 The air-inlet damper is located on the top of the

cabinet and must be set to match the cabinet

dimensions and reclaimer size. The air damper was

preset prior to shipment; confirm the initial setting as

noted in Paragraph 2.7.2.

Figure 9

2.7.2 The label on the damper shows the settings in

degrees. The initial setting should align the handle as

follows:

900 reclaimer .................. align handles to 30 degrees

1200 reclaimer ..... align handles to 0 degree (full open)

1800 reclaimer ..... align handles to 0 degree (full open)

2.7.3 Loosen the lock nuts and align the damper

handle as noted. When correctly positioned, tighten the

lock nuts to maintain the setting. Refer to Section 5.6 for

adjustment procedure.

2.8 Final Assembly

2.8.1 Position the foot pedal on the floor at the front of

the cabinet.

2.8.2 A package of five view-window cover lenses is

supplied with the cabinet. To install a cover lens, remove

the adhesive backing and apply the lens to the clean,

dry, inner surface of the view window. Refer to Section

7.3. When the cover lens becomes pitted or frosted,

replace it.

3.0 FIELD INSTALLED ACCESSORIES

Optional accessories are shown in Section 9.1

3.1 Aluminum Oxide (aggressive media) Kit

3.1.1 An optional aluminum oxide kit is available

factory installed or may be field installed later.

Factory-installed kits consist of black rubber cabinet

curtains with grommets, curtain hardware, and a boron

carbide nozzle.

Barbed Hose Fitting

Clear Media Hose

Metering Valve

Degrees Label

Air-Inlet Damper

Damper Handle

Align handle to degrees as

noted in Paragraph 2.7.2.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 10

Field-installed (or replacement factory-installed) kits

consist of black rubber cabinet curtains (refer to Section

3.2 for curtain installation), a boron carbide nozzle, and

light-lined flex hose. If the existing flex hose is in good

condition, reserve the new hose for future replacement.

3.2 Cabinet Curtain Installation – Figure 10

3.2.1

Match the curtains to the corresponding wall and

door as shown in Figure 10. Hook the curtains to the J-

Hooks welded along the top of the front, back, and side

walls. Cut openings for the hoses on the lower left rear wall.

Figure 10

3.2.2 Using protectors against the curtains and outer

door, clamp the door curtains in place. The upper edges

of the door curtains should be even with the outer edges

of the soundproofing panel. Insert a #10 self-drilling

screw with an 11/16 OD flat washer through the

grommet holes. Use a screw gun with a 5/16" socket to

attach the door curtains.

3.2.3 For front walls, place the batten strip over the

curtain, and clamp it in position on the front slope above

the break as shown in Figure 10. Match drill .187"

(3/16") diameter holes through the rubber and cabinet

front at each batten hole. To install the batten insert #10-

24 x 1 round head machine screws through the cabinet

front, curtain and batten. Install lock washers and nuts

from inside the cabinet and tighten securely.

3.3 Manometer

The optional manometer kit is listed in Section 9.1.

3.3.1 Consistent static pressure is necessary for

precise media separation, as the reclaimer's efficiency is

achieved by a centrifugal balance of air flow, particle

weight, and size. The manometer measures static

pressure. Reclaimer static pressure is set by adjusting

the dust collector-damper. Refer to Section 5.4 to adjust

static pressure. Refer to Section 5.8 for instructions on

using the manometer.

3.4 Armrest

3.4.1 Assemble the armrest and mounting brackets,

as shown in Figure 11.

3.4.2 Position the assembly so the armrest is about

even with the bottom of the arm port opening. Mark one

hole location on the front of the cabinet at each

mounting bracket.

Figure 11

3.4.3 Drill a 3/8" hole at both locations and mount the

armrest using 5/16 cap screw, washers, and nuts. Install

the bolts from inside the cabinet to protect the threads

from abrasion, should the armrest need to be removed

at a later date.

3.4.4 Match drill the remaining four bracket holes and

install the remaining fasteners.

3.4.5 Loosen the fasteners on the slotted bracket and

raise or lower the armrest to a comfortable position.

3.5 Turntable with Workcar and Track

3.5.1 These instructions cover field installation of the

2000 lb. capacity track and work cart with turntable. If

the track was ordered with the cabinet, it is partially

assembled at the factory. Disregard the instructions that

do not apply. Refer to Figure 12 for arrangement of the

major components.

5/16 x 1" Cap Screw,

Flat Washer, Lock

Washer, and Nut

3/8 x 1" Cap Screw

and Lock Washer

Armrest

J-Hook

No. 10 Self- drill Screw Washer

Nut

Lock Washer

Batten Strip

Machine Screw

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 11

Figure 12

3.5.2 Install inside track – Figure 13

3.5.2.1 Lay the inside track on the cabinet hoppers and

above the grate as shown in Figure 13.

Figure 13

3.5.2.2 Push the end support bar against the inside

cabinet wall, opposite the door, and insert the angled

tabs on the door end of the track into the two sleeves on

the hopper as shown.

3.5.2.3 Make sure the weight of the track is evenly

distributed over the hoppers and match drill through the

cabinet wall, at the four hole locations in the end support

bar for 3/8 fasteners. If necessary, mark the hole

locations and remove the track for drilling.

3.5.2.4 Secure the inside track to the cabinet with four

3/8-NC cap screw, flat washers, lock washers, and nuts

provided.

3.5.3 Position outside track – Figure 14

3.5.3.1 Place the outside track so it is in-line with the

inside track. Space the track so the top rails (not the

smaller support angles) on the hinged end are

approximately 42-inches from the top rails on the inside

track.

42-Inches

Figure 14

3.5.4 Attach hinged track – Figure 15

3.5.4.1 With the door open, place the hinged track on

the inside and outside track supports, as shown in

Figure 15. Maneuver the outside track as needed to

align the hinge track bolt holes with the outside track bolt

holes, while making sure hinge track is fully resting (with

no gaps) on the track supports.

3.5.4.2 Install 1/2" shoulder screws through both hinged

track pivot-bars and into the holes in the outside track.

Secure with 3/8 lock nuts.

3.5.4.3 Raise or lower the four adjustable foot pads on

the outside track as needed to level it to the hinged track

and inside track.

3.5.4.4 The quick-release pin holds the hinge track

when in the raised position, as shown in Figure 16.

Figure 15

Release Pin (3)

Inside Track

Outside Track

Release Pin (3)

Workcar

Turntable

Angled

Mounting Tabs

Match drill 4

bolt holes.

Hinged Track

Door and grates removed for clarity.

Outside Track

End Support

Bar

Hinged Track

Lay hinged track on inside

and outside track supports

1/2 x 1/2

Shoulder Screw

Stock No. 03491

Quick-Release Pin

Stock No. 25540

3/8 Lock Nut

Stock No. 03312

Track Supports

Insert angled

tabs into hopper

sleeves.

Leveling Foot Pads

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 12

3.5.5 Turntable work cart and hinge track

operations – Figure 16

3.5.5.1 Set the workcar on the outside track; the

grooves in the wheels are designed to ride on the top of

the track rails.

3.5.5.2 For shipping purposes, some field installed or

replacement turntables may not be installed in the

workcar. If shipped separately, slide the turntable shaft

through the rubber bearing-protector, bearing collar and

bearing. When the turntable shaft is fully seated in the

bearing, use a hex key to tighten the collar on the shaft.

Figure 16

3.5.5.3 Move the workcar toward the track stops until the

hole in the pin bracket is aligned with the hole in the outside

track cross brace. Insert the release pin through both holes

to prevent the workcar from moving. Note: A similar hole

is in one of the inside track cross braces. Inserting the pin

through the workcar and inside track hole prevents the

workcar from moving when inside the cabinet.

3.5.5.4 When certain the tracks are aligned, level, and

that the workcar moves smoothly on all tracks, anchor the

outside track to the floor through the holes in the foot pads.

3.5.5.5 Raise the hinged track until the locking hole in

the pivot-bars is aligned with the hole in the bracket on

the bottom side of the outside hinge. Install a quick-

release pin on both sides of the track to hold it vertical.

WARNING

Always insert pins in both sides of the hinged

track to lock it upright, when it is lifted vertical.

The track could fall if left unlocked and cause

severe injury.

4.0 OPERATION

NOTICE

Do not pulse new dust collectors or

replacement cartridges until the cartridges are

properly seasoned, as instructed in the dust-

collector owner’s manual. Pulsing unseasoned

cartridges can decrease the efficiency of dust

collector and cause premature cartridge failure.

4.1 Media Loading

4.1.1 Media capacity: The approximate capacity and

minimum media amount is shown in the table below.

Reclaimer

Size

Cubic

Feet

Glass

Bead

Aluminum

Oxide

Minimum

Charge

900 cfm 1.1 100 lbs. 130 lbs. 40 lbs.

1200 cfm 1.5 135 lbs. 180 lbs. 75 lbs.

1800 cfm 2.4 215 lbs. 285 lbs. 100 lbs.

4.1.2 Media loading: With the exhauster OFF, add

clean, dry media by pouring it through the reclaimer

door. Do not fill above the hopper on the reclaimer. Do

not pour media directly into the cabinet hopper, as

overfilling may occur. Overfilling will result in media

carryover to the dust collector and possible blockage in

the conveying hose. Refill only after all media has been

recovered from the cabinet.

4.2 Media Unloading ‒ Figure 17

4.2.1 To empty the cabinet of media, turn ON the

exhauster and blow off the cabinet interior until all media

is recovered from the cabinet. Turn OFF the exhauster

and place an empty bucket or other suitable container

under the metering valve. Unscrew the plastic drain plug

from the metering valve, permitting media to flow into the

bucket.

Figure 17

Quick-Release Pin

Pin Bracket

Anchor Holes (4 Places)

Quick-Release Pin

Track Stops

Reclaimer Hopper

Metering Valve

Plastic Drain Plug

Unscrew plug to empty

media from reclaimer.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 13

4.2.2 If media doesn't flow, it has caked; open the fill

door and stir media until it starts to flow. Before the

container becomes too heavy to easily manage, replace

the plug and empty the container. Replace the plug

when the reclaimer is empty or, if changing media type,

purge the media hose, as noted below.

4.2.3 To purge the media hose, before replacing the

plug turn ON the exhauster, grasp the gun, and press

the foot pedal using the gun to blow off the cabinet

interior until the air from the gun and the cabinet are

clear. Turn OFF the exhauster and replace the plug.

4.3 Loading and Unloading Parts

WARNING

Use solid fixturing to hold heavy parts in place.

Do not remove lift equipment until the part is

adequately supported to prevent movement.

Moving heavy, unsupported parts may cause

them to shift or topple and cause severe injury.

This is especially important with the use of

turntables.

4.3.1 Load and unload parts through the door.

4.3.2 Parts must be free of oil, water, grease, or other

contaminants that will clump media or clog filters. If parts

are oily or greasy, degrease and dry them prior to

blasting.

4.3.3 When blasting small parts or objects having

small pieces that could become dislodged and fall off,

place an appropriately sized screen over the grate (or

under the grate when frequently blasting small parts) to

prevent parts from falling into the hopper. If an object

should fall through the grate, stop blasting immediately

and retrieve it.

4.3.4 Close door; the door interlock system will

prevent blasting if the door is open.

4.4 Blasting Operation

4.4.1 Slowly open the air supply to the cabinet. Check

for air leaks on the initial startup and periodically

thereafter.

4.4.2 Turn ON the lights and exhauster. The push-

button switches, located on the cabinet front, performs

both functions.

4.4.3 Load parts.

W

ARNING

To avoid the inhalation of dust, which can

cause respiratory illness from short-term

ingestion or death from long-term ingestion;

 Use the blow-off nozzle to blow media off

parts before opening the door.

 After blasting, keep door closed and

exhauster running until the cabinet is clear

of all airborne dust.

 Always close cabinet, reclaimer, and dust-

collector doors before blasting. Keep all

doors closed during blasting.

 Always wear blast gloves.

 Stop blasting immediately if dust leaks are

detected.

4.4.4 Close door; the door interlock system will

prevent blasting if the door is open.

4.4.5 Adjust the pilot-pressure regulator to the

required blast pressure, per Section 5.1. The regulator is

located on the top-left side of the cabinet.

4.4.6 Insert hands into blast gloves.

4.4.7 To blast, hold the gun firmly, point the gun

toward the object to be blasted, and apply foot pressure

to the top of the foot pedal; blasting will begin

immediately.

WARNING

Shut down the cabinet immediately if dust leaks

are detected from the dust collector or cabinet.

Make sure the dust-collector filter(s) are

correctly seated and not worn or damaged.

Prolonged breathing of any dust can result in

serious lung disease or death. Short-term

ingestion of toxic dust, such as lead, poses an

immediate danger to health. Toxicity and health

risk vary with type of media and dust generated

by blasting. Identify all material being removed

by blasting and obtain a safety data sheet (SDS)

for the blast media.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 14

NOTICE

To prevent rapid frosting of the view window,

avoid pointing the blast nozzle toward the

window and install a view-window cover lens,

per Section 7.3.

4.4.8 When holding parts off the grate, use a solid

conductive backrest to support the part. Without this

assist, especially with longer blasting operations, the

operator will tire easily from resisting blast pressure, and

static electricity could build up in the ungrounded part

and cause static shocks. Whenever possible avoid

holding small parts that require blasting into the glove.

4.4.9 If an object should fall through the grate, stop

blasting immediately and retrieve it.

4.5 Blasting Technique

4.5.1 Blasting technique is similar to spray painting

technique. Smooth continuous strokes are most

effective. The distance from the part affects size of blast

pattern. Under normal conditions, hold the nozzle

approximately 3" to 6" from the surface of the part.

4.6 Stop Blasting

4.6.1 To stop blasting, remove foot pressure from the

top of the foot pedal.

4.6.2 Use the blow-off nozzle to blow media off

cleaned parts.

4.6.3 Keep door closed and exhauster running until

the cabinet is clear of all airborne dust.

4.6.4 Unload parts.

4.7 Shutdown

4.7.1 Shut off the air-supply valve, bleed the air-

supply line, and drain the compressed-air filter and dust-

collector pulse reservoir.

4.7.2 Switch OFF the lights and exhauster.

5.0 ADJUSTMENTS

5.1 Blasting Pressure (pilot regulator) ‒ Figure 18

5.1.1 The pilot regulator, located on the top-left side of

the cabinet, enables the user to adjust blasting pressure

while blasting to suit the application. The suitable

pressure for most purposes is about 80 psi. Lower

pressures may be required on delicate substrates and

will reduce media breakdown. Higher pressure may be

required for difficult blasting jobs on durable substrates,

but will increase media breakdown. If pressure is too

high, suction in media hose will decrease, and if high

enough, cause blowback in the hose. Optimal production

can only be achieved when pressure is carefully

monitored.

Figure 18

5.1.2 To adjust pressure, unlock the knob by pulling it

out, as shown in Figure 18, and turn it clockwise to

increase pressure or counterclockwise to decrease

pressure. Pressure may drop slightly from closed-line

pressure when blasting starts. Once operating pressure

is set, push the knob in to lock it to maintain the setting.

5.2 Air Jet Adjustment ‒ Figure 19

5.2.1 Thread the air jet 4-1/2 to 5 full turns into the

gun body. Doing so will leave 3-1/2 to 4 threads exposed

past the lock nut. Tighten the lock nut to maintain the

setting. Refer to Section 9.3 for optional adjusting tool,

which correctly positions the jet. Instructions are

provided with the tool.

Pressure regulator is located

on left side of view window.

Increase pressure

When viewed from the knob end,

turn clockwise to increase pressure

turn counterclockwise to decrease pressure.

Decrease

p

ressure

Pull knob out to

unlock and adjust

pressure.

Push knob in to lock.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 15

Figure 19

5.3 Media/Air Mixture (media flow) ‒ Figure 20

5.3.1 Check the media stream for correct media/air

mixture; media flow should be smooth and appear as a

light mist coming from the nozzle.

5.3.2 If media does not flow smoothly, loosen the

locking nut and adjust the metering screw until the upper

holes in the metering stem are closed off and the lower

holes are fully open, as shown in Figure 20. This

adjustment is a starting point.

Figure 20

5.3.3 If pulsation occurs in the media hose, either

media is damp and caked, or not enough air is entering

the media stream. While blasting, loosen the locking nut

and slowly turn the adjusting screw out

(counterclockwise when viewed from the top) until media

flows smoothly. Tighten the locking nut finger-tight to

maintain the setting.

5.3.4 If media flow is too light, decrease air in the

mixture by turning the metering screw in (clockwise

when viewed from the top), covering more of the holes

so less air enters the media hose. Tighten the locking

nut finger-tight to maintain the setting.

5.4 Reclaimer Static Pressure (dust-collector

outlet damper)

5.4.1 Correct static pressure varies with size of

reclaimer, and the size, weight, and type of media.

5.4.2 Adjust static pressure by opening (handle inline

with air flow) or closing (handle perpendicular to air flow)

the dust-collector damper. Refer to the dust collector

owner’s manual; the damper is located on the inlet on

CDC-1 Dust Collectors and on the exhauster outlet on

RPC-2 and RPH Dust Collectors. If the damper is not

opened far enough, the reclaimer will not remove fines,

resulting in dusty media and poor visibility, and possible

media blockage in the conveying hose. If the damper is

opened too far, it may cause carryover (usable media

carried into the dust collector) and result in excessive

media consumption. Open only as far as necessary to

obtain a balance of dust removal without media

carryover.

5.4.3 A manometer is useful when adjusting or

monitoring static pressure. The manometer kit is listed in

Section 9.1: Optional Accessories. Refer to Section 5.8

for manometer operation. The following are static

pressure starting points for given media. Static pressure

may need to be lower with finer media, higher with

coarser media. Run the media through several blast

cycles, allowing the reclaimer to function with these

settings. Inspect the media in the reclaimer and fines in

the dust collector, as noted in Paragraph 5.4.2. Continue

adjusting static pressure until optimum media cleaning

without carryover is attained.

Glass Bead No. 4 to 7 ................................... 3" – 3-1/2"

Glass Bead No. 8 to 13 .................................. 2-1/2" – 3"

Aluminum Oxide, 60-mesh & coarser .................... 4" – 5"

Aluminum Oxide, 80-mesh & finer .................. 2-1/2" – 3"

*Steel Grit, 50-mesh to 120-mesh ......................... 6" – 7"

*Steel Shot S-170 to S-70 .................................... 6" – 7"

*Refer to Section 1.9 for media limitations.

5.4.4 If the damper has been adjusted and carryover

or excessive dust in the media continues, the optional

externally adjustable vortex cylinder may help by fine

tuning media separation. The vortex cylinder is usually

required only when using 180-mesh and finer media or

lightweight media. Refer to Section 5.5.

5.5 Optional, Externally Adjustable Vortex

Cylinder – Figure 21

The externally adjustable vortex is an option when the

cabinet is provided with a CDC-1 Dust Collector. The

vortex is standard on reclaimers when the cabinet is

provided from the factory with an RPC-2 or RPH Dust

Collector.

Adjusting Screw

Lower holes fully open.

Locking Nut

Upper holes

fully closed.

Lock Nut

Air Jet

3-1/2 to 4 threads between

lock nut and air jet hex.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 16

The vortex cylinder fine tunes media separation. Before

adjusting the cylinder, adjust the damper on the dust

collector to increase or decrease static pressure, per

Section 5.4. Once the damper is adjusted, adjust the

cylinder.

5.5.1 The vortex cylinder is located atop the reclaimer

where the flex hose connects. Adjustments are made by

loosening the handle's tensioning knob and moving the

handle to achieve the correct setting. When the correct

setting is established, tighten the locking knob to prevent

movement. Start with the lever slightly to the right (about

1 o’clock, as shown in Figure 21) of the vertical position.

5.5.2 To remove more fines: (Too much dust in

media. Raise the cylinder by moving the lever left toward

COARSE in 1/4" increments at the indicator plate. Allow

the media to go through several blast cycles before

determining if further adjustment is needed.

5.5.3 To remove fewer fines: (Excessive usable

media is carried to the dust collector). Lower the cylinder

by moving the lever right toward FINE in 1/4" increments

at the indicator plate. NOTE: If the cylinder is lowered

too far, the reclaimer will again begin to allow usable

media to be carried over, which this causes abnormally

high static pressure.

Figure 21

5.5.4 When using media finer than 180-mesh, the inlet

baffle in the reclaimer may need to be removed. Refer to

Section 1.9.6.

5.6 Cabinet Air-Inlet Damper

5.6.1 Once the inlet damper is initially set, per Section

2.7, it seldom requires readjustment. The initial setting

produces approximately .5 to .75 of static pressure in

the cabinet enclosure. Do not confuse cabinet static

pressure with reclaimer static pressure, which is

controlled by the dust-collector damper, as noted in

Section 5.4. Reclaimer pressure must be set before

cabinet pressure.

5.6.2 Using a manometer (as noted in Section 5.8 and

listed in Section 9.1) is the most accurate method of

monitoring and adjusting cabinet pressure. Following the

instructions packed with the manometer, start the

exhauster, insert the needle into a glove, and adjust

pressure using the cabinet’s air-inlet damper. Open the

damper farther to decrease static pressure or close it

farther to increase pressure.

5.6.3 If a manometer is not available, use the gloves

as an indicator. With the exhauster ON, the gloves

should be inflated but not elevated off the grate.

5.7 Door Interlocks ‒ Figure 22

WARNING

Never bypass the door interlock system. Doing

so can result in serious injury from unexpected

blasting.

5.7.1 The door interlocks disable the blasting control

circuit when door are open. To enable blasting, the door-

interlock switch must be engaged when door is closed.

The interlocks are set at the factory and do not normally

require field adjustment unless parts are replaced. When

adjustment is required, proceed as follows.

5.7.2 Close cabinet door.

5.7.3 Loosen the actuator bracket screws and

adjusting screw nut. Move the actuator bracket up or

down, and the adjusting screw sideways, as needed to

center the adjusting screw on the over-travel stop (in

center of detent sleeve). Tighten the bracket screws.

5.7.4 Turn the adjusting screw in or out as required to

engage the switch without applying excessive pressure

on it. Tighten the adjusting screw nuts.

Remove more fines

from media by

moving the handle

farther to the left.

Remove fewer

fines by moving

the handle farther

to the right.

Tensioning Knob

Begin with handle at the 1 o’clock position, as shown.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 17

Figure 22

5.7.5 Test the operation with the door open and then

closed. Negative pressure inside the cabinet may cause

the door to flex inward. Tests should be performed with

the exhauster running. Point the nozzle away from the

door during the tests and open the door only enough to

disengage the interlock switch. The interlocks should

stop the blasting when the door is open and permit

blasting when the door is closed.

5.8 Optional Manometer

These instructions show several methods of taking static

pressure readings (negative pressure) on reclaimers by

using a flexible-tube manometer. Use the method best

suited for the application. The instructions explain the

processes for taking periodic readings and show how to

permanently install the manometer for taking frequent

readings. A fitting should be installed when the

manometer installation is permanent, per Paragraph

5.8.6.3. Use silicone or other sealant around the fitting to

prevent leaks. The fitting should be capable of being

capped when the manometer tube is removed. A cap will

prevent leaks that alter the reclaimer’s separation

efficiency. Taking readings at different locations could

produce different readings. Static pressure readings at the

door are generally 0.5" to 1" lower than those taken above

the reclaimer. The readings are reference points, so

readings should be taken using the same method each

time a reading is taken.

5.8.1 Refer to instructions packed with the manometer

for preparing and operating the manometer.

5.8.2 Connect one end of the 3/16" ID tubing to one of

the tubing connectors (elbows) at the top of the

manometer by pushing it over the barbed adaptor.

5.8.3 Leave the needle protector on the needle and

insert the needle into the other end of the tubing. The

ends of the tubing must fit tight on the manometer and

needle; leaks will cause inaccurate readings.

5.8.4 Open both manometer valves (elbows), per

manometer instructions.

5.8.5 Magnets on the manometer hold it in position on

the reclaimer or dust-collector body. The manometer

must be vertical so the fluid is level on both sides.

5.8.6 Needle placement: Figure 23 shows the

manometer setup for taking both periodic and frequent

static pressure readings.

5.8.6.1 Taking readings in the flex hose: Remove the

needle protector and insert the needle into the flex hose

approximately 8" above the top of the reclaimer.

5

8

7

6

4

3

2

1

4

3

2

1

0

8

7

6

5

8

7

6

4

3

2

1

4

3

2

1

0

8

7

6

5

8

7

6

4

3

2

1

4

3

2

1

0

8

7

6

5

Figure 23

8"

Some items removed or rotated for clarity.

Reclaimers are for reference and

may differ from those shown.

Refer to Paragraph 5. 8.6.1

Insert the needle into flex hose

8" above the top of the

reclaimer.

Refer to Paragraph 5.8.6.2

Place the needle so the tip is

inside the door opening.

Carefully close the door on

the needle.

Refer to Paragraph 5.8.6.3

When taking frequent

readings, install a

permanent fitting in the

reclaimer wall just below the

inner cone, as shown.

Cabinet Doo

r

Detent Sleeve

Over-Travel Stop

Bracket Screws

A

djust the screw to push the

valve stem (over-travel stop)

in when door is closed.

Adjusting Screw

Loosen nut and move adjusting

screw sideways to center the

screw on the over-travel stop.

Adjusting Screw Nut

Loosen the bracket screws and

move the bracket up or down to

center the adjusting screw on the

over-travel stop.

Actuator Adjusting Bracket

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 18

5.8.6.2 Taking readings at the reclaimer door: Open

the reclaimer fill door, remove the needle protector, and

place the needle so the tip is inside the door opening.

Carefully close the door on the needle. The side of the

needle will embed into the rubber, creating an airtight

seal.

Figure 24

5.8.6.3 Taking frequent readings using a permanent

fitting: A permanent fitting may be installed in the

reclaimer wall, as shown in Figure 23, for taking frequent

static pressure readings. Permanent fittings must have a

barb to accommodate the 3/16" ID tubing and have a

means of sealing the fitting when the manometer is not in

use. Use silicone sealer or other sealant to seal around

the fitting to prevent leaks. The fitting should be capable

of being capped when the manometer tube is removed.

Sealing the fitting will prevent leaks that alter the

reclaimer’s separation efficiency. Air drawn into the

reclaimer will cause carryover of good media to the dust

collector.

5.8.7 Adjust the slide rule to align the zero with the

fluid level. Refer to the upper part of Figure 24.

5.8.8 Open cabinet door and turn the exhauster ON.

The negative (static) pressure will move fluid in the tube.

NOTE: Readings must be taken with the cabinet

door open and with the exhauster running.

5.8.9 To find the static pressure, add the number of

inches the fluid travels up one column to the inches the

fluid travels down the other column. Refer to the

example in Figure 24.

5.8.10 After taking the readings, replace the needle

protector. Close the manometer valves and store the

manometer in the original container in a clean area.

NOTE: If the manometer installation is permanent, the

manometer may remain on the reclaimer body after the

valves are closed.

6.0 PREVENTIVE MAINTENANCE

WARNING

Failure to wear an approved respirator and

personal protection when servicing dust-laden

areas of the cabinet and dust collector, as well as

when emptying the container, can result in lung

disease, serious skin or eye irritation, or other

health issues. Toxicity and health risk vary with

type of media and dust generated by blasting.

The respirator must be approved for the type of

dust generated. Identify all material being

removed by blasting and obtain a safety data

sheet (SDS) for the blast media.

To avoid unscheduled downtime, establish an inspection

schedule. Inspect all parts subjected to media contact,

including the gun and nozzle, media hose, flex hose,

wear plate, and all items covered in this section. Adjust

frequency of inspections based on the following:

 Usage: Cabinets often used require more

maintenance and inspections than those

occasionally used.

 Type of media: Aggressive media wears parts

faster than nonaggressive media.

With the exhauster OFF,

slide the rule to align the

zero with the fluid level.

In the example shown, fluid traveled up

the right column 1-3/4"

and down the left column 1-3/4".

Static pressure is determined by adding

the reading together. In the example, the

static pressure is 3-1/2".

To obtain the pressure reading: With

the exhauster ON, add the number of

inches the fluid travels up the column

to the inches the fluid travels down

the other column. The total is the

static pressure reading.

The manometer must be vertical

when taking pressure readings.

BNP® 6012 and 7212 SUCTION BLAST CABINETS Page 19

 Condition of parts being blasted: Heavily

contaminated parts require more maintenance to

the cabinet’s media recovery system.

 Friability of media: Media that rapidly breaks

down require more maintenance to the cabinet’s

media recovery system and dust collector.

6.1 Daily Inspection and Maintenance before

Blasting with the Air OFF

6.1.1 Check media level: Check media level in

reclaimer and refill as necessary.

6.1.2 Inspect reclaimer debris screen and door

gasket: Check reclaimer debris screen for debris. The

screen is accessible through the reclaimer door. With

the exhauster OFF, remove the screen and empty it

daily or when loading media. Empty the screen more

often if part blasted causes excessive debris. Do not

operate the machine without the screen in place;

oversized byproduct from blasting could plug the nozzle.

While the door is open, inspect the door gasket for wear

or damage. Replace the gasket at the first sign of wear.

6.1.3 Drain compressed-air filter: The cabinet is

equipped with a manual-drain air filter. Drain the filter at

least once a day and more often if water is present.

Moist air inhibits the flow of media. Drain the air line and

receiver tank regularly. If the filter does not remove

enough moisture to keep media dry and flowing, it may

be necessary to install an air dryer or aftercooler in the

compressed-air-supply line.

6.1.4 Inspect dust container: Refer to the dust

collector owner’s manual and empty dust containers.

Adjust schedule based on refill rate.

6.2 Daily Inspection During Blasting – Have

Someone Do the Following:

6.2.1 Inspect cabinet for dust leaks: During

operation, inspect cabinet door seals for media leaks.

Dust leaking from the inlet damper or other places on

the cabinet indicates saturated filter cartridge. Refer to

the dust collector owner’s manual.

6.2.2 Check exhaust air for dust: Dust discharge at

the dust-collector outlet indicates a leaking or damaged

filter cartridge. Check immediately. Note that a small

amount of dust egress is normal for a short time before a

new cartridge is seasoned.

6.2.3 Drain pulse reservoir: Refer to the dust

collector owner’s manual and drain the pulse reservoir

(manifold) at the end of each shift.

6.2.4 Cartridge pulsing: Refer to the CDC-1 Dust

Collector manual for pulsing instructions and pulse the

cartridge at least every half hour of blasting and before

turning OFF the exhauster. Dusty blasting conditions will

require more frequent pulsing. RPC-2 and RPH-2 Dust

Collectors are automatically pulsed at timed intervals.

6.3 Weekly Inspection and Maintenance Before

Blasting with Air OFF

6.3.1 Inspect view-window cover lens: Inspect the

window cover lens. Replace as needed, per Section 7.3.

6.3.2 Inspect gloves: Inspect gloves for wear. The

first sign of deterioration may be excessive static

shocks. Replace as needed, per Section 7.1.

6.3.3 Inspect BNP® Gun Assembly: Inspect internal

parts of the BNP Gun for wear. Inspection and

replacement of the air jet cover before it wears through

will prolong the life of the jet. Replace parts as needed,

per Section 7.2.

6.3.4 Inspect media hose: Inspect media hose for

thin spots by pinching it every 6 to 12 inches. Replace

the hose when it becomes soft.

6.4 Weekly Inspection During Blasting – Have

Someone do the Following:

6.4.1 Inspect flex hoses: Inspect flex hoses for leaks

and wear.

6.5 Monthly Inspection and Maintenance

6.5.1 Reclaimer wear plate and liners: Remove the

flex hose from the reclaimer inlet and use a light to

inspect the reclaimer wear plate or optional rubber

reclaimer liners for wear. If the rubber is worn through to

the backing metal, replace the wear plate per Section

7.8 or rubber liners per Section 7.9, as necessary.

6.6 Dust Collector

Reverse-pulse dust collectors are covered in a separate

manual. Refer to Section 1.1.1.

Zero BNP 6012 User manual

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