Clemco Zero BNP6012P 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® 6012P and 7212P
Pressure Blast Cabinets
O. M. 27724
DATE OF ISSUE: 12/13
REVISION: B, 04/19
© 2019 CLEMCO INDUSTRIES CORP.
One Cable Car Dr.
Washington, MO 63090
Phone [phone]
Fax [phone]
Email: [email protected]
www.clemcoindustries.com

BNP® 6012P and 7212P PRESSURE BLAST CABINETS Page 1
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724, Rev. B, 04/19
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 7012 series
pressure 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 Dust Collectors, manual stock no. ...... 21449
A separate owner’s manual stock no. 20951 is provided
for the Sentinel Media Metering Valve.
1.1.2 The instructions contain important information
required for safe operation of the cabinets. Before using
this equipment, all personnel associated with the blast
cabinets’ 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.
W
ARNING
Warning indicates a hazardous situation that, if
not avoided, could result in death or serious
injury.
DANGER
Danger 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
Blast Machine and Controls ....................................... 1.6
Dust Collector Options ............................................... 1.7
Nozzle Options .......................................................... 1.8
Reclaimer Options ..................................................... 1.9
Metering Valve Options ............................................ 1.10
Blasting Media ......................................................... 1.11
Compressed-Air Requirements ............................... 1.12
Electrical Requirements ........................................... 1.13
INSTALLATION ........................................................ 2.0
General Installation Notes ......................................... 2.1
Assemble Blast Machine and Reclaimer ................... 2.2
Support the Blast Machine ......................................... 2.3
Connect Conveying (flex) Hose ................................. 2.4
Attach Blast-Machine Exhaust Hose ......................... 2.5
Connect Blow-Off Hose ............................................. 2.6
Connect Blast Hose ................................................... 2.7
Connect Urethane Control Tubing ............................. 2.8
Connect Compressed-Air Supply Lines ..................... 2.9
Ground Cabinet and Dust Collector ......................... 2.10
Connect Electrical Service ....................................... 2.11
Anchor Blast Machine .............................................. 2.12
Set Air-Inlet Damper ................................................ 2.13
Final Assembly ......................................................... 2.14

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724, Rev. B, 04/19
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
OPERATION ............................................................. 4.0
Media Loading ........................................................... 4.1
Media Unloading ........................................................ 4.2
Loading and Unloading Parts .................................... 4.3
Blasting Operation ..................................................... 4.4
Operation and Function of the Choke Valve .............. 4.5
Blasting Technique .................................................... 4.6
Stop Blasting .............................................................. 4.7
Shutdown ................................................................... 4.8
ADJUSTMENTS ........................................................ 5.0
Blasting Pressure (pilot regulator) ............................. 5.1
Media Metering (media flow) ..................................... 5.2
Reclaimer Static Pressure ......................................... 5.3
Optional Externally Adjustable Vortex Cylinder ......... 5.4
Door Interlocks ........................................................... 5.5
Cabinet Air-Inlet Damper ........................................... 5.6
Optional Manometer .................................................. 5.7
PREVENTIVE MAINTENANCE ................................ 6.0
Daily Inspection and Maintenance Before Blasting .... 6.1
Check media level ............................................... 6.1.1
Inspect reclaimer debris screen and door gasket .. 6.1.2
Compressed-air filter ........................................... 6.1.3
Inspect couplings .................................................. 6.1.4
Inspect dust container ......................................... 6.1.5
Daily Inspection During Blasting ................................. 6.2
Inspect blast hose couplings and nozzle holder ... 6.2.1
Inspect blast machine .......................................... 6.2.2
Check cabinet for dust leaks ............................... 6.2.3
Check dust-collector exhaust air for dust ............ 6.2.4
Drain pulse reservoir ........................................... 6.2.5
Cartridge pulsing ................................................. 6.2.6
Weekly Inspection and Maintenance Before Blasting .. 6.3
Inspect view-window cover lens .......................... 6.3.1
Inspect gloves ...................................................... 6.3.2
Inspect blast hose ................................................ 6.3.3
Inspect nozzle ..................................................... 6.3.4
Inspect outlet valve .............................................. 6.3.5
Weekly Inspection During Blasting ............................ 6.4
Inspect blast machine plumbing .......................... 6.4.1
Inspect flex hoses ................................................ 6.4.2
Monthly Inspection and Maintenance ......................... 6.5
Inspect reclaimer wear plate or liners .................. 6.5.1
Inspect pop-up valve ............................................. 6.5.2
Inspect pop-up seal .............................................. 6.5.3
Dust Collector ............................................................. 6.6
SERVICE MAINTENANCE ........................................ 7.0
Gloves ......................................................................... 7.1
Blast Hose and Nozzle ............................................... 7.2
View-Window Cover Lens .......................................... 7.3
View-Window Replacement ........................................ 7.4
Window-Gasket Replacement .................................... 7 . 5
Window-Frame Removal ............................................ 7.6
LED Light Assembly .................................................... 7.7
Replacing Pop-Up Valve ............................................. 7.8
Replacing Pop-Up Valve Seal .................................... 7.9
Replacing Reclaimer Wear Plate .............................. 7.10
Replacing or Installing Rubber Reclaimer Liners ....... 7.11
Removing or Replacing Reclaimer Inlet Baffle .......... 7.12
Sentinel Metering Valve ............................................ 7.13
Reverse-Pulse Dust Collector ................................... 7.14
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
Air only (no media) comes out the nozzle ................... 8.7
Neither media nor air comes out the nozzle ................ 8.8
Blast machine does not pressurize .............................. 8.9
Blast machine does not depressurize ....................... 8.10
Heavy media flow ...................................................... 8.11
Media buildup in cabinet hopper ............................... 8.12
Static shocks ............................................................. 8.13
Dust leaking from cabinet ......................................... 8.14
Dust leaking from dust collector ................................ 8.15
ACCESSORIES AND REPLACEMENT PARTS ....... 9.0
Optional Accessories .................................................. 9.1
Cabinet Replacement Parts ........................................ 9.2
View Window .............................................................. 9.3
LED Light Assembly .................................................... 9.4
Foot Pedal ................................................................... 9.5
1" Diaphragm Outlet Valve ......................................... 9.6
Plumbing and Cabinet Controls .................................. 9.7
Blast Machine ............................................................. 9.8
Sentinel Valve Replacement Parts ............................. 9 . 9
Flex Hose and Wye Pipe, and Adaptors ................... 9.10
Replacement Reclaimer Assemblies ........................ 9.11
900 cfm Reclaimer, for 16" Dia. Blast Machine ......... 9.12
1200 cfm Reclaimer, for 16" Dia. Blast Machine ....... 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, angle
and distance of the nozzle from the blast surface. BNP
pressure cabinets consist of four major components:
 Cabinet Enclosure
 Reclaimer
 Blast Machine
 Dust Collector

BNP® 6012P and 7212P PRESSURE BLAST CABINETS Page 3
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724, Rev. B, 04/19
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 900 cfm reclaimer mounted atop the
blast machine; the larger 1200 and 1800 reclaimer is
mounted in the same manner but supported by legs.
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 ft and 12 ft when the top access
door is open. To upgrade, an RPC-2 or RPH-2 collector
may be added at any time.
1.5 Theory of Operation
1.5.1 Once the components are correctly set up and
turned ON, the cabinet is ready for operation by
actuation of the foot pedal. Fully depressing the foot
pedal pressurizes the blast machine, causing media to
be propelled through the blast hose and 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 hopper. 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,
reusable media is screened for oversize particles and
returned to the reclaimer 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, the blast
machine depressurizes and blasting stops. Media stored
in the reclaimer automatically refill the blast machine
when blast machine pressure equalizes and the pop-up
valve drops.
Figure 1
1200 cfm reclaimers and larger are
mounted on legs, and the blast machine
is bolted under the reclaimer flange.
LED Light Assemblies
Blast Nozzle
Reclaimer
Blast Hose
Blast Machine
Light-Lined
Flex Hose
Blow-Off Hose
Pilot Regulator
(blast pressure)
Foot Pedal
Blow-Off Nozzle
Air Intake Stack w/Damper
Exhaust Hose
To muffler on rear cabinet wall
CDC-1 Dust Collector
Dust Collector Damper
Unlined Flex Hose
Externally Adjustable Vortex
(Optional on system with CDC-1 Dust Collector)
Debris
Screen
Compressed-Air Filter
Attachment for compressed air supply
Door Interlock
On-Off Switches

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
1.6 Blast Machine and Controls
1.6.1 Clemco certifies that its blast machines
(pressure vessels) conform to the ASME (American
Society of Mechanical Engineers) Boiler and Pressure
Vessel Code, Section VIII, Division 1. It is the owner’s
responsibility to maintain the integrity of the vessel in
accordance with state regulations. Regulations may
include regular inspection and hydrostatic testing as
described in National Board inspection code and
jurisdictional regulations and/or laws.
WARNING
Welding, grinding, or drilling on the blast
machine can weaken the vessel. Compressed-
air pressure can cause a weakened blast
machine to rupture, resulting in death or
serious injury. Welding, grinding, or drilling on
the vessel without a National Board R stamp
voids the Clemco ASME certification.
1.6.2 All welding repairs to the vessel must be
performed by certified welders at shops holding a
National Board R stamp. Welding performed by any
welder not properly qualified per the ASME code voids
the Clemco ASME certification.
1.6.3 Do not exceed the maximum working pressure
rating (PSI) of the blast machine. The maximum
pressure rating is stamped into the ASME nameplate,
which is welded to the side of the vessel.
WARNING
Excessive compressed-air pressure can cause
a blast machine to rupture. To prevent serious
injury or death, do not exceed the rated
pressure of the blast machine.
1.6.4 OSHA does not require pressure-relief valves
on blast machines when air compressors supplying air
to the blast machines are built to American Society of
Mechanical Engineers Boiler and Pressure Vessel
Code, Section VIII, Division 1 and comply with OSHA
regulation 29 CFR 1910.169, which refers to the ASME
code when describing the necessity of pressure-relief
valves on compressed-air equipment. DO NOT operate
blast machines with air compressors that are not
equipped with properly functioning pressure-relief valves
with maximum pressure less than or equal to the
maximum-allowable working pressure (MAWP) stamped
on the vessel nameplate.
1.6.5 When the cabinet is set up, the blast machine is
ready to blast by actuating the foot pedal. Pressing the foot
pedal opens the normally closed main inlet regulator and
closes the normally open outlet valve. The incoming air
pressurizes the blast machine, and blasting begins.
When pressure on the foot pedal is released, the blast
machine depressurizes, and blasting stops.
1.7 Dust Collector Options
1.7.1 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
dust collector is ordered at time of purchase. Refer to
manual number 28225.
1.7.2 RPC-2 Dust Collectors: Shown in Figure 2,
this collector is available in 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.
Figure 2
1.7.3 RPH Dust Collector: The RPH-2 (900 cfm) and
RPH-3 (1200 cfm) are set up and operate 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 drum. An
Duct Inlet
RPC-2 Dust Collector
Dust-Collector Damper
*Adjustable
Vortex
Dust Drawer
* The vortex is standard when cabinet is provided with
RPC-2 or RPH Dust Collector.

BNP® 6012P and 7212P PRESSURE BLAST CABINETS Page 5
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
RPH is standard with 1200 cfm models. Refer to manual
number 21449.
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.
1.7.4 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.
1.8 Nozzle Options
1.8.1 Unless otherwise specified at the time of
purchase, cabinets are provided with a 3/16" orifice
tungsten carbide nozzle. Optional 1/8", 1/4", and 5/16"
orifice nozzles are also available. The reclaimer size
determines the maximum-allowable nozzle size. The
table in Figure 3 shows the maximum nozzle size
recommended under normal conditions.
RECLAIMER SIZE MAXIMUM NOZZLE SIZE
900 cfm 1/4 orifice
1200 cfm 5/16 orifice
1800 cfm 5/16 orifice
NOTICE
Nozzles larger than 1/4 will substantially increase
wear on standard 1/2 ID blast hose. Optional 3/4
Supa hose should be used with 5/16 nozzles.
Figure 3
Normal conditions are moderate part contamination,
media breakdown, media flow, media size, and damper
setting, and are further explained within the contents of
the manual.
1.8.2 Nozzles with an orifice larger than those
recommended could cause air leakage from the cabinet
and impair recovery from the cabinet hopper. 5/16
orifice nozzles will substantially increase wear on 1/2
blast hose. Use optional 3/4 Supa hose with 5/16
nozzles. Refer to Section 9.1: Optional Accessories.
1.8.3 Use boron carbide nozzles when blasting with
aggressive media, as noted in Section 1.11.4. Nozzles
lined with boron carbide extend nozzle wear life. Refer
to Section 9.1: Optional Accessories.
1.9 Reclaimer Options
1.9.1 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
4 for 1800 cfm applications.
1.9.2 Replaceable rubber reclaimer liners:
Replaceable rubber reclaimer-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 1.11.4. Rubber liners are
available for a reclaimer that has a removable top and
designed to accept liners. Reclaimer liners are shown in
Section 9.1, Figure 41.
1.9.3 Externally adjustable vortex option: The
vortex fine-tunes media separation; refer to Section 5.4
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.
1.10 Metering Valve Options
1.10.1 Unless specified at the time of purchase,
cabinets are supplied with a fine-mesh Sentinel
metering valve. The valve is for use with 50-mesh and
finer media, and #10 and finer glass bead. The optional
Sentinel metering valve is recommended when using
media coarser than 50-mesh. Conversions kits listed in
Section 9.1 easily convert the valves.

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
1.11 Blasting Media
1.11.1 Always use media specifically manufactured for
blasting and 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 (with the appropriate
metering valve, as noted in Paragraph 1.10) specifically
manufactured for blasting can be used in ZERO
cabinets. The listing of media sizes shown in this
section and in Figure 4 are provided as a guideline only.
The guideline is based on standard 3/16 orifice nozzle
and average conditions with variables such as blast
pressure, media-air mixture, visibility inside the cabinet,
humidity, and reclaimer cleaning-rate.
Several variables that affect 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 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, carry over to the dust collector. Media
coarser than those recommended may be too dense for
the reclaimer to recover from the cabinet hopper.
1.11.2 Steel shot and steel grit: Steel shot or steel
grit may be used in BNP cabinets configured for using
steel media. Refer to Figure 4 for steel media limitations.
Using steel media requires a smaller diameter
conveying hose (usually reduced one size from
standard) and a 1200 cfm or larger reclaimer. Steel grit
or shot is too heavy to use with cabinets equipped with
a 900 cfm reclaimer. Rubber curtains should be used to
protect the cabinet walls from peening and rapid wear.
For these applications, cabinets can be ordered with
reduced-size flex hose appropriately sized for steel, and
with rubber curtains installed. They may also be field
installed later. Refer to Section 9.1: Optional
Accessories. NOTE: Steel grit or shot is too heavy to
use with cabinets equipped with 900 cfm reclaimers.
1.11.3 Sand and slag: Sand and slag media are not
suitable for cabinet use. Sand should NEVER be used
for media blasting because of the respiratory hazards
associated with media containing free silica. Slags are
not recommended because they rapidly break down and
are not recyclable.
1.11.4 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. NOTE Rubber-lined reclaimers are
available as factory-installed items, or field-installed
liners can be installed later on reclaimers if they have
removable tops and are designed to accept liners.
Nozzles lined with boron carbide extend nozzle wear
life. Refer to Section 9.1: Optional Accessories.
This guideline to media selection is based on standard 3/16” orifice nozzle (3/8” with plastic and similar weight
media blasting at low pressure) and average conditions, such as air pressure, media-air mixture, visibility,
contamination of parts being cleaned, humidity, media friability, 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, carry over to the dust collector. Media coarser than those recommended
may be too dense for the reclaimer 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 1.10.8 No. 8 to No. 12 54 to 180-Mesh
1200 cfm with 6” inlet 50 to 120 S-230 to S-70 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 1.10.8 No. 4 to No. 12 46 to 180-Mesh
1800 cfm with 7” inlet 25 to 120 S-280 to S-70 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 1.10.8 No. 4 to No. 12 36 to 180-Mesh
Figure 4

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
1.11.5 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.
1.11.6 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. Reclaimers with welded-on tops
require grinding to remove the baffle and once it is
removed it cannot be replaced.
1.11.7 Plastic media: Plastic media requires a blast
machine with a 60-degree conical bottom. Refer to
Clemco’s Aerolyte® cabinet brand.
1.11.8 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). Refer to Clemco’s Aerolyte cabinet line for
cabinets that are specifically designed for use with
bicarbonate of soda.
1.12 Compressed-Air Requirements
1.12.1 The size of the compressor required to operate
the cabinet depends on the size of the nozzle and blasting
pressure. Unless otherwise specified, cabinets are
supplied with a 3/16” orifice nozzle. The table in Figure 5
shows air consumption of nozzles when new. It does not
show the recommended compressor size. As nozzles
wear, they will consume up to 70% to 80% more air.
Consult with a compressor supplier for a suggested
compressor size based on the air consumption. NOTE: A
separate air line is required for the reverse-pulse dust
collector; refer to the dust collector owner’s manual.
Compressed-Air Consumption *(cfm)
Nozzle Air Pressure (psi)
size 50 60 70 80
1/8" 11 13 15 17
3/16" 26 30 33 38
1/4" 47 54 61 68
5/16" 77 89 101 113
* Figures are approximate and for reference only,
and may vary for different working conditions.
Several variables, including media flow and
nozzle wear, affect cfm consumption.
Figure 5
1.12.2 The air filter at the blast machine inlet removes
condensed water from the compressed air. The filter
automatically drains when moisture fills the bowl to a
certain level. Its use is especially important in areas of
high humidity or when fine-mesh media are used.
Moisture causes media to clump and inhibits free flow
through the metering valve. 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.
1.13 Electrical Requirements
All wiring external to the cabinet is provided by the user
to comply with local electrical codes.
1.13.1 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 reclaimer: 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.
Additional wiring information is in Section 2.11.
2.0 INSTALLATION
2.1 General Installation Notes
2.1.1 Refer to Figure 1 (and Figure 2 for optional
reverse-pulse collector) for the general arrangement and
Figure 9 for the control line schematic. Select a 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 in front of the dust
collector to remove the dust drawer without tipping.
Ideally, locate the blast machine directly behind the
cabinet with the blast-hose connection toward the
cabinet. The reclaimer may be rotated on the blast
machine 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.

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
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.
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 Assemble Blast Machine and Reclaimer
Figure 6.
1200 and 1800 cfm reclaimers are freestanding and
mounted on support legs. Slide the blast machine
under the reclaimer, apply gasket, and bolt flanges
together, as noted below.
WARNING
900 cfm reclaimers weigh approximately 150
lbs. When installing or removing the reclaimer,
it must be adequately supported and secured to
appropriate lift equipment. Failure to secure
and use proper lift device can result in injury.
2.2.1 Apply adhesive-backed strip gasket to the top of
the flange on the blast machine. Punch out an opening
at each bolt hole.
2.2.2 If the optional storage segment is used, place it
on the blast machine. The access door should be on the
bottom and rotated to allow access to the door. Bolt into
place. Apply adhesive-backed gasket to the upper
flange, as described in Paragraph 2.2.1.
WARNING
Do not work under the reclaimer while it is
hanging from the lifting device. Severe injury or
death can occur if the reclaimer is released
before it is secured to the blast machine.
2.2.3 Use a lift, raise the reclaimer over the blast
machine assembly, and lower it in place. Attach with
fasteners provided.
Figure 6
2.3 Support the Blast Machine
2.3.1 Use chains, cables, or other means to
temporarily support the blast machine and reclaimer
during final assembly until the machine can be
anchored,
2.4 Connect Conveying (flex) Hoses – Figure 7
Refer to Page 42, Figure 50 for hose sizes.
Figure 7
Apply 2" x 1/8" strip gasket to
blast machine flange.
Bolts
Punch out opening for bolts
at each bolt hole location.
Reclaimer
Flat Washers, Lock
Washers, and Nuts
Blast Machine
Smallest Diameter Hose
Wye Pipe Adaptor
Intermediate Diameter Hose
Largest Diameter Hose
Clamps
Clamps
Hopper Transition Tubes

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
2.4.1 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. In
order 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.
2.4.2 Connect the intermediate diameter flex hose
between the wye pipe and reclaimer inlet adaptor.
Clamp the flex hose securely with worm clamps
provided.
2.4.3 The largest diameter hose attaches to the
reclaimer outlet, which will be connected later.
2.5 Attach Blast-Machine Exhaust Hose –Figure 8
2.5.1 Screw the male end of the exhaust hose into the
1" coupling located on the rear cabinet wall, turning the
hose as required. Connect the female swivel end to the
male adaptor on the blast-machine outlet valve.
Some items removed or rotated for clarity.
Figure 8
2.6 Connect Blow-Off Hose
2.6.1 Attach the 1/2" blow-off hose coming from the
cabinet hopper to the compatible fitting on the blast
machine piping located between the air filter and
pressure regulator. Refer to the schematic in Figure 9.
Figure 9
In
Unregulated Air
Door Interlock Valve
Out
Tee
Area within broken lines
are mounted on cabinet.
Blast Machine
Exhaust Hose
Male Adaptor
Outlet Valve Pipe Coupling
Female Swivel
Muffler
Blast-Hose
Support
1/8 Urethane Tubing
Foot Pedal
Out
Compressed-Air Inlet
3/8 Poly Tubing
Outlet Valve
Media Metering Valve
Blow-off Nozzle
Pressure Regulator
Air Filter
Blast-Hose Connection
Pilot Regulator Regulated Air
4-Way Valve
Accessory
Plug
In
Hose Adaptor
Directional arrows on control
lines shows direction of air flow.
Control-Line Filter 1/8 Urethane Tubing
Exhaust Hose Assembly
To the 1" coupling located
on left rear of cabinet.
3/8 Poly Tubing

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
2.7 Connect Blast Hose – Figure 10
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.
2.7.1 Connect the blast hose coming from the blast-
hose support, located on the rear-outside cabinet wall, to
the coupling at the bottom of the blast machine, as
shown in Figure 10. Make sure coupling gaskets are in
place and couplings are secured with safety lock pins
and that the hose is secured with a safety cable.
Once installed, remove slack from the safety cable.
Figure 10
2.8 Connect Urethane Control Tubing
2.8.1 Uncoil the brown 1/8" urethane control tubing.
The end of each tubing is numbered 1, 2, or 3. Connect
the tubing to the adaptor with the corresponding number
on the top of the pressure regulator, piping, and 4-way
air valve. Refer to the schematic in Figure 9 to confirm
the connections.
2.9 Connect Compressed-Air Supply Line(s)
Figure 11
A separate air line is required for the dust-collector
pulse. Refer to the dust-collector owner’s manual.
WARNING
Failure to observe the following before
connecting the equipment to the compressed-
air source can cause serious injury or death
from the sudden release of compressed air:
 Lockout and tagout the compressed-air
supply.
 Bleed the compressed-air supply line.
2.9.1 Apply thread sealant to the male threads of an
air fitting that is compatible with the air-supply hose
fitting, as noted in Section 2.9.2, and install it onto the
1"-NPT air filter located at the blast machine inlet, as
shown in Figure 11. Note that the style of connection
shown in Figure 11 is for reference only.
WARNING
Hose disconnection while under pressure can
cause serious injury or death. Use safety lock
pins or safety wire to lock twist-on type air-hose
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.
Figure 11
1"-NPT Air Filter
Air Fitting
Use safety lock pins to secure
twist-on couplings.
Air-Supply Hose
Apply thread sealant to male threads
Use safety cable to prevent separate hose from whipping.
Once installed, all slack must be removed from the cable.
Blast Machine Coupling
Blast Hose
Lock Pin
Safety Cable
Coupling Gasket

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2.9.2 Install an isolation valve at the air source to
enable depressurization for service, and connect a 1" ID
or larger air line from the air source to the air filter on the
blast machine. 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
depressurization of the compressed-air lines
before performing maintenance.
2.9.3 Refer to the dust-collector owner’s manual and
connect a compressed-air line to the pulse manifold.
2.10 Ground Cabinet and Dust Collector
2.10.1 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.
2.11 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 to the cabinet is provided by the user
to comply with local electrical codes.
2.11.1 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.
2.11.1.1 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.
2.11.1.2 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 and RPH dust collectors, until the amperage is
within the specifications shown on the motor plate.
2.11.1.3 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.
2.12 Anchor Blast Machine
2.12.1 After all the components are in their permanent
positions, anchor the machine to the floor using the holes
located in the blast-machine leg pads and remove the
temporary supports.
2.13 Set Air-Inlet Damper – Figure 12
Figure 12
2.13.1 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 2.13.2.
Degrees Label
Air-Inlet Damper
Damper Handle
Align handle to degrees, as
noted in Section 2.13.2.

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
2.13.2 The label on the damper show the settings in
degrees. The initial setting should align the handle, as
noted.
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)
2.13.3 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.
2.14 Final Assembly
2.14.1 Attach the remaining flex hose between the
reclaimer outlet and dust collector inlet.
2.14.2 Insert a short length of 3/8" tubing into the
automatic drain at the bottom of the compressed-air
filter, as shown in Figure 13, and place the other end
into a pail. When the filter automatically drains, the water
will drain into the pail.
Figure 13
2.14.3 Position the foot pedal on the floor at the front of
the cabinet.
2.14.4 A package of five view-window cover lenses is
supplied with the cabinet. Install a cover lens, per
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 lined nozzle.
Field-installed (or replacement factory installed) kits
consist of black-rubber cabinet curtains (refer to Section
3.2 for curtain installation), a boron carbide lined 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 Curtains Installation – Figure 14
3.2.1 Match the curtains to the corresponding wall and
door as shown in Figure 14. 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 14
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 14. 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.
Water Pail
Compressed-Air Filter
3/8" Tubing
J-Hook
No. 10 Self-Drill Screw Washer
Nut
Lock Washer Batten Strip
Machine Screw

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© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
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 5.3 to adjust
static pressure. Refer to Section 5.7 for instructions on
using the manometer.
3.4 Armrest
3.4.1 Assemble the armrest and mounting brackets,
as shown in Figure 15.
Cabinet model shown is for reference.
Figure 15
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.
3.4.3 Drill a 3/8" hole at both locations and mount the
armrest using 5/16-NC 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 later.
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 workcar 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 16 for arrangement of the
major components.
Figure 16
3.5.2 Install inside track – Figure 17
3.5.2.1 Lay the inside track on the cabinet hoppers and
above the grate, as shown in Figure 17.
Figure 17
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-NC 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 18
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" from the top rails on the inside track.
5/16 x 1" Cap Screw,
Flat Washer, Lock
Washer and Nut
Armr
est
3/8 x 1" Cap Screw
and Lock Washer
Match drill 4
bolt holes.
Door and grates removed for clarity.
End Support
Bar
Insert angled
tabs into hopper
sleeves.
Release Pin (3)
Inside Track
Outside Track
Release Pin (3)
Workcar
Turntable
Angled
Mounting Tabs
Hinged Track
Leveling Foot Pads

BNP® 6012P and 7212P PRESSURE BLAST CABINETS Page 14
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
42"
Figure 18
3.5.4 Attach hinged track – Figure 19
Figure 19
3.5.4.1 With the door open, place the hinged track on
the inside and outside track supports, as shown in
Figure 19. 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 20.
3.5.5 Turntable workcar and hinge-track operations
Figure 20
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 20
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 and 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.
Outside Track
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
Quick-Release Pin
Track Stops
Pin Bracket
Anchor Holes (4 Places)
Quick-Release Pin
Leveling Foot Pads

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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
collectors and cause premature cartridge
failure.
4.1 Media Loading
4.1.1 Media capacity: Media capacity is
approximately 2 cuft. Full capacity is when media is at
level of the pop-up valve.
4.1.2 Media loading: With the exhauster OFF, add
clean, dry media by pouring it into the reclaimer through
the reclaimer door. 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
4.2.1 To empty the cabinet and blast machine of
media, turn the exhauster ON and blow off the cabinet
interior until all media is recovered from the cabinet.
Reduce pressure to 40 psi. Place an empty container,
such as a bucket, on the cabinet grate. Remove nozzle
and nozzle washer, close the door, close the choke valve,
and press the foot pedal. Direct media flow into the
container. Empty the container when full or before it is too
heavy to handle, and repeat the process until the machine
is empty. Return the choke valve to the full open position.
Clean the nozzle holder threads and inspect the threads
on the nozzle and nozzle holder before reinstalling the
nozzle washer and nozzle. If complete purging of media is
required, use a vacuum to clean media residue in cabinet
hopper and blast machine head.
4.3 Loading and Unloading Parts
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.
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.
4.3.3 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 door is open.
4.4 Blasting Operation
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.
4.4.1 Slowly open the air supply to the blast machine.
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. If parts are oily or greasy, degrease
and dry them prior to blasting.
4.4.4 Close door; the door interlock system will
prevent blasting if either door is open.

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4.4.5 Insert hands into blast gloves.
4.4.6 To blast, hold the nozzle holder or hose just
behind the nozzle holder, point the nozzle toward the
object to be blasted, and apply pressure to the foot
pedal; blasting will begin almost 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
risks 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.
4.4.7 Adjust the pilot pressure regulator to the
required blasting pressure, per Section 5.1. The
regulator is located left of the view window. NOTE:
Pressure registers on the gauge only while blasting.
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 Operation and Function of the Choke Valve
Figure 21
NOTICE
Do not blast with choke valve closed or partially
closed. Prolonged blasting with the choke valve
partially closed will accelerate wear on the
metering valve.
4.5.1 Always fully open the choke valve while
blasting; open is when the handle is vertical and aligned
with the piping, as shown in Figure 21.
4.5.2 Closing the choke valve while blasting lowers
pressure in the pusher line from the pressure in the
vessel. Closing the valve forces media through the
metering valve to clear minor blockage, such as damp
media, or it is used to rapidly empty the machine to
change media.
Figure 21
4.6 Blasting Technique
4.6.1 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 6" from the surface of the part.
4.7 Stop Blasting
4.7.1 To stop blasting, remove foot pressure from the
top of the foot pedal.
4.7.2 The blast machine refills with media stored in
the reclaimer each time the foot pedal is released.
Refilling takes approximately 15 seconds.
4.7.3 Use the blow-off nozzle to blow media off parts.
4.7.4 Keep door closed and exhauster running until
the cabinet is clear of all airborne dust.
4.7.5 Unload parts.
4.8 Shutdown
4.8.1 Shut off the air-supply valve, bleed the air-
supply line, and drain the compressed-air filter and dust-
collector pulse reservoir.
4.8.2 Switch OFF the lights and exhauster.
Blast Machine Inlet Piping
Choke Valve
Valve is shown open;
the position of the
handle is aligned with
the piping.

BNP® 6012P and 7212P PRESSURE BLAST CABINETS Page 17
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
5.0 ADJUSTMENTS
5.1 Blasting Pressure (pilot regulator)
5.1.1 The pilot pressure regulator, (located left of the
view window) enables the user to adjust blasting
pressure 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. Optimal production can only be
achieved when pressure is carefully monitored.
5.1.2 When blasting below 40 psi, first pressurize the
blast machine at 40 psi and then turn the pressure to the
required setting before blasting the part. If the initial
pressure is below 40 psi, the pop-up valve may not seal.
Figure 22
5.1.3 Pressure registers on the gauge only while
blasting. To adjust pressure, begin blasting and hold the
nozzle securely with the right hand. Use the left hand to
unlock the knob by pulling it out, as shown in Figure 22,
Turn it clockwise to increase pressure or counterclockwise
to decrease pressure. Once operating pressure is set,
push the knob in to lock it and maintain the setting.
NOTE: The operator may find it easier to adjust
pressure if the knob is unlocked before blasting and
when pressure is set, stop blasting to lock the knob.
5.2 Media Metering (media flow) – Figure 23
These instructions and the illustration in Figure 23 are
for a standard cabinet with Sentinel metering valve.
Optional metering valves may function differently, but
the process is similar. Refer to the metering valve
owner’s manual for the operation of the valve provided.
5.2.1 Adjust media flow using the metering valve
located at the bottom of the blast machine. The valve is
closed when the handle is fully to the right. To adjust,
begin with the valve closed, press the foot pedal, and
have someone slowly move the handle to the left to
increase media flow. Allow time for the flow to stabilize
before further adjusting. The valve is fully open when the
handle is at the full-left position. The optimum flow rate
depends on the type and size of media and blasting
pressure, and can best be determined by experience.
Use as little media as possible to do the job while
maintaining the best cleaning rate. Generally, with the
correct mixture, media can be seen as light discoloration
as it exits the nozzle.
OPEN
CLOSE
Figure 23
5.3 Reclaimer Static Pressure (dust-collector
outlet damper)
5.3.1 Correct static pressure varies with the size of
reclaimer and the size, weight, and type of media.
5.3.2 Adjust static pressure by opening (handle in line
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 and RPH dust collectors. If the damper is not
opened far enough, the reclaimer will not remove fines,
resulting in dusty media, 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.
Control Handle
Some items are
removed for clarity.
Move handle to
the left to increase
media flo
w
.
Move handle to the
right to decrease
media flow.
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
p
ressure.
Push knob in to lock.

BNP® 6012P and 7212P PRESSURE BLAST CABINETS Page 18
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
5.3.3 A manometer is useful when adjusting or
monitoring static pressure. The optional manometer kit
is listed in Section 9.1: Optional Accessories. Refer to
Section 5.7 for manometer operation. The following are
static-pressure starting points for given media. Static
pressure may need to be lower with finer media and
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
5.3.2. 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 & Coarser .......................... 4" – 5"
Aluminum Oxide 80 & 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 1.11 for media limitations.
5.3.4 If the damper has been adjusted and carryover
or excessive dust in the media continues, the optional
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 5.4.
5.4 Externally Adjustable Vortex Cylinder
The vortex is an option with 900 cfm reclaimers,
standard with 1200 reclaimers.
The externally adjustable vortex is an option when the
cabinet is provided with a CDC-1 Dust Collector. The
vortex is standard with reclaimers when the cabinet is
provided from the factory with an RPC or RPH Dust
Collector.
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 5.3. Once the damper is adjusted, adjust the
cylinder.
5.4.1 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 24) of the vertical position.
5.4.2 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.
5.4.3 To remove fewer fines: (Excessive usable
media is carried to the dust collector.) Lower the vortex
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 and cause abnormally
high static pressure.
Figure 24
5.4.4 When using media finer than 180-mesh, the
inlet baffle of the reclaimer may need to be removed.
Refer to Section 1.11.6.
5.5 Door Interlocks – Figure 25
WARNING
Never attempt to override the interlock system.
Doing so can result in injury from unexpected
blasting.
5.5.1 The door interlocks disable the blasting control
circuit when either door is open. To enable blasting, the
door-interlock switch must be engaged when the 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.
5.5.2 Close cabinet door.
5.5.3 Loosen the actuator bracket screws and
adjusting screw nut. Move the actuator bracket up or
down, and the screw sideways, to center the screw on
the over-travel stop. Tighten the bracket screws.
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® 6012P and 7212P PRESSURE BLAST CABINETS Page 19
© 2019 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 27724 Rev. B, 04/19
5.5.4 Turn the adjusting screw in or out as required to
engage the switch without applying excessive pressure
on it. Tighten the adjusting screw nuts.
Figure 25
5.5.5 Test the operation with the door open and then
again 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
opened and permit blasting when the door is closed.
5.6 Cabinet Air-Inlet Damper
5.6.1 Once the inlet is initially set, per Section 2.13, 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 5.3. Reclaimer pressure must be set before
cabinet pressure.
5.6.2 Using a manometer (as noted in Section 5.7 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 and 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 running, the gloves
should be inflated, but not elevated off the grate.
5.7 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; refer to Paragraph 5.7.6.3. 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 readings taken above
the reclaimer. The readings are reference points, so
readings should be taken using the same method each
time the reading is taken.
5.7.1 Refer to instructions packed with the manometer
for preparing and operating the manometer.
5.7.2 Connect one end of the 3/16" ID tubing to one of
the tubing connectors (elbow) at the top of the
manometer by pushing it over the barbed adaptor.
5.7.3 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.
5.7.4 Open both manometer valves (elbows), per
manometer instructions.
5.7.5 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.
5.7.6 Needle placement: Figure 26 shows the
manometer setup for taking both periodic and frequent
static-pressure readings.
5.7.6.1 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.
5.7.6.2 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.
Over-Travel Stop
Adjusting Screw Nut
Loosen, and move sideways to
center the adjusting screw on the
over-travel stop.
Adjusting Screw
Adjust the screw to depress the
valve stem when door is closed.
Actuator Adjusting Bracket
Loosen the bracket screws and
move the bracket up or down to
center the adjusting screw on the
over-travel stop.
Bracket Screws
Cabinet Door