BNP
®
55 SUCTION BLAST CABINET
Page 2
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 23350, Rev G, 02/19
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 ................................................ 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 Assembly .................................................... 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 Reclaimer Wear Plate ................................ 7.8
Replacing or Installing Rubber Reclaimer Liners ........ 7.9
Replacing or Removing 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
Inlet-Air Regulator Assembly ...................................... 9.4
View-Window Assembly .............................................. 9.5
Metering Valve, BNP ................................................... 9.6
Foot Pedal Assembly ................................................... 9.7
LED Light Assembly ................................................... 9.8
Cabinet Controls and Plumbing .................................. 9.9
Replacement Reclaimer Assemblies ........................ 9.10
300 CFM Reclaimer Replacement Parts ................... 9.11
600 CFM Modular Reclaimer Replacement Parts ..... 9.12
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
Refer to Figure 1 for arrangement of components with a
CDC-1 Dust Collector. Figure 2 shows the arrangement
with a RPC-2 600 cfm (not available in 300 cfm) Reverse-
Pulse Dust Collector with dust drawer. To upgraded, an
RPC-2 collector may be added at any time.
1.5
Theory of Operation
1.5.1
Once the cabinet is correctly set up and turned
on, the cabinet is then ready for operation by actuation
of the foot pedal. Fully depressing 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.
