BNP DOUBLE 65 and DOUBLE 220 - DUAL STATION SUCTION CABINET
Page 4
© 2016 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 22963 Rev. D, 07/16
This table offers a guideline to media selection based on standard 5/16
orifice nozzle (5/32
air jet) and average
conditions, (air pressure, media/air mixture, visibility, contamination of parts being blasted, 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 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
* Standard reclaimer inlets
Figure 3
1.8.4 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 down time, periodically
inspect the reclaimer wear plate, flex hoses, blast hose,
and nozzle for wear.
When using aggressive media only occasionally, install an
optional aluminum oxide kit. The kit includes rubber
curtains for the cabinet interior and boron carbide-lined
nozzles. When using aggressive media on a regular basis,
install an aluminum oxide kit and a fully-rubber-lined
reclaimer. NOTE Rubber-lined reclaimers are available as
factory-installed items and can be field installed on
reclaimers if they have removable tops (designed to accept
liners). Nozzles lined with boron carbide extend nozzle
wear life. See Optional Accessories in Section 9.1.
1.8.5 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 thorough drying and
breaking up any clumps.
1.8.6 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.
1.8.7 Plastic
Media:
Plastic and similar lightweight
and/or non-aggressive 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.
1.8.8 Bicarbonate of Soda:
Bicarbonate of soda is
not recommended for use in standard cabinets. Bicarb is
a one-use media usually used and 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.
1.9
Compressed Air Requirements
1.9.1
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 cfm consumption for each
gun. When operating with both guns the cfm
consumption is double from that shown. 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.
Compressed-Air Consumption in CFM
BNP Gun
Jet
Nozzle
**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 1.8.
** When operating with both guns cfm consumption is
doubled.
Figure
4
