PULSAR
®
PLUS 55-S SUCTION BLAST CABINET
Page 7
© 2021 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 30423
1.8
Nozzle Options
1.8.1
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 in
Section
10.1: Optional Accessories
and in Section 10.8 BNP
Gun and Feed Assembly.
Use boron carbide nozzles
when blasting with aggressive media, as noted in
Section 1.10.4.
1.9
HEPA (high-efficiency particulate air)
Filter
1.9.1
An optional HEPA afterfilter provides additional
filtration, trapping 99.97% of dust down to 0.3 micron
particles. A HEPA filter must be used when removing
toxic coatings, heavy metals, or any other toxic
materials. HEPA filter is listed in
Section 10.1: Optional
Accessories
.
All dust is hazardous to breath.
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 breath.
1.10
Blasting Media
1.10.1
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 plug the nozzle or 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
attention to worker health risks and the presence of any
hazardous/toxic substances.
Most common reusable media specifically manufactured
for blasting can be used in Pulsar
®
Plus Cabinets. The
media sizes shown in this section are provided as a
guideline only. The guideline is based on 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.
1.10.2 Steel shot and steel grit
: Steel grit or steel shot
cannot be used with a Pulsar Plus 55-S cabinet. Steel
media is too heavy to use with cabinets equipped with a
300 cfm reclaimer.
1.10.3 Sand and slag:
Sand and slag media are not
suitable for cabinet use. Sand should NEVER be used
for abrasive blasting because of the respiratory hazards
associated with media containing free silica. Slags are
not recommended for cabinet use because they rapidly
break down and are not recyclable.
1.10.4 Silicon carbide, aluminum oxide, and garnet:
These are the most aggressive of the commonly used
media.
Aggressive media between 54 to 180-Mesh 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, install an optional
aluminum oxide kit, which includes rubber curtains for
the cabinet interior and a boron carbide-lined nozzle.
Nozzles lined with boron carbide extend nozzle wear life.
Refer to Section 10.8
BNP Gun and Feed Assembly.
1.10.5 Glass bead:
No. 6 to No. 12 glass beads is
recommended for the Pulsar
®
Plus
55. 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 any clumps.
