Initial Setup; Operation - Clemco 1028 Manual

1.4 Abrasive
WARNING
Obtain a material safety data sheet (MSDS) for
the blast abrasive. Abrasive blasting with sands
containing crystalline (free) silica can lead to
serious or fatal respiratory disease. As OSHA
recommends, do not use abrasives containing
more than trace amounts (more than one
percent) free silica.
1.4.1 Selection of blasting abrasive can play a
significant part in the health risk, productivity, and
maintenance of the blast machine. DO NOT USE
abrasives containing more than one percent crystalline
(free) silica. Obtain material safety data sheets (MSDS)
for the blasting abrasive prior to blasting, paying
particular attention the health risks and presence of any
hazardous/toxic substances.
specifically manufactured for blast cleaning, and that
are compatible with the surface being blasted. Abrasive
produced for other applications may be inconsistent in
size and shape, and contain particles that could jam the
abrasive metering valve, or cause irregular wear.
1.4.2 Abrasive Size: The choice of abrasive size
depends on the desired profile, cleaning rate, nozzle size
and availability of clean dry air. Generally, larger and
denser abrasive provide a deeper profile, while smaller
abrasives clean faster. Most abrasive blasting is done
with abrasive between 20 and 80 mesh. Larger sizes may
be used if the nozzle orifice is large enough to prevent
particles to pass without jamming. Finer abrasive is
especially sensitive to moisture and requires very dry air
to prevent bridging in the metering valve.
1.4.3 Sand: Sand should never be used because of the
respiratory hazards associated with abrasive containing
free silica.
1.4.4 Slags: Slag abrasives are compatible with the
blast machine and accessories. Obtain a material safety
data sheets (MSDS).
1.4.5 Steel: The abrasive metering valve used with the
0.5 cu. ft. and 1.0 cu ft blast machines are generally not
suitable for use with steel or iron abrasive. Steel may
wedge between the narrow gap between the pop-up valve
and pop-up guide and cause the pop-up valve to stick.
1.4.6 Silicon Carbide,
Garnet: These are the most aggressive, high-volume
abrasives in the blasting industry. Aggressive abrasive
such as these may be used, but the service life will be
reduced on any equipment components which come in
contact with the abrasive. Use a nozzle lined with boron
carbide with these abrasives.
© 2013 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 04124, Rev. K
MODELS 1028 & 1042 BLAST MACHINES
Use only abrasives
Aluminum Oxide, and
1.4.7 Glass Bead: Most beads are treated to ensure
free-flow operation even under moderately high-humidity.
Glass beads subjected to excessive moisture may be
reused after thorough drying and breaking up any lumps.
Clean dry air is a necessity. Minor surging will be noted at
startup when using glass bead.
1.4.8 Lightweight Abrasive: Plastic media and most
agricultural media may be occasionally used in a standard
blast machine. Exclusive use of plastic, and some
lightweight media, requires a blast machine with a 60
conical bottom to maintain continuous media flow.
2.0 INITIAL SET-UP
2.1 Blast Machine Set-Up
2.1.2 Install an air supply hose fitting to the inlet valve
(or filter), that is compatible with the compressed-air
supply hose. See Section 3.2.2.
2.2 Remote Control Set-Up
2.2.1 Refer to the remote control manual for set-up
and operation of the control system.
3.0

OPERATION

3.1 Transporting and moving
3.1.1 Transporting a blast machine
WARNING

Always empty the blast machine before
lifting or hoisting.

Never hoist the machine by the handle or
piping, or with a sling through the handle or
piping.

When transporting a machine on a pallet,
always securely attach the machine to a sturdy
pallet.

Always securely anchor the machine to the
transport vehicle.

Failure to observe these warnings could
result in serious injury or death.
3.1.1.1 Always empty the machine before transporting.
Transporting a machine containing abrasive may
increase the weight to an unsafe handling limit, and
could cause abrasive to settle in the piping.
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