Blastrac 1-8DECMKI, Operating Manual

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Operating Instructions 1-8DEC 230V
Troubleshooting
10.2 Continued
Trouble Probable Cause Remedy
Contaminated abrasive -
fines and contaminants
not being removed from
abrasive. Very soft concrete
removal. Excessive dust
quantities entering
system (will cause
excessive component
wear).
Insufficient air flow being
delivered by dust
collector. Increase machine speed to reduce
the amount of concrete removal or
reduce abrasive flow to wheel.
Check filter: Clean or change if
necessary.
Visible dust discharge. Torn, punctured or
improperly installed filter
cartridges.
Improper filter
installation. Check filters. Replace or reinstall.
Refit properly.
10.3 Vacuum Adjustment
For normal concrete surfaces, Blastrac does not recommend using more than the
25 feet of exhaust hose supplied with the blast system.
Adding additional hose
can cause insufficient suction, which will allow unwanted dust and contaminants to
accumulate in the abrasive, thereby causing premature wear to the blast wheel and
liners. Additional hose can only be added when cleaning steel surfaces. Contact your
Blastrac representative for your specific steel cleaning application.
Normal shotblasting with the blast unit will usually be accomplished with the vacuum
adjustment gate partially open. Too much suction will sometimes allow abrasive to be
pulled from the blast unit and deposited into the dustpan. This is particularly true when
using small sizes of abrasive such as S-170 and S-230.
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