Blastrac 1-8DECMKI, Operating Manual

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Operating Instructions 1-8DEC 230V
Equipment Calibration
7.1 Equipment Calibration
The following list of recommended set-up adjustments and reference values should be
used to help obtain the optimal performance from your blast cleaning system. These
should be used as starting points and can be fine-tuned after trial and observation.
CAUTION : CALIBRATION OF ITEMS 1, 2, 6 AND 7 MUST BE MADE WITH
ALL ELECTRICAL DISCONNECTS IN THE “OFF” POSITION. ALL MOVING
PARTS MUST BE COMPLETELY STOPPED BEFORE MAKING ANY
ADJUSTMENTS OR PERFORMING MAINTENANCE.
1. Blast Housing Height - The bottom of the blast housing (magnets) should be
between 1/8” to 1/2” above the surface being cleaned. A smaller clearance
can be obtained for smooth surfaces and the height may need to be higher
for rough surfaces.
2. Control Cage Setting -
See Section 5, “Setting the Correct Blast Pattern”,
figures A, B and C.
3. Abrasive Selection Recommendations (Steel Shot Size)
Brush blast of smooth concrete: S-170 to S-280 (smaller size will
produce a brighter etch)
Rough concrete etch for coatings: S-330 to S-460
Heavy concrete removal: S-460
Cleaning scale or paint on steel: S-460
4. Exhaust Hose Length - 25 feet of 2-1/4-inch diameter exhaust hose; longer or
shorter sections of hose may affect abrasive consumption or abrasive
cleaning. Contact your Blastrac representative before changing the exhaust
hose length.
5. Dust Collector
– Inspect Dust Collector at 15-minute intervals to see how
quickly the dustbin is being filled. Do not allow dustbin to overfill. Once fill
time is determined, dump the dust at the corresponding time interval.
6. Handle Height
– The handle height can be adjusted to match the individual
operator’s height. This is accomplished by loosening the handle release
levers and then moving the handle to the desired position. Secure the handle
release levers when finished.
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