Use and Care Manual

Page 9
OPERATING INSTRUCTIONS
1. PREPARING PARTS FOR BLASTING
All parts processed must be free of oil, grease and moisture. Make sure parts are dry before putting
into the cabinet for cleaning.
2. AIR PRESSURE
Operating pressure: from 80 to 110 PSI (pounds per square inch) higher pressure, up to 110 PSI
can be used, but this breaks down some types of media prematurely.
- Set air pressure to 80 PSI. Most parts for blast cleaning can be blasted at 80 PSI, for light
gauge steel, aluminum, and other more delicate parts, start at lower pressure and gradually
increase the pressure until the desired finish is achieved.
WARNING:
Do not connect to high pressure bottle gas; rupture and explosion can occur.
3. GUN ANGLE AND DISTANCE
Direct the blast gun at parts at 45-60 degree angle with ricochet towards the back of the cabinet. Do
not hold gun at 90 degree angle to parts being processed. This will cause the media blast to bounce
back into the blast stream and slow blasting action. Also 90 degree angle will cause excessive wear
on gun and viewing window. Hold gun approximately 6 inches form parts being blasted.
WARNING:
Gun must always be pointed away from the operator and towards items being processed. Never
blast with any of the cabinet doors open, while loading and unloading. No one should be at the
operator station, at the front of the blast cabinet.
4. MEDIA
- Media should be of good quality and dry. Moisture will cause the media to not flow and will clog
metering valve and hopper.
5. NOZZLE SIZE
- By changing to the next larger size of nozzle, production can increase significantly. Larger size
nozzles produce a large cleaning pattern. This, however, requires more air (your compressor
must be able to provide this)
MAINTENANCE INSTRUCTIONS
1. BLASTING GUN
- After 10-12 hours of blasting time, the nozzle should be checked. If it shows uneven wear it
should be turned 1/4 turn every 10 hours of use.
2. CAKING OF MEDIA
- Media caking is caused by moisture in the air supply from oily and greasy parts. If this is not
corrected media will not flow evenly and will plug up in the metering valve and the gun. Check
air supply; if water is present install a good moisture trap. If oily or greasy parts are being