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Operating Instructions
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Troubleshooting Chart
Symptom Possible Cause(s) Corrective Action
Low or no air pressure 1. Regulator set incorrectly 1. Reset regulator
2. Pinched hose 2. Straighten hose
3. Dirty compressor filter 3. Clean or replace filter
Material not blasting from
gun
1. Clogged material hose 1. Lower the pressure below 40 psi. Firmly
hold the gun tip flat against the ground
and pull the trigger to force the material
back out of the material hose
2. Buildup around jet 2. Remove nozzle and clean around jet
3. Damp or heavy material 3. Replace with dry abrasive. (Damp material
can be dried and reused)
4. Water in air supply 4. Drain air tank and install air filter, See
“Moisture in Compressed Air” box
Gun will not shut off - trigger
stuck
Damaged o-rings in air valve Remove and replace o-rings
Sputtering - low vacuum 1. Worn jet and/or nozzle 1. Replace jet and/or nozzle
2. Abrasive buildup around jet/nozzle 2. Remove nozzle and jet and clean. Make
sure the threads are clean before re-
assembling
Sputtering - air/abrasive leaks
at nozzle/jet area
1. Loose nozzle or jet 1. Tighten nozzle or jet
2. Damaged o-ring 2. Replace o-ring
Sputtering - vacuum leak 1. Loose material hose 1. Tighten material hose
2. Damaged o-ring 2. Replace o-ring
Sputtering - particle clogging Hose connector hole is covered Uncover hose connector hole