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Troubleshooting Chart
Sputtering – particle
Hose connector hole is covered
Uncover hose connector hole
clogging
Sputtering – vacuum leak
1. Loose material hose
1. Tighten material hose
2. Damaged o-ring
2. Replace o-ring
Sputtering – air/abrasive
1. Loose nozzle or jet
1. Tighten nozzle or jet
leaks at nozzle/jet area
2. Damaged o-ring
2. Replace o-ring
Sputtering – low vacuum
1. Worn jet and/or nozzle
2. Abrasive buildup around
jet/nozzle
Gun will not shut off – trig-
Damaged o-rings
Remove and replace o-rings
ger stuck
Clogged gun
1. Damp or heavy material
2. Water in air supply
Material not blasting from
Clogged material hose
gun
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
1. Replace with dry abrasive.(Damp
material can be dried and reused).
2. Drain air tank and install air filter.
See "Moisture in Compressed Air"
box
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
1. Replace jet and/or nozzle
2. Remove nozzle and jet and clean.
Make sure the threads are clean
before replacing
Low or no air pressure
1. Regulator set incorrectly
2. Pinched hose
3. Dirty compressor filter
1. Reset regulator
2. Straighten hose
3. Clean or replace filter
IN241900AV
MODELS AT125102AJ, AT121002AJ AND AT121102AJ