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16. PROBLEMS CAUSES AND REMEDIES
PROBLEM
WHERE IT OCCURRED
Each joint connection
Air leaks
Air cap
Each joint connection
Fluid nozzle
Fluid leaks
Air cap set holes
Fluid needle packing
set
Fluid supply route
Small or no
fluid output
Tip of gun
Paint resi-
due buildup
Air cap set
on air cap
set
Same as above
Incomplete
pattern
Atomizing air route
14
WHERE TO CHECK
CAUSE
Weak tightening
All joints, connections
Damaged
Dirty
Damaged
Gun Body
Dirty
Air valve
Worn
Air valve spring
Weak spring
Weak tightening
All joints, connections
Damage on seat
Dirty
Weak tightening
Fluid Nozzle
Nozzle Holder
Damaged
Needle spring
Weak spring
Damaged
Air cap set
Dirty
Weak tightening
Fluid needle packing
Worn
Fluid needle
Worn
Fluid needle packing
Weak tightening
Fluid pressure
Pressure too low
Filter set
Clogged
Filter hose
Clogged
Fluid nozzle
Clogged
Safety lock
Locked
Paint viscosity
Viscosity too high
Clogged
Air cap holes
Deformed or damaged
Paint build-up
Deformed or damaged
Air cap, fluid nozzle
passages
Clogged
Fluid nozzle
Worn or damaged
Same as above
Same as above
Too low (tails occur)
Atomizing air
Too high (heavy at
pressure
both ends of spray
pattern)
TIGHTEN
ADJUST
CLEAN
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REPLACE
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