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9.1 Possible symptoms of faults - Causes of faults - Remedies to apply
Defaults Root causes Remedies
• Paint no longer comes out of
the gun
• Nozzle partially or completely
clogged
• Disassemble and clean the
nozzle with solvent and a
smooth brush
• Check the condition of the
• The spray narrows at pump
reversals.
• The head frequently gets dirty
• The paint comes out through
the air holes in the head.
• Insufficiently tight nozzle
• Product leakage at the trim
level
• Tighten the liner press
without blocking the
needle.
• If the leak is still present,
replace the seal and
• Product leakage at the front of
the gun, trigger released
• Impurities in the product
• Worn out needle or/and worn
out nozzle
• Pull the trigger 3 or 4
times and let it go back on
its own.
• Replace the needle and/or
• Air leakage at the valve
• Permanent air leakage at the
gun head when trigger is
released
• Worn valve
check that the needle
slides freely.
•