16E / 16E-H / 16E-P Spray Gun
39
MAN 96150 EN 01
5.3 Flashback / Backfire
Symptom:
Gun will appear to go out or fail to light with a “pop” and will burn back
in the siphon plug.
Possible Causes:
• Leak at the wire nozzle o-rings (see “Nozzles” on page 41)
• Worn nozzle
• Dirt in the nozzle jets
• Oversized or ragged jets
• Plugged siphon plug bleeder holes (see “Siphon Plug” on page 41)
• Leak at the siphon plug o-rings
• Use of wrong air cap or clogged/loaded air cap
Corrective Measures:
• Excessive backfire makes it necessary to clean the siphon plug
and nozzles. It may also cause the nozzle nut to loosen.
• Replace damaged components.
5.4 Sticking Wire
Symptom:
Feeding stops
Possible Causes:
• Loading of soft wire
• Kinked or bent wire
• Metal shavings in the nozzle
Corrective Measures:
• Select non-loading hardware. See “Hardware Selection” on
page 26.
• If the wire melts into the end of the nozzle, it can usually be
removed by twisting and forcing the wire through from the back
with pliers.
• To reduce sticking due to kinks or bends, especially with hard wire,
place the wire control unit so that the wire feeds straight to the gun.
Do not overtighten the brake on the wire control unit.
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