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VERSION 03/2018
9.2
FAULTS IN THE SYSTEM
Functional fault
Insufficient product output
Poor spray pattern
Poor wrap-around
No wrap-around
Back-spray
Product emission at nozzle
when the gun is closed
Product emission from gun
ORDER NUMBER DOC 2369735
Cause
– Nozzle too small.
– Product pressure too low.
– Product viscosity too high.
– Filter in paint supply clogged.
– Nozzle is clogged.
– Product valve travel set too
small.
– Atomizing air incorrectly
adjusted.
– Unfavorable nozzle size.
– The product viscosity
is too high.
– Product pressure
too high/too low.
– Damaged nozzle.
– Poor grounding at object.
– Lacquer resistance
too high/too low.
– Spraying pressure too high.
– No high voltage.
– Seal in end piece defective.
– Air-passages damp.
– Object not grounded.
– Distance between spray gun
and work piece too large.
– High voltage set wrongly
(too high).
– Loosen the nozzle union nut
for round jet method.
– Valve seat leaks, valve seat or
valve tip worn
– Valve rod packing
leaks/damaged
Remedy
– Flat jet: Select larger nozzle
(see nozzle table).
– Increase product pressure.
– Thin spray product in accordance with
the manufacturer's instructions.
– Clean or replace filter.
– Clean or replace nozzle.
– Increase product valve travel by turning
the stop screw.
– Readjust atomizing air.
– Select a different nozzle
(see nozzle table).
– Thin product in accordance with the
manufacturer's instructions.
– Adapt product pressure.
– Attach new nozzle.
– Check grounding of object or hanger
with ohmmeter.
– Check lacquer resistance
(see Chapter 2.4).
– Readjust spraying pressure.
– Switch on high voltage
(external and exit standby mode).
– Connect control cable/check for defects.
– Check lacquer resistance
(see Chapter 2.4).
– Repair by WAGNER Service Department.
– Clean and dry air passages.
– Check grounding.
– Reduce distance between spray gun
and work piece.
– Adapt high voltage to product.
– Slightly tighten union nut by hand.
– Replace valve seat or valve tip.
– Replace the packing (see Chapter 10).
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