86
VERSION 03/2018
ORDER NUMBER DOC 2369735
9.2
FAULTS IN THE SYSTEM
Functional fault
Cause
Remedy
Insufficient product output
– Nozzle too small.
– Flat jet: Select larger nozzle
(see nozzle table).
– Product pressure too low.
– Increase product pressure.
– Product viscosity too high.
– Thin spray product in accordance with
the manufacturer's instructions.
– Filter in paint supply clogged. – Clean or replace filter.
– Nozzle is clogged.
– Clean or replace nozzle.
– Product valve travel set too
small.
– Increase product valve travel by turning
the stop screw.
Poor spray pattern
– Atomizing air incorrectly
adjusted.
– Readjust atomizing air.
– Unfavorable nozzle size.
– Select a different nozzle
(see nozzle table).
– The product viscosity
is too high.
– Thin product in accordance with the
manufacturer's instructions.
– Product pressure
too high/too low.
– Adapt product pressure.
– Damaged nozzle.
– Attach new nozzle.
Poor wrap-around
– Poor grounding at object.
– Check grounding of object or hanger
with ohmmeter.
– Lacquer resistance
too high/too low.
– Check lacquer resistance
(see Chapter
).
– Spraying pressure too high.
– Readjust spraying pressure.
No wrap-around
– No high voltage.
– Switch on high voltage
(external and exit standby mode).
– Connect control cable/check for defects.
– Check lacquer resistance
(see Chapter
).
– Seal in end piece defective.
– Repair by WAGNER Service Department.
– Air-passages damp.
– Clean and dry air passages.
Back-spray
– Object not grounded.
– Check grounding.
– Distance between spray gun
and work piece too large.
– Reduce distance between spray gun
and work piece.
– High voltage set wrongly
(too high).
– Adapt high voltage to product.
– Loosen the nozzle union nut
for round jet method.
– Slightly tighten union nut by hand.
Product emission at nozzle
when the gun is closed
– Valve seat leaks, valve seat or
valve tip worn
– Replace valve seat or valve tip.
Product emission from gun
– Valve rod packing
leaks/damaged
– Replace the packing (see Chapter
).