| Aeration/Blistering |
 |
Overspray |
|
| Bubbling |
|
Patchy Stain |
|
| Blushing/Blooming/Chilling |
|
Pin Holes |
|
| Crazing/Cracking/Checking |
|
Poor Adhesion |
|
| Fish Eyes/Cissing |
|
Poor Physical Resistance |
|
| Graininess/Sinking |
|
Printing |
|
| Lifting of Acid Cat lacquers |
|
Sagging/Runs |
|
| Orange Peel |
|
Stearate Bloom |
|
DISCLAIMER
Due to the fact that Syntema are unable
to be on-site to rectify the problem in
person, the information provided should
be used as a guide only. The information
given in this section therefore is given
in good faith and without warranty.
If you still encounter problems after
referring to this trouble shooting guide
please contact your local Syntema
branch who will be able to offer more
advice or send a technician to site. |
|
| Aeration/Blistering |
| Cause |
Solvents trapped in
Film |
| Correction |
Reduce coating weight
Only use recommended thinners
If force drying, avoid too high temperature
|
| |
|
| Cause |
Conditions high in humidity or
too low in temperature |
| Correction |
Control shop temperature to 18 degree
Centigrade
Use retarder thinners where recommended
|
| |
|
| Cause |
Using un-recommended finishing
systems |
| Correction |
Use finishing systems recommended by Becker-Acroma
only |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
| |
|
| Bubbling |
| Cause |
Lacquer and substrate
sprayed are too hot |
| Correction |
Reduce temperature of substrate
Spray lighter coats
Thin lacquer
Use less air and fluid pressure |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Blushing//Blooming/Chilling |
| Cause |
Moisture trapped in
surface film |
| Correction |
Seal off drafts into spraying/drying area
Add recommended amount of anti-chill, retarder
thinners
Reduce air-pressure |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Crazing/Cracking/Checking |
| Cause |
Incorrect thinners |
| Correction |
Ensure only Becker-Acroma recommended
thinners are being used |
| |
|
| Cause |
Coats of lacquer being too quick
in succession |
| Correction |
Allow recommended drying times between
coats to ensure adequate time for solvent
evaporation |
| |
|
| Cause |
Fast dry materials applied over
slow drying materials |
| Correction |
Stick to Becker-Acroma recommended systems
only |
| |
|
| Cause |
Hard lacquers applied over soft
lacquers |
| Correction |
Fast dry materials applied over slow drying
materials |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Fish
Eyes/Cissing |
| Cause |
Silicone or wax contamination
prior to lacquering |
| Correction |
Remove all sources of potential silicone
especially aerosol cans
Ensure surfaces all free of contamination
prior to finishing
Ensure paint stripper has been neutralised
prior to finishing |
| |
|
| Cause |
Oil or moisture contamination
from air line |
| Correction |
See below: |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Graininess/Sinking |
| Cause |
Insufficient drying
per coat of lacquer |
| Correction |
Allow recommended drying times per coat |
| |
|
| Cause |
Trying to fill grain with coats
of lacquer |
| Correction |
Use Becker-Acroma range of nitrofillers
prior to lacquer coats |
| |
|
| Cause |
Using low solids lacquers |
| Correction |
Stick to Becker-Acroma recommended systems
only |
| |
|
| Cause |
Fast dry materials applied over
slow drying materials |
| Correction |
Contact Syntema who will be able to recommended
a higher build lacquer system |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Lifting
of A/C Lacquers |
| Cause |
Incorrect thinners
or catalyst used |
| Correction |
Refer to relevant data sheet for correct
thinners/catalyst |
| |
|
| Cause |
Incorrect catalyst ratio used |
| Correction |
Refer to relevant data sheet or label
on the can for correct ratio |
| |
|
| Cause |
Insufficient drying times between
coats |
| Correction |
Refer to relevant data sheet for correct
drying times |
| |
|
| Cause |
Incorrect stain added to the A/C
lacquer |
| Correction |
Use only solvent stains recommended by
Syntema. Contact your local Syntema
branch if unsure |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Orange
Peel |
| Cause |
Material is too thick
to atomise |
| Correction |
Thin with the recommended thinners |
| |
|
| Cause |
Solvents are evaporating too fast |
| Correction |
Retard lacquer in accordance with Becker-Acroma
instructions |
| |
|
| Cause |
Incorrect air/fluid pressure |
| Correction |
Set correct pressures for both air and
fluid |
| |
|
| Cause |
Incorrect spraying technique |
| Correction |
Gun to surface should be 7-8 inches no
more or less |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Overspray |
| Cause |
Too much air pressure
|
| Correction |
Use correct pressure for the material
being sprayed |
| |
|
| Cause |
Spray gun not held close enough
to substrate |
| Correction |
Gun to surface should be 7-8 inches no
more or less) |
| |
|
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Overspray |
| Cause |
Poor sanding of substrate |
| Correction |
Ensure 180 grit paper is used prior to
finishing |
| |
|
| Cause |
Stain is applied too dry |
| Correction |
Apply a wet coat evenly |
| |
|
| Cause |
Stain is biting into sawn edges
or cut MDF board |
| Correction |
Use appropriate MDF sealer |
| |
|
| Cause |
Uneven stain penetration |
| Correction |
Ensure substrate is thoroughly wetted
before wiping off |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Pin
Holes |
| Cause |
Material is drying
too fast |
| Correction |
Retard lacquer in accordance with Becker-Acroma
instructions |
| |
|
| Cause |
First coat of material is being
applied too dry |
| Correction |
Ensure a good wet first coat is applied |
| |
|
| Cause |
Hurried spraying |
| Correction |
Ensure each coat is overlapped by 50%
and ensure a correct loading of 80gsm is
being applied |
| |
|
| Cause |
Coats of material are being applied
too heavy |
| Correction |
Sand between coats- do not coat wet on
wet
Apply coats of 70gsm in hot weather |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Poor
Adhesion |
| Cause |
Dry spray |
| Correction |
Ensure a good wet coat is applied |
| |
|
| Cause |
Contaminated Surface prior to
finishing |
| Correction |
Ensure surface is sanded with 180 grit
paper and free from all contaminants |
| |
|
| Cause |
Spray gun held too far away from
surface |
| Correction |
Hold spray gun 7-8 inches from substrate |
| |
|
| Cause |
Too much atomising air or too
material leaving the spray gun |
| Correction |
Use correct pressures |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Poor
Physical Resistance |
| Cause |
Incorrect amount of
acid or reactor added |
| Correction |
Refer to data sheet for correct ratio |
| |
|
| Cause |
Lacquer not left long enough before
being put to use |
| Correction |
Allow 28 days for product to fully cure
before being put to use |
| |
|
| Cause |
Incorrect system being used |
| Correction |
Only use Becker-Acroma recommended systems |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Printing |
| Cause |
Substrate being packed
too quickly after spraying |
| Correction |
Leave at least 24 hours before packing |
| |
|
| Cause |
Incorrect thinner being used |
| Correction |
Use Becker-Acroma recommended thinner |
| |
|
| Cause |
Material is being re-coated too
quickly |
| Correction |
Refer to relevant data sheet for recommended
drying times between coats |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Sagging
Runs |
| Cause |
Material is over thinned |
| Correction |
Start with 5% recommended thinners and
work upwards until material has achieved
good atomisation |
| |
|
| Cause |
Mismatched thinners |
| Correction |
Only use Becker-Acroma recommended thinners |
| |
|
| Cause |
Too much material being applied |
| Correction |
Stick to normal coats and allow to dry
properly |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
| Stearate
Bloom |
| Cause |
Acid in pre cat lacquers
attacking sanding agents in sanding sealers |
| Correction |
Only use Becker-Acroma recommended basecoats/sealers |
| |
The above
information assumes the following:-
A Properly matched spray gun fluid tip,
needle and air cap
B Compressor in good working order and drained
regularly
C Moisture and oil trap installed in the
air line no more than 3 -4 metres from the
gun |
|
|
