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Material Self-ignition
Some materials may become self-igniting if applied too
thick. Read material manufacturer's warnings and
Safety Data Sheets (SDSs).
Keep Material Components
Separate
Cross-contamination can result in cured material in
fluid lines which could cause serious injury or damage
equipment. To prevent cross-contamination:
Never interchange the wetted parts of the material
•
components.
•
Never use solvent on one side if it has been con-
taminated from the other side.
Moisture Sensitivity of
Isocyanates
Exposure to moisture (such as humidity) will cause ISO
to partially cure, forming small, hard, abrasive crystal
that become suspended in the fluid. Eventually a film will
form on the surface and the ISO will begin to gel,
increasing in viscosity.
Partially cured ISO will reduce performance and the
life of all wetted parts.
•
Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
•
Keep the ISO pump wet cup or reservoir (if
installed) filled with appropriate lubricant. The
lubricant creates a barrier between the ISO and
the atmosphere.
•
Use only moisture-proof hoses compatible with
ISO.
•
Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
•
Always lubricate threaded parts with an appropri-
ate lubricant when reassembling.
313267W
NOTICE
Important Isocyanate (ISO) Information
NOTE: The amount of film formation and rate of crystal-
lization varies depending on the blend of ISO, the
humidity, and the temperature.
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Changing Materials
Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
•
When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
•
Always clean the fluid inlet strainers after flushing.
•
Check with your material manufacturer for chemi-
cal compatibility.
•
When changing between epoxies and urethanes
or polyureas, disassemble and clean all fluid com-
ponents and change hoses. Epoxies often have
amines on the B (hardener) side. Polyureas often
have amines on the B (resin) side.
NOTICE
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