For All Applications Except Spray Foam; Material Self-Ignition; Keep Components A And B Separate; Moisture Sensitivity Of Isocyanates - Graco GX-7A Operation, Parts, Service, Repair

Important Two-Component Material Information
For all applications except spray
foam
Spraying or dispensing fluids that contain isocyanates cre-
ates potentially harmful mists, vapors, and atomized partic-
ulates.
• Read and understand the fluid manufacturer's warn-
ings and Safety Data Sheet (SDS) to know specific
hazards and precautions related to isocyanates.
• Use of isocyanates involves potentially hazardous pro-
cedures. Do not spray with this equipment unless you
are trained, qualified, and have read and understood
the information in this manual and in the fluid manufac-
turer's application instructions and SDS.
• Use of incorrectly maintained or mis-adjusted equip-
ment may result in improperly cured material. Equip-
ment must be carefully maintained and adjusted
according to instructions in the manual.
• To prevent inhalation of isocyanate mists, vapors, and
atomized particulates, everyone in the work area must
wear appropriate respiratory protection. Always wear a
properly fitting respirator, which may include a sup-
plied-air respirator. Ventilate the work area according
to instructions in the fluid manufacturer's SDS.
• Avoid all skin contact with isocyanates. Everyone in
the work area must wear chemically impermeable
gloves, protective clothing and foot coverings as rec-
ommended by the fluid manufacturer and local regula-
tory authority. Follow all fluid manufacturer
recommendations, including those regarding handling
of contaminated clothing. After spraying, wash hands
and face before eating or drinking.

Material Self-ignition

Some materials may become self-igniting if applied too
thick. Read material manufacturer's warnings and Safety
Data Sheet (SDS).
6
Keep Components A and B
Separate
Cross-contamination can result in cured material in fluid
lines which could cause serious injury or damage equip-
ment. To prevent cross-contamination:
• Never interchange component A and component B
wetted parts.
• Never use solvent on one side if it has been contami-
nated from the other side.
Moisture Sensitivity of
Isocyanates
Exposure to moisture (such as humidity) will cause ISO to par-
tially cure, forming small, hard, abrasive crystal that become
suspended in the fluid. Eventually a film will form on the sur-
face and the ISO will begin to gel, increasing in viscosity.
NOTICE
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 mois-
ture. Always keep solvent containers closed when not in
use.
• Always lubricate threaded parts with an appropriate
lubricant when reassembling.
NOTE: The amount of film formation and rate of crystallization
varies depending on the blend of ISO, the humidity, and the
temperature.
311321N