Maintenance - Graco GC-1402 User Manual

Maintenance

Parts Replacement Procedure
Formula X Chop Gun
Before performing maintenance on the dispense gun,
follow Pressure Relief Procedure.
Due to the different o-ring materials and lubricants used
in the dispense guns, never submerge or soak any dis-
pense gun in any type of solvent. Submerging or soak-
ing any dispense gun will immediately void the gun war-
ranty.
1. Read each procedure entirely before beginning
and refer to the illustration views as needed.
2. Flush and clean all passages as they become
accessible.
3. Clean all parts before assembly.
4. Replace all O-Rings, Valves and Seals with new
parts from the appropriate kit.
5. Inspect all parts for wear or damage and replace
as required with new GENUINE GlasCraft
REPLACEMENT PARTS from your authorized
GlasCraft Distributor.
6. Inspect all threads for wear or damage and
replace as required.
7. Tighten all threaded parts securely, but not
excessively, upon assembly.
8. O-rings can fail if subjected to any of the
following conditions.
a. Swelling - coming in contact with
solvent or oil from compressor.
b. Cut - sharp, unlubricated edge in gun
head or handle.
c. Sticky - contaminated with oil, water,
solvent, catalyst, resin or gel-coat.
d. Chaffing - dry sliding surfaces (needs
lubrication).
GC-1402E
Notice
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
Spraying materials containing isocyanates creates
available, a supplied-air respirator is required for
potentially harmful mists, vapors, and atomized partic-
9. Lightly lubricate all O-Rings with petroleum jelly.
everyone in the work area.
ulates.
10. Check all springs for resilience. They should
To prevent contact with isocyanates, appropriate per-
Read material manufacturer's warnings and material
return quickly to their original (new) length.
sonal protective equipment, including chemically
MSDS to know specific hazards and precautions
impermeable gloves, boots, aprons, and goggles, is
related to isocyanates.
11. Clean the exterior of the Gun and Hoses with
also required for everyone in the work area.
an appropriate, clean solvent and cloth or brush.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
Material Self-ignition
Hose Removal
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
1. Releive pressure (See page 19).
To prevent contact with isocyanates, appropriate per-
2. Remove resin Hose with an 11/16" wrench.
sonal protective equipment, including chemically
Some materials may become self-igniting if applied
(Hold delivery tube with an 11/16" wrench.)
impermeable gloves, boots, aprons, and goggles, is
too thickly. Read material manufacturer's warnings
also required for everyone in the work area.
and material MSDS.
3. Remove catalyst Hose with a 9/16" wrench.
(Hold delivery tube with a 9/16" wrench.)
Material Self-ignition
Moisture Sensitivity of
4. Remove solvent hose with a 5/8" wrench.
(Hold delivery tube with a 9/16" wrench)
Isocyanites
5. Remove all tubing lines by pushing in on
Isocyanites (ISO) are catalysts used in two component
the fitting and pulling the tubing out.
foam and polyurea coatings. ISO will react with moisture
Some materials may become self-igniting if applied
(such as humidity) to form small, hard, abrasive crystals,
6. Remove the chopper air hose with a 11/16"
too thickly. Read material manufacturer's warnings
which become suspended in the fluid. Eventually a film
wrench. (Hold the air hose inlet fitting with
and material MSDS.
will form on the surface and the ISO will begin to gel,
a 9/16" wrench)
increasing in viscosity. If used, this partially cured ISO
will reduce performance and the life of all wetted parts.
Moisture Sensitivity of
The amount of film formation and rate of crystalli-
Tape a clean polyethylene bag over the end of each
Isocyanites
zation varies depending on the blend of ISO, the
Hose to prevent spillage and to keep clean.
humidity, and the temperature.
Isocyanites (ISO) are catalysts used in two component
Gun Service
To prevent exposing ISO to moisture:
foam and polyurea coatings. ISO will react with moisture
(such as humidity) to form small, hard, abrasive crystals,
Dispense Gun Component Service
which become suspended in the fluid. Eventually a film
will form on the surface and the ISO will begin to gel,
and Assembly Procedures
increasing in viscosity. If used, this partially cured ISO
Rev. G 6/17/2008
will reduce performance and the life of all wetted parts.
The amount of film formation and rate of crystalli-
If Seal, P/N 23763-00 and Packing Disks, P/N 23721-04
zation varies depending on the blend of ISO, the
are removed from the Gun Body GlasCraft recommends
humidity, and the temperature.
that these parts always be replaced with NEW seals and
packing disks.
To prevent exposing ISO to moisture:
Rev. G 6/17/2008
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