GLASCRAFT Spartan 3 Operation Manual Download

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GC-1368N

Before performing any maintenance on this system -

Follow pressure relief procedures on page 8.

Due to the different O-Ring materials and lubricants

used in the Dispense Guns never submerge or soak any

dispense gun in any type of solvent!

Submerging or soaking any Dispense Gun will immedi-

ately void the Gun warranty.

Maintenance

It is recommended that the following service be

performed on a weekly basis.

Inspect and lubricate Catalyst Slave Pump Linkage.

(See Catalyst Slave Pump User Manual.)

Inspect Pump Shafts on Material and Catalyst

Pumps, making certain they are clean and free of

foreign material. Clean and lubricate as required.

For long term storage of your injection system, it is

recommended that the following procedures be

followed:

Place dry nitrogen in the material drums and

secure drum.

Make certain all air and material valves are in their

“OFF” position.

GlasCraft recommends that you contact your gel-

coat and/or resin supplier concerning material

pot-life during extended periods of shut-down. The

decision as to whether or not to leave material in

your system should be based on information from

your material suppliers as well as GlasCraft.

Consult your local authorized GlasCraft distributor for

more information concerning system storage.

Troubleshooting

Before altering catalyst percentage by moving the

catalyst pump to a new desired location on the ratio

arm ALWAYS ensure that the catalyst recirculation

valve is turned to the recirculation position, and the

air pressure is removed from the system.

It is absolutely essential that both streams of material

are pumped to the head without air or gas entrapped.

For example, if air is drawn into the resin stream through

the resin pump inlet system, i.e., via bad connection or

filter end coming out of resin surface, then this air if

not purged out of the machine by recirculating on by-

pass will naturally go to the head through the mixer and

into the RTM mold. This fault condition will manifest

itself in the molded part having very small bubbles;

almost in a froth like state, on the upper side of the

molded part once the mold is opened. The reason for

these bubbles being so small is due to the fact that air

coming through the mixer with the resin is mixed and

frothed before finally entering the mold.

Air or gas in the catalyst stream, leads to a different

type of fault in the molded part. This condition will be

manifest by observing when opening the mold after

injection and supposed cure, that there are wet patches

of uncured or semi-gelled resin in the molded part. The

causes attributed to this are:

Air is drawn in by the catalyst pump through a bad

connection on the inlet stream from the catalyst

container or pump inlet connection.

Catalyst contamination in the pump system causing

oxidation resulting in peroxide gas bubbles being

generated within the supposedly hydraulic sealed

system of the catalyst.

The catalyst pump has faulty seals or is

contaminated with particles.

To ensure that the catalyst system is totally hydraulically

tight, it is expedient after a period of shut-down that the pro-

cedures in the instructions for commissioning the catalyst

stream should be repeated.

Maintenance

Isocyanate Conditions

Rev. G 6/17/2008

Isocyanate Conditions

Material Self-ignition

Moisture Sensitivity of
Isocyanites

Isocyanites (ISO) are catalysts used in two component
foam and polyurea coatings. ISO will react with moisture
(such as humidity) to form small, hard, abrasive crystals,
which become suspended in the fluid. Eventually a film
will form on the surface and the ISO will begin to gel,
increasing in viscosity. If used, this partially cured ISO
will reduce performance and the life of all wetted parts.

To prevent exposing ISO to moisture:

•

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 lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL), Part 206995.
The lubricant creates a barrier between the ISO and
the atmosphere.

•

Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.

•

Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.

•

Never use solvent on one side if it has been contam-
inated from the other side.

•

Always lubricate threaded parts with ISO pump oil
or grease when reassembling.

Keep Components A and
B Separate

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.

Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized partic-
ulates.

Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
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
available, a supplied-air respirator is required for
everyone in the work area.

To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.

Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.

The amount of film formation and rate of crystalli-
zation varies depending on the blend of ISO, the
humidity, and the temperature.

NOTICE

To prevent cross-contamination of the equipment’s
wetted parts,

never

interchange component A (isocy-

anate) and component B (resin) parts.