SPEC MIX G7000 SILO Manual De Seguridad página 10

OPERATING SPEC MIX SILOS
®
WARNING: Injurious to eyes, lungs & skin SPEC
MIX products contain portland cement and lime,
masonry cement, mortar cement, additives, sand
and/or color pigment.
Avoid eye contact, prolonged breathing of dust or
contact with skin
Recommended wearing of NIOSH approved
dust mask or respirator that meets minimum
performance of N-95, appropriate eye protection,
gloves and the proper clothing to protect from
prolonged exposure.
Wash hands thoroughly after handling. In case of
eye contact, immediately flush with plenty of water
for at least 15 minutes and consult a physician.
1. Position the silo so the mason tender can be
positioned with a crosswind over the mixer or
downwind to keep dust from blowing into the face
of the worker while mixing. Many SPEC MIX silos
are equipped with a rotating gate that allow for
the handle to be moved without moving the silo
itself. To keep rotating gates working properly, keep
grease in zerts and make sure to open the gate
before attempting to rotate it to remove downward
force from the weight of the material on the gate
when rotating.
2. Position mixer under silo to facilitate dumping of
mixed product into mud box or tub.
3. Place discharge chute as close as possible to mixer
protective grate or orifice.
4. Start the mechanical mixer.
5. Fill the mixer with sufficient water to receive
the material. It is beneficial to keep the initial
batch wetter than required for final use to ensure
complete hydration of the aggregate, reducing dust
when charging the mixer and increasing board life
of the final product.
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OPERATING SPEC MIX SILOS
®
6. Next, locate the handle that controls the flow of
SPEC MIX preblended material into the mixer. This
handle extends down and away from the silo just
above the chute. Pull the handle away from the
mixer to open and push to close.
7. When opening the gate, take a stance that is away
from the discharge of material to limit exposure to
nuisance dust.
8. Open the gate with even force and only as wide as
needed to allow for a good steady flow of material
into the silo. Opening at too great of a distance can
cause product surges that have the potential to
increase nuisance dust on site.
9. When the desired amount of material has been
dispensed into the mixer, shut the gate with even
force, maintaining distance from the mixer.
10. Adjust mix as needed by adding either more water
or SPEC MIX product in order to obtain the desired
consistency.
11. As the wind shifts, make sure to position with
a cross wind or downwind to continue to avoid
nuisance dust.
12. Mix each batch to the full five minutes as required
by ASTM.
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