| Air Handlers
The remediation of an Air Handler begins with the initial
inspection.
- A complete inspection should be carried
out to determine the extent of damage to the spray pans,
drip pans, fans, sound insulation, flooring, walls.
- All surfaces
MUST be clean, dry, sound, free of dirt, oil and any other
contaminants which would impede bonding of the coatings
directly to the existing substrate.
- The Tri-Tec Representative
in your area will assist in providing information on approved
methods of proper surface preparation.
Next comes the Rust Conversion.
- Following approved substrate preparation,
one coat of RustGard shall be applied to all surfaces at
a rate of 2 mm. D.F.T. Allow sufficient curing time before
applying the protective top coat(s). The ultimate curing
conditions: Temperature 20 degrees C and relative humidity
of 50% or lower.
- It is recommended that rubber gloves be
worn and that the product NOT be transferred to a metal
container.
- RustGard can be applied by either spray,
brush or roller to achieve the recommended D.F.T. or 2 mls.
When spraying, a single nozzle airless gun is all that is
required. Maximum operating pressure should be 2400 psi.
Then the Finish Coats
- Overcoat total area with one coat of
986-8 Grey Submersible Primer-Finish and allow it to become
dry to the touch before applying the second coat, for a total
D.F.T. of 5 mls. minimum. Sufficient cure time should be
allowed and no water should be run through the units for
this period of time. However, air may be run through the
units immediately upon completion of the work. The finish
coats may be applied by spray, brush or roller.
For ease of application, both RustGard and 986-8 Submersible
Primer-Finish coats should be stored at room temperature prior
to application.
Now the Spray and Drip Pans
All rusted areas, including pin-holing should respond to a
maximum of two coats of RustGard. The second coat to be applied
when the first coat is dry to the touch. After sufficient
curing time, the two top coats of 986-8 Submersible Primer-Finish
should be applied.
Finally, the Floors
Some air-handling units have concrete floors within the units.
The floor next to the spray pan in particular, should be
free of cracks. If the floor requires repair, the following
procedures should be followed.
- 1. All surfaces should be clean, dry and
free of dirt, oil and other contaminants which would affect
the bonding of the coatings.
- Chip out any cracking and
fill with an appropriate joint-filling compound.
- Into
a coat of 986-8 Submersible Primer-Finish, embed a four-inch
mesh between the wall and the floor and apply second
coat.
- Overcoat the entire area with 2 coats of
986-8 Grey Submersible Primer-Finish coating to a minimum
D.F.T. of 5 mm.
Galvanized floors are to be treated with RustGard and 986-8
Submersible Finish Coats as above.
NOTE:It is recommended that the above work be performed in
the off hours, and preferably on a weekend, starting on Friday
evening at 5:00 pm to Sunday evening.
UNIVERSITY
OF OTTAWA
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HEALTH CANADA
Brooke-Claxton Building
Tunney's Pasture
Ottawa
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TRILLIUM HEALTH CARE - MISSISSAUGA,
ONT
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ALL PRODUCTS ARE ODOURLESS AND LOW-V.O.C.
OUR GREEN PAINTS COME IN ALL COLOURS
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