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• Use a hole saw (4-1/2" diameter for 3" coupling, 5-1/2" <br />diameter for 4" coupling) or jig saw (both provided <br />by contractor) to cut a hole at marked location. <br />❑ Although carbide tipped blade will last longer, any steel <br />saw blade can cut hole. <br />Step #2 - Sand and Clean Mating Surfaces <br />• Use supplied sandpaper (60 grit) to sand an area around <br />drilled hole on both inside and outside of turbine enclosure <br />❑ Turbine enclosure surface must be sanded "white" to <br />ensure proper bond. <br />❑ Sanded area should radiate at least 3" out from hole edges. <br />• Sand FRP fitting flanged surfaces. <br />• Use clean, dry cloth to remove sanding dust from all <br />sanded surfaces. <br />• If surfaces are contaminated with grease or piping dope, <br />use clean solvent to thoroughly clean bonding surfaces, <br />then resand surfaces. <br />Field Installed FRP Coupling _,, Turbine Enclosure Interior <br />Female Section <br />Male Section' <br />0 Sand these surfaces first, then apply adhesive to these surfaces just before <br />final assembly. <br />'Male section to be inserted from the inside of the turbine enclosure. <br />Step #3 - Mix and Apply Adhesive <br />Note: Adhesive shelf life is six months. Check production <br />date on box. <br />• Confirm bonding surfaces of turbine enclosure and FRP <br />coupling are dry, clean, and sanded. <br />• Thoroughly mix two part adhesive in accordance with <br />detailed mixing instructions contained in adhesive kit. <br />• Apply adhesive with supplied putty knife to prepared <br />surfaces on both Fiberglas turbine enclosure and FRP <br />fitting flanges. <br />Step #4 - Attach FRP Coupling <br />• Insert male threaded coupling section from inside of <br />turbine enclosure. <br />• Screw female threaded section from outside of turbine <br />enclosure. <br />• Tighten down both sections by hand tightening until <br />adhesive is squeezed out from flange faces. <br />Note: Hand tighten only. <br />• Use flat stick or putty knife to fill in all gaps around <br />coupling flange and turbine enclosure wall. <br />26 <br />Step #5 - Curing <br />• Allow minimum of four hours for adhesive to harden. <br />❑ Mating parts must not be moved before adhesive <br />is fully cured. <br />• For outside ambient temperatures below 60°F, apply <br />supplemental heat to initiate adhesive curing process. <br />❑ See Adhesive Application Guidelines in section F5. <br />• Test coupling. <br />❑ See section F7, Hydrostatic Water Test for details. <br />❑ After successful test, install secondary piping into FRP <br />coupling. <br />Step #6 - Disposal of Unused Catalyst, Adhesive. <br />• Mix unused tubes of catalyst and any unused catalyst or <br />adhesive to form a solid for safe disposal. <br />• Dispose.of resulting solid as a non -hazardous waste in <br />accordance with federal, state and local regulations. <br />G4. Rubber Grommet Installation <br />Note: Grommets are not intended to be used for primary <br />piping connections to the turbine enclosure. <br />Note: Grommets should not be used in sealable turbine <br />enclosures. <br />When rubber grommets are used: <br />• Electrical fittings and secondary pipe fittings are installed <br />using same procedure. <br />• Grommets are dimensionally compatible with FRP pipe <br />manufactured by either Ameron or Smith Fiberglass. <br />❑ Contractor provides secondary FRP Pipe which is <br />placed in grommet. <br />Optional grommet kit for electrical connections include: <br />• Grommets. <br />• One hole saw with arbor. <br />• Sandpaper. <br />Optional grommet kit for secondary piping fittings include: <br />• 8 grommets. <br />• One hole saw. <br />• Sandpaper. <br />How to Install Grommet <br />Note: To insure a water resistant seal, only use supplied <br />hole saw. <br />Step #1- Drill and Sand Hole <br />• Drill hole. <br />• Ensure hole is clean cut with defined edges. <br />• Use supplied sandpaper to clean edge of cut hole to remove <br />loose fibers or burrs. <br />• Sand smooth any chipping or irregularities. <br />