INSTALL_1999 - Laserfiche WebLink

Home Browse Search

7 Bonding primary Joint preparation systems All tapered systems must be clean,dry and warm for a proper bond. Clean:Pipe is shipped from the factory with end protectors.Avoid contamination from fingerprints,petroleum fumes,mist and condensation as these are adverse to good bonding.If a taper becomes dirty,sand it with emery cloth.Never touch the bonding surface with bare hands after cleaning or sanding as this will leave an oily deposit. r------------1 Dry:Adhesive will not bond to a wet surface.If the taper is wet or moist,dry itwith a The hardener contained in the I blow dryer or heat gun.Do not overheat or burn the pipe. adhesive kit may bum the skin. I Warm:Below 50°F(10°C),warm the taper with a blow dryer or heat gun.For best I Avoid inhaling the vapors.Read and 1 results,adhesive should be at least 50°F when used.Do not store kits in areas above observe the label precautions. I 100°F(38°C),below 32°F(0°C),or in the direct sunlight during warm weather.In cold L-----------_J weather warm the resin to at least 50°F but not above 100°F to permit good mixing and easier application. Mixing Ameron B20 adhesive • Combine all of both components in the mixing container in the supplied proportions. • Never try to split a kit. • Mix thoroughly with the mixing stick until all streaks are gone and the adhesive has a smooth,uniform color.Mixed adhesive color is red. • Do not allow moisture to get into the can. B20 adhesive is also available in a dual cartridge dispenser.The adhesive is dispensed through a static mixer and requires no further mixing before being applied to the bonding surfaces. Begin by coating the cut ends of the pipe with adhesive.Then app" a thin,even coat of mixed adhesive to the inside of the bell and to the tapered spigot ends(indicated by shading)or to the entire tapered section in fittings or adapters,completely wetting all machined surfaces with the adhesive.Wipe off excess adhesive with the spatula provided in the kit. Applying Ameron B20 adhesive Excessive amounts of adhesive may cause flow restriction inside the pipe when the adhesive has cured,or may result in'hydraulic backout'as the adhesive cures. Hydraulic backout occurs when excess adhesive prevents the joint from maintaining an interference fit and the spigot backs out of the bell during cure. Making the joint After aligning the mating surfaces so that they may be brought together in a straight line: • Insert spigot all the way into the bell. • Twist one quarter of a turn when pushing togetherto distribute adhesive evenly and to achieve an interference fit. • Do not cock the joint. • Over-insertion of the joint may collapse the spigot and cause a leaky joint. • Under-insertion of the joint may also cause a leaky joint. • Do not drive the joint together with a hammer. • Do not disturb the joint while the adhesive is uncured. 4 r_____________ • Do not move adjacent pipe and fittings until adhesive has set. Do not use any type of hammer or I pot life/cure times for Ameron B20 adhesive mallet to makeup the joint. L____________J Pot life is measured from the time the hardener and resin are first mixed until the adhesive starts to thicken and harden and no longer can be used.Do not use adhesive once the can has become hot. 9