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7 Bonding primary Force curing adhesive systems(cont'd.) At temperatures below 40°F(5°C)or if the temperature will not be above 40°F(5°C) during the entire period of cure,an external heat source must be used to force cure the adhesive.The adhesive and the bonding surfaces should be warmed to 50°F(10°C) before mixing and applying the adhesive. Below 40°F(5°C)force cure the adhesive with an external heat source such as: • Ameron LCX heating blanket • Forced air heater if the trench is covered to contain the heat • Hot air gun Using Ameron heating blankets Fitting Ameron heating blankets provide an efficient means for curing adhesive-bonded joints. Ther ostat A size 1 heat blanket is needed for installing Dualoy 3000/LCX systems.It is narrower Blanket than standard heating blankets to allow application in close quarters without allowing the heating blanket to overlap the threaded closure.Overwrapping can result in melted parts if the blanket is improperly applied or the thermostat malfunctions.If overwrapping cannot be avoided,make sure the blanket is properly applied and place a layer of —} insulating material between the blanket and the threaded closure. The heating blanket reaches a maximum temperature of 300°F(150°C),which will cure Ameron adhesive in approximately 30 to 40 minutes.Detailed instructions are included with the blanket.Observe the following points: Fig.7-3.Place the thermostat end of the • Use one heating blanket per bond. blanket against the joint with thermostat 0 Tie the blanket in place with nonconducting ties. facing out.Wrap the rest of the blanket around the joint so that the overlap 0 Before connecting to a power source,inspect the blanket and cord for loose wire covers the thermostat. connections and bare wires. • Do not plug the cord into a power source when standing in water or on a wet r-----------1 surface. 1 Temperatures in a trench or out • � of direct sunlight maybe lower � Check that the heating blanket has the correct AC voltage rating for your locality. Do not use direct current. I than measured ambient surface temperatures. Mark the starting and disconnect time on the pipe with a grease pencil so that you L___________J will have a record of cure for each joint. • Verify that the blanket actually heats up after being plugged in. • Do not move or disturb the joint during cure. Fiberglass insulation backed by aluminum foil4 F Fig.7-4.When it is windy or below 50°F \i (10°C),close the pipe ends and insulate around the blanket.Overlap the blanket about 4 inches on each side and tie down the ends of the insulation. Connecting to non-Ameron fiberglass primary piping Connect Dualoy 3000/LCX fiberglass piping and non-Ameron UL-listed fiberglass primary piping by means of threaded adapters.Do not adhesive bond Ameron piping to that of another manufacturer.Bond the appropriate adapter from each manufacturer to the manufacturer's pipe using that manufacturer's adhesive.Complete the threaded connection using thread sealant,not pipe adhesive.By following this procedure you can use Dualoy 3000/LCX piping to extend an existing line that employs the pipe from another manufacturer without voiding the UL Listing of either system. 4)