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• • If you have any questions, please contact your Smith Fiberglass Products' representative. b. Bonding surfaces must be dry, so be sure all solvent has evaporated before applying adhesive. 2. Adhesive mixing—Thoroughly mix the adhesive. Complete information and safety precautions are pack- aged with each adhesive kit. a. When the weather is cool or the ad- hesive has been stored in a cool environment (60°F/16°C or be- low), prewarm the adhesive kits. Do not heat above 80°F (27°C)! See Fig. 1.6.6. In some cases, hard- eners may crystal- lize. If this occurs, refer to the instructions provid- ed in each kit. b. Empty all of the contents of the hardener bottle into the can of base adhesive (see Fig. 1.6.7). C. Mix all of the ad- hesive with all of the hardener. NEVER SPLIT A KIT. Do not spill hardener during the mixing process. Cut through the adhesive with the edge of the mixing stick to assist in mixing the two components. d. Mix until the ad- hesive has a uni- form color and a consistent flow off the mixing stick (see Fig. 1.6.8). Wipe down the sides, bottom, and under the rim of the can with the mixing stick to as- sure complete mixture. 0 3. Adhesive working life—Working life or pot life is the time it takes for the adhesive to harden in the mixing SECTION 6 ♦ Installation can. This time is measured from the time the adhesive and hardener are first mixed. Working life is shorter at temperatures above 707 (21°C) and becomes longer as the temperature drops below 707 (21°C). Working life is affected by the quantity of mixed adhesive as well as by temperature. Use the following methods to in- crease the working life of adhesives: a. Occasionally stir the adhesive mixture during appli- cation. b. Cut the carton in which the adhe- sive kit is fur- nished so that the height of the car- ton is the same as the adhesive can. Line the inside of the box with rags or paper towels, and wet the rags or towels with sol- vent. Nest the can in prepared carton (see Fig. 1.6.9) inate the adhesive with solvent. Do not contam- Caution: If adhesive becomes warm and starts to set up in the container, discard immediately. DO NOT USE THIS ADHESIVE TO BOND A JOINT! When adhesive is allowed to set up in the metal container, the container may reach approximately 400°F (205°C). Do not handle hot containers with- out heavy gloves. This exothermic reaction will generate a dense smoke. Therefore, place the con- tainer outdoors in an open area until it cools. 1.6.4 Joint Assembly 1. Bell and Spigot Joint—THE SPIGOT MUST BE ALIGNED AND LOCKED IN THE BELL. A cocked or misaligned joint will result in false lock-up and possi- ble joint failure either during testing or at a later date. a. When the temperature is below 70°F (21°C), pre - warm the bonding surfaces (after the joint has been cleaned and the cleaner has evaporated). Caution: Evaporation may be slow at extremely low temper- atures. Use a hot air blower and apply heat uni- formly to the bell and spigot until warm (not hot) to the touch (see Fig. 1.6.10). If torches are allowed on the job site (check local codes), use a clean - burning propane torch. Check temperature by touching outside of the bell and inside of the spigot to avoid contact with clean bonding surfaces. If hot to the touch, let cool before applying adhesive. If an electric heating collar is used to prewarm, place the joint together dry, then heat the O.D. of RED THREAD IIA Pipe Sr Fittings ON 11