COMPLIANCE INFO_1999-2005 - Laserfiche WebLink

Home Browse Search

SECTION 6 ♦ Installation Reusable heating collars are energized by a 110/120 volt NOTE: These cure times are calculated using heat- power sourceM (see Fig. 1.6.17). ing collars from Smith Fiberglass Products. These heating collars can reach a maximum temperature We recom- of 330°F (166°C). Using heating collars that reach mend external lower temperatures or have different time vs. tem- heat to assure perature curves may result in improper cure of full adhesive bond. Therefore, it is recommended that only cure when am- heating collars from Smith Fiberglass Products be bient tempera- used. ture is below 70°F (21°C). d. CAUTION: Allow the heated joint to cool until it is comfortable to the touch before any stress is It is desirable ERapplied to the joint. Avoid bending or pulling at but not neces- heat assist temperatures. Normal lifting to re- sary for the FIGURE 1.6.17 move the heat assist equipment will not harm curing opera- the joint. Any stresses on the pipe due to bend- tion to imme- ing or sagging should be relieved prior to heat diately follow the bonding operation. However, it is cure. preferable to bond only that amount of pipe and fittings that can be cured during the same day. Pipe or subassemblies can be moved before the joints are cured as long as care is taken that the lock-up of 1. Curing pipe joints the joint is not disturbed. Bending or excessive move- ment is not advised. a. Center the If a generator is used, be sure that it will furnish heating enough power to supply all of the units being used. collar Use 100/120 volt AC. only. When extension cords are around used, make certain they can handle the total wattage the of the collars being used. See Section 3,Tables 1.3.1 bonding and 1.3.2. area of the 2. Curing fitting joints joint to be cured When using Smith Fiberglass Products heating collars (see Fig. that fasten with straps and/or snaps, the general proce- 1.6.18). dure for curing adhesive bonded, in-line (thin wall) fit- Repeat FIGURE 1.6.18 ting joints (such as couplings and threaded adapters)is this step the same as that for curing pipe joints. However, be- for all joints to be cured. cause of the outside diameter size difference between pipe and standard(thick wall)fittings, take the follow- b. Plug the heating collar into a 110/120 volt outlet. ing steps: c. Heat the joints for the length of time listed in Table a. Place the 1.6.3. heating col- lar so that as much of the bonding TABLE 1.6.3 Adhesive Cure Times When area as possi- Using Electric Heating Collars ble is cov- Pipe Size Minimum Cure Time(minutes) ered (see Fig. s (in.) (mm) Pipe(2) Fittings 1.6.19). 2 50 10 20 3 75 10 20 4 1!00 10 20 FIGURE 1.6.19 (1)Note: 220/240 volt heating collars are available on special order. 240 (2)To calculate adhesive cure time when using electric heating collars on volt collars are shipped without the male plug. sleeve couplings and threaded adapters,use"Pipe"column. 14 — Installation Instructions