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Primary Piping System Installation <br /> CAUTION: Improper use ,T,CEJ <br /> ® of strap wrenches <br /> can cause point- Pin A. Ambient Cure <br /> Pin <br /> loading damage and/or bad Cure time is the time required for the adhesive in the as- <br /> joints that are not locked up. r'—` sembled joint to harden. Cure time depends on the type of <br /> In order to gain experience in de- \ adhesive and the ambient temperature,as shown in Table 7. <br /> termining the proper amount of Pipe <br /> torque to use,the following prose- Strap \ TABLE 7. Adhesive Ambient Cure Time <br /> dure is recommended for the first \ <br /> fewjoints. DO NOT OVER TIGHT- Adhesive Temperature Cure Time <br /> Ely, Type ("F) (hrs.) <br /> 110 2 <br /> 1. Cover all machined areas on the spigot 90 3 <br /> and at least one-half inch beyond the last thread in the <br /> bell with the adhesive. 7000 80 5 <br /> 2. Screw the pipe together by hand,ensuring that the 70 8 <br /> joint is not cross-threaded. Two inch(50 mm)diame- 60 18 <br /> ter pipe can be hand tightened. To ensure complete <br /> joint make-up for 3"and 4"(75 mm and 100 mm)di- 55 24 <br /> ameter pipe,use T.R.B.wrenches. 110 1 <br /> 3. Check lock-up by moving free end of pipe in an up- 90 2 <br /> and-down or side-to-side motion. The movement <br /> must be sufficient to move the joint being checked. 8000 80 4 <br /> No movement should be visible in the joint. If any 70 6 <br /> movement exists,continue to tighten until no move- 60 12 <br /> ment is visible. 55 18 <br /> Connections into fittings are made using the normal bell NOTE:Cure time is the time before the line can be tested.Times may <br /> and spigot methods. vary depending upon temperature,humidity,etc. <br /> B. Heat Assist Methods <br /> When working at temperature below 55"F or in situations <br /> where rapid cure is necessary,Smith Fibercast has devel- <br /> oped heat assist methods for curing adhesive bonded pipe or <br /> fitting joints. <br /> 1. Electric Heating Collar <br /> The most effective method <br /> of heat assist is electric <br /> heating collars. Reusable <br /> heating collars are energized <br /> by a 110/120 volt power <br /> source. NOTE: 220/240 volt heating <br /> collars are available on special order and are shipped <br /> without the male plug. <br /> a) Curing Operation—It is desirable,but not neces- <br /> sary,for the curing operation to immediately follow <br /> the bonding operation. However,in cold weather, <br /> it is preferable to bond only that amount of pipe <br /> that can be cured during the same day. <br /> b) When temperatures fall below 30"F,fiberglass in- <br /> sulation should be added to heat collars to achieve <br /> a proper cure. <br /> Pipe or sub-assemblies can be moved before the <br /> joints are cured as long as care is taken that the lock <br /> of the joint is not disturbed.Bending or excessive <br /> movement is not advised. <br /> RED THREAD IIA Pipe & Fittings °— 10 <br />