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4-W, <br />Primary Piping System Installation <br />T.A.B. Joint JOINT CURE <br />T.A.B. joint installation pro- <br />cedures follow the normal bell Ambient Cure <br />and spigot operations of cleaning,- Cure time is the time required for the adhesive in the <br />adhesive mixing, etc. as described assembled joint to harden. Cure time depends on the type <br />previously. The threads on the of adhesive and the ambient temperature, as shown in Table <br />bonding surfaces are designed to 7. <br />improve the reliability of the joint, <br />particularly under adverse conditions. Two T.A.B. wrenches TABLE 7. Adhesive Ambient Cure Time <br />or strap wrenches are recommended when joining T.A.B. <br />pipe. Separate T.A.B. wrenches are available from FGS <br />Smith Fibercast for each size pipe. The wrenches lock <br />around the pipe and force the pipe into a very slight oval <br />shape. Therefore, the wrenches must be placed 6" to 12" <br />(150 mm to 300 mm) awrayfrom the jointto assure good joint <br />make up. <br />NOTE: If T.A.B. wrenches are not available, strap wrenches <br />such as Ridgid No. 2-P, can be used. To prevent damage <br />to the pipe wall, wrap the strap wrench around the pipe as <br />shown. <br />CAUTION: Improper use of pin <br />strap wrenches can cause <br />point -loading damage and/or <br />bad joints that are locked up. pip@ �. <br />In orderto gain experience in determining <br />rap <br />the proper amount of torque to use, the <br /># Handle <br />following procedure is recommended i1. <br />for the first few joints. DO NOT OVER <br />TIGHTEN. <br />... _. +4 i. ♦ <br />i.++` i i• ... 1a 101T <br />i+; is �- i. � Y i 1: r ►. + Y <br />T.A.B. <br />wrenches. <br />Check lock t by moving . . pipe in an i <br />and -down or side-to-side motion. The moviement must <br />be sufficient to move the joint being checked. No <br />14A 6A-MU6141 III I - . .l lit -41 Ell 1141011621. - <br />Connections into fittings are made using the normal bell and <br />spigot methods. <br />Adhesive <br />Type <br />Temperature <br />Degrees F Degrees C <br />Cure Time <br />(Hours) <br />7000 <br />110 43.3 <br />2 <br />90 32.2 <br />3 <br />80 26.7 <br />5 <br />70 21.1 <br />8 <br />60 15.6 <br />18 <br />55 12.8 <br />24 <br />8000 <br />110 43.3 <br />1 <br />90 32.2 <br />2 <br />80 26.7 <br />4 <br />70 21.1 <br />6 <br />60 15.6 <br />12 <br />55 12.8 <br />18 <br />NOTE: Cure time is the time before the line can be tested. Times may vary depending <br />on temperature, humidity, etc. <br />Heat Assist Methods <br />When working attemperaturesbelow 55°F or in situations <br />where rapid cure is necessary, Fiber Glass Systems has <br />developed heat assist methods for curing adhesive bonded <br />pipe or fitting joints. <br />A. Electric Headnig Collier - <br />The most effelictive method <br />of heat assist is electric <br />heating collars. Reuisable <br />hosting collars; am energized UP <br />by a I OWI 20 volt power <br />source. NOTE: 220/240 volt heating collars are available <br />on special order and are shipped without the male <br />plug. <br />• Curing Operation - It is desirable, but not necessary, <br />for the curing operation to immediately follow the bonding <br />operation. However, in cold weather it Is preferable to <br />bond only the amourd of pipe that can be cured during <br />the same day. <br />If genemlor is used, assure the power supply is adequate <br />+o� all of S+ s: used. Use 1101120 Volt <br />only. When extension cords am used, make certain they <br />can , the totalwattage of the collars r i <br />. Refer <br />to Table 4 on page 4. <br />• When temperatures tall below 3r1F (OOC), fiberglass <br />insulation should be ..r:_i to heat collarsr; <br />proper <br />