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and installation of FlexWorks piping. The installation of Access Pipe is highly recommended for all FlexWorks piping systems. Refer to the Access Pipe installation manual for complete instructions and warranty compliance. 9.4 Measuring Pipe Distances: When measuring the distance be- tween containment sumps to determine the proper length of a flexible pipe section to be installed, it is important to consider that the pipe is flexible and will not be installed perfectly straight. A slight weaving of the pipe in the piping trench is recommended to compensate for ex- pansion and contraction characteristics of the piping. Measurements must be taken through the Duct chase pipe to insure the proper length. The measuring points will be from the face of the OPW-FCS fitting to the next OPW-FCS fitting. Record the "measured distance" and make the following adjustments depending on the connection system used: After the adjustments have been made to the recorded "measured distance", measure the outside of the unrolled flexible pipe carefully, following the bends in the piping and mark the location to be cut with a permanent marker. Cut the pipe with an OPW-FCS pipe cutter as described in the Flexible Piping Manual. NOTICE: Be sure the pipe cutter is sharp and free of chips for a proper cut. Inspect the end of the cut to be sure the construction of the pipe was not damaged or compromised. 9.5 Coupling FlexWorks Piping STOP: Before coupling FlexWorks Piping, some components such as entry boots and the Duct may need to be installed onto the pipe prior to coupling. Refer to the Flexible Piping Manual for further clarification. The FlexWorks piping system requires the use of the OPW-FCS Cou- pling Machine for proper installation of the pipe couplings onto the ends of the flexible pipe sections. Refer to the Flexible Piping Manual for proper coupling machine use and warranty compliance. Different sizes of Swivel Couplings require their own swage kit to properly swage the coupling onto the pipe. Refer to the OPW-FCS Products Price List for a list of the appropriate swage kit. WARNING: OPW-FCS's coupling machine is not intrinsically safe and cannot be used in hazardous areas. NOTICE: Do not use silicone -based lubricants to lubricate the swage. Only metal assembly paste or white lithium grease should be applied into the coupling insert. Make sure entire coupling assembly is on the machine prior to swaging. NOTICE: Make sure that the pipe is in a vertical position an that the coupling ferrule is against the coupling nut and the swivel nut is flush against the faceplate at all times during the swaging cy- cle. 9.6 Coupling Inspection: Inspect the installed pipe coupling assem- bly inside and out to make sure there was no damage to the insert, ferrule or nut during the swaging operation. NOTICE: Before and after the coupling process the protective coupling cover should be kept on the coupling. This precaution will lessen the possibility of damage and contamination by dirt, sand and debris that could compromise the sealing process. 9.7 Installing Coupled Pipe Sections After a pipe section has been coupled and inspected, the coupled pipe section may be connected to the OPW-FCS adapters and/ or fittings. 9.8 Installing Pipe Through Chase: At this stage all of the Ac- cess chase piping sections should already be installed. Install the appropriate size Bull Nose Plug into the coupling and push the FlexWorks piping through the Duct. (Refer to OPW-FCS's Flexible Underground Piping Manual for complete instructions) 9.9 Connecting Pipe Sections After all coupled pipe sections have been inserted into the contain- ment sumps then connection of the pipe sections can begin inside the containment sumps. Prior to connecting all double wall Flex - Works piping with swivel couplings, install the appropriate size test boot. NOTICE: Prior to connecting Swivel Couplings, inspect the pipe couplings to make sure all seals are in place and free of dirt and debris. Look for any damage to the seals that may have occurred during the coupling procedure or when in- stalling through the Access Pipe. 9.9.1 Swivel Fitting Systems: When installing swivel couplings, hand tighten the coupling onto the OPW-FCS fittings until it is snug. With an OPW-FCS swivel wrench, tighten the coupling nut '/<turn more or to 200 in/lbs. Do not allow the pipe to rotate while tighten- ing. The %turn procedure will prevent over tightening of the cou- pling past the maximum 200 in/lbs. CAUTION: Over tightening of the coupling will cause damage to the coupling gasket and result in the eventual leak of the system. CAUTION: Never use pipe dope or sealant on the threads of a Swivel Coupling. 9.9.2 V and 1" Swivel Pipe Couplings: The'/ and 1" FlexWorks pipe couplings are fixed male NPT fittings and are as- sembled as rigid steel pipe. After installing the appropriate test boot, apply a liberal amount of UL Listed thread sealant to the threads of the coupling and tighten to 20 ft/lbs. 9.9.3 Interstitial Test and Connector Tube Assemblies The jacket of double wall FlexWorks piping must be tested to en- sure liquid tightness. Connect all test and connector tubes into the test boots. Tighten all band clamps to 30 in/lbs. 10.0 Testing Supply Pipe It is important to properly test the FlexWorks piping system prior to backfill to insure there are no leaks in the primary or secondary piping. The following test procedures are provided as a guideline only and the manufacturer assumes no responsibility or liability for the consequences of any testing practices. Note: Access piping provides additional protection and the ability to perform routine maintenance or removal of Flex - Works piping and is not intended as containment. Air testing of the Access piping is not required however, should testing of the chase be desired, pressurize the Access Pipe to no more than 5 PSI. MAR 31 W6 Pipe Length Type Couplings Diameter Adjustment Swivel (SPC and 1-1/2" and 2" Subtract 1" DPC 9.5 Coupling FlexWorks Piping STOP: Before coupling FlexWorks Piping, some components such as entry boots and the Duct may need to be installed onto the pipe prior to coupling. Refer to the Flexible Piping Manual for further clarification. The FlexWorks piping system requires the use of the OPW-FCS Cou- pling Machine for proper installation of the pipe couplings onto the ends of the flexible pipe sections. Refer to the Flexible Piping Manual for proper coupling machine use and warranty compliance. Different sizes of Swivel Couplings require their own swage kit to properly swage the coupling onto the pipe. Refer to the OPW-FCS Products Price List for a list of the appropriate swage kit. WARNING: OPW-FCS's coupling machine is not intrinsically safe and cannot be used in hazardous areas. NOTICE: Do not use silicone -based lubricants to lubricate the swage. Only metal assembly paste or white lithium grease should be applied into the coupling insert. Make sure entire coupling assembly is on the machine prior to swaging. NOTICE: Make sure that the pipe is in a vertical position an that the coupling ferrule is against the coupling nut and the swivel nut is flush against the faceplate at all times during the swaging cy- cle. 9.6 Coupling Inspection: Inspect the installed pipe coupling assem- bly inside and out to make sure there was no damage to the insert, ferrule or nut during the swaging operation. NOTICE: Before and after the coupling process the protective coupling cover should be kept on the coupling. This precaution will lessen the possibility of damage and contamination by dirt, sand and debris that could compromise the sealing process. 9.7 Installing Coupled Pipe Sections After a pipe section has been coupled and inspected, the coupled pipe section may be connected to the OPW-FCS adapters and/ or fittings. 9.8 Installing Pipe Through Chase: At this stage all of the Ac- cess chase piping sections should already be installed. Install the appropriate size Bull Nose Plug into the coupling and push the FlexWorks piping through the Duct. (Refer to OPW-FCS's Flexible Underground Piping Manual for complete instructions) 9.9 Connecting Pipe Sections After all coupled pipe sections have been inserted into the contain- ment sumps then connection of the pipe sections can begin inside the containment sumps. Prior to connecting all double wall Flex - Works piping with swivel couplings, install the appropriate size test boot. NOTICE: Prior to connecting Swivel Couplings, inspect the pipe couplings to make sure all seals are in place and free of dirt and debris. Look for any damage to the seals that may have occurred during the coupling procedure or when in- stalling through the Access Pipe. 9.9.1 Swivel Fitting Systems: When installing swivel couplings, hand tighten the coupling onto the OPW-FCS fittings until it is snug. With an OPW-FCS swivel wrench, tighten the coupling nut '/<turn more or to 200 in/lbs. Do not allow the pipe to rotate while tighten- ing. The %turn procedure will prevent over tightening of the cou- pling past the maximum 200 in/lbs. CAUTION: Over tightening of the coupling will cause damage to the coupling gasket and result in the eventual leak of the system. CAUTION: Never use pipe dope or sealant on the threads of a Swivel Coupling. 9.9.2 V and 1" Swivel Pipe Couplings: The'/ and 1" FlexWorks pipe couplings are fixed male NPT fittings and are as- sembled as rigid steel pipe. After installing the appropriate test boot, apply a liberal amount of UL Listed thread sealant to the threads of the coupling and tighten to 20 ft/lbs. 9.9.3 Interstitial Test and Connector Tube Assemblies The jacket of double wall FlexWorks piping must be tested to en- sure liquid tightness. Connect all test and connector tubes into the test boots. Tighten all band clamps to 30 in/lbs. 10.0 Testing Supply Pipe It is important to properly test the FlexWorks piping system prior to backfill to insure there are no leaks in the primary or secondary piping. The following test procedures are provided as a guideline only and the manufacturer assumes no responsibility or liability for the consequences of any testing practices. Note: Access piping provides additional protection and the ability to perform routine maintenance or removal of Flex - Works piping and is not intended as containment. Air testing of the Access piping is not required however, should testing of the chase be desired, pressurize the Access Pipe to no more than 5 PSI. MAR 31 W6