Once the transmitter end gas-barrier connector and the first cable section are installed, subsequent SCL950 cable assembly sections (#207616) are installed at high or low levels as specified on the installation design layout. This layout shows the support locations for the cable runs, specifies whether the supports are at high or low levels, and gives the location of the bends in the cable installation. When bends in the cable runs are indicated, the cable section(s) are bent prior to installation according to the procedures shown in Section 3.5.4.
The same procedure is used to install either straight or bent cable sections, and the steps are as follows:
NOTE: During installation, it is desirable to run the dehyrdrator to continuously purge the line. If installation is stopped prior to completion, refer to the shutdown procedures in Section 3.5.5.
WARNING: DEPRESSURIZE CAPPED LINES BEFORE CONTINUING AN INSTALLATION.
1. Loosely install the hangers for the next section, except for the hanger U-bolts. Apply the rubber pads to the cradles, and loosely attach the cradles, braces, and clamping plates to the supports (see illustration of hanger assembly in Section 3.5.2).
NOTE: It is essential, as with all pressure-sensitive adhesives, that the surface to which the pad is applied is clean, dry, and free of grease and oil.
3. Remove the pressure plate at the ANT end by first removing the flange hardware. Since this plate has an integral threaded stud attached to the center conductor, hold the plate in position during and immediately after removal of the final flange bolt. This hardware can then be discarded.
CAUTION: REMOVE ALL HARDWARE CAREFULLY. Use the torque wrench assembly (#220045) and the combination wrench to loosen the hex nut. Remove the nut and lock washer. Then, use a knife or screwdriver to pry off the threadseal washer on this side. Do not remove this threadseal washer by striking the threaded end of the bolt with a hammer or similar tool. After prying off this washer, remove the bolt using care to avoid abrasion.
4. Rotate the pressure plate counterclockwise to begin disengagement of the threaded stud. During the disengagement, carefully lower the plate until the inner conductor is resting against the outer conductor. Disengage completely and remove the pressure plate. Use care to avoid damage to the conductors or flame.
5. Cover the ANT end of the cable section with one of the supplied plastic bags.
6. Remove the pressure plate at the TX end, again by first removing the flange hardware. Since this plate also has an integral threaded stud attached to the center conductor, hold the plate in position during and immediately after removal of the final flange bolt.
7. Pull the plate horizontally and slide approximately 4 inches (102 mm) of the inner conductor out of the cable section. Use the driver-ring torque wrench (#220047) to hold the exposed driver ring and rotate the plate counterclockwise to disengage the threaded stud. Remove the pressure plate, using care to avoid damage to the conductors or flange. After removal of the plate, the inner conductor should remain exposed on the TX end for apporximately 4 inches (102 mm).
