3-29
April 2004
Installing the PDJ Dampening Jacket (cont.)
!WARNING!
The pipe and the dripping flu id will cause severe
burns upon cont act with bare skin. Also, be sure
not to inhale the fumes generated during the
DMP-3 curing cycle.
4. Install the fixture over the jacket, adjusting the spacing to
match the prestamped transducer holes and PT878GC spacing
calculations.
5. Apply a thin bead of CPL-16 coup lant. Spread it in a thin layer
about 6 mm (0.25 in.) wide on each transducer face.
6. Install the transducers into the yokes, and tighten the hold-
down screws until the couplant begins to spread.
7. If you wish, reinstall insulation over the pipe, making sure that
the yokes and junction boxes protrude through the pipe.
8. Wait 15 min. for the couplant to cure and finger-tighten the
transducer hold-down screws. Do not use pliers or any other
tools.
9. Using a wrench, tighten the transducer hold-down screw
backing nuts to preven t loosening due to vibration and thermal
expansion.