TUBING TERMINATION
- PRM
Care must be taken when terminating the start and end of the tubing to ensure leak proof connections. Below
are the instructions for termination:
1. Remove knurled nut from plated tube fitting and slide over end of tubing. The end of the tubing must be
cut square and clean.
DO NOT
use pliers or wire cutters for cutting the tube. These tools will collapse the
end of the tubing and could create a leak point. The use of a sharp utility knife is suggested, while rolling the
tubing on a flat surface. Do not use any sealants on the connection.
2. Firmly push the end of the tube down over the end of the fitting. It may require working the tubing around
until it goes on (see following figure). It is important that the end of the tubing be inserted
ALL
the way over
the tip of the fitting. Hold the tubing in place
firmly
in one hand while tightening the nut with the other. Use a
12mm wrench (or adjustable) to tighten the nut. Resistance will be felt when the nut bottoms out. Do not over
tighten. The procedure is the same for both the accumulator cylinder fitting and the End of Line Fitting. It
may be helpful to place the End of Line Fitting in a small vise while terminating the tubing to it.
3. Once the system is pressurized and put into service (see below), both connections should be thoroughly
leak checked with leak check fluid or soapy water.
4. Record the date of tubing installation on the tubing replacement label and affix the label to the detection
accumulator cylinder.
December 2008
Section 4 Installation
Page 4 – 6
Amerex Restaurant Fire Suppression System (EX 4658)
