![]() A test revealed that a full cylinder could be bled out in as little a about 2 minutes. This collar, without much force can be pushed back causing the system to open. There is a collar on the male connection. On this system there are two connection points, male and female. We found during a training exercises that this system could open up accidentally, causing a loss of air. The last and potentially most dangerous problem we found involved the optional Dual EBBS (buddy breathing) system. And the test showed that this could be the case even in above freezing temperatures. No changing cylinders, we would have to change the whole harness. Being form New England, many months out of the year are below freezing so these would become single use harnesses. It took between 14 and 17 minutes for the system to thaw out enough to allow the cylinders to be changed. At the end, the cylinder was frozen into the harnesses in all three cases. ![]() We then emptied the 30 minute bottle over a period of 14 minutes. We wiped the cylinder connection with a wet paper towel (to simulate a damp bottle from rain or over spray) and inserted it into the harness. The ambient temperature was approximately 65 degrees Fahrenheit. We then ran some testing several times, all in above freezing ambient temperatures. ![]() At any given time multiple harnesses were out of service while they thawed inside of the cab of a truck. This was due to the new way they "snap" into the harness. During this fire the cylinders were freezing into the harnesses. Meanwhile we had a fire in sub-freezing temperatures. ![]() Eventually SCOTT came out and changed all the electronics, this did help with the problem but the problem persisted at a much lesser extent. To Scott’s credit they covered the cost of the batteries. This was an on going problem and we had to wait a period of time for a new circuit board to be developed. The new packs were eating up batteries, some at a rate of new batteries every week. The first problem we encountered involved the new electronics. Immediately after putting them into service we began have problems. We purchased the new units several months ago. I writing to warn other departments about our experiences with the new generation SCBA from SCOTT, the NxG2. ![]()
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