I kind of think it's the nature of diesels to be pretty rough given the compression ratios. Then again they're pretty tough too.
On Fri, Mar 7, 2014 at 2:35 PM, Tom Duross <[email protected]> wrote: > Clarke has a system called PLD, it's like cruise control for the engine. > It maintains a constant discharge pressure regardless of flow just like > VFD. > It's pretty slick, I've done a few. > It's factory set for pressure and usually set for something in the region > of > 80-120% of design flow and pressure. > It's cool to watch (like a VFD) as the pump starts slower than constant > speed and ramps up as you increase flow. > But yes, as environmental factors effect exhaust, more accessories appear > all requiring maintenance and upkeep. > We're moving into Tier 4 now and tier 3 will eventually be phased away, as > was tier 2. > > I will say, referencing that old 1971 Cummins from my other thread; 43 > years old, stone cold (block heater dead and 10° outside, room heater > barely keeping it above freezing), 7800 hours on the clock, I did a quick > PM > and she cranked right up. Can't always say that for a 43 year old Lincoln > or US Motor. > Tom > > Is there a way or such a thing as soft starting a diesel? > > I seem to recall a LONG time ago FM had a report out concluding 25%+ of > diesel pump would fail during a fire. Now I could be wrong on the long, > FM, > 25%. Does anybody else recall something along these lines current or old? > > I admit I am biased against diesel pumps, cost more, require more > maintenance and I believe are less reliable mostly due to the maintenance > that rarely gets done properly. I suppose I'd agree they are more reliable > IF maintained. I also have a surge pressure issue. But the most important > thing is I'm open minded either way for someone to school me. I could be > off base or there is supporting justification. > > And no, we have yet to delve into the reliable power question officially. > I > was told by the PM and other discipline leads we're using diesel but no one > can tell me why exactly. So I'm making a case for either contingency. > > Chris Cahill, PE* > Associate Fire Protection Engineer > Burns & McDonnell > Phone: 952.656.3652 > Fax: 952.229.2923 > [email protected]<mailto:[email protected]> > www.burnsmcd.com<http://www.burnsmcd.com/> > *Registered in: MN > > > Proud to be #14 on FORTUNE's 2014 List of 100 Best Companies to Work For > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
