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Controman, Was the Mark VIe supplied when the turbine was new, or was it supplied as an upgrade of an older Speedtronic turbine control system on an existing unit (in other words, a turbine control system upgrade or retrofit)? What are the DC voltage readings (positive and negative), with...

barindra75, What was the exact Process Alarm message the Speedtronic turbine control system annunciated when the turbine "tripped"? What happened to the load during the transfer attempt and right before the unit "tripped"? Without being able to see the actual liquid fuel piping at your...

I would only add a couple of things--and thanks to bkarim55 for mentioning the rotor/casing issues. First, 200,000 hours is a lot of hours--and there are many machines which wouldn't last even that long without major refurbishment. To that end, GE is still learning about the lives of various...

voyager2_kbc, Thanks very much for the feedback! It's the little things (like under-sized fuel injectors) that can cause big problems. I'll bet the fuel rack was hitting the maximum stop under load, which would have meant either the rack was misadjusted during re-assembly or there was a fuel...

bryan, Thanks for the information; there was a similar part number for an AC selector card, and I didn't want to be confusing them. Hopefully a reader can help with some information or a part. Do you belong to any User Groups that you can ask the same question of?

Hi, bryan, > Can anybody here help me find IS215ACLEH1B. Can you tell us what it is, and some description of where it's used? Thanks!

ashiq, A quick search using my preferred World Wide Web search engine today (Bing) revealed ikey's Corporate site: http://www.ikey.com/ Clicking on the 'Partners' area at the to of the Main Page took me here: http://www.ikey.com/ikey-partners/ Scrolling down took me to...

Shyam, In the later years of Mark V production "the factory" would often send a floppy disk with some batch files to install files in the PROM subdirectory as part of card replacement. (They did the same when new PROMsets were provided, also.) And if I recall correctly there was one version...

Phil Corso, CSA said precisely what he meant to say, choosing not to delve into how difficult--or impossible, probably--to design and build a four-pole replacement rotor that could safely be used in a two-pole alternator at the same power as was previously being produced. Frankly, the...

Jameelrahman, In theory it's possible to change the alternator RPM input required to produce the same frequency by changing the number of generator poles. However, the same turbine could not be used unless the reduction gear box was also changed. Alternator prime movers are all designed and...

Walt, Fuel regulator, eh? That brings back fond memories! I upgraded two two-shaft fuel regulator systems to Mark IVs "back in the day", and that was quite an experience. One unit had to continue to run while we upgraded the other unit--and disconnecting them without tripping the running unit...

Mike Arnold, > How long have you been experiencing this problem? did this happen > before or only recently? I have seen a similar problem before, when, a few months after new cranes (and diesel gen-sets) were installed all of a sudden the new cranes began to experience a lot of...

anonymous, Thanks for the feedback. I found an old version of GEH-6195, the Mark V Application Manual, and in Appendix D, Fig. 28, it shows the N24 VDC power supply for proximitors from each control processor (<R>, <S> and <T>) is high-selected using diodes on the TBQD card. So, it's...

shyam, Thanks for the feedback. I believe the Mark V Maintenance Manual, GEH-5980, describes the process of setting Stage Link ID and Voter ID. It's done with the SLCC keypad. Once you access the "menu" of possible options on the SLCC you scroll through the various options using the INC...

bkarim55, I've said it before, and I'll say it again: I haven't seen every GE-design Frame 9E heavy duty gas turbine that GE Belfort has come up with. They are known for stretching the envelope, and a pressurized Cooling Water system may be another of their we-will-because-we-can and...

Mustafa Jamal, maythem and bkarim55 bring up good points--the suction strainers of Cooling Water pumps can often become clogged and restrict the flow of Cooling Water. Low flow can contribute to the collection of air in various high points in the Cooling Water system. (High points are defined...

shyam, Hmmmmm.... GE recommends using a light film of conductive grease (usually supplied in the boxes spare cards are shipped in) on all of the ribbon- and cable connectors. This grease usually needs to be re-applied every two years or so. Have you been applying conductive grease to all...

bkarim55, Many GE-design heavy duty gas turbines were/are supplied with on- or off-base cooling water systems. Earlier packages had the water-to-air heat exchangers mounted above the Accessory Compartment, some even had fans to move the air over the hear exchanger fins driven mechanically...

Mustafa Jamal, In trying to understand other possible reasons for the questions, the fluid in the expansion tank isn't actively involved in cooling; it's just a storage tank for being able to see the level in the cooling water system both when the turbine is running, and when it's not (when...

deepukb, You haven't told us when this problem started: After a maintenance outage? How long has it been since the last maintenance outage? Did the problem start after a trip from load? Has anyone checked the fuel filters/strainers/knock-out drums to see if there are any entrained liquids in...