Nice video ! I never work on 460v unit before. It’s pretty interesting. Wondering if there’s gonna be second video for transformer ? Thanks for sharing 👍
Nice Work. 480v circuit faults typically go Boom taking wiring and connector with it. 480v is probably an everyday thing for you, but I get amped up when I'm working around it.
Shorted windings. 600v primary is only dropping to 570v on your secondary instead of 480v. It's possible that the short to ground caused enough heat or it just found a weak spot in the wire coating and broke through, shorting the windings. Was there a breaker or fuse for that low voltage transformer? Perhaps that would prevent it in the future. That, and 2 DAMN GROMMETS!
@Tom Garbo I agree. Question is, did he wire up the two broken wires correct via a schematic or just from the burned up parts? It definitely seemed logical, black to black and blue to blue, especially with the burned connectors to match. But, we all know things don't always follow logic and these wires could have nothing to do with it. Curious as to the follow up if he gets the job.
If you are getting 460 phase to phase and not 480. Wouldn't that indicate the buildings transformer is a Y configuration and not delta. That would explain the high 'wild' phase
The primary to the unit is 575v it steps down to 460 within the cabinet. I'm was getting 560 on 2 phases on that motor, should be 460. The internal transformer is pooched.
Funny thing is all my training is from carrier, but I hate their stuff. Some of their package units are very hard to service. Some of the newer ones have cheap plastic pulleys. Lenox is pretty good but too expensive.
Why is there a need for 600v...i know 460...but why more than that? Or where those transformers supposed to step it down? That whole system is effing scary as hell!!!
Is it possible that they expect everyone to have a main stepdown transformer for the entire property? If so that maybe just the voltage they've decided to use to supply all of the properties.
AWESOME VID! I'm a nuclear weapons systems trained technician, (now HVAC ELECTRIC company owner and Q.A. inspector). This comment, is a SPANKING. A rebuke. But, a genuine respectfully intentioned rebuke. (A wise man, willingly accepts RUBUKE.) YOU are clearly a VERY GOOD TECH, and you will become an EXCELLENT TECHI I bet my money on it. I totally respect your ATTENTION to DETAIL, AND your TROUBLESHOOTING METHODOLOGY. BUT, let's be honest. This was a TROUBLESHOOTING FAIL. YES, a fail. WHY and HOW? Simple, you failed, NOT out of lack of skills, but rather out of PATIENCE ABANDONMENT. You DOVE in TOO DEEP, TOO SOON. By doing so, you created a VISUAL INSPECTION TROUBLESHOOTING FAIL. 1. Broken wires were clearly visible, like they were a BAGEL sitting in a POT of GRITS! 2. Transformer box base had VERY visible brown goo leakage. THE CURE, is simple. SLOW the FK DOWN! Give your GOD GIVEN TOOLS, i.e. (EYES, EARS, NOSE, TOUCH), MORE TIME, to do THEIR JOB before your MAN MADE tools, are allowed to do theirs. PATIENCE, is YOUR FRIEND, not your FOE. (The cause of the Arkansas Titan nuclear missile site explosion was NOT a lack of skills. It was PATIENCE ABANDONMENT. BEWARE IT. PATIENCE RULES over ALL OTHER SKILLS. PATIENCE, PATIENCE, PATIENCE. Develop an HONE your PATIENCE SKILL above ALL other skills. You'll like it! Trust me. It pays off in TIME DIVIDENDS. How? Simple. Recite this mantra: "If there is never enough time to do it right the first time, then how is it, there is always plenty of time, to do it ALL OVER AGAIN??" Your welcome, Brett Yenzer U.S. AIR FORCE VETERAN
Thank you but you are forgetting one thing. If I found the problem in 2 seconds, there would be no video. Those watching this have now seen and understand some steps and how to get through them.
@@HVACKnowItAll TRUE! Well stated. Impressive rhetorical argument as well! You salvaged honor, out of a trash heap of a diagnostic. Again, impressive argument!! Were you raised by your mother? I've met few guys who could made that good of an argument, without a strong female circle logic influence in their life. Nonetheless, IMPRESSIVE!!
@@metal2444 Are you asking why OR how? You already stated the 'what' in your question. But, it depends on the missile system. Liquid fueled rocket missiles, (ie. Titan, etc), were a just tad bit more volatile, (meaning A LOT more), than the solid rocket fuel systems. So, having batts gassing off 24/7 was, understandably, problematic. I worked on Minute Man II launch control systems. Sounds like you worked on an older system too?
@@BYENZER Not military or testing you. Interested in sequence operation from launch initiated and the filling dry batteries old titan system . Read where this happens rather quickly batteries charged on flight to target?
Always be thorough!
The true definition of a thorough hvac technician I'm trying to follow your lead in my young career 🙏🏽
Always blows my mind how you guys work with so many different voltages .
Over here we have either 230-240 V or 400-410V .
Good detective work mate 👍
Thank you for watching, much appreciated and yes...lots of voltage lol
Nice video ! I never work on 460v unit before. It’s pretty interesting. Wondering if there’s gonna be second video for transformer ? Thanks for sharing 👍
If I get the job approved for sure.
Nice Work. 480v circuit faults typically go Boom taking wiring and connector with it. 480v is probably an everyday thing for you, but I get amped up when I'm working around it.
460 is actually rare for me...Most common is 575
Shorted windings. 600v primary is only dropping to 570v on your secondary instead of 480v. It's possible that the short to ground caused enough heat or it just found a weak spot in the wire coating and broke through, shorting the windings.
Was there a breaker or fuse for that low voltage transformer? Perhaps that would prevent it in the future. That, and 2 DAMN GROMMETS!
If a fuse was added it would have to protect the 575 to 460 transformer. You always protect the upstream power supply.
@Tom Garbo I agree. Question is, did he wire up the two broken wires correct via a schematic or just from the burned up parts? It definitely seemed logical, black to black and blue to blue, especially with the burned connectors to match. But, we all know things don't always follow logic and these wires could have nothing to do with it. Curious as to the follow up if he gets the job.
@@HVACKnowItAll wouldnt it be crazy if the voltage issue is what took out the other compressor.
So why with all the logic and smart circuits on the unit , voltage is not monitored? notice how the bx cable was terminated.
There is not much logic, it's just a relay board and heating control. Voltage is not monitored no.
Wow great troubleshooting skills love your video's.
Thank you!
If you are getting 460 phase to phase and not 480. Wouldn't that indicate the buildings transformer is a Y configuration and not delta. That would explain the high 'wild' phase
The primary to the unit is 575v it steps down to 460 within the cabinet. I'm was getting 560 on 2 phases on that motor, should be 460. The internal transformer is pooched.
Funny thing is all my training is from carrier, but I hate their stuff. Some of their package units are very hard to service. Some of the newer ones have cheap plastic pulleys. Lenox is pretty good but too expensive.
I do like Lennox RTUs
Very interesting I've yet to see dual transformers in a RTU
In Canada lol
@@HVACKnowItAll I see that makes sense thanks
i ve seen units with 575 for compressors,and 460.volts for condenser fans.transformer used for fans.
Yes, that's what this is for
A high Voltage can be the symptom of a missing Neural somewhere. Are all the incoming phases the correct Voltage?
There is no neutral on 3 phase. Only line 1 line 2 and 3
@@HVACKnowItAll Some shorted turns on the primary then?
Interesting Troubleshooting Video
Interesting call!
wow! not your usual transformer fail there lol. stepping up instead of stepping down!
Yes lol correct!
@@HVACKnowItAll I'm an industrial electrician, and that's a first for me! way cool man!
Why is there a need for 600v...i know 460...but why more than that? Or where those transformers supposed to step it down? That whole system is effing scary as hell!!!
Usually that kind of voltage we got here in canada, we rarely have less than 600V in a three phased unit in quebec also
Is it possible that they expect everyone to have a main stepdown transformer for the entire property? If so that maybe just the voltage they've decided to use to supply all of the properties.
In Canada 575v is common on 3 phase units.
575 is common and mostly used on 3 phase equipment
@@HVACKnowItAll Yah I got that, it works out to be nearly 400V per phase.
Great detective work!!! Thanks man!
Thank you!
AWESOME VID! I'm a nuclear weapons systems trained technician, (now HVAC ELECTRIC company owner and Q.A. inspector).
This comment, is a SPANKING. A rebuke. But, a genuine respectfully intentioned rebuke. (A wise man, willingly accepts RUBUKE.)
YOU are clearly a VERY GOOD TECH, and you will become an EXCELLENT TECHI I bet my money on it.
I totally respect your ATTENTION to DETAIL, AND your TROUBLESHOOTING METHODOLOGY.
BUT, let's be honest. This was a TROUBLESHOOTING FAIL. YES, a fail.
WHY and HOW? Simple, you failed, NOT out of lack of skills, but rather out of PATIENCE ABANDONMENT.
You DOVE in TOO DEEP, TOO SOON.
By doing so, you created a VISUAL INSPECTION TROUBLESHOOTING FAIL.
1. Broken wires were clearly visible, like they were a BAGEL sitting in a POT of GRITS!
2. Transformer box base had VERY visible brown goo leakage.
THE CURE, is simple. SLOW the FK DOWN!
Give your GOD GIVEN TOOLS, i.e. (EYES, EARS, NOSE, TOUCH), MORE TIME, to do THEIR JOB before your MAN MADE tools, are allowed to do theirs.
PATIENCE, is YOUR FRIEND, not your FOE.
(The cause of the Arkansas Titan nuclear missile site explosion was NOT a lack of skills. It was PATIENCE ABANDONMENT. BEWARE IT.
PATIENCE RULES over ALL OTHER SKILLS. PATIENCE, PATIENCE, PATIENCE. Develop an HONE your PATIENCE SKILL above ALL other skills. You'll like it! Trust me. It pays off in TIME DIVIDENDS. How? Simple. Recite this mantra: "If there is never enough time to do it right the first time, then how is it, there is always plenty of time, to do it ALL OVER AGAIN??"
Your welcome,
Brett Yenzer
U.S. AIR FORCE VETERAN
Thank you but you are forgetting one thing. If I found the problem in 2 seconds, there would be no video. Those watching this have now seen and understand some steps and how to get through them.
Thanks for your service.Can you explain dry batteries in the silo sit empty until launch is called they release acid into batteries at that time?
@@HVACKnowItAll TRUE! Well stated. Impressive rhetorical argument as well! You salvaged honor, out of a trash heap of a diagnostic. Again, impressive argument!! Were you raised by your mother? I've met few guys who could made that good of an argument, without a strong female circle logic influence in their life. Nonetheless, IMPRESSIVE!!
@@metal2444 Are you asking why OR how? You already stated the 'what' in your question. But, it depends on the missile system. Liquid fueled rocket missiles, (ie. Titan, etc), were a just tad bit more volatile, (meaning A LOT more), than the solid rocket fuel systems. So, having batts gassing off 24/7 was, understandably, problematic. I worked on Minute Man II launch control systems. Sounds like you worked on an older system too?
@@BYENZER Not military or testing you. Interested in sequence operation from launch initiated and the filling dry batteries old titan system . Read where this happens rather quickly batteries charged on flight to target?
There should be 3 buck Transformers think you’re probably missing one because someone bypassed it
The transformers for 575v to 460 are $750 Canadian a piece, one ks defective
Maybe there was someone using this unit for welding lol.
Haha
Hustler
For life