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Type: Posts; User: jw-lu597

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  1. Replies
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    There are electric heaters in the coils and in...

    There are electric heaters in the coils and in the pans, so no fans during defrost, and the defrost termination and fan delay are not combined, they're seperate klixons. The freezers contain ice...
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    Yes, I have been back for random service and seen...

    Yes, I have been back for random service and seen one of the fans that I had replaced in the past stuck. Sometimes the fans that are stuck don't start up right away -- I always just thought that...
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    The fan delays are fine, and last time I checked,...

    The fan delays are fine, and last time I checked, they took a few minutes. I'm thinking about moving them to make this even longer. And yes, the defrost terminations are there, and functional. I...
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    Thanks guys. I checked the defrost ops on all of...

    Thanks guys. I checked the defrost ops on all of them when I found that one that had the DT and FD buried in ice, and there's no evidence of moisture being blown onto the ceilings/floors and product...
  5. I would almost positively say that they come as a...

    I would almost positively say that they come as a set, which is safer and less labor-intensive anyway since it's a burnout situation. You could probably squeeze a pancake-style suction drier in...
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    That could very well be it, thanks. I'll take a...

    That could very well be it, thanks. I'll take a look at that next time I'm out there. Moisture always seems to find a way, and the fact that the stats are set to -20 doesn't help -- not that the...
  7. I've always been told never to replace a single...

    I've always been told never to replace a single scroll compressor in a tandem set. Not because it's wrong, necessarily, it's just that every time I source a compressor using the UNIT info rather...
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    All the Russell evaps that are giving us trouble...

    All the Russell evaps that are giving us trouble are 8 years old. They're 4-fan and 6-fan evaps, and they all have trouble. It's unlikely that the blades are different -- I've changed several of...
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    Thanks, yeah, I may have to try that. It is...

    Thanks, yeah, I may have to try that. It is happening to all the Russell Evaps in 3 different freezers. As for the defrost cycles, I did have an issue on one where ice built up over time on the...
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    That's nothing. I carry beeswax, corrugated...

    That's nothing. I carry beeswax, corrugated paper, and several exotic oils and just build my own capacitors on site. Sell them cheap to the customer, too, it's just the labor that gets them.
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    Inside the plastic guards, but the the real...

    Inside the plastic guards, but the the real problem is the sheet metal shroud that the tips of the blades clear. There's not much clearance there, and ice firms around it. I don't know if it...
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    Fan shrouds icing, taking out fans.

    I got an account that's a distributor of dairy products. It only has two isolated, small office areas that have comfort heating/cooling, and then a bunch of unconditioned warehouse space. Scattered...
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    It makes sense that I never had problems with the...

    It makes sense that I never had problems with the cutting tip, since, as you say, it's O2 rich. So for the rosebud, do you think my idea of using an adapter for a B tank will work? It adapts a B...
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    Thanks! I was tempted to return the 17-30, but...

    Thanks! I was tempted to return the 17-30, but instead ordered the adaptor for B to MC, and I'll just lug the bigger B tank for bigger pipe when the rosebud is needed.
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    Rosebud tips for MC/R

    So I have a Uniweld MC & R tank oxy/actylene set, and being a commercial tech, often find myself brazing 2" plus copper. I've had the Uniweld 17-15 rosebud for several years, but almost from the...
  16. Thread: Knee pads

    by jw-lu597
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    X2. The double front carhartt dungarees are one...

    X2. The double front carhartt dungarees are one of the few still made in the USA, and the foam inserts that go in them are as well. You don't really even notice they're in there until you kneel.
  17. I'm interested to see how this all turns out. ...

    I'm interested to see how this all turns out. The fact that it's only one circuit of four makes it hard to believe it's caused by something common to all circuits, but I think we need the OP to give...
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    I see what you guys are saying, but my Veto LC...

    I see what you guys are saying, but my Veto LC weighs almost as much empty as my response bag does with tools in it. And I don't climb ladders with tool bags -- backpack or otherwise -- I rope them...
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    I'm gonna chime in here and agree with a few of...

    I'm gonna chime in here and agree with a few of these guys. If you REALLY want the big backpack style bag, and you know day in day out what tools you'll need, what type of equipment you'll work on,...
  20. I would also assume that these units run year...

    I would also assume that these units run year round, as they're for a data center. The OP looks to be from San Diego -- not exactly known for its icy winters, but with four circuits to a condenser,...
  21. Just revisited the thread -- it's not a pumpdown,...

    Just revisited the thread -- it's not a pumpdown, just isolation. I think you have got to have non-condensibles somehow. In other words, is this system only getting the flashing when all circuits...
  22. So does this system pump down, or is the solenoid...

    So does this system pump down, or is the solenoid just there to hold back on the off cycle? If it is a pump down, what does the sight glass look like as it's pumping down? I wouldn't think you'd...
  23. I only have experience with Digi Cool, and,...

    I only have experience with Digi Cool, and, unfortunately, the future of Digi Cool is murky, and they're generally considered the best incarnation of digitals for the service man. If you can afford...
  24. X2. I was late to hop on the digital train...

    X2. I was late to hop on the digital train myself. Did so 5 years ago, and am a much better tech for it. I use my AK900 on EVERYTHING, from low temp and mid temp refrigeration, to comfort and...
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    Good luck Doug, and get yourself well. Thanks...

    Good luck Doug, and get yourself well. Thanks for making a great product and backing it with great support. If that wireless DRSA of yours comes to fruition, I will no doubt continue to be a...
  26. My problem is having somewhere to even secure a...

    My problem is having somewhere to even secure a ladder half the time, particularly on parapet roofs. Running 50' of rope to the nearest RTU curb or stink pipe isn't exactly "secure." Being in...
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    Are they the DigiCool brand, and are there any...

    Are they the DigiCool brand, and are there any more?
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    This is probably true. I also have an HS36, and...

    This is probably true. I also have an HS36, and it reads fairly quick, but not as quick as an inrush would, I assume. I do notice with the HS36 that many motors do show high current for a split...
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    Duly noted. Aaaah, that's pretty slick. I...

    Duly noted.

    Aaaah, that's pretty slick. I assume the reason for the lower amp draw reading once the kit is on isn't because the inrush isn't actually lower, but because the compressor is starting...
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    Again, I see what you're saying, but there's no...

    Again, I see what you're saying, but there's no way to "always be clear of the start cap" when working on this stuff. That's exactly why I use amp draw to check, instead of a voltmeter directly on...
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    I see what you're saying, but when doing this,...

    I see what you're saying, but when doing this, I'm on the potential relay, not the start capacitor, after the compressor already starts. If my amp draw is high, then I know the contacts aren't...
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    I'll add to the list of books "The Lost Art of...

    I'll add to the list of books "The Lost Art of Steam Heating" by Dan Holohan. Granted, it starts out a lot with the residential market, but further in, really gets into the nitty gritty of how steam...
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    I see. That makes sense, I'll have to try that. ...

    I see. That makes sense, I'll have to try that. On a potential, I always just ohm'd out the NC contacts 1 and 2, and then once the compressor started, used regular amp draw to be sure that it was...
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    I'm not a "seasoned" or "old" vet, but I have...

    I'm not a "seasoned" or "old" vet, but I have been in the Chicago heavy commercial market for about 6 years now and am also an admitted tool freak. Are you going to be doing any Refrigeration or...
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    I have not seen these, but I do see a lot of...

    I have not seen these, but I do see a lot of other weird crap (and cheap crap) come in new units, including oddball 27" filters and even some in 1/4" or 1/8" sizes. I usually find a way to change...
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    Interesting. How so? I don't really mess with...

    Interesting. How so? I don't really mess with single phase compressors much anymore, but this seems like a good thing to understand.
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    Inrush current for HVAC applications

    I just recently purchased a Fluke that has the inrush measurement capability, and although it wasn't necessarily the highest selling point for me, if I can use it to aid my troubleshooting, I'm all...
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    Frickin' outstanding. Now that's professional. ...

    Frickin' outstanding. Now that's professional. The accuracy bug has really bit me of late, and it's cost me in the wallet big time, but it's also rejuvenated that sense of accomplishment when a...
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    So I pulled the trigger on a used, but fully...

    So I pulled the trigger on a used, but fully functional SRH77 on ebay. It's missing the humidity probe, but has one temp contact probe, which is why it was so cheap. I actually also found two of...
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    Thanks! I may take you up on one of those. ...

    Thanks! I may take you up on one of those. Actually, now that I'm looking into it, it looks like the 3rd jack on the SRH77A can be used for temperature or humidity, so I may go that route since I...
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    Cooper SH66 or SH77

    I've been on a bit of a tool-buying trip lately, and have been thinking about adding a Cooper thermistor box to my arsenal, as I have a ton of thermocouples that I just don't want to use anymore. I...
  42. Yeah, I talked to someone at Fluke yesterday and...

    Yeah, I talked to someone at Fluke yesterday and he said they recently addressed and corrected this, and the reviews on the Fluke website reflect this. He said in our field he still recommended the...
  43. Well I just ordered the Fluke 376 FC, and...

    Well I just ordered the Fluke 376 FC, and upgraded the test leads to the 175E twist lock, and the associated screw on alligator clips. This combined with my HS36 should give me plenty of capability....
  44. I'm thinking about pulling the trigger on the...

    I'm thinking about pulling the trigger on the Fluke 381,as long as they got that battery drain thing addressed and corrected. I will just use my HS36 like a DMM supplement for its resistance range...
  45. Also, checking a compressor in a rooftop with the...

    Also, checking a compressor in a rooftop with the condenser panel on, which gives proper amp draw/pressures, and also keeps you protected from those pesky condenser fans that they like to put RIGHT...
  46. The highest range of resistance on the 902 is 60k...

    The highest range of resistance on the 902 is 60k ohms. That's not high enough for service, in my opinion.

    As for the 600 series Vin, you appear to be correct, as long as the amp clamp doesn't...
  47. THIS. All of this is exactly how I feel. Love...

    THIS. All of this is exactly how I feel. Love my HS36, but it sucks I may have to supplement with a 2nd meter just for amp draw. I don't know why a manufacturer hasn't been able to produce the end...
  48. The SC260 looks like a good meter. Maybe it...

    The SC260 looks like a good meter. Maybe it doesn't have the inaccuracy my HS36 has since the amp clamp is part of the meter body. I'd love to do a side-by-side comparison on a big 3 phase motor...
  49. I think "everyone" is just me. Read a couple...

    I think "everyone" is just me. Read a couple pages back in this very thread for detail, but the amp clamp on the HS36 is inaccurate. I can't speak for the other models of Fieldpiece, but my HS36...
  50. Agree with this 100%. I have a couple Fluke...

    Agree with this 100%. I have a couple Fluke tools, and a lot of Fieldpiece. Fluke is probably a little better quality, but being on my 2nd Fieldpiece HS36 in 10 years, I have found them to be 100%...
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