Carrier 19dk chiller

[Relaygirl]

Can anyone help me find a Carrier 19DK Chiller Tear down guide?

[mesahvac]

your a new member and your asking for a teardown manual on this site your in for it!:D there gonna eat you alive:)

[Relaygirl]

I was on this site most of the afternoon yesterday. It is a variety of personalities. It seemed like there were alot people out there helping each other and then some whiners.
I'm not a tech, I'm just a service manager trying to get some help for one of my tech's. I would have taken whatever you had to hand out for alittle help.

[Coolmaniac]

Being new to the site doesn't necessarily mean new to the industry. Some might forget that.

I went through the first half of their course, when offered on the west coast but didn't get one. Have you gone to the source? I'd guess it might be kinda big for an e-mail. But if someone here does, I'm sure they'd be glad to help.:D
I'll ask in the pro section for you.

[Relaygirl]

Thank you. We don't work on many chillers and my tech has done a few tear downs, but it was quite awhile ago. I have been on every websight I could find. I have found bits and pieces only. I have even called a few other companies that I know have much more experience with this. Most of there tech's do them so often that they don't need the manual anymore. So they are all digging in the archives for me. We are doing this job next week, so any help would be appreciated.

[freonrick]

Do you have a low pressure recovery machine?
Do you have dial indicator, mics and so on?
If you dont normally do this are you properly set up with rigging equipment?
You need to send your guys to school to learn how to do this.

[Relaygirl]

I have all the tools, equipment and rigging set up. My techs sometimes laugh at me cause they are all seasoned techs and I'm the new kid on the block. I do beg, borrow and sell my soul for them, as I am doing now. I have every confidence that they can do this job. I'm just trying to get every piece of info for them and I myself get to learn as much as I can. They do go to courses all the time. We don't have much call for this. Off the top of my head I think we only have two maybe three customers that we maintain, Punch tubes and etc for chillers.

[referteacher]

Have your techs. torn down a 19D series Carrier before? 19D through 19DK pretty much are all the same idea. Once you've done some, you should be able to do the others with the drawing and tolerances given in the I.O.M. for that machine. ( with the exception of 19DM):eek: The I.O.M. manuals are down loadable from Carrier.com. literature. If they have never done a 19D series, they really need to work with a mechanic with experience. Just too many little tricks that aren't covered in the manuals. Especially setting the spacing between the "wheel" and shroud. Too much gap, you loose "lift". Too tight and the "wheel" rubs and you got a melt down on your hands.:eek::eek:

(Sounds like maybe your techs. are playing with you a little??????););)

[Relaygirl]

Yes my techs have done this before, as I said before it was many years ago. I got the I.O.M manual. I called Carrier training center today. Hopefully the teacher will confirm that my tech's went to the class and sends me what I need. As for the techs playing with me, that happens all the time. What goes around comes around. We have alot of fun. So if anyone out there has a tear down manual I'd be happy if someone electronically emailed me. Just covering all my bases. And thanx to all who helped me here.

[DITAW]

I have the wheel spacing procedure if you need it.

[chillermonkey]

Can anyone help me find a Carrier 19DK Chiller Tear down guide?

No offense, but if you or your co-workers have never performed, never helped or never watched even, a 19DK compressor overhaul, you have no business convincing or charging the customer for expert services. At the very least, you could use the "tear down guide", successfully disassemble and reassemble the machine, push the button and watch it self-destruct. At the very worst, you could improperly rig (not all is covered in the "tear down guide") the compressor and drop it on an appendage. I've twice seen novice tech's slide-back the comp-motor assembly without supporting the back or removing the stator. Once clear of the housing it flipped backwards. I've seen people install the gearset backwards on the shafts (they will fit and they will run that way....... for a while). Which way do you turn that impellar retaining nut anyway? "I only heated the impellar a little, I don't know why it cracked." Hope this helps.:confused:

[DITAW]

Not to send a message of discouragement but i recently did a teardown on a 19xl because the people that just did it before me screwed up the impeller spacing to the shroud and it wiped the impeller, and the people that did it were seasoned trane vets that only work on trane chillers but are no strangers to doing overhauls. I'm not trying to bad mouth your men, just want to let you know that if your not 100% sure then you might wanna walk away before you cost yourself money and aggravation. In the mean time ill scan that procedure into my computer if you want it.

[DITAW]

Just out of curiosity what is the reason for the teardown?

[Relaygirl]

I would appreciate if you would email the wheel spacing procedure. Just to clarify, my techs have done this before and have gone to school. Its just been awhile. I have complete confidence in them. This company has been in business for 32 years and most of my guys have been there 15 to 20 years. Believe me, I have no intention of being the Walmart greeter any time soon and I know they won't put themselves in the position of becoming parts delivery boys. I'm surprised none of you offered to come and help. I just wanted a tear-down manual cause they can't find theirs and it seems like everyone I ask can't find one either. We all know how tech's are with their paperwork!!!!!!!!!!!!!!
Gotta love em. I'll look forward to your email Ditaw. Thanx

[cheelr]

Carrier mechanics never really used one, just the service manual that has the clearances listed. For the impeller clearance part that others are issuing dire warnings about, we used to lay or hold a big machinist straight edge across the volute (carrier speak) or discharge scroll (york speak) and measure with a depth mic to the motor end face of the wheel propped up or laying flat in the volute, then using the straight edge check the spacing from the impeller face of the high speed assy with it bolted in place in the compressor housing (rotor support in york speak) to the v-band flange face on the compressor housing that mates up to the volute where you just took the other measurement from. The difference in these two measurements is the thickness of shims you'd put behind the wheel if you wanted to test the overloads and/or do a little field impeller machining at start-up. Can't remember what Carrier specified for clearance in there, I'd make it about .050" if I couldn't find the book and had to just guess. In all honesty I never saw the point in doing the check anyway if you weren't replacing the wheel, high speed assy, or the big cast pieces, there are no wear items to effect the clearance enough to have to adjust for. The thing was worth the most it ever will be when they loaded it on the truck in shangra la behind Thompson Road 1 20 years ago right? Should be good enough now for any el cheapo outfit that's still running it I'd say. If you plan on buying/selling a new high speed assy, or wheel for this thing because it crashed as part of your job, your back must be up against the wall - sell them a new chiller already. Like the other guy I'm interested in why you're taking the thing apart at all. Did your customer believe the carrier rep that told him it should be done and just gave you a crack at it 'cause you were cheaper or he was already dealing with you? I only would take one of these apart to change the v-band o-rings if they were actually leaking, and even then there's no need to get into the bull/pinion/thrust assy, but your top shelf mechanics and you know this of course since you manage them brushing the tubes at 2 or 3 chiller accounts every year. Sorry couldn't resist. You'll be fine.

[superandy]

http://www.xpedio.carrier.com/idc/groups/public/documents/bulletin/CA-SB-19-D-65-28.pdf

[Relaygirl]

Thanx for the email Andy. I got my tear-down manual from another source I tried. I believe we are doing this next week. I'll let you all know how it went. By the way a personal friend of mine who does this all the time is flying in to give a hand. So next week will be business and fun.
Who's got it better than me? I Love my job. This is a great field to work in. Everyone is always willing to give a helping hand. All tidbits still appreciated. Thanx again all.

[Dan Schultheis]

Hello Relay Girl,

Where did you get it and can I get a copy? These things are like the Holy Grail?

[superandy]

So, how is the teardown going?

[chillrdude]

So, how is the teardown going?

Better yet how about some pics.

[heavymetaldad]

should be well into reassemby by now

[chiller mekanik]

Relaygirl,

Been a way (working) for a while, read this thread & thought I would give my two cents.

As with any teardown, I would want to have a propoer risk assessment report that included eddy current, meg readings over time, condition of tube sheets, etc.

We have several 19DK machines (even a few DGs, DHs & of course the infamous DM) under our care & I would have no reservations taking any of them to the floor. It just needs to be a well thought out decision.

As far as a teardown manual for a DK, I don't know of one unless someone independent made one. If the Big Oval ever made one, I think it would be called a "Stop Major" anyway.

On another note, as a service manager myself, I've learned that when a mechanic says he is capable of something but it has been a while, sometimes it means he doesn't want to admit its something he may not be able to do & hopes that the disclaimer will serve as an out in event something doesn't go right. So, beware when you hear those words.

Once in a while, (like 1 out of 10) the mechanic making that statement is just being candid & he is completely capable of the task at hand. When in doubt, I always put forth several specific questions that would require true experience to get the correct answers. This only works if you have done the teardowns yourself. The other method may be to ask for specific locations, model numbers, teardown notes, tools, pictures, etc. You can never be too careful.

I admire the wisdom in flying someone in that has done the job before. For the record, if I can be of any assistance, let me know. My e-mail is also listed in my profile.