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Originally Posted by
Nuclrchiller
I've never seen that bearing bracket removed while the motor is still mounted to the discharge volute. Do you plan to replace the motor-to-volute o-ring? How about the discharge volute-to-condensor o-ring? Appreciate the pics. Very nice equipment room... once you get past the chilled water lines above the starter.
It is a lot easier to do that front bearing bracket with the thrust bearings removed, or at the very least, with the thrust bearing support removed. It is even easier still to do it all with the motor sitting on a cart on the ground.
It is a nice, well lit mechanical room with a lot of clearance and room to work without interference. The guys and gals at this site work very hard to keep everything in good order.
The key to happiness is lower expectations.
Don't pick the fly crap out of the pepper.
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Thanks for sharing looks fun.
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Originally Posted by
Tech Rob
Thanks! My motto is "fake it until you make it"!!!
Lol., cant fake that that too much., good job rob!!
Rob for president ,,
no signature

blast'em man blast'em
!!!KILL THE TERRORIST!!!
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So do u use a second chain fall for the shaft to pull the bearing off,(I am assuming)
To pull off the seal (journal) I only see one.
no signature

blast'em man blast'em
!!!KILL THE TERRORIST!!!
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Originally Posted by
milkyway
Lol., cant fake that that too much., good job rob!!
Rob for president ,,


Originally Posted by
milkyway
So do u use a second chain fall for the shaft to pull the bearing off,(I am assuming)
To pull off the seal (journal) I only see one.
Yes. First chain is to lift the shaft enough so you can remove the bearing support. Once you get it out far enough, you put the dial back on the shaft and put a chain behind the bearing support. Transferring the weight of the shaft from one chain to the other is the trickiest part of the whole job.
The key to happiness is lower expectations.
Don't pick the fly crap out of the pepper.
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Very cool. Those of us DX guys dont get to see too many of these...disassembled anyway!
Any ideas as to the cause of bearing failure? Oil system blunder?
Thanks for sharing and keep em comin!
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And here's the view just outside the chiller plant door
The key to happiness is lower expectations.
Don't pick the fly crap out of the pepper.
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Hey Rob can you describe the "air run" with the suction elbow off that you mentioned in your other tear down thread? For those of us who dont know.
Im assuming it is not to check rotation.
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Sure! An "air run" is when you start the chiller while it is still disassembled to do a balance check and make sure none of the parts interfere with one another once the shaft starts spinning. The process only takes a few minutes. Most chillers have some safeties that need to be defeated before you can do this.
If you replace any part of the rotating assembly like the motor or impellers, you will need to have it balanced. Typically, if you re-use all of these parts, nothing needs to be changed as far as balance is concerned. It still must be checked, though. It's better to find out while it's all still disassembled, than to find out after it's re-assembled, evacuated, and charged.
The key to happiness is lower expectations.
Don't pick the fly crap out of the pepper.
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I gotcha. That makes sense.
So you are discharging atmosphere into the condenser? What happens to the motor current during the procedure?
Do you allow it to come up to speed or just bump the starter?
I would assume one wouldnt do this on a McQuay.
That would be scarier than Halloween!
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Originally Posted by
Tech Rob

And here's the view just outside the chiller plant door

Tampa?
Niiiiiice.
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Awsome pics. Love the work you do. Especially love the way you talk us through each pic. Thank you for sharing.
You need to put the phone down and get back to work!