Carrier 17MA compessor teardown literature

[goscottogo]

Anyone have service/overhaul literature for a Carrier17MA size 40 compressor? I already have the O&M's and the Contact Seal literature.

[jsherhvac]

I have qite a bit of literature, all from carrier.com which you probably already have. If you have any questions I could probably help. I have done 2 17ma40 rebuilds & probably 10-15 17s30 rebuilds over the years. Up until recently had an account with 4-17s30 process chillers & 1-17ma40 glycol chiller. Let me know if I can help.

[goscottogo]

The problem I have is the shaft position within the compressor housing. During the shaft seal renewal, I took the measurement between the shaft shoulder and the housing. It is not within the Carrier spec. I have heard about a shaft positioning proceedure that involves shims in the thrust assembly that can adjust shaft position and not effect the thrust clearance (current thrust clearance is ideal). However, this proceedure was for a 17M-30. Would you have literature or further input on this issue.

[jsherhvac]

There is a spacer on the thrust end that can be machined to get your shaft shoulder to casing measurment correct. Did you have to replace the rotor assembley, if so your new rotor is probably a little different from the old one. If the rotor was not replaced then you shouldn't have to make any adjustments to this spacer, maybe there is another problem. This spacer will be located between journal bearings and thrust disc. Figuring out whether to machine spacer or get a thicker on can be a bit tricky at first, to the best of memory, the thinner the spacer the closer the shaft shoulder will be to the thrust end, and right the opposite for thicker. I have a sketch drawn in my folder, you can also compare two different spacers just to be on the safe side. How far out of tolerance is your measurements? How are you taking your measurements, straight edge and machinist rule. I have some literature on setting the shaft shoulder position, I will email it to you tomorrow, you can get back to me if you have any questions.

[goscottogo]

This compressor/chiller was converted to 134a several years ago by another contractor. There are no records as to what was changed during the conversion, so I do not know if the rotor was replaced. the original start-up date was in 1988. For the shaft positioning, the rotor was placed in the running thrust position and a straight-edge (across the compressor housing) and a dial caliper was used to take the measurements. Carrier spec is 1.375" +/- .005. Current position is 1.353".

[jsherhvac]

Just wondering, have there been any seal problems with the machine. The email is on the way, sorry its taking so long to get back to you, these 12-14hr. days are begining to wear on me.

[goscottogo]

Yes. Half of the charge has been lost in a short amount of time. There are other insignificant leaks on the chiller that are in the process of being repaired. Renewing the Contact seal was the initial goal. The rotor positioning is the curve ball in the game. Do you think .022" out on rotor position could affect the Contact seal spring-to-carbon-to-collar requirements?

[jsherhvac]

Yes. Half of the charge has been lost in a short amount of time. There are other insignificant leaks on the chiller that are in the process of being repaired. Renewing the Contact seal was the initial goal. The rotor positioning is the curve ball in the game. Do you think .022" out on rotor position could affect the Contact seal spring-to-carbon-to-collar requirements?

The shaft shoulder measurement has everything to do with the contact seal. In other words thats the main reason for this measurment.

[jsherhvac]

Been trying to send email for 20 minutes now, my outlook is not working.

[yorktek37]

you would not happen to have one for the 19dh536 would you?

[jsherhvac]

you would not happen to have one for the 19dh536 would you?

If you were talking to me, no I do not have any 19DH literature. Try carrier.com more than likely the literature is there just tough to find on thier site sometimes.

[heavymetaldad]

you would not happen to have one for the 19dh536 would you?

what are you looking for?