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Mr.Chad,As i understand that your above quote and i had problem with same that i replaced new rewound stator but compressor not getting start giving humming noise. i could not understand what went to wroung. it's rewindding problem or.. can advise me plz,

Bitzer Compressor

I havent looked into it but I replaced a seal shaft from a motor to the compressor... What would be my steps to align it... I know it has to be percise or else!!!???

Wrong again,
Bitzer manufactures compressors for A/C,med, low & ultra low applications. His post was on the CS series of compressors. That is a compact design used on A/C or med temp, so HE posted in the correct forum. Good TRY.Are you the guy selling BTU's (Brooklyn thermal Units) ,can I buy some......

Originally Posted by Overtime487

Hey,
There should be no need to remove the center bolt on the male rotor to remove the rotor.The stator is the only parts that needs to be removed unless it is heavilly damaged due to arc splatter. Once upon a time Bitzer(located in Oakwood,Ga) had a pair of machined rods that would aid in the alignment of removing/installation of the stator. There is a metric allen bolt that holds a key inside the compressor near the terminal plate. It can be a real trick to remove the stator due to its close machining. If it cocks in the housing it can be a bear to get unstuck. Also, once the stator is removed rotate the male rotor shaft to ensure that a mechanical failure didnt cause the motor to fail. Bitzer used to send out Rewound stators with all the gaskets needed for the repair.

Isn't Bitzer a German company and are they not used in refrigeration so wouldn't this post really be in the wrong site and Overtime487 I get the overtime but the 487 I don't get do care to explain it's not your birthday is it

Hey,
There should be no need to remove the center bolt on the male rotor to remove the rotor.The stator is the only parts that needs to be removed unless it is heavilly damaged due to arc splatter. Once upon a time Bitzer(located in Oakwood,Ga) had a pair of machined rods that would aid in the alignment of removing/installation of the stator. There is a metric allen bolt that holds a key inside the compressor near the terminal plate. It can be a real trick to remove the stator due to its close machining. If it cocks in the housing it can be a bear to get unstuck. Also, once the stator is removed rotate the male rotor shaft to ensure that a mechanical failure didnt cause the motor to fail. Bitzer used to send out Rewound stators with all the gaskets needed for the repair.

Hey T,

I saw that one where somebody jumped in the middle of you a couple of weeks ago. You handled that very well, by the way ("As a matter of fact, I do overhaul compressors all day.....") . I thought in retrospect that maybe I was a little abrupt with the original answer, but it's hard to get voice inflection into an internet post. The guy asking the question needs to stop and think about what he asked, and a lot of times they don't. But the bottom line is exactly what you just said - there are some things better left alone if no one is there that knows how already.

Klove,
I see that I am not the only one getting beat up on this forume.

These people come on here asking questions that makes it clear that they should just.

"Step away from the centravac"

If you are not working for a company that has the resources to provide this sort of information you don't need to be there is the first place.

Originally Posted by moideen

Very thanks to Chad. Usually I am overhauling the reciprocating compressor.but still didn’t get chance to remove stator from screw compressor. thats why I posted my doubt. Then chad replayed professionally.anothor member klove replayed very unprofessional.
Anyway again thanks to chad

moideen

Friend, your profile says absolutely NOTHING about you or your experience level. Based on the information you gave, I gave you the best and safest advice that I could give. I've pulled quite a few stators in my life. If you have to ask for advice on an internet forum how to accomplish a task such as that, it is probably best to let someone that knows how already either show you how, or do it for you. Either way, hope your repairs go well.

bitzer screw

Originally Posted by chad_nc

Reclaim the gas of course, and then on the motor side of the compressor take the end plate off. There will be a bolt holding the rotor in, take the bolt out, then pull the rotor out. Also pull the terminal strip block up, there will be six or eight hex bolts holding it down, then unwire the wires on the back of the block going to the stator. There is a bolt on the outside of the compressor holding the stator in place, remove this bolt and the stator slides right out. It is kinda heavy so be careful, but it is not near as hard as it sounds. The bitzer screws are the same as the copeland screws. The stator and rotor are field replaceable. You can get the material you need (gaskets and stator) from your local copeland dealer. Then put it back together the same way you took it apart. Good Luck!

Very thanks to Chad. Usually I am overhauling the reciprocating compressor.but still didn’t get chance to remove stator from screw compressor. thats why I posted my doubt. Then chad replayed professionally.anothor member klove replayed very unprofessional.
Anyway again thanks to chad

moideen

Reclaim the gas of course, and then on the motor side of the compressor take the end plate off. There will be a bolt holding the rotor in, take the bolt out, then pull the rotor out. Also pull the terminal strip block up, there will be six or eight hex bolts holding it down, then unwire the wires on the back of the block going to the stator. There is a bolt on the outside of the compressor holding the stator in place, remove this bolt and the stator slides right out. It is kinda heavy so be careful, but it is not near as hard as it sounds. The bitzer screws are the same as the copeland screws. The stator and rotor are field replaceable. You can get the material you need (gaskets and stator) from your local copeland dealer. Then put it back together the same way you took it apart. Good Luck!

Change the compressor, or take it out, and take it to a motor shop and let them do it.

Bitzer screw compressor

Hi friends,

I have a bitzer screw compressor.model:CSH7571.its winding is grounded. so I have to take out it for rewinding.can anybody help me,how to remove the stator.should I heat the compressor body?please hlp me.

Moideen-Dubai