Need a wiring diagram for a GE 5KC49WG1181 motor

[nathand]

I have a 1982 vintage 5KC49WG1181 10 amp 230 motor that powers a home elevator. Today, it started smoking, and the motor is out of production. I'd like to replace it with something new, but since I don't know how it's wired, I'm unable to identify what will work. Does anyone know where I can get a wiring diagram for it? It has 5 wires coming out of it. The specs are shown in the attached photo.
Thanks for your help.

 

[waross]

This is a forum for electrical professionals.
If you need a diagram for that motor, you may not be a professional.
But I'll give you the benefit of the doubt.
It will have a capacitor:
Has the capacitor failed, either shorted or open?
If it has, replace it.
It will have a starting switch.
When the motor is at rest, the centrifugal switch points should be closed.
If they are open they may be dirty or they may be defective.
If they are dirty, clean them.
The centrifugal mechanism may be defective.
Check it for smooth operation.
The centrifugal switch may not be opening at working speed.
If the switch has problems, fix it or replace it.
Disclaimer:
You haven't given us a picture of the complete motor.
You haven't told us if the motor turns properly, turns slowly, or just sits there and hums.
Have you checked the motor and the driven mechanism for mechanical binding?
If the motor is humming it may have forgotten the words.
The words that it may have forgotten are;
"Turn me off and fix me before I die!"


Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[Bill West]

More than are you an electrical professional, if you are a general electrician or just the home owner and not an elevator professional then don't touch it, call an elevator service. Otherwise you may need a different kind of professional, the one that wears a somber suit. I used to read the safety column in an elevator trade magazine, it wasn't funny.

Bill

 

[nathand]

After the contactors in the main elevator panel burned out a couple of weeks ago, I figured that the 5KC49WG1181 motor may be pulling too much current and causing the contactors to burn out. So I installed a new contactor, and last week, also overhauled the motor as a prevention measure. When I opened the motor, the switch contacts looked pretty clean, and so did the capacitor. But while it was apart, I went ahead and replaced the capacitor and bearings. A replacement switch is no longer available or I would have replaced it too. Everything worked well until today. I think that either one of the elevator "call" buttons shorted out or an interlock switch shorted, because the motor started humming (not turning) when I pressed the 4th story call button. I ran down to the elevator control room as fast as possible, but the motor was already starting to smoke a little when I shut off the safety switch. I let it cool down for two hours, and then restarted it--it started back up immediately and seems to be working OK for all the other floors. However, I'm leery about keeping a motor that old that has overheated. Today, I found a MARATHON MOTOR Item 46N394, model 056C17D5347, with nearly identical specs, but the wiring schematic for it shows 6 wires while my existing motor has 5 wires. That's why I need a wiring diagram for a 5KC49WG1181. It's hard to figure out how to wire a new motor correctly when I don't have the schematic for the 5KC49WG1181.
Thanks for your insights.

 

[edison123]

I would listen to Bill... No, the other one.

Muthu

http://www.edison.co.in

 

[nathand]

I work with an elevator technician every day. Anyone can replace parts and motors so long as the parts are still in production. But it takes something extra to find a replacement when the motor or other part is no longer in production. With older systems, that is frequently the issue, and it is certainly the issue with this particular system. Very few of the parts are still in production, and the original company isn't concerned about replacing older parts so much as selling something new. We do our best to keep the old stuff working. On a lot of these older systems, the manufacturer doesn't even keep complete records. And in this case, the manufacturer wiring diagrams are at a higher level than we need.

 

[waross]

Does this motor drive a hydraulic pump or does it drive mechanical mechanism?
Does the motor reverse?

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[nathand]

The motor drives a dual drum mechanical cable lift, and yes, it also reverses.

 

[waross]

All the information that you need is contained on the nameplate of the new motor and in the physical wiring of the contactor.
Really, we like to help but in this case, hire a professional.
What I am trying to say, based on this information:

After the contactors in the main elevator panel burned out a couple of weeks ago

the motor started humming (not turning) when I pressed the 4th story call button

Hire a professional!
A professional would have check to see why the contactor failed.
The type of contact failure is sometimes a clue to the reason.
Age and general wear or some recent event causing excess current and rapid failure.
A shorted turn in a brake coil will progress to more shorted turns and a rapid rise in current.
A professional would see evidence of this.
A multi story elevator is a life safety issue.
That is why the manufacturer's website just lists contact info for approved repair firms instead of diagrams or trouble shooting instructions.
By the way, I may have misspoken in a previous post.
When the motor was humming the words that it was looking for were:
"Hire a professional!"

Bill
--------------------
"Why not the best?"
Jimmy Carter