Electric Motors/Leland Motor
Just read your write-up on the Leland motor. I have a similar motor if not the same, Ref # 14052 KN 8059. It has the same characteristics as the other gentleman's.
What is happening; the elevator at the extremes of up and down, will not start. If I go down to the motor and turn the armature very little it starts immediately and runs till the end perfectly. I do see arcing through the air holes while running.
Mike at IECONY elevator in NJ said the brushes were worn and they can not be had.
So can you get me a new set of brushes to save this otherwise great motor?
Let me know,
NEal, iT LIKELY IS THE BRUSHES, however, it is also likely the brush springs have lost tension, and the face of the commutator is in need of dressing, as it is probably worn and grooved,
Here is a ton of information, if you can source some parts, great if you want to try taking it apart and sending me some photos I can try and give you a better idea, of what is likely wrong, but there is about all my Leland references and advise below, you never know, an ad in a forum like smokstak or somewhere might produce some parts, either way you want to go let me know if you get stuck and if so I can help guide you
If you get new brushes which you can, it might help for a while, but it depends on the spring pressures, and the surface of the comm that the brushes ride on,
You could try a new set of brushes [probably won't be cheap as there is a minimum order so you might have to buy 3 sets to make minimum]
Have you had it to a local motor shop? You might try sourcing parts by the manufacturer of the elevator last LONG LINK
It is possible the only problem is dust and contaminates in the holders locking the brushes but with the arcing it is again likely there are other issues,
If you want to take good photos and mark the parts so I can get a look at the interior of the motor, I might be able to tell you more, if you want to send me some photos, just mark the parts with a small drill not a marker that rubs off,
Take photos as you go, and maybe we can see how bad things are or ARE NOT !!!!!!!!
You can try here for brushes and springs [I have used them in the past but a LONG time ago as I recall] normally I just send a sample to Helwig Carbon Brush
Also you can try Eurton Electric motors, [I have used them for parts and actually small tiny armature rewinds very good ] Eurton below
Helwig Carbon [This is where most get all industrial brushes IF they have this Leland in their database they may have them but most likely you will need to send samples and also a sample of the brush holders and or springs]
This will be the most reliable but costly option
Then you really need to have someone take a look at the commutator, if this is an elevator with passenger[s] you want to make sure there is little chance of something going wrong or jerking a person off, or if a freight or dumb waiter then dropping something is a hazard,
I would try to find a reliable motor shop, and let them see what they can do or will do,
The motors are COOL and OLD and sometimes valuable, but it just depends, as the model is probably a part number for the elevator not a LELAND MOTOR MODEL off the shelf number
So it is complex issue, without seeing it I cannot give you probabilities of what needs to be replaced, but if it works then it wont start your buddy is probably correct but good brushes with bad springs doesnt help it might just because the new brushes will be taller and less worn but over time and maybe a short time, it will go back to sticking and not starting,
Now here is another option, if the elevator is a stair lift maybe a new stair lift is in order,
It has been arcing so that means it has some damage how much ???
Are there external limit switches and or mechanical switches?
Does this motor go right into a gearbox?
Is the shaft straight or tapered or splined?
If you could find a small motor that would fit all the logistical issues you could use a small three phase motor, with single phase in three phase out phase convertor,
These are amazing devices VFDS variable frequency drives, and they convert single to three phase with reversing, overload ramp speed, decel speeds braking, everything in one controller,
Im going to guess a half horse or less, [I get a lot of questions hard to remember particular motor question]
If so you can probably buy the three phase motor, and VFD drive for about the cost of one repulsion induction or other single phase motor with a ton of low end torque most work better than DC but the retrofit reverse engineering is what I dont know if it is going to be a huge deal to get a standard motor in place and then interface the controls,
If you can you will have a motor and drive that will outlast the structure,
This is a good place to start remember the drive is only complicated if someone does not study the manual, the V TECh drives have around 46 user programmable settings, way past speed and braking and reversing and ramp up ramp down, it has overload protection for the motor built in, can be used with analog and digital inputs it is really very simple for all you can do with one, if the motor is so obsolete, either a new elevator or figure out how to reverse engineer in a new drive and three phase motor,
But leave this for last, get an opinion at a motor shop, if they will work on it, many wont work with single phase anymore, but they may give you a honest evaluation if the comm is burned badly and not to waste money on brushes, so on,
Leland repulsion induction motor, Type RD, 1/2 hp,FR. 4c66z, 230 v., Duty 1/2hr, 8.8 amp,1725 rpm, PH 1, CY 60,Ref.14052 PU 4777
If it is close to this one, the frame 66 can be dealt with the z after the frame size 66Z means it is special somehow, spline, wood key, a dozen mods, possible and there might be another used one out there but then you risk a used motor with as many issues as yours,
also try surplusrecord.com
then if they have anything close it would be