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Contactor Part Fixing

01/23/2017 3:22 AM

I removed this part from the siemens 3TF47 contactor. Now I forget where to put it back, I do not have another contactor to compare. What is the purpose of this part? the manual does not mention about this part. If anybody have experience with this, Please help me.

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#1

Re: Contactor Part Fixing

01/23/2017 3:27 AM

Congratulations you are on the way to become an engineer. Dont worry where to put the part. Just learn from it for the next time to take notes when take apart something unknown. Maybe take pictures of the disassembly process.

Last but not least You must not use this part as in do not use this part in a live circuit.

Buy a new one and keep this as a reference, in memory of a steep learning curve.

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#2

Re: Contactor Part Fixing

01/23/2017 5:16 AM

e-mail, with pictures to Siemens??

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#3

Re: Contactor Part Fixing

01/23/2017 7:59 AM

Great find. Seimens ofcourse put it there with purpose.

Leftovers during a disassembly and reassemble is a sign that something supposed to be there with purpose and now is lacking. Seem like seconds to disaster kind of thing.

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#4

Re: Contactor Part Fixing

01/23/2017 8:07 AM

Take another Siemens 3TF47 contactor apart carefully noting the position of all components.

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#5

Re: Contactor Part Fixing

01/23/2017 8:19 AM

Elevator controllers has lots of these contactors. Hope its not a relevant issue of safety. Good luck! If so request new ones.

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#6

Re: Contactor Part Fixing

01/23/2017 8:35 AM

to Siemens.

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#7

Re: Contactor Part Fixing

01/23/2017 12:29 PM

You might check this web page for spare parts, and figure out how to put them back where they should have been left.

Siemens 3TF47 datasheet

scroll down to 2/14 page.

Good luck? Luck and hope are no part of electrical safety - you better be for knowing what the hell it is you are doing, or your career will be very short, as in shorted out.

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#8
In reply to #7

Re: Contactor Part Fixing

01/23/2017 12:36 PM

"Good luck? Luck and hope are no part of electrical safety - you better be for knowing what the hell it is you are doing, or your career will be very short, as in shorted out."

Wise words and a GA

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#9
In reply to #8

Re: Contactor Part Fixing

01/23/2017 1:12 PM

TY. Electrons are indeed "short" tempered.

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#10

Re: Contactor Part Fixing

01/23/2017 3:43 PM

3TF47 contactors have been out of production for going on 20 years now, you will not get any help from Siemens, they will simply tell you to replace it. They were very inexpensive contactors, you can replace them with another inexpensive contactor. You have likely already wasted more time that they are worth and spending any more time is only making it worse, unless you put zero value on your time.

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#11
In reply to #10

Re: Contactor Part Fixing

01/23/2017 4:22 PM

"unless you put zero value on your time." -- correction: unless you put zero value on your life."

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#12

Re: Contactor Part Fixing

01/23/2017 11:11 PM

They do look like contact elements, though your pics are quite small.

On THIS Siemens contactor spare parts supplier page you may be able to recognize the identical matching part:

http://www.aesupply.com/product_details.php?manufacturer=Siemens

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#13

Re: Contactor Part Fixing

01/23/2017 11:51 PM

It is quite common for equipment manufacturers to put extra items in the same box that a device is shipped in.

Often these extra parts are not listed on the packing list or the instructions sheet.

The manufacturer leaves the decision to use the mysterious parts with the end user while making a claim that the purchaser releases liability for improper installations or uses.

Most of the time these, " extra " parts find their way into a , " junk drawer " to be used on another repair where a part on a part list has been mysteriously left out of the supplied parts bag.

Then of course there is the case of where upon opening a device, a part falls out. How the device was operating normally is anyone's guess and when the repair technician subsequently reintroduces the part back into the device that device can and will fail sometimes catastrophically and will void any expressed or implied warranty.

This in turn leaves the repair technician with a formally malfunctioning assembly now a non-functional one. In an attempt to repair the device the serviceman is told that the part is obsolete and there is a new replacement device available but it's configuration is not compatible with the rest of the assembly and so the customer is forced to buy a whole new control system.

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#14

Re: Contactor Part Fixing

01/24/2017 1:35 AM

Hello All,
After some research I came to know that the part shown in the photograph is the interlock between contactor switching and the arch chamber (safety). When the arc chamber is removed the contactor will not operate. Trying to fix it now.

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#15

Re: Contactor Part Fixing

01/24/2017 4:24 PM

130: Anti-vibration ring

Or:

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#16
In reply to #15

Re: Contactor Part Fixing

01/25/2017 11:04 AM

No, that shading coil would be embedded into the armature pole face. If broken out or missing the contactor would still function, but would vibrate severely.

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