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Welding mask and welder

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Re: Welding mask and welder

Postby 9fingers » 04 May 2021, 10:18

novocaine wrote: it's a rebadged Telwin and clarke used to sell the same machine with their name on, as did SIP and countless others.


Thats why I thought there would be a good change of picking up a used machine to raid for parts - possibly through the Mig forum

I bought a Portamig 180 about 12 years ago. Lovely machine. Only gets light use but handy to have around.
If I was buying now, I might look at inverter models if only on grounds of taking less space.

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Re: Welding mask and welder

Postby 9fingers » 04 May 2021, 10:38

Information on induction motors here
https://drive.google.com/file/d/1dBTVXx ... sp=sharing
Email:motors@minchin.org.uk
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 10:41

9fingers wrote:Just found this

https://www.weldequip.com/sealey-wirefeed-s.htm

Any good?

Bob

at 56 quid we are getting close to a 1/4 the price of a new machine.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 10:44

Dave, no worries, I’ll have a look at the various machines and comeback to you for advice and thoughts if that’s ok?
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Re: Welding mask and welder

Postby 9fingers » 04 May 2021, 10:44

novocaine wrote:
9fingers wrote:Just found this

https://www.weldequip.com/sealey-wirefeed-s.htm

Any good?

Bob

at 56 quid we are getting close to a 1/4 the price of a new machine.


Only the OP can assess the condition of the rest of the machine but 25% of new price to repair is possibly viable.

Bob
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 10:48

9fingers wrote:
novocaine wrote:
9fingers wrote:Just found this

https://www.weldequip.com/sealey-wirefeed-s.htm

Any good?

Bob

at 56 quid we are getting close to a 1/4 the price of a new machine.


Only the OP can assess the condition of the rest of the machine but 25% of new price to repair is possibly viable.

Bob


Yer ok. I was going with insurance right off figures for some reason. :lol:

with a bit of digging I'm sure we could find the specs on the motor (which to my eyes looks like a bog standard 12-24v jellybean motor), you'd have to heat the gear to remove it from the old one and press it on to the new shaft but I don't feel that would be to hard, if it costs a few quid to try it's only cost you a few quid rather than 56 of those British pounds.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 11:18

Sorry Dave and Bob,

Hadn’t seen the other replies, if can fix it for a few pounds or even £50 then that is a good thing so either a new motor or that motor assembly could be a goer. I don’t know what the Telwin base model is for my Einhell which could be a problem.

The photo looks pretty similar, I suppose the best way would be to contact weldequip and see what the say?
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 11:22

any chance of a photo of the PCB, hopefully the voltage can be figured out from that and we can get away with just a new motor.

if the drive looks the same as the one you have now, then it is the same. it's a fairly old upgrade to swap out from a bigger machine but it takes some thinking about as the PCB often can't drive the higher powered motor.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 11:38

novocaine wrote:any chance of a photo of the PCB, hopefully the voltage can be figured out from that and we can get away with just a new motor.

if the drive looks the same as the one you have now, then it is the same. it's a fairly old upgrade to swap out from a bigger machine but it takes some thinking about as the PCB often can't drive the higher powered motor.


Will pop down at lunch and take some more photos
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 13:09

if we can work out the voltage I reckon something like this will be fine.
https://uk.rs-online.com/web/p/dc-motors/2389737/

don't suppose you've got a multimeter handy have you?
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 13:32

novocaine wrote:if we can work out the voltage I reckon something like this will be fine.
https://uk.rs-online.com/web/p/dc-motors/2389737/

don't suppose you've got a multimeter handy have you?


i do have a multimeter. what am i doing with it? presumably confirming the feed voltage to the motor when the trigger is depressed?
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 13:33

woodstalker wrote:
novocaine wrote:if we can work out the voltage I reckon something like this will be fine.
https://uk.rs-online.com/web/p/dc-motors/2389737/

don't suppose you've got a multimeter handy have you?


i do have a multimeter. what am i doing with it? presumably confirming the feed voltage to the motor when the trigger is depressed?


yep, but put the motor back on so you have a load. it will be across a range and I'd expect it to be from around 20-24v for a 24v motor or 8-12v for a 12v motor.
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 13:37

also to add, I reckon it's a Telwin bimax 120.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 14:01

Photos of PCB will get multimeter readings this afternoon. Cheers

5B092EC6-9C1C-4A74-ACD0-3CC6A674FEB8.jpeg
(254.81 KiB)

40B9D8E7-9076-4A34-B6F6-7852ADB89D56.jpeg
(212.78 KiB)

CD433A69-ECDC-4759-93C1-98693997D088.jpeg
(262.65 KiB)
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 14:08

novocaine wrote:also to add, I reckon it's a Telwin bimax 120.


The front of the machine looks like this with a variable wire speed control knob which that Tekwin doesn’t seem to have?

45928832-2D91-4320-B3FB-7E13B4C05FC4.jpeg
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 14:11

I can't read what it says on the relay but that all looks to be 12v to my eye and the load resistor on the right is 7w so the motor I linked to should be pretty damn close to correct.
measure the shaft diameter to make sure it will fit and for 5 quid get ordering. :D

of course, there is the chance that it isn't the motor that's buggered and it's a dirty contact in the switch at the gun. ;) (reckon a bit of contact cleaner might be a good idea before you spend any money).
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 14:12

Carbon fibre is just corduroy for cars.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 14:36

novocaine wrote:I can't read what it says on the relay but that all looks to be 12v to my eye and the load resistor on the right is 7w so the motor I linked to should be pretty damn close to correct.
measure the shaft diameter to make sure it will fit and for 5 quid get ordering. :D

of course, there is the chance that it isn't the motor that's buggered and it's a dirty contact in the switch at the gun. ;) (reckon a bit of contact cleaner might be a good idea before you spend any money).


Cheers will get some contact cleaner in the gun but it was powering up the wire when the trigger was depressed. I’ll get confirmation of the writing on the relay and also get the multimeter into action too on the motor.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 17:13

Relay text reads:

Made in Italy
FEME MZP
A 100 49 05

Meter reading:

Set to 2000m DC on my Gunsons pocket meter 1 reads 20.
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Re: Welding mask and welder

Postby novocaine » 04 May 2021, 17:28

Suggests a 24v motor. Bugger i got it wrong. :D
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 17:38

novocaine wrote:Suggests a 24v motor. Bugger i got it wrong. :D


Unless I’m using my multimeter incorrectly. Wouldn’t be the first time!

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Re: Welding mask and welder

Postby spb » 04 May 2021, 17:40

That '2000m' setting will be reading millivolts, on a scale of 0 to 2000 - i.e. up to 2V. To tell between 12 and 24V, you'll want the '250' scale.
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Re: Welding mask and welder

Postby woodstalker » 04 May 2021, 17:51

spb wrote:That '2000m' setting will be reading millivolts, on a scale of 0 to 2000 - i.e. up to 2V. To tell between 12 and 24V, you'll want the '250' scale.


I thought that but when set to 200 there’s no reading at all and 200m it reads 24. I tried the connections in the PCB too and same readings. So maybe the PCB or a component in it is gone?
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Re: Welding mask and welder

Postby spb » 04 May 2021, 17:53

That sounds odd. Have you got a fully charged battery to test it against to make sure?
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Re: Welding mask and welder

Postby DaveL » 04 May 2021, 17:56

Also is the battery in the meter OK?
Regards,
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