Clark 150

[Wedg1e]

maybe even Maplins might have someone who could use a multimeter.

:snigger: You cynic

 

[Wedg1e]

Ok here is a picture of the board and the wires
View attachment 37814
View attachment 37815

Looks to me like the board is drilled to accept different sizes and designs of potentiometer; with the new pot. in place it should be obvious how to wire it up.

 

[Gareth25]

Right lads as there is three brown wires does it make a difference where they go as I cant see from the picture which one goes where and I don't want to mess it up thanks

 

[Gareth25]

Thanks for the photo but it shows 1 blue and three brown ( which is what I've got) but where do each of the brown wires go? Do they go to a specific place or can any brown cables go to any connector? 2 cables come from the main ON/ OFF switch and 1 from Min/Max switch.

Thanks a lot.

Photos to help:

 

[shenion]

Here is a manual for the 150EN.

The blue and 1 brown should go to the power switch and connect to J1 and J2. The other 2 browns connect to J3 and J4.

As your board does not have the lugs marked, you will have to trace what they do. A photo of the back of the board may help.

 

[Gareth25]

Here is a photo of front and back.

Note that the pins are on the bottom left on the front photo and the bottom right on the back photo

 

[shenion]

Bottom in J1 then upwards in J2, J3 and J4.

 

[PTvor]

:snigger: You cynic

Not far off the mark.

I went into Maplins because I was stuck for a few resistors a couple of months back. The bloke who served me asked whether I would mind answering a question about them.

Did the gold band have to be connected to the positive or negative side?

 

[mike 109444]

Blue to j4
max/min to j1
OTHER TWO BROWNS TO J2 / J3 DOES NOT MATTER WHICH AS THEY ARE CONNECTED TOGETHER ON THE PCB

 

[Gareth25]

Hi mate I've tried doing what you said but when I turn the power on it trips my fuse

 

[shenion]

The two wires from the main power switch go to what he shows as J3 and J4 (bottom two)?

 

[Gareth25]

Ok I've got power green light is on /fan is running but when I Press the trigger on the gun the motor for the wire feed does not start

 

[mike 109444]

Sorry about that Gareth ( it was a bit late at night). I take it you have replaced the wire feed control now.
Check you have 240 VAC at the points "Y" in pic. If ok Check you have 24 VAC at the points "X" in pic. TAKE CARE AS there is MAINS voltage across the pcb.

 

[shenion]

Also on the 3-pin header just right of J3 and J4, is there a shorting jumper on 2 pins. I can't see one in the small pics?

 

[Gareth25]

There is no jumper on any pins mate

 

[shenion]

There should be one between the center and the side marked 240.

 

[mike 109444]

There should be a link / jumper between the two pins indicated by red line

 

[Gareth25]

Hi,just put a jumper in place and the relay is clicking on when I press the trigger but no movement on the wire feed motor I've tested the motor with a car battery and its fine

 

[Gareth25]

Hi mate, I've put a multi meter at point y and got 240 then at point x and got 28 is that ok

 

[shenion]

Sounds like something else is disconnected; I would not condemn the board as bad yet.

Do you get a weld voltage? The wire feed is powered from the welding voltage.