Automatic scraper not working properly in one passage

Alibaba

Hi guys. Just wondering if anyone has any experience of these things. I have Dairymaster automatic scrapers in 3 passages in shed. One of the scrapers in one passage will only work for about a minute and then cuts out. Its like this on the manual and the timed (auto ) switch. The other two passages are working fine. Though it was the solenoid park switch , so disconnected it and no joy. So don't know. Any thoughts.....

Grueller

More than likely the sensor that stops it when it returns to base point. It will be just behind the bar that the actual Scraper pushes Back. They are about €40 and can be fitted DIY if you just take a photo of the wiring when removing the old one and rewire it the same way.

cjpm

Grueller is correct. That sensor is ignored by the scraper controller for the first minute while the scrapers are getting started. Once the minute is up the scraper will shut off if it’s faulty.

Alibaba

Grueller - cjpm , Thanks guys for your help. I was thinking it must be something along that lines alright. I'll try and fit a new one tomorrow when I'll be able to get one when the shops open.

Grueller

https://www.boards.ie/discussion/comment/118942056#Comment_118942056

Your local tech should have an on call service today to cover the likes of this. I'd call him anyway. Stones of a job hand scraping when it's down.

timple23

If it is cutting out after a minute does it not mean that the sensor is working? The sensor works by a magnet sending a current to the sensor, so could something have been magnetised and is sitting near the sensor? Normally when those sensors fail it means the scraper won't knock off.

Just realised after typing it that after typing that it was a Dairymaster and not Dairypower. Is it possible to disconnect the sensor and then run the scraper? That would isolate your problem to the sensor. I got sensors off rs components for a fraction of the cost they were from Dairypower, you might be able to get the same sensor if you can find a number on it.

Alibaba

https://www.boards.ie/discussion/comment/118942806#Comment_118942806

Thanks timple23. I disconnected the sensor and it hasn't made any difference. Still only works for a minute and then cuts out. I'll try and speak to somebody tomorrow to get to the root of it. I should be able to replace that sensor myself anyway - simple enough job.

Alibaba

https://www.boards.ie/discussion/comment/118942760#Comment_118942760

I'm not too bad as haven't many cattle in the shed so could afford to wait till Tuesday. Sick of the hand scraping alright though. Anyway green green grass here we come soon 😃

Alibaba

Thanks timple23 for the tip about rs components. Haven't heard of them before. They seem to carry everything in the line of that stuff. I might be able to get a part number and see if they'd have it , if that's the problem

alps

The scrapers are very easy to pull with a quad. Simple easy solution if they stop working for any reason..(if you have a quad)

alps

What is the widest scraper you can have on one track.?

Wildsurfer

https://www.boards.ie/discussion/comment/118945894#Comment_118945894

I have a 22' on 1 track but I think its too wide. It would probably work fine if not feeding silage off the passage but I am and the odd time it gets lifted slightly off the track if silage gets caught against the wing. I could take off the wing but it would leave a nice bit behind I'd say

Injuryprone

https://www.boards.ie/discussion/comment/118944548#Comment_118944548

Could you not have run it for a series of 1 minute runs. It would've been easier than hand scraping no?

Alibaba

https://www.boards.ie/discussion/comment/118946582#Comment_118946582

Yeah I did that too. Bit of a pain in the neck though but better than hand scraping alright. Might not be the best though on and off every minute.

Anyway all fixed now. Thanks to everybody for your help. Sensor was the problem alright.

Alps : Have no quad but as I say all is good now.

Might be no bad idea having a spare sensor as these things always seem to happen at the weekends / Christmas etc 🙄🙄😉

Dakota Dan

https://www.boards.ie/discussion/comment/118950833#Comment_118950833

Is the sensor the complete cut off switch or is it located somewhere else?

jaymla627

https://www.boards.ie/discussion/comment/121269915#Comment_121269915

You can wire the dairy master to stay on constant when the sensors fail, that's a regular occurrence their a balls of a design unless you have the sensor unit out of the shed where it's not coming into contact with slurry and cow traffic

Dakota Dan

https://www.boards.ie/discussion/comment/121270166#Comment_121270166

But if you bypass the sensor they won’t work on auto? Is the sensor the complete cut off switch?

Lorne Armstrong

Did you check the circuit board for scraper??? Water or dampness can get in to them and corroded it.

Dakota Dan

https://www.boards.ie/discussion/comment/121271917#Comment_121271917

No it’s not the circuit board as it’s only one of three scrapers on the same board that’s acting up.

Dakota Dan

https://www.boards.ie/discussion/comment/121271917#Comment_121271917

It was the circuit board on the scraper. They’re different to my scrapers that don’t not have a circuit board on the actual scraper.