industrial roller shutter door.

[Robo]

A friend of mine has a 3phase roller door. Under normal circumstances you press the up button and it opens and continues to go up untill the limiter switch kicks in. When it comes down you have to press and hold the down button. I guess this is for safety reasons.

The up button has stopped working but the down button works fine. If you remove the cover and press the contactor buttons you can press and hold it and the door opens and likewise going down. However the up button and down buttons seem to work back to front.(the contactor which i assumed would open actually closes and vice versa.

I went upto the motor and looked at the limiter switch. I tested continuity through the switch to see if it worked and it did.

I have no experience with these doors tbh and im a little baffled and hate being beaten

Does any1 have a simple guide to help me understand the problem and to identfy a faulty part.

Thanks Robo

 

[Robo]

doesnt appear to have any wear tbh. I dont think theres any cable faults its a dodgy part, im sure of it.carnt b motor as this works. contactors work when you directly press them in. So i think it has to be coils or a dodgy limit switch

 

[Jonesy83]

wont be the limit switch if you say your getting continuity is the coil open circuit?

most likely the coil on the contactor

 

[i=p/u]

why does these motors not require a neutral????

 

[Knobhead]

Because they are a balanced load so no current would flow.

 

[industrialdoors]

When I got my electric roller shutter installed from*****they where very thorough and everything worked fine with my roller shutter

 

[Stroppy]

Do you by any chance have a vested interest?!

 

[Darkwood]

Yes please discuss with the forum admin so as to sponsor the site so you don't break the site rules about advertising..... others pay to advertise; it would be unfair if this didn't apply to you ....ps welcome to the forum.

 

[Knobhead]

HeHe, Oh dear.