We used A1 Doors in Auckland to service ours. They checked the motor, lubricated everything, and tightened the springs. Then re-adjusted the motor to suit the new setup. Well worth it.

scuwp:

 

That was exactly what we thought until we blew a motor out.  Spring tension and balance, as it turns out, are very important.  It would have been a quick and easy job costing about $80 for a service guy to come and check all was OK after it was all fitted (newsflash...it wasn't).  Instead cost me $1000 for a new motor because I thought exactly the same as you.  The installer said they get a lot of work out of these DIY systems because people don't appreciate the tuning involved.  He didn't mind, kept his business lucrative.      

 

Interesting.  Ours was installed in 2019. No issues.  When you look at the power in those springs, you'd wonder how the addition or uneven distribution of <15kg would make a difference.

I don't fancy my chances of getting a tradesman out for $80.  More like $180.

duckDecoy:

mattwnz: Tensioning the springs didn't take very long, so I would ring around for prices. It is not a job to DIY.

I wouldn't even dream of fiddling with those springs.  They have enough kinetic potential to kill or maim.

There is no way you'll get a tradesman on site where I live for $80.  Competition is absent and competence not far behind.

should get it serviced every year or 2 as the springs stretch and get loose so need tightening to keep the door motor in good nick.

Most doors have 2 sets of springs, one for up and one for down and they should be balanced to hold the door half way up, and if the motor/chain/belt were to break they should stop the door slamming shut or slamming open and coming off the end of the rails.

Quick and easy test is to close the door, disengage the motor and lift the door slowly. there shouldn't be too much force needed to pull the door up and when it goes past half way it shouldn't take too much force to push it to the top. same goes with bringing it down.

MikeAqua:

 

Interesting.  Ours was installed in 2019. No issues.  When you look at the power in those springs, you'd wonder how the addition or uneven distribution of <15kg would make a difference.

 

Given some springs are rated to about as low as 30kg, 15kg is adding another 50% to them so yea makes a difference.

Jase2985:

 

 

 

Given some springs are rated to about as low as 30kg, 15kg is adding another 50% to them so yea makes a difference.

 

Mine was so heavy after the  insulation was added to it that it was difficult to manually lift when it was closed. It needed the spring retensioning anyway after a years usage . So adding the insulation would have added a lot of extra stress to the motor. 

Jase2985:

 

Given some springs are rated to about as low as 30kg, 15kg is adding another 50% to them so yea makes a difference.

 

There's no way ours are only 30kg springs.  They are "I will kill you if you try to release me" springs.  It was easy to lift the door manually before,during and after installation of the polystyrene. 

MikeAqua:

 

Jase2985:

 

Given some springs are rated to about as low as 30kg, 15kg is adding another 50% to them so yea makes a difference.

 

 

There's no way ours are only 30kg springs.  They are "I will kill you if you try to release me" springs.  It was easy to lift the door manually before,during and after installation of the polystyrene. 

 

 

 

you missed the point, i didnt say they were im saying someones door could be, so the 15kg of weight could be adding a lot more to their door.