Yes OAE, so far ok. One occasion the board fried very likely fried by lightning. Can either repair or replace. I op to replace because I don't have to wait, and got it replace immediately. The faulty board still with me, need to fix it when I have time.

Lightning arrestor or isolator from the incoming power. And if can ground the arms.

Most if my house expensive equipment are protect using cal-lab.

If you are a diy person cal-lab not hard to install.

My autogate also got fried by lighting before. But replacement is only hundred plus. So I never put one in.

The damage look like is from the casing. I doubt is the wrong ratting motor.

905 can handle up to 150kg per wing, unless you have a real heavy door. Or maybe you got yourself a lemon.

20kg, so light?

Sometime is the manufacture issue.

Yup, grease may damage the arm because the grease will stick on the foreign material on the arm.

Some grease will damage oil sealer too. Hehe if you want try brake fluid it usually damage many type of sealer.

Don't apply.

If I water my plant, I just water the arms.

Water to wash la. How long have you used the gate? Sound like a faulty roller/bearing, you apply grease is ease the movement not a permanent solution. 30ft may required a good roller.

Ask your neighbor, compare the performance. 1.5 years is too early for roller to give way.

Look like they give you lousy quality roller.

How long you going to do that? My mother house sliding gate have not even grease before since installed almost 10 years ago.

Service car also don't need so regular.

Your door bearing running smooth or not? Look like too much stress.

Why can over turn.

Hope you get free repair/replacement.

If design din't improve, or no reprogram on the board I think it may happen again.

A good excuse to upgrade new model

Most system have over current protect, if the swing can't go anymore the current will increase and the board will stop. Same cancept as our car auto wind power windows.