[Gary Webber]

Adam, 

The chips in the blades are used to "balance" the motors by the manufacturer. They snip away portions of the fans to make the vac run smoothly

Gary

[Adam Fearnley]

Oh right that makes sense but i dont see why the motor shaft and turbines would be unbalanced?

[Gary Webber]

Adam,

Its more to do with the pitch so the motors sound balanced together

Gary

[Darren O]

Had the powerflight 10 months now and thats another vac gone and the other one is failing a PAT TEST so might have to buy 2 phoned cleaning systems uk told them they said there not selling the cheap chinese vacs now because they are crap even amtech arent stocking them anymore.I think i will have to buy the imperial vacs £169+vat are they any good or could i fit lamb vacs instead my local prochem are having a look at it just now.

[AJB]

The Imperial vacs have more suck than the Lamb, they are good, they were standard on
my Powrflite. In 2 1/2 years i've changed 2, one because of a water leak in the perfect heat
system, and a bearing problem on the stages with the other.
So the good stages + the good motor gave me a spare!

[Darren O]

Think i will try the Imperial vacs then Amtech said they would sell me 2 chinese vacs ex demo for £40 each dont think i would waste any more money on them.cheers Darren

[garyfindlay]

Darren, are the vacs totally gone. I had lecky tripping problem, and cleaned the carbon deposits around the vac brushes and been ok since. Mine was starting to pop, and burning smell, caused by arcing.

[Darren O]

Gary what porty have you got and are you using the cheap chinese vacs the 2 vacs are still going but on nearly every job both the vacs are tripping the lecky so you might be right.I drove up to Cleaning Systems UK today and dropped it of so i will hopefully get a phone call tomorow the machine is still under warranty so will keep my fingers crossed what ever happens iam going to get the imperial vacs fitted as the chinese ones are crap.

[garyfindlay]

Darren, I`ve got the 1085, I bought as a demo from Amtech. The vac started playing up after a month, and Amtech posted me a new one. I don`t know if it is a chinese one, but it has lasted up till now, but only being used part time, and dried out after every job.

[Darren O]

There great machines apart from the cheap vacs Amtech said there not selling the chinese ones now. Cleaning Systems Uk phoned me today both vacs need replaced and there is some water damage in them so Amtech wont replace them under warranty but i was expecting that a few months ago i didnt have the waste hose closed correctly and water was pouring out of it.Ive been quoted over £500 to supply and fit the new vacs.

[AJB]

http://www.amtechuk.biz/parts_centre.php

Fit them yourself and save over £100.