Heathrow Scientific HS120460 Sea Star Multi-purpose Digital Orbital Shaker with Varying Speed Adjustments, 100 to 240 VAC, 20 to 300 rpm, 4.5kg Load Rating, 4 to 40 Degree C

I purchased this item and it does not work. My machine runs for a bit and then stops itself and gives a motor overload error message. It is brand new out of the box and there is barely anything loaded on it. I was also careful to follow the directions and there are no obstacles in the way.The worst part of the experience is that I called customer service a couple times and have not gotten a response from them to help me debug the issue. I have emailed them and hope to get a response soon... I may change this review if I get some support and get the instrument working.------------------------------------------Update: I did receive an email response from customer support and they suggested I lubricate the system with some lubricant that came with the item. I tried this fix and it helped for a brief period of time (machine could run for 1-2 hours) but then it would lock up again and claim a motor overload. I ended up returning the item because the suggested fixes would not work.

It shakes.... the variable speeds work...But the tie-down cords do not work worth a darn...Had to put 4"washers over the neck of the flasks to secure them so the don't to over....Nice try!!!!