We bought the GreenDrum as a demo model. Due to age, use, temperature extremes (the GreenDrum is situated outside with no covering), the drum requires frequent maintenance and occasional repairs. In the winter of 08-09 we rebuilt the auger gearbox and replaced the auger. The auger required being replaced due to the presence of metal (silverware) in the compost, this metal scraped between the auger and its trough and caused the auger fins to slowly wear away. Also, if the food is loaded too quickly, sometimes it causes the auger to strain and blow a fuse. Regular maintenance requires greasing grease points, the chains, cleaning the unloading doors and general cleaning. In 2010 we had to replace the jack-shaft supports on the 512, because it have gotten out of line over time and needed a support which was adjustable. In early 2011 the doors finally gave up on life, and we replaced the plastic and rewelded the handles for smoother action.
This section could be really long, I've tried to be concise. The auger on the GreenDrum is positioned at an angle of about 45° from the mixer to the auger.This angle has created some problems during maintenance. We recommend that any one buying or installing a GreenDrum install the auger not at an angle, but rather horizontally flat.The lack of an angle will also stop water from accumulating near the gearbox and eventually ruining the seal on the drive shaft. If you are a prospective buyer, you should also take a serious look at you need and the intended use. Would it be better for you to use just windrows (long piles of compost)? Or do you need something to meet high environmental regulations? Perhaps your location is innercity so smell is an issue? Maybe you need an enclosed pole barn? What is your predominate item that needs to be composted?
Finished compost is used as a soil amendment in the college garden and in landscaping.
With time this has become better and better. BW Organics has tossed around the idea of having a semblance of a mobile repair unit as well.