Sweeper Designs: The Good, The Bad & The Ugly!Friday, June 1, 2012
In the most recent article we discussed several Tennant machines. They were the old Model 240EH and the new Model S30, plus the 6200 Compact Rider Sweeper. As you may recall, we are attempting to replace the old 240EH Electric rider sweeper with a new version of a similar design. As we discussed, the Tennant Model S30 is a rider sweeper, which could have been a good replacement. However, this model is available in Gas, LP or Diesel. So, if your operations only require an electric/battery unit this would not be an option. So let’s rule this model out of the running!
Next, let’s examine the Tennant Model 6200. This model is an electric/battery unit, so we are okay in that respect. The sweeper path is less than the 240EH by almost a foot: 53” versus 42” respectively. Comparing the hopper capacity:
Model 6200 Model 240E
Volume Capacity: 4.4 cubic Ft/124L 4 Cubic Ft/396L
Weight Capacity: 300 lbs/136Kg 200 lbs/544 Kg
One can now understand that this model will not fulfill your expectations. The design of the machine is also very different and also quite inadequate for the task at hand. The sweeping design is such that when the debris is swept it has to travel up and over the main broom. This is because the debris hopper is located behind the main broom. This design was used by Advance for many years on their models 5600 and 5800 models. Some older Advance people may remember these models from the 1970’s and 1980’s. They finally gave up on this backward design. Several of their problems were:
If the vacuum system was not up to par, the debris would not go into the debris hopper but rather get caught in the main broom chamber and main broom. As a result the debris would just go around and around in the brush chamber.
When the machine was parked and turned off, the left-over debris in the brush chamber would simply fall to the floor making a mess under the sweeper. When the operator began to sweep the next day, he had to clean where it had been parked.
Moving on, let’s examine the Tennant Model S20. The S20 is probably the closest in replacing the old 240EH. First of all, it is available as a battery unit, which was our main goal. The machine is a little smaller, roughly the total weight of the S20 is 3980 lbs/1810 Kg. One immediate advantage is that the S20 is a high-dump. This means it can dump the hopper debris in a dumpster. The old 240EH was a low dump. With it being a high dump, this results in a smaller debris capacity hopper. Because it is now lifting this debris some 5 feet in the air, the hopper capacity will max out at 650 lbs/295 Kg. The hopper volume, however, is a respectable 11 cubic feet/310L compared to the 14 cubic feet/396L.
And, by the way, the sweeper design is identical for the S20 as compared to the 240EH in the respect of the debris hopper. It is in front of the main broom chamber for easy and efficient sweeping. Sometimes it seems I ramble on, so I need to end this article.
In conclusion, I think the S30 is too big, the 6200 to small and the S20 would be just right.
As always, thanks for reading. Feel free to contact me at firstname.lastname@example.org