As part of a new series we will post pictures of our products working in high profile or unusual applications. The purpose is to show how diverse and effective our products are in the most unlikely theaters.
Right now the ATP World Tour final is taking place in London and between matches four of our Brava pedestrian sweepers keep the court surfaces clean and free or any litter or debris that might cause problems.
A brand new sweeper has just joined our line-up – the R850. A mid-sized rider this machine replaces the R703 – a faithful servant but now showing its age a little. Major advantages of the new model are its larger size and therefore sweeping performance, strong, unitary construction which means less maintenance and its great price.
The R850 is a tough no nonsense sweeper. This makes it resistant to operator error and easy to maintain. Its simple construction makes it very reliable in even the most arduous applications.
The R850’s direct drive fans are a great example of technology reducing the number of parts and thereby increasing reliability. Add a larger filtering surface and this machine will perform much better than its predecessor in dusty environments. Other improvements include direct drive side-brush motors and a larger diameter main brush. For more details see this page on our website.
The R850 has a class leading 120 litre capacity hopper which means more sweeping between empties. Cleaning performance is enhanced by the machine’s litter gate and electric filter shakers. Available with either an electric or petrol motor this machine will provide many years of reliable sweeping.
We sell hundreds of machines a year and this means we have a buoyant second hand business. Customers will often want to upgrade or replace machines before they are at the end of their useful life so we willingly take their old machine in part exchange. Once we have the used machine we give it a thorough inspection, strip down and service parts where necessary and then put it up for sale.
Pre-Owned Cleaning Machines
Pre-owned sweeping and scrubbing machines make up a large part of our second hand fleet. These may well be long term hire machines returned at the end of the contract or machines part exchanged when a customer upgrades. Regardless a common feature is that the working hours will be low for the age of the machine and it will be a long way from the end of its working life. Wearing parts such as brushes and filters may have needed replacing but otherwise the machine will be sound and capable of providing many years of reliable service.
To sell our machines we often have to demonstrate them. We have a large demonstration fleet just for this purpose. These machines have to be replaced before they are too old or when a new model comes along. Machines retired from our demo fleet are the pearls in our bargain basement. These ex-dem sweepers and scrubbers will have very low hours and will have been finely fettled and cared for. If you can get one they are a great bargain, as good as new but offering a significant saving on the new price.
Our second hand machines are listed on our website in the Bargain Basement section. Ordered by price, at the time of writing there are about 30 machines available. In a later post we will explain in greater detail what we do to bring the machines in our bargain basement up to scratch, but in the meantime if you see one you are interested in call us – it won’t be there long.
With the vast array of cleaning machines available which one do you choose? This post attempts to give you some insight into the questions you will need to answer. Not rocket science but maybe help you prepare for your discussions with prospective suppliers. Also it might help you avoid overlooking an obvious but important point.
Dry or wet?
Dust and debris that is dry can be collected by a sweeper. Introduce water, grease or oil and the situation changes. So the first consideration is just that, will your cleaning be in a dry environment? Yes; look at sweepers. No; then you will need a scrubber drier or a combination machine.
Cleaning Result Required
If you just want to collect dust and debris and are happy with the appearance of the floor then again a sweeper will do just that. However if you want to remove marks and staining from the floor you will want the scrubbing action of a scrubber drier.
Where do you want to clean?
Working inside vs outside introduces a number of considerations. I addition to the wet vs dry situations we have already considered there is the machine’s motor – if its not electric it will produce fumes. Is this acceptable? If not electric power is a your only way to go. When looking at the sweeper’s power requirement look for synergy with the forklifts you might have on site already. Do you have LPG powered forklifts or red diesel on site for tractors then could your sweeper’s motor take advantage of these resources?
Size of the problem
This is a trade off. Cleaning machines have a theoretical cleaning capacity, this is derived from the machine’s cleaning width and its working speed. So, if you want to clean your warehouse floor you could choose a large machine that cleans it in an hour. A machine with a smaller cleaning capacity might take two hours but cost 30% less. There is your dilemma!
A walk behind sweeper can clean a large car park. But, the time it takes when you consider the speed at which it can operate, the number of trips to empty the hopper and that the operator might be exhausted by the amount of walking would make it unacceptable: Then you have to figure out how much you want to pay to reduce or eliminate these factors.
So there you have it. Not exhaustive and it does not cover everything, but this might be useful as a starting point. At the end of the day talking to your suppliers engineers will be the best way to get just the right machine for your application.
Powered sweepers use brushes to pick-up the dirt and debris from the floor and deposit it in the hopper. This post talks a little about the different brushes and their function.
The main brush sweeps dust and refuse into the bin at the rear of the motor-sweeper. Never sweep up string, wire, etc., which can become entangled in the brush and damage the bristles. Periodically check the condition of the brush. The main brush rotates against the direction of travel of the motor-sweeper and throws the dirt and debris over itself into the rear hopper on motor-sweepers having an up-and-over sweeping system.
Adjusting the main brush
The main brush should just touch the floor. While the motor-sweeper is stationary on an even floor the section of floor covered by the bristles should be 3 cm wide. If the main brush no longer touches the floor, or leaves lines of dirt, it has worn down and must be lowered. Once beyond the limit of adjustment the main brush should be replaced, a simple procedure on our sweepers.
The side brush sweeps dirt from the edges of floors and from corners, and directs it to the centre of the sweeper where it can be picked up by the main brush. Looking from the operator’s position, the left hand side brush turns clockwise, the right hand side brush turns counter clockwise. On large machines the side brushes can oscillate so that when they meet an obstruction they will swing out of the way. Up to three side brushes can be fitted to extend the sweeping width of a machine.
Adjusting the side brush
Check that the shape of the trace left by the side brush is circular. As the bristles of the side brush wear down, adjust the height of the brush from the floor. When the motor-sweeper is not in use, the side brush must always be raised above the ground, to prevent its bristles from becoming bent.
We supply sweeping machines that use an overthrow sweeping system. So what you might say, well let me explain.
In the illustration you can see how our Brava sweeper is arranged internally. Notice the brush rotation is against the direction of travel and that the collected dirt and debris are thrown over the brush into the rear-mounted hopper. Now this has many advantages over the forward throw system used by other manufacturers.
OVERTHROW SWEEPING SYSTEM:
• The dirt is thrown from high to low, so the hopper can be deeper and have a greater capacity.
• The hopper can be filled to 80-90% of its capacity.
• Collection of light and heavy, small or bulky dirt is easy and equally effective.
• Perfect visibility of the work area because the hopper is at the rear not the front.
• A large range of size and type of dust filters can be used to improve performance in different circumstances.
FORWARD THROW SWEEPING SYSTEM:
• The dirt is thrown up from below and therefore hopper must be shallow
• The hopper can only be filled to 50-60% of its capacity as the dirt tends to collapse back onto the brush
• Collecting light and bulky debris is much less effective (leaves, paper, etc.)
• Poor visibility of the work area because the hopper is stuck out in front of the brush.
• Smaller dust filters are used so as not to penalise visibility, but that reduces the sweeper’s performance.
So there you have it – over throw sweepers are going to collect more dirt and debris in any given situation and they will work longer and more efficiently. Don’t take my word for it – try one and see for yourselves.