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High Pressure Decision

With so many different types of high pressure cleaner on the market, choosing the right model can be difficult. Karcher explain the different types available and how they can help you to maximise your productivity.

Cold water or hot water? For spot cleaning and outdoor cleaning, a cold water pressure washer is often suffi cient. Cold water machines are great for quick cleaning jobs as they are easy to transport, take up little storage space and are quick to set up. They are also cheaper to buy than hot water pressure washers. However, for cleaning jobs where there is a lot of dirt to shift or deep cleaning work to be done, a hot water pressure washer may turn out to be a lower-cost long term option.

Hot water pressure washers use mains electricity to power the motor and pump, and also feature a diesel burner to heat the water. Cleaning with hot water is quicker than with cold water because hot water shifts oil and grease more easily. Objects cleaned with hot water also dry more quickly, so the fi nished result is often better. Although hot water machines need diesel to fuel the burner as well as electricity to power the motor, running costs can often be lower than cold water machines due to this increased cleaning effi ciency and the resulting reduction in labour and detergent costs.

Most Kärcher hot water machines feature the eco!effi ciency mode, which optimises the machine’s settings to function at its best but with diesel consumption reduced by 20%. Kärcher invented the hot water pressure washer many decades ago, and has been working ever since to refi ne them as much as possible. Many Kärcher models feature a steam function, helping even more to shift oil and grease from mechanical parts and workshop or production areas.

Which power source? This really depends on budget and the kind of sites the machines will be used on. By far the most popular power source for pressure washers is 240V single phase (with a diesel- fi red burner on hot water machines), but for sites where electricity is not readily available or very high cleaning performance is needed, Kärcher’s ranges of petrol and diesel powered machines may be a better option.

The right accessories to

speed up the job Of course there will always be times when detergents are necessary, and Kärcher’s range is designed to be as

environmentally friendly and cost- effi cient as possible, by use of high concentrations to reduce packaging, and special additives to separate oil from water.

Using the right accessories can have a major impact on productivity, costs and time. Simple devices such as washing brushes and Dirt Blaster power nozzles can really improve cleaning performance. Hard surface cleaners are ideal for contract cleaners as they provide a very uniform fi nish and drastically reduce the amount of time needed to clean fl oors and walls. The new, highly innovative FRV 30 hard surface cleaner attaches to a pressure washer to clean fl oors and walls quickly and very thoroughly, and features a unique venturi system that automatically pumps cleaning water away – meaning that the object being cleaned dries more quickly but with no extra power or water being used, making it ideal for indoor or outdoor use.


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