| Fresh Water Handling For circulation of the internal, closed, fresh water circuit of the cooling system Johnson Pump can offer a number of alternatives in its DC driven CM- and CO-series (see page 19 for further information). It is also common to use a flexible impeller pump for this purpose if it is located on the cold side of the system (max. 55°C). Other types of belt-driven centrifugal pumps may also be useful. The closed circuit normally transfers heat from the engine to the heat exchanger. The liquid is water and anti-freeze. Cooling Capacity The required output of the cooling pump - raw water as well as fresh water handling - is related to • engine size and type (gasoline or diesel) • type of cooling system (size of heat exchanger) • water cooled engine oil, reverse gear, exhaust system Contact your local dealer for more information, or for indirect cooling systems your supplier of heat exchangers. |