INTRODUCTION
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© ESAB AB 2017
INTRODUCTION
Cooling unit EC 1000 is intended for cooling water-cooled TIG welding torches.
Design structure of the cooling unit
The cooling unit consists of a cooler board, a heat exchanger, a cooling fan, a diaphragm
water pump, a coolant tank and an ELP (ESAB Logic Pump). The cooler board is powered
and controlled from the welding power source. The water pump is circulating the coolant
through the heat exchanger and onwards in the system. The cooling fan is used to cool
down the coolant during its way through the heat exchanger. A thermal sensor is attached to
the heat exchanger. The sensor monitors the temperature of the coolant and facilitates
control of the cooling unit functionality. The ELP is a detection system which checks whether
a water-cooled TIG torch is connected to the welding equipment and enables start of
cooling. The power from the welding power source is converted in the cooler board, to the
appropriate supply voltage for the thermal sensor and the ELP.
Block diagram of the cooling unit