Kemppi KempCool 40 - Manual (Page 6)

EN
1.3 Properties
Description and operation principle
KempCool 40 is an efficient water cooling device. It is equipped with a fan and a radiator using
water or special non-freezing liquid as a coolant. The operating temperature range of the
device is 5…40 °C (plain water) or -20…+40 °C (non-freezing liquid) .
Excess heat is removed from the coolant with a fan. When the temperature of the coolant
rises above a set level, heat exchanger is activated and the fan starts to operate, until
the temperature gets below the set level. The activation level can be adjusted inside the
KempCool 40 cooling unit. See instructions later in this manual.
Cooling capacity
Nominal cooling capacity is 4 kW. The temperature of the coolant is always higher than the
surrounding air by 0 to 8 °C.
NOTE! Whenever the unit is idle for longer periods of time, or if the temperature may occationally
drop below freezing point during storage or transport, empty all water flow circuits to avoid frost
damage, or make sure that the cooling brine is of non-freezing kind.
NOTE! Do not use inflammable or explosive liquids.
NOTE! To get special non-freezing cooling brine, please contact Kemppi Oy.
Cooling circuit
The KempCool 40 cooling device is equipped with an effective pump, which makes the
coolant continuously circulate between the heat exchanger and the welding gun. In the
welding end, the coolant absorbs heat, which is transferred to the ambient air in the heat
exchanger.
With the flow control screw you can control the flow of the cooling liquid. The level of coolant
container must be checked regularly and filled if needed.
NOTE! Avoid running the pump dry.
NOTE! Ensure that there is at least 40 cm free space on both sides of the machine for effective
cooling air circulation.
Cooling air
If surrounding air is heavily contaminated with particles of dust, install a filter to clean the
incoming cooling air. The filter is available as an optional accessory. The filter must be regularly
checked and replaced if needed.
Flow control
There is a flow control screw in all return lines of the cooling circuit. With this screw you can
adjust the coolant flow rate. Malfunction is indicated with a signal light in front of the cooling
unit.
Pressure alarm limit
If circulation of the coolant is for some reason weakened due to a fault somewhere in the
cooling circuit, the coolant pressure drops and the red signal light shows alarm.
With the control device located inside the cooling unit, you can set the pressure level where
the alarm is triggered.
KempCool 40
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