EWM Tetrix 352 AC/DC SYNERGIC PL. AW GR Operating Instructions Manual page 51

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Connect the cooling unit mains connection cable with an external voltage supply.
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Establish a coolant return from the welding torch to the power source.
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Establish a coolant return from the power source to the cooling unit.
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Establish a coolant forward flow from the cooling unit to the welding torch.
Coolant flow monitoring
After switching on the system, monitoring sets in with a time delay of 30 s to allow for the
system pressure to build up. The flow rate depends on the torch used. At the moment
monitoring is adjusted for use with a torch of type 150A PMC. If the flow rate is less than
1,2 l/min a process warning is issued on the system interface (coolant error). If the flow rate
drops below 1,0 l/min an error is generated in the system causing the main and pilot arc to be
switched off.
Coolant temperature monitoring
After switching on the system, monitoring sets in with a time delay of 30 s to allow for the
system temperature to build up. If the system temperature rises to above 35 °C a process
warning is issued on the system interface (coolant error). If the temperature rises to above
42 °C an error is generated in the system causing the main and pilot arc to be switched off.
099-003133-SCO01
07.04.2014
Description 0
Cooling unit
Cooling unit voltage supply
Protective contact socket
Quick connect coupling (red)
Coolant return to cooling unit
Rapid-action closure nipple
Coolant return from welding torch
Plasma torch
Quick connect coupling, blue
Coolant supply to the welding torch
Design and function
NOTE
Cooling unit connection
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