Fronius CU 1100i, Operating Instructions Manual

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Operating modes
Available operat-
ing modes The individual operating modes can be selected on the power source.
Operating
mode Description
on Available on:
All cooling units
Operating status on CU 800i, CU 800i /460 V, CU 800i Pro, CU
1100i, CU 1100i /460 V, CU 1100i /MV, CU 1100i /MV RVP:
Continuous. As soon as the power source is switched on, the cool-
ing unit starts to work. Fan and coolant pump run continuously.
Operating status on CU 1200i Pro /MC, CU 1400i Pro /MC:
Continuous. As soon as the power source is switched on, the cool-
ing unit starts to work. Fan and coolant pump run continuously. The
coolant pump regulates to a minimum coolant flow of 1.1 l/min
(0.29 gal./min [US]). When the coolant temperature rises, the pump
speed and the coolant flow rate are automatically increased.
off Available on:
All cooling units
Operating status:
Inoperative, even when welding starts.
auto
(= factory de-
fault) Available on:
All cooling units
Operating status on CU 800i, CU 800i /460 V, CU 800i Pro, CU
1100i, CU 1100i /460 V, CU 1100i /MV, CU 1100i /MV RVP:
When welding starts, the cooling unit begins to operate, fan and
coolant pump run.
At the end of welding, the cooling unit continues to run for another
2 minutes. The cooling unit switches off after these 2 minutes.
Operating status on CU 1200i Pro /MC, CU 1400i Pro /MC:
When welding starts, the cooling unit begins to operate, fan and
coolant pump run. The coolant pump regulates to a minimum
coolant flow of 1.1 l/min (0.29 gal./min [US]), which is kept con-
stant.
After the end of welding, the cooling unit continues to operate for 2
minutes. The cooling unit switches off after these 2 minutes.
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