5 Commissioning
5/10
5.9
Cooling unit function specification (optional)
A functional test is performed on the cooling module after the welding machine has been switched
on.
The coolant pump and the fan are switched on.
When the pump is running, there is a sufficient coolant level and enough through-put, the cooling
module is switched off.
If the through-put is not sufficient a coolant error is reported and the pump runs for a maximum of 2
minutes so that the operator can top up the coolant.
The cooling module is switched on at the start of the TIG welding process.
After the welding process has stopped, the water pump and fan continue to run for a further 5
minutes and then switch off.
5.9.1 Coolant
error
If there is no through-put for longer than 2.5 seconds during the welding operation e.g. because of
a lack of coolant, pump failure or a burst or leaking hose:
•
an error message is issed (chap. 3, K1: Water deficiency LED)
•
and the welding process is ended in a controlled manner
(coolant pump and power unit of the welding machine are switched off).
When the welding process is re-started, the coolant error is reset and the cooling module is
switched on. If still no through-put has built up after 2.5 seconds, the cooling module is switched
off, the water deficiency LED (chap. 3, K1) comes on and the welding process is ended in a
controlled manner.
