hot l H2O
The cooling unit thermostat has tripped.
Coolant temperature too high
Wait until the end of the cooling phase, i.e. until "hot | H2O" is no longer dis-
played.
If using a ROB 5000 or field bus coupler for robot control: After completion
of troubleshooting and before resuming welding, set the "Source error reset"
signal.
Cause:
Remedy:
no l H2O
If present: The cooling unit flow sensor has tripped.
Coolant flow problem
Check coolant level, cleanliness and proper return;
change coolant if necessary
Coolant filter (if present) misplaced when connecting coolant return
Clean coolant filter using clean tap water or change filter element
Cause:
Remedy:
Cause:
Remedy:
Insufficient or no coolant flow
Coolant level too low
Top up coolant
Constriction or foreign body in cooling circuit
Remove constriction or foreign body
Coolant pump fuse defective
Replace coolant pump fuse
Coolant contaminated
Change the coolant
Coolant filter (if present) misplaced when connecting coolant return
Clean coolant filter using clean tap water or change filter element
Coolant pump sticking
Turn coolant pump shaft (see operating instructions, "Turning the coolant
pump shaft" section). Contact after-sales service if the coolant pump shaft
proves impossible to turn
Coolant pump defective
Contact After-Sales Service
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
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