37
Care, maintenance and disposal
Check water
level
Read instructions
Change
coolant
Blow out
coolant
Fig.33 Explanation of symbols
The relevant maintenance intervals are
described in detail on the following pages.
Under normal operating conditions the machines require only a minimum of care and
maintenance. However, it is vital to observe some important points to ensure the welding
machine remains in a usable condition for many years.
-
Check mains plug, mains cable, welding torch, interconnecting hosepack and
grounding (earthing) connection for damage
-
Check that there is a gap of 0.5 m (1.6 ft.) all around the machine to ensure that
cooling air can flow and escape unhindered.
Note!
Furthermore, air inlets and outlets must never be covered, not even partly
covered.
Caution!
Risk of scalding from excessively hot coolant. Only check the water
connections when the coolant has cooled sufficiently.
When using water-cooled torches:
-
Check the water connections for leaks
-
Monitor water return amount in the coolant container
-
If water is not returning, check the cooling unit and vent it if necessary
Note!
If water-cooled torches are operated without coolant, this will normally
result in a fault in the main torch body or hosepack. Fronius shall not be liable
for any damage resulting from such action. In addition, all warranty claims are
forfeited.
General remarks
Symbols for care
and maintenance
of the cooling
unit
Every start-up
Warning!
An electric shock can be fatal. Before opening up the machine
-
Move the mains switch to the “O” position
-
Unplug machine from the mains
-
Put up an easy-to-understand warning sign to stop anybody inadvertently
switching it back on again
-
Using a suitable measuring instrument, check to make sure that electrical-
ly charged components (e.g. capacitors) have been discharged
