13-CARE AND MAINTENANCE
Warning! An electric shock can be fatal. Before opening the machine:
- Switch it off and unplug it from the mains
- Unplug machine from the mains
- Put up a clearly legible and easy-to-understand warning sign to stop anybody inadvertently switching it back on
again
- Check to make sure the electrically charged components (e.g.capacitors) have been discharged
- Bolts in machine case also work for ground connection. Never use other bolt that can not work for ground
connection
Before open the machine
Maintenance of welding power source
Please follow the instructions as below to ensure normal use of power source
- Conduct safety check at regular intervals (see āSafety rulesā)
- Dismantle machine side panels and clean machine inside with clean and low-pressurecompressed air by
professional technician, not less than twice per year. Clean the components at a certain distance only
- If a lot of dust has accumulated, clean the cooling-air ducts
Maintenance of water-cooled welding torch
For water cooled welding torch:
- Check the connections of water cooling system
- Check the coolant level, cleanliness of coolant etc. (clean coolant only)
- Frequently check coolant's back flow state
Daily maintenance
Fig. 13-1: Daily maintenance
79
Maintenance
Disconnect main power before maintenance
3 months
Change
illegible
labe
Repair or
replace
broken
cable
Clean and
tighten
welding
terminal
Blow or suck inner part,
and clean every month
when working in
harsh environmental
condition
6 months
or
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