61
A7 MIG Welder
© Kemppi Oy 2017
1735
OPERA
TING M
ANU
AL
7. MAINTENANCE
When considering and planning routine maintenance,
please consider the frequency of machine use and the
working environment.
Correct operation of the machine and regular maintenance
will help you avoid unnecessary downtime and equipment
failure.
Disconnect the machine from the mains before handling the
electrical cables
.
7.1 Daily maintenance
Check the overall condition of the welding gun. Remove
welding spatter from the contact tip and clean the gas
nozzle. Replace worn or damaged parts. Only use original
Kemppi spare parts.
Check the condition and connection of the welding circuit
components: welding gun, earth return cable and clamp,
sockets and connectors.
Check the condition of the feed rolls, needle bearings
and shafts. Clean and lubricate bearings and shafts with a
small quantity of light machine oil if necessary. Assemble,
adjust and test function.
Check that the feed rolls are suitable for the filler wire you
are using, and that their pressure adjustment is correct.
7.2 Periodic maintenance
Periodic maintenance should only be carried out by
a suitably qualified person. Disconnect the plug of the
machine from the mains socket and wait about 2 minutes
(capacitor charge) before removing the cover plate.
Check at least every half year the electric connectors of
the machine – clean any oxidized parts and tighten loose
connections.
You must know the correct tension torques values
before starting the reparation of the loose joints.
Clean the inner parts of the machine from dust and dirt
e.g. with a soft brush and vacuum cleaner. Also clean the
ventilation net behind the front grill.
Do not use compressed air, there is a risk that the dirt will
compact even more tightly into gaps of cooling profiles.
Do not use pressure washing devices.
Only an authorized trained electrician should carry out
repairs to Kemppi machines.
7.3 Service shop maintenance
Kemppi Service Workshops complete maintenance
according to their Kemppi service agreement.
The major points in the maintenance procedure are listed
as follows:
• Cleaning of the machine
• Checking and maintenance of the welding tools
• Checking of connectors, switches and
potentiometers
• Checking of electric connections
• Checking of mains cable and plug
• Damaged parts or parts in bad condition are
replaced by new ones
• Maintenance testing.
• Operation and performance values of the
machine are checked, and when necessary
adjusted by means of software and test
equipment.
Software loading
Kemppi Service Workshops can also test and load firmware
and welding software.
