Maintenance / Location Of Errors / Trouble Shooting - Migatronic MIG 385 C mk III Manual De Instrucciones

MAINTENANCE
Lack of maintenance can lead to reduced reliability
and repeal of the guarantee.
Wire feed unit
This unit must be cleaned with dry, clean, com-
pressed air and maintained regularly at the wire feed
roll and the capillary tubes, as it is of great im-
portance for a satisfactory welding result and a mini-
mum of wear and tear that the wire passes through
the wire drive system without any deformations of
the wire or the wire feed roll. The contact tips must
be checked often and changed if the copper plating
of the wire is damaged on its way through the tips.
Copper dust may prevent free passage of wire
through the torch liner. A weekly control and cleaning
of the capillary tubes and the wire feed roll is re-
commended.
MIG/MAG hose
Great care should be taken to ensure that the
welding hose is not overloaded. It should not be
pulled over sharp edges, and heavy machines
should not run over it. The hose should be dis-
mantled every week and blown out with clean, dry
compressed air. The torch should be disconnected
during this process.
MIG/MAG welding torch
There are many parts in the welding torch that have
to be cleaned regularly. The main ones are the
contact tips and the gas shroud. During the welding
process, these parts are bombarded with spatter that
sticks in the shroud. Spatter should be removed
regularly. Add MIG-spray that loosens spatter.
During the cleaning process, the gas shroud should
be removed. Do not clean by banging or hitting the
torch.
Power source
With regular intervals dust should be blown out of the
power source with clean, dry compressed air.
Choked or blocked air intake and outlet may result in
overheating. The power source should be checked
and cleaned at least once a year by trained service
staff.
Cooling unit
Waterlevel should be checked regularly. To ensure
reliable operation, always use Migatronic cooling
liquid of type propan-2-ol in the ratio 23% propan-2-
ol and 77% demineralized water, which provides an
anti-freeze solution up to –9°C (part no. 99290510).
If the water pump sends out a snarling sound, then
extra coolant should be added, using the filling
nozzle. Coolant needs yearly renewal.
LOCATION OF ERRORS
One error situation is registered that is Machine
overheating error. The error is shown for as long as it
exists.
Machine overheat error
Overheating of the machine due to
Origin:
incorrect use, e.g. exceeding the
duty cycle of the machine for the
welding current in use.
Consequence: The welding process is interrupted
and post-flow starts. The LED with
the symbol for overheat is lit. Fan
runs.
If the error is not caused by incorrect
Remedy:
use, Migatronic's Service Depart-
ment has to be called in.
TROUBLE SHOOTING
The wire feed has stopped
1. The inlet nozzle and the wire are not in align-
ment with each other.
2. The reel of wire is too taut, the wire must come
off the reel evenly.
3. The inlet tube or contact tip is badly worn or is
blocked up.
4. The welding wire is not clean or it is rusty. It
could also be of an inferior quality.
5. The pressure roller has to be tightened.
Spatter
1. The wire feed is too fast for the voltage setting.
2. Worn out contact tip.
Porous weld. A cone is formed when spot
welding.
1. Contact tip is blocked up
2. A leak in the gas hose draws in air which mixes
with the shielding gas.
The wire keeps sticking in the contact tip and
feeds very slowly
1. Any damaged wire should be cut off, pulled out
and replaced. The pressure on the wire feed
roller should be checked and adjusted if
necessary.
2. Worn out contact tip.
15