COMBO-401 i/501 i
OPERATOR’S MANUAL
17
leak
；
6
．
Valve doesn’t work
；
7
．
The nozzle is distorted
；
6
．
Check the voltage 24VDC of
the valve winding
；
7
．
Replace the nozzle
；
8
．
Current /voltage
is out of control
1
．
Control cable of wire feeder is
broken
；
2
．
Current /voltage adjust potentiometer
is damaged
；
3
．
The PCB is damaged
；
1
．
Replace the control cable
；
2
．
Replace the potentiometer
；
3
．
Repair or replace the PCB
；
9.
Wire
feeding
starts
without
pressing down the
welding torch switch
1
．
The wire connecting welding gun is
short circuit
；
2
．
Control cable of the wire feeder has
short circuit
；
3
．
The manual button of wire feeding is
damaged
；
1
．
Repair or change welding gun
；
2
．
Repair or change control
cable
；
3
．
Change the manual button of
wire feeding
；
10
．
The current isn’t
stable, and there is
too much spatter
1
．
Welding criterion is wrong
；
2
．
The quality of wire is bad
；
3
．
There is rust or oil on the welding
device or wire
；
4
．
Too much fluctuation of distribution
voltage
；
5
．
The stick out of the wire is too long
；
6
．
wrong position of the wire diameter
select switch
；
7
．
The type of wire feeding slot
doesn’t match the welding wire
；
8
．
Problems in the protective gas
；
9
．
Incorrect type of the tip or the
aperture of the tip becomes too big;
10
．
Too much feculency in the wire
feeding tube
，
the resistance of the
feeding wire is too large
；
11
．
The ground cable becomes loose
；
1
．
Adjust the welding criterion
again
；
2
．
Change wire
；
3
．
Clean the welding device and
wire
；
4
．
The fluctuation of the line
voltage can’t exceed ±15%
；
5
．
The stick out should be about
10
times
than
the
wire
diameter
；
6
．
select a right position of wire
diameter select switch
；
7
．
Replace wire feeding wheel
slot
；
8
．
Use the purer gas
；
9
．
Replace tip
；
10
．
Clean the wire feeding tube
；
11
．
Fix the cable connected to the
ground tightly
；
11
．
Gas heater frosts
1. The input power fuses of the heater
(5A) is burned
；
2. The resistance wire of the heater is
broken
；
1. Replace the fuse with the same
type
；
2. Repair or replace the heater
；
ATTENTION
:
Only qualified technicians are allowed to perform troubleshooting work on the machine.If for any reason you do
not understand the test procedures or are unable to perform the tests/repairs safely, contact our service
department for technical assistance.
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