https://www.XPOtool.com
Item 63319
Page 8
The Tool Experts
05 2022-1
Technical specifications
Model name
MMA-110
Intake voltage
(V)
1~220
V
Frequency
(
㎐
)
50
Current
(A)
100
No-load voltage
(V)
26
Relative operating cycle
(%)
35
Welding wire
max. 1
kg (with fluxing agent core)
Isolation class
F
IP code
IP21S
Troubleshooting
Problem
Proposed solution
Machine switched on, yet power LED is off, fan
does not work, there is no welding performance
1.
Check if the power switch is switched off.
2.
Check for loose cables inside the ma-
chine.
3.
Missing input power
4.
Defective fan
Display normal, fan is working normally, yet there
is no output current.
1.
Check if the inner cable is in good condi-
tion.
2.
Check if the inner connections are in good
condition.
3.
Check if the power LED is lit. If not, there
is a circuit problem.
Machine switched on, yet fan does not work, there
is no output current
1.
Defective external power supply
2.
Damage to the supply cable
Machine switched on, normal welding process, yet
protection switch engaged suddenly
1.
Too high intake current due to electric leak
2.
IGBT or bridge damaged
Machine switched on, yet output current too low
during welding
1.
Insufficient cable connection of the poten-
tiometer
2.
Potentiometer damaged
3.
Error in the circuit
Electrode holder getting very hot
Nominal current of electrode holder beneath actual
working current; replace with electrode holder with
higher nominal current.
Excess of welding spatters during MMA welding.
Wrong output polarity; reverse polarity.