Youly Electric YL Powership MMA-250FI, Руководство оператора

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13
6 Basic Trouble Shooting
No. Description Possible Cause Remedy
1 Abnormal indicator Bad ventilation leads to
overheating protection
Improve ventilation
conditions
High environmental
temperature
Automatic recovery
after decreasing
Exceed rated duty cycle Replace potentiometer
2 Current knob broken Potentiometer damaged Replace it
3 Motor fan can’t work or low
rotational speed
Bad power switch Replace the switch
Bad fan Replace the fan
Led broken Check the circuit
4 No open circuit voltage Overheating See point 1
Bad power switch Replace the switch
5 Electrode holder cable is too
hot; output terminals are too
hot.
Capacity on electrode
holder is too small
Replace larger capacity
electrode holder
Cable is too thin Replace a proper cable
Socket is loosen Remove the oxide coat
and re-tight it
6 Power off Power capacity is not big
enough
Enlarge the capacity
Welding process Contact the supplier
7 Other problems Contact the supplier
Warning!
The machine has the function of prohibit switching power supply in rapid
succession within a short period of time for switching on and off. The power will not
open then (the indicator light is not on or the fan does not work or there is no-load
voltage). Shut down the power switch and resume back to normal after a few
minutes.