Troubleshooting; Power Source Problems - ESAB EMP 210 Instruction Manual

8 TROUBLESHOOTING

8 TROUBLESHOOTING
8.1

Power source problems

Table 22: Power source problems
Type of fault
Electricity supply is ON, the
power indicator is
illuminated, however, the
power source will not start
welding when the torch
trigger switch is pressed.
Fault indicator is
illuminated and the power
source will not start welding
when the torch trigger
switch is pressed.
The power source will not
feed wire in MIG mode.
Welding wire continues to
feed when the torch trigger
is released.
Welding arc cannot be
established in MIG mode.
Inconsistent wire feed.
0463 815 101
Cause
The power source is not in the
correct mode of operation.
Faulty torch trigger.
Duty cycle of the power source
has been exceeded.
Electrode wire stuck in conduit
liner or contact tip (burnback
jam).
Internal fault in the power
source
The trigger mode selection
switch is in 4T latch mode.
The torch trigger leads
shorted.
MIG gun polarity lead is not
connected into a welding
output terminal.
Poor or no work lead contact.
Worn or dirty contact tip.
Worn feed roll.
Excessive brake tension on
wire reel hub.
Worn, kinked or dirty conduit
liner.
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69
Corrective action
Set the power source to the
correct mode of operation
with the process selection
switch.
Repair or replace torch
trigger switch/lead.
Leave the power source
switched ON and allow it to
cool down. Do not start
welding until the fault
indicator is turned off.
Check for clogged / kinked
MIG gun conduit liner or
worn contact tip. Replace
faulty components.
Contact an authorised ESAB
service technician.
Change the trigger mode
selection switch from 4T
latch mode to 2T normal
mode.
Repair or replace the torch
trigger switch/lead.
Connect the MIG gun polarity
lead to either the positive
welding output terminal or
the negative welding output
terminal as required.
Clean work clamp area and
ensure good electrical
contact.
Replace if necessary.
Replace.
Reduce brake tension on
spool hub.
Clean or replace the conduit
liner.
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