ESAB Migmaster 275, Instruction Manual

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WelD conDItIon possIBle cause reMeDY
13. Wire sticks into the puddle a. Incorrect termination technique. a. Pull the gun back slightly after
at the end of weld. releasing the gun trigger. Install and
adjust optional Burn Back module.
b. Voltage setting too low. b. Increase voltage setting.
c. High wire feed speed conditions. c. Install and adjust optional Burn Back
module.
14.Wire does not feed; motor a. Kink, etc. in wire, or wire bound a. Straighten; or feed wire until
running (drive roll turns). on reel. clear and cut off.
b. Wire freezing to contact tip b. Free freeze, or remove contact
(burnback). tip feed wire until clear cut end free,
and replace tip.
c. Clogged liner. c. Replace liner.
15.Wire does not feed; a. Motor a. With wire speed dial on 10,
motor NOT running press trigger. If voltage
(drive roll does not turn). appears across motor leads
but motor does not run, check
motor gears and commutator
areas.
b.Power switch S3 and fuses. b. With S3 ON, if voltage
across terminal 1 and 3 is 24 VAC,
switch and fuses are good.
c. Speed Potentiometer (POT). c. Check for 1K ohms across
POT outside terminals.
d. Malfunctioning speed control board. d. Check board voltages
(Para 5.3.1 b. and c.)
16.Wire feed does not stop. a. Torch trigger switch. a. Check continuity of Torch trigger
circuit; check to see if trigger lever
is stuck in “ON” position.
b. Malfunctioning relay (K3). b. Check for proper action.
17.Gas continues to flow a. Gas solenoid valve stuck open. a. Tap solenoid or click on and off
after trigger release. to clear valve.
sectIon 5 serVIce