Tweco FP-165 Mini MIG User Manual
FIREpOwER Fp-125, 135, 165
A Weld beads too small A Decrease travel speed
B Weld penetration nar-
row and deep
B Reduce current and voltage and increase MIG
torch travel speed or select a lower penetration
C Excessive weld stress-
C Increase weld metal strength or revise de-
D Excessive voltage
D Decrease voltage by reducing the voltage
E Cooling rate too fast E Slow the cooling rate by preheating part to be
welded or cool slowly.
Cold weld puddle
A Faulty rectifier unit A Have an Accredited THERMAL ARC Service
Agent to test then replace the faulty compo-
B Loose welding cable
B Check all welding cable connections.
C Low Primary Voltage C Contact supply authority
Arc does not have a crisp
sound that short arc ex-
hibits when the wirefeed
speed and voltage are ad-
The MIG torch has been
connected to the wrong
voltage polarity on the
Connect the MIG torch to the positive (+) welding
terminal for solid wires and gas shielded flux cored
wires. Refer to the electrode wire manufacturer for
the correct polarity.
9 Thermal overtemperature
welding, but fan motor
continues to run.
The machine duty cycle
has been exceeded.
Allow the fan to run, to allow the machine to cool
10 Thermal overtemperature
light illuminates in less
than 30 seconds during
Fan has stopped run-
ning or fuse on PCB has
Have an accredited THERMAL ARC Service Agent
replace the fan motor or fuse.