Lincoln Electric IM536-D - Manual (Page 21)

SP-125 PLUS
B-7 OPERATION
OVERLOAD PROTECTION
Output Overload
The SP-125 Plus is equipped with a circuit breaker
which protects the machine from potential damage
from excessive output current. The circuit breaker but-
ton will extend out when tripped. The circuit breaker
must be manually reset.
Thermal Protection
The SP-125 Plus duty cycle is exceeded a thermostat
will shut off the output until the machine cools to a nor-
mal operating temperature. This is an automatic func-
tion and is self resetting.
Wire Feed Overload Protection
If the SP-125 Plus has an automatic electronic protec-
tion circuit to protect the wire feed motor. If excessive
motor overload occurs (due to excessive feeding
force, jammed drive rolls, or shorted motor leads) the
circuit will shut down the wire feed motor and the
welding power output.
The wire feed shut-down circuit will reset automatically
when the gun trigger is released. However shut-down
will reoccur if the overload situation is not corrected.