Operation, Machine and circuit protection – Lincoln Electric IDEALARC CV-300 User Manual
Page 23
B-6
OPERATION
B-6
MACHINE AND CIRCUIT
PROTECTION
The CV-300 Control PC Board has built-in diagnostic
routines to alert the operator when trouble exists.
When a trouble condition occurs, the CV-300 meter will
display an error code, in the form “EXX”’ where “XX”
refers to a specific error. See
Section for an explanation of the error codes.
The power source is thermostatically protected against
overload or insufficient cooling. If the machine is over-
loaded, the thermostat will open, thermal protection
indicator light will turn on, and the output will be zero.
The fan will continue to run and auxiliary power will still
be available. The thermostat will remain open until
machine cools, at which time it will close and the out-
put will again be available.
The CV-300 is electronically protected against over-
loads and accidental short circuits. The overload pro-
tection circuit automatically reduces the output current
to a safe value when an overload is detected. If the cir-
cuitry senses a short circuit, it will shut off the CV-300
output. The short circuit protection circuit can be reset
by turning the CV-300 Power Switch OFF for at least
10 seconds. Remove the short before turning the
Power Switch ON again.
IDEALARC CV-300