Arc Machines 227 - Manual (Page 78)

MODEL 227
OPERATION MANUAL
Doc # 740063 Rev E
SECTION VII - CALIBRATION
7.6 SYSTEM FAULT CORRECTIONS
When a System Fault occurs prior to or during welding it is required for the operator
to clear the fault condition before welding. When a fault occurs during sequence or
attempting to sequence the FAULT SCREEN will appear.
Some faults are only temporary and the fault is corrected when the arc goes out but all
faults will cause the fault screen to appear and let the operator know why the
sequence was stopped.
The following is a general description of the cause of each type of fault and some
recommendations for correction. In all cases, when the fault is corrected the operator
must press the C key to clear the FAULT SCREEN. If the fault is truly corrected the
system will automatically return to the weld schedule it was on when the fault
occurred.
1. TEMP - The M-227 has internal temperature probes. If the Power Supply gets hot
the a fault occurs. This can occur only if there is some type of blockage of air
circulation, fan failure or component failure within the Power Supply OR THE
SYSTEM IS BEING OPERATED IN AN AMBIENT AIR TEMPERATURE
BEYOND ITS RATED 110 DEGREES F.
This Fault should only occur during an actual weld sequence. If it occurs when
the machine is not welding then a serious internal problem exists. In this case
turn the Power Supply OFF and call an AMI service representative.
If it occurs during welding, check for blockage of the air intakes on the side of the
machine and for cleanliness of the filters. They may need cleaning. If no
blockage exists and the filters are clean then cease all welding operations and call
an AMI Service representative.
2. INPUTAC - Monitors the available line current. If the system cannot supply the
desired DC amperage of the weld schedule it looks to see if the line voltage is
adequate for the amount of current.
7.8