Arc Machines 415 WDR - Manual (Page 46)

Model 415
Operation Manual
Document No. 740084
Revision N
41
CAUTION
Always disconnect the input power cable from the junction box or wall-plug before cleaning.
DO NOT USE ANY SOLVENTS, SPRAY-ON CLEANERS OR WATER on any of the inside
parts. All outside surfaces may be cleaned with a soft cloth or sponge, damp, NOT
SOAKED, with a mild detergent solution.
4. INPUT/OUTPUT PANEL CONNECTIONS - Periodic inspection of the M-415 panel and cable
electrode, gas and water return quick-disconnects should be performed. Damaged, dented
or deformed connectors may cause poor or unsafe operation and water or gas leakage and
must be replaced.
5.14 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.
1. TEMP - The M-415 has internal temperature probes. If the Power Supply exceeds maximum
operating temperature 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. GAS - This fault will only occur at the beginning of or during a Weld Sequence. If the arc
Gas Flow through the system should stop or be too low a fault will occur.
Check the Gas Source (user supplied) is turned on and that adequate gas is available.
Check all Gas Hoses and connections for free flow this is usually the problem.
If there is no problem with the source or with hoses and connection then an internal failure of
the flow switch, solenoid or internal housing is possible. Contact an AMI Service
representative.
3. COOLANT - Monitors the coolant flow out of the torch cooling unit. If it is not at least 0.2 GPM
a fault will occur. Check the hoses and flow path of coolant to and from the weld head this is
usually the problem. If all looks good then an internal failure of the pump or flow switch is
possible, contact an AMI Service Representative.