SYMPTOM |
| CHECK |
The air begins to flow, the “OUTPUT ON” LED lights | 1. | Check the torch consumables to be sure they |
for a brief period, but no arc is established. |
| are in tight, not dirty or greasy, and in good |
|
| shape. Replace the consumables if necessary. |
| 2. | Check that CR2 engages. |
| 3. | Blow off the components in the upper compart- |
|
| ment with compressed air. |
| 4. | Check pilot to 391 for 1.5 ohm resistance. |
| 5. | Check both 3 ohm 300 watt resistors. |
| 6. | Replace Control PC board. |
|
|
|
The arc starts but sputters badly. | 1. | Check the torch consumables to be sure they |
|
| are tight, not dirty or greasy and in good shape. |
|
| Replace if necessary. |
| 2. | Check air supply for oil or a great deal of water. |
|
| If there is oil or a great deal of water, the air |
|
| must be filtered or the machine switched to |
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| nitrogen or bottled air. |
| 3. | Check air pressure. It should be set to 60 psi |
|
| (414 kPa) while air is flowing. |
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|
|
The “THERMAL” LED is lit. The “MALFUNCTION” | 1. | The machine is overheated. Allow it to cool and |
LED is blinking. |
| reset. The air intakes of the machine must not |
|
| be blocked, or this will become a nuisance. |
|
| Machine will cool much faster if left on with |
|
| output off. |
|
|
|
The “MALFUNCTION” LED is blinking two short | 1. | The torch connected to the machine is not |
flashes in close succession followed by a one second off |
| connected properly or has been damaged. |
period. |
| Check all connections and look for sign of |
|
| damage to the assembly. |
| 2. | The connected torch is not designed for use |
|
| with this machine, see Specifications Summary |
|
| for listing of valid torches for this machine. |
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|
|
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– 17 –