PLASMATECH SHARK 25, Руководство оператора

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13
Troubleshooting table
Defect Cause Remedy
Power supply switch (Pos. 7, Fig. A)
on with white LED indicator reporting
power supply off (Pos. 2, Fig. A)
• No power Verify:
• correct connection of the power supply cable
• correct connection of the
power supply cable plug
• the electrical plant to which the
plasma cutter is connected
• Defective power inverter • Replace
Yellow LED indicator for thermostatic
protection on (Pos. 4, Fig. A)
• Thermostatic protection triggered • Wait for it to reset after a few minutes
and reduce the work cycle time
Lack of air with torch button pressed • Defective power inverter • Replace
• Compressor breakdown or fault • Replace
Pilot arc does not go on when
torch button is pressed
• Defective power inverter (if red LED off) • Replace
• External torch nozzle unscrewed
or incorrectly mounted
• Reassemble or tighten torch nozzle
• Worn electrode and hood on torch • Replace
• Pilot arc resistor interrupted • Replace
• Torch button defective • Replace
If red plasma cutting cycle control
LED slow flashing (Pos. 3, Fig. A)
• Plant air pressure insufficient (<2.5 bar) • Verify the air compressor fro correct function
• Clean the air compressor air filter
• Verify that the power inverter
fuse has not burnt out
• External torch nozzle unscrewed
or incorrectly mounted
• Remount or tighten the torch nozzle
• Under-voltage or over-voltage • Power off the plant and check that the
power supply corresponds to the plaque
• Call in technical assistance
Common cutting defects
Defect Cause Remedy
Insufficient penetration • Cutting speed too high • Reduce speed
• Current too low • Increase current
• Ground wire connected wrong • Check ground wire connection
Main arc goes out • Cutting speed too slow • Increase speed
• Too much space between torch and piece • Reduce space
• Excessive erosion of electrode • Replace electrode
Excessive residues • Air pressure wrong • Regulate the air pressure reducer correctly
• Cutting speed too slow • Increase speed
• Hood hole eroded • Replace hood
• Spacer wrong • Reduce spacer
Hood overheated or black • Current too high • Reduce current
• Space between hood and piece too small • Increase space
• Air dirty • Clean air filter
• Excessive erosion of electrode • Replace electrode
Pilot arc intermittent or sparking • Air pressure wrong • Adjust reducer to the right pressure
• Air dirty, greasy, wet • Clean air filter
• Pilot arc current too low • Check the equipment pilot arc circuit