Hypertherm Powermax1650 Service Manual - Manual (Page 32)

MAINTENANCE
powermax1650 Service Manual
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TROUBLESHOOTING
The complexity of the circuits requires that service technicians have a working knowledge of inverter power supply
theory. In addition to being technically qualified, technicians must perform all testing with safety in mind.
If questions or problems arise during servicing, call the nearest Hypertherm Technical Services Department listed in
the front of this manual.
Test Equipment
• Multimeter
Troubleshooting Procedures and Sequence
When performing the troubleshooting procedures,
• Refer to Section 6 for the system wiring diagram;
• Refer to Section 4 to locate power supply components;
• Refer to Section 5 for torch components.
After the problem has been located and repaired, refer to the
Sequence of Operation flow diagram in this section to test the power
supply for proper operation.
Visual Inspection – External
1. Inspect the outside of the power supply for damage to the cover and external components.
2. Inspect the torch and the torch lead for damage.
Power OFF &
Disconnected
Visual Inspection
External
Power ON
Visual Inspection
Internal
Resistance Checks
Troubleshooting
Guide
Voltage Checks