MAINTENANCE
powermax190c Service Manual
3-5
Troubleshooting
The complexity of the circuits require that service technicians have a working knowledge of chopper 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
Maintenance of the Powermax190c power supply consists of performing visual inspection and troubleshooting
procedures.
• Refer to the system wiring diagram when performing the troubleshooting procedures.
• To locate power supply components refer to Section 4.
• After the problem has been located and repaired, refer to the Powermax190c Operator Manual (803650) 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.
WARNING
ELECTRIC SHOCK CAN KILL
Disconnect electrical power before performing any maintenance.
All work requiring removal of the power supply cover must be performed by a
qualified technician.
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