HySpeed HT2000LHF Instruction Manual 5-1
6
Section 5
MAINTENANCE
Introduction
Hypertherm assumes that the service personnel performing the troubleshooting testing are high-level
electronic service technicians that have worked with high voltage electro-mechanical systems. Knowledge
of final isolation troubleshooting techniques is also assumed.
In addition to being technically qualified, maintenance personnel must perform all testing with safety in
mind. Refer to the Safety section for operating precautions and warning formats.
If you need additional assistance or need to order parts, call our Customer Service or Technical Service groups
listed at the front of this manual.
WARNING
SHOCK HAZARD: The large chopper capacitors store large amounts of energy in the form of
electric voltage. Even if the power is off, dangerous voltages exist at the capacitor terminals,
on the chopper, and the diode heatsinks. Never discharge capacitors with a screwdriver or
other implement…explosion, property damage and/or personal injury will result. Wait at least
five minutes after turning the power supply off before touching the chopper or the capacitors.
Routine Maintenance
Torch and Torch Leads (See also Torch Coolant Draining at the end of this section)
Inspection
Inspect the torch and torch leads on a routine basis.
• The torch consumable parts and torch main body should always be inspected prior to cutting. Worn or
damaged parts can cause gas and water leaks which can affect the cut quality. Check for pitting and burn
marks on the consumable parts and replace them, if necessary. See Changing Consumable Parts in
Section 4.
• Ensure that all connections are tight, but do not overtighten.
• The torch leads should be checked occasionally for cracking and damage.
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