MAINTENANCE
7-2
HT4001
Instruction Manual
INTRODUCTION
The HT4001, and all Hypertherm plasma systems, undergo rigorous testing prior to
shipment and should require little maintenance if proper installation and operation
procedures are followed.
In this section are: routine maintenance procedures, initialization and sequence of
operation flowcharts, an initial checks procedure, a troubleshooting guide to aid in
servicing the HT4001 system including a troubleshooting guide for the STATUS indica-
tors, a chopper module test procedure and a description of the relay board status LEDs.
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 Group at 1-800-647-9878.
WARNING
SHOCK HAZARD:
The large electrolytic capacitor(s) (blue-cased cylinder(s))
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 the capacitor(s) 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 capacitor(s).
Содержание HT4001
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