Hypertherm Powermax600 Service Manua - Manual (Page 36)

3-10
MAINTENANCE
powermax 600 Service Manual
WARNING
ELECTRIC SHOCK CAN KILL
• Turn off the power and remove the input power plug from its receptacle
before removing the cover from the power supply. If the power supply is
directly connected to a line disconnect box, switch the line disconnect to
OFF (O). In the U.S., use a "lock-out / tag-out" procedure until the service
or maintenance work is complete. In other countries, follow appropriate
national or local safety procedures.
• Do not touch live electrical parts! If power is required for servicing, use
extreme caution when working near live electrical circuits. Dangerous
voltages exist inside the power supply that can cause serious injury or
death.
• Do not attempt to repair the power board or control board. Do not cut away
or remove any protective conformal coating from either board. To do so
will risk a short circuit between the AC input circuit and the output circuit
and may result serious injury or death.
HOT PARTS CAN CAUSE SEVERE BURNS
• Allow the power supply to cool before servicing.
MOVING FAN CAN CAUSE INJURY
• Keep hands away from moving parts.
STATIC ELECTRICITY CAN DAMAGE CIRCUIT BOARDS
• Put on a grounded wrist strap BEFORE handling PC boards.
Visual Inspection - Internal
1. Set the power switch to O (off), unplug the power cord, and disconnect the gas supply.
2. Remove the cover of the power supply by removing the securing screws.
3. Inspect the inside of the power supply, especially on the side with the power board. Look for
broken or loose wiring connections, burn and char marks, damaged components, etc.
Repair or replace as necessary.
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