Hypertherm Powermax105 Service Manual - Manual (Page 146)

TroubleshooTing and sysTem TesTs
8-8
powermax
105 Service Manual
DANgER
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 connected directly 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 in serious injury or death.
Hot PARtS CAN CAUSE SEVERE bURNS
• Allow the power supply to cool before servicing.
MoVINg blADES 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.