Hypertherm Powermax 125 Service Manual

144 Powermax125 Service Manual 808070
8 – Troubleshooting and System Tests
Power ON LED
blinks or goes out
while cutting.
A power component is
shorted.
• Faulty fan. • Perform Test 11 – Fan on page 164.
• Faulty power board
or IGBT.
•Perform Test 1 – Voltage input on
page 150, Test 2 – DC power bus on
page 152, or Test 3 – Output diodes
on page 154.
• Faulty DSP board.
The arc does not
transfer to the
workpiece.
Poor continuity exists
between the work lead and
the workpiece.
• The workpiece is
dirty.
• The ground clamp is
damaged.
• The pierce height
distance is too large.
• Clean the area where the ground
clamp contacts the workpiece to
allow a good metal-to-metal
connection.
• Inspect the ground clamp for damage,
and repair as necessary.
• The pierce height distance may be too
large. Move the torch closer to the
workpiece and fire the torch again.
Gas flows from
the torch at
power-up when
neither the torch
trigger nor a
remote start is
activated.
The electronic regulator,
power board, or control
board is faulty.
• Faulty electronic
regulator.
• Faulty power board.
• Faulty DSP board.
•Perform Test 9 – Electronic regulator
on page 162.
The incoming gas pressure is
too high.
• The gas pressure
from the compressor
or cylinder may be
too high.
• Check the gas supply to make sure
that it does not exceed 9.3 bar
(135 psi). If necessary, reduce the
pressure.
Problem Meaning Causes Solution

Hypertherm Powermax 125 Specifications

General

Output Current	30-125 A
Input Power	15.2 kW
Open Circuit Voltage	300 VDC
Gas Supply	Clean, dry, oil-free air or nitrogen
Input Power Cable Length	10 ft (3 m)
Rated Output Current	125 A
Gas Type	Air or nitrogen
Cutting Capacity	1-1/4 inch (32 mm)
Pierce Capacity	1 inch (25 mm)
Input Voltage	200-600 V, 3-PH
Duty Cycle	100% @ 125 A
Certifications	CSA
Maximum Clean Cut Thickness	1-1/4 inch (32 mm)
Cooling Method	Fan-cooled
Torch Options	Hand