Hypertherm Powermax 125 Service Manual

146 Powermax125 Service Manual 808070
8 – Troubleshooting and System Tests
Arc goes out
while cutting or
intermittently will
not fire.
The arc lost contact with the
workpiece.
• The work lead or
work lead connection
may be faulty.
• The material being
cut may require the
use of continuous
pilot arc mode.
• If you are cutting expanded metal,
grate, or any metal with holes, set the
mode switch to continuous pilot arc
mode.
• Check for loose connections at the
ground clamp and at the power
supply.
• Reposition the work lead on the
workpiece.
• Clean the cutting surface to allow a
better connection with the work lead.
Faulty fan. • The fan could be
overloading the
flyback circuit.
•Perform Test 5 – Flyback circuit (DC
minor voltages) on page 156 and
Test 11 – Fan on page 164.
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