Hypertherm Powermax30 AIR Service Manual - Manual (Page 70)

70 Powermax30 AIR Service Manual 808850
5 – Troubleshooting and System Tests
The cut quality is poor,
or the cut does not
sever the metal. • The consumables are worn or
damaged.
• The work lead connection is poor. The
work lead may be damaged or not
properly connected to the workpiece.
• The amperage adjustment knob is set
too low.
• The power board is producing low
current and may be faulty.
• The extension cord is too long, is
damaged, or is not capable of
delivering sufficient power to the
power supply.
• Inspect the consumables and replace
if necessary.
• Reposition the work lead on the
workpiece.
• Clean the workpiece surface to make
a better connection with the work
lead.
• Inspect the work lead and replace if
necessary.
• If your input circuit is capable, turn the
amperage adjustment knob to a
higher setting.
• Perform Test 2 – power board voltage
checks on page 80 and
Test 3 – VBUS and voltage balance
on power board on page 82.
• Operate the system without using an
extension cord. If you must use an
extension cord, use a heavy
conductor cord of the shortest
possible length. See
Extension cord
recommendations on page 31.
The circuit breaker trips
frequently while you are
cutting. • The amperage adjustment knob is set
too high for the input circuit.
• The wrong consumables are being
used.
• The input circuit is not delivering
sufficient power to the power supply.
• The operator is stretching the arc by
holding the torch too far from the
workpiece when cutting.
• The extension cord is too long, is
damaged, or is not capable of
delivering sufficient power to the
power supply.
• Turn down the cutting current. See
Step 3 – Adjust the output current on
page 45.
• Make sure the correct consumables
are installed for this power supply and
torch. See
Consumable use on
page 35.
• Operate the system on a 240 VAC
input circuit whenever possible.
• Avoid stretching the arc. Drag the
torch on the workpiece. See Edge
start on a workpiece on page 52.
• Operate the system without using an
extension cord. If you must use an
extension cord, use a heavy
conductor cord of the shortest
possible length. See
Extension cord
recommendations on page 31.
• Make sure nothing else is drawing
power on the same circuit.
Problem Possible causes Possible solutions