Hypertherm Powermax30 AIR Service Manual - Manual (Page 63)

Powermax30 AIR Service Manual 808850 63
5 – Troubleshooting and System Tests
Troubleshooting guide
This guide provides the most common causes and solutions.
 Before troubleshooting, study the Powermax30 AIR schematic on page 222 and understand the Theory of operation
on page 55.
 Before purchasing any major replacement component, verify the problem with Hypertherm Technical Service or the
nearest Hypertherm repair facility listed in the front of this manual.
 See System tests on page 73 for detailed test procedures.
Power LED faults
The ON/OFF power switch is set to ON (I),
but the power ON LED does not illuminate.
Possible causes Possible solutions
 The system has no incoming voltage or an
improper incoming voltage.
 The power cord, power switch, or power
board is faulty.
 Make sure the electrical power is connected
to an appropriately sized circuit.
 Make sure the system did not trip the circuit
breaker.
 Perform Test 1 – voltage input on page 78.
The power ON LED illuminates, but no fault LEDs illuminate, and no gas
flows when you pull the torch trigger.
Possible causes Possible solutions
 The start signal is not reaching the control
board due to:
 Damaged torch or torch lead
 Faulty power board
OR
 Faulty control board
 Inspect the torch and torch lead, and
replace if necessary.
 Make sure the control board start LED
illuminates when you pull the torch trigger. If
it does not, perform
Test 6 – plasma start on
page 87.
AC
AC O
AC