Powermax – Hypertherm Powermax105 Service Manual User Manual
Page 16
Table of ConTenTs
xii
powermax
105 Service Manual
Test 1 – Voltage input .............................................................................................................................................................. 8-43
Test 2 – DC Power Buss ........................................................................................................................................................ 8-44
Test 3 – Output diodes............................................................................................................................................................ 8-46
Test 4 – Inverter and PFC temperature sensor .................................................................................................................. 8-47
Test 5 – Flyback circuit (DC minor voltages) ..................................................................................................................... 8-50
Test 6 – Torch stuck open (TSO)/torch stuck closed (TSC) ......................................................................................... 8-52
Test 7 – Start signal ................................................................................................................................................................. 8-54
Test 8 – Torch cap switch ...................................................................................................................................................... 8-55
Test 9 – Electronic regulator .................................................................................................................................................. 8-56
Test 10 – Pressure sensor ...................................................................................................................................................... 8-57
Test 11 – Fan ............................................................................................................................................................................. 8-58
Test 12 – AUX switch .............................................................................................................................................................. 8-59
Section 9
Power Supply Component Replacement
Replacing the air filter element ............................................................................................................................................................9-3
Replacing the work lead connector ....................................................................................................................................................9-3
Installing the optional filter kit ...............................................................................................................................................................9-3
Replacing the power supply cover .....................................................................................................................................................9-3
Replacing the component barrier ........................................................................................................................................................9-3
Installing the machine interface cable with voltage divider board ...............................................................................................9-4
Installing the machine interface cable ................................................................................................................................................9-4
Installing the RS485 serial interface cable .......................................................................................................................................9-4
Replacing the power cord ....................................................................................................................................................................9-5
Replacing the strain relief connector ..................................................................................................................................................9-5
Replacing the power switch .................................................................................................................................................................9-6
Replacing the control board .................................................................................................................................................................9-6
Replacing the DSP board .....................................................................................................................................................................9-6
Replacing the power board ..................................................................................................................................................................9-7
Replacing the input diode bridge ........................................................................................................................................................9-7
Replacing the output diode bridge .....................................................................................................................................................9-8
Replacing the pilot arc IGBT ................................................................................................................................................................9-8
Replacing the inverter IGBT module ..................................................................................................................................................9-8
Replacing the PFC IGBT module .......................................................................................................................................................9-9
Replacing the snubber resistor ............................................................................................................................................................9-9
Replacing the damper resistor .......................................................................................................................................................... 9-10