Hypertherm Powermax45 Service Manual - Manual (Page 87)

TroubleshooTing and sysTem TesTs
powermax
45 Service Manual 5-11
Troubleshooting guide
See System tests on page 5-18 for detailed test procedures.
It is important to note, when troubleshooting a problem on the Powermax45, how the front panel LEDs operate. To help
diagnose transient problems, an illuminated or blinking LED, including the bottom bar on the gas pressure bar, may
continue to illuminate or blink for 10 to 20 seconds after the system is powered OFF. Once the system is powered ON,
the LED should not illuminate or blink if the fault has been cleared.
Also, note that there is no static gas pressure reading. So the gas pressure LEDs may not indicate a low pressure
situation if the gas was not connected when the system was powered ON. Attempting to fire the torch without the gas
connected will cause the bottom yellow gas pressure LED to blink.
Problem This may mean Cause Solution
The ON/OFF power switch
is set to ON (I), but the
power ON LED is not
illuminated.
There is insufficient voltage
to the control circuits or
a short-circuited power
component.
• The system has no
incoming voltage or
an improper incoming
voltage.
• The power board is faulty.
• Check to see that the
system is plugged into
an appropriately-sized
circuit and that the circuit
breaker has not been
tripped.
• Perform Test 1 – voltage
input on page 5-18
to check the incoming
voltage and the power
switch.
The power ON LED is
illuminated, the fault LED is
illuminated, and the bottom
LED on the gas pressure
bar is illuminated yellow and
is blinking.
There is insufficient gas
pressure to the machine.
• There is no gas attached
to the system.
• The gas supply line has a
restriction or the air filter
element is dirty.
• The reading at the
pressure transducer
is below the minimum
acceptable gas pressure.
• Ensure that the gas supply
is connected correctly.
• Check the gas supply line
for restrictions or damage.
• Check the air filter
element and replace it if
necessary.
• Perform Test 9 – pressure
transducer on page 5-28
to verify that the pressure
transducer functions
correctly.
AC