Status/Trouble Lights - Miller Electric Spectrum 875 Auto-Line Owner's Manual

7-6. Status/Trouble Lights

Light
Power On
Off
Pressure/Cup/T emp
Flashing rate is steady for 15 seconds or until torch trigger
Power
is pressed again, whichever comes first.
Repetitive flashing rate of two quick cycles, then a one
Power
second pause.
Pressure On
Flashing rate is steady for 15 seconds or until torch trigger
Pressure
is pressed again, whichever comes first.
Repetitive flashing rate of two quick cycles, then a one
Pressure
second pause for a 15 second period.
On
Cup
Flashing rate is steady for 15 seconds or until torch trigger
Cup
is pressed again, whichever comes first.
Repetitive flashing rate of two quick cycles, then a one
Cup second pause for a 15 second period or until torch trigger
is pressed again, whichever comes first.
Repetitive flashing rate of three quick cycles, then a one
second pause for a 15 second period or until torch trigger
Cup
is pressed again, whichever comes first.
Temperature On
On (indefinitely)
Temperature
Flashing rate is steady (indefinitely).
Temperature
For system troubleshooting see Section 7-7 and Section 7-8.
.
A complete Parts List is available at www.MillerWelds.com
P O
V
P R
C U
T E
Condition
W E R
E S S U R E
P
M P
Status/Possible Cause
Input power is okay.
When Power light is on, system is normal if these lights
are off.
Input power was above 300 volts AC or below 156 volts
AC, but has returned to normal.
Input power is above 300 volts AC or below 156 volts AC
or precharge PTCs have overheated.
No or low [below 40 psi (276 kPa)] input pressure.
Regulated pressure in the unit is low.
Regulated pressure in the unit is high.
Torch cup is loose or off. Once cup is finger tightened, unit
power must be cycled off and back on again.
No arc was established. Plasma system failed to strike an
arc.
No pilot arc established possibly due to a loss of current.
Consumables in torch failed to separate during pilot arc
possibly due to being stuck.
Power source overheated.
Power source temperature sensors may have failed or
ambient temperature is below -22 F (-30 C).
Power source temperature sensor provided inaccurate
readings, but returned to normal. Unit power must be
cycled off and back on again.
OM-242 880 Page 43