Section 11 − Troubleshooting; Front Panel Display Code Information - Miller TRAILBLAZER 302 AIR PAK Owner's Manual

SECTION 11 − TROUBLESHOOTING

11-1. Front Panel Display Code Information

Left Display Right Display
ON 25 − 304
0 25 − 304
13 − 35 0
HRS XXXX
OIL XXX
RPM XXXX
AIR OFF
AIR ON
COMP TEMP
OVER PRES
AUTO CAL.
RE−S TART
All Segments On All Segments On
Description
Code is displayed when engine is running, Engine Control switch is in Run
Preset Weld Current or Auto Speed position, Process/Contactor switch is in Electrode Hot −
Stick or TIG position, and Compressor switch is in Off or On positions.
Code is displayed when engine is running, Engine Control switch is in Run
Preset Weld Current or Auto Speed position, Process/Contactor switch is in Remote − Stick or
TIG position, and Compressor switch is in Off or On positions.
Code is displayed when engine is running, Engine Control switch is in Run
or Auto Speed position, Process/Contactor switch is in Electrode Hot −
Preset Weld Voltage
Wire or Remote − Wire position, and Compressor switch is in Off or On
positions.
Code is displayed when Engine Control switch is in Run or Auto Speed
Engine Or Compressor
position and Compressor switch is in Engine Hours or Compressor Hours
Total Operating Hours
position. (Engine need not be running to display code.)
Hours Remaining Until Code is displayed when Engine Control switch is in Run or Auto Speed
Recommended Oil position and Compressor switch is in Engine Oil Change or Compressor Oil
Change For Engine Or Change position. (Engine need not be running to display code.) Display
Compressor shows negative hours when oil change is overdue.
Code is displayed when engine is running, Process/Contactor switch is in
Engine Speed Electrode Hot − Stick position, and Engine Control switch is toggled
between Run and Auto Speed positions three or four times.
Before start-up, code is displayed when Engine Control switch is in Run or
Auto Speed position and Compressor switch is in Off position. Code is also
displayed for three seconds when Compressor switch is moved to Off posi-
Air Compressor Off
tion while engine is running. (Display then returns to appropriate weld dis-
play.)
Before start-up, code is displayed when Engine Control switch is in Run or
Auto Speed position and Compressor switch is in any On position. Code is
Air Compressor On also displayed for three seconds when Compressor switch is moved to any
On position while engine is running. (Display then returns to appropriate
weld display.)
Compressor Code is displayed when compressor has stopped because compressor oil
Over-Temperature temperature exceeded 240
Compressor Code is displayed when compressor has stopped because compressor air
Over-Pressure pressure exceeded 170 PSI (1172 kPa).
Code is displayed for about six seconds after start−up as the electronic
Auto-Calibration governor calibrates itself by running the engine at an elevated speed for a
short period. The machine provides no output until the display changes.
Code is displayed when unit has stopped due to generator overload or
detection of a fault that could cause damage. Turn Engine Control switch
Restart
Off and then restart. Check all outputs and connections after restarting. If
code is displayed again have unit checked by an Authorized Service Agent.
During engine cranking all LED segments are turned on for test purposes.
Bulb Test
Observe the displays during cranking to determine if an indicator is faulty.
How/When Code Is Displayed
° °
F (116 C).
OM-229 930 Page 51