Description Of Front Panel Controls (See Section 6-1) - Miller Big Blue Duo Pro 700 X Owner's Manual

6-2.

Description Of Front Panel Controls (See Section 6-1)

Engine Starting Controls
1 Preheat Switch
Use switch to energize starting aid for cold
weather starting (see starting instructions
following).
2 Engine Control Switch
Use switch to start engine, select engine
speed, and stop engine.
In Run position, engine runs at weld/power
speed. In Run/Idle position, engine runs at
idle speed with no generator power or weld
load, and weld/power speed with load
applied.
NOTICE – Diesel engines in Miller equip-
ment are meant to operate optimally at mod-
erate to rated load. Using light or no load for
extended periods of time may cause wet-
stacking or engine damage.
To Start
NOTICE – Do not use ether.
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If engine does not start, let engine
come to a complete stop before at-
tempting restart.
Above 32° F (0° C): turn Engine Control
switch to Start. Release Engine Control
switch when engine starts.
Below 32° F (0° C): turn engine control
switch to Run position. Push Preheat switch
up for 15 to 30 seconds. Turn Engine Con-
trol switch to Start. Release Engine Control
switch and Preheat switch when engine
starts.
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Do not operate Preheat switch for
more than 60 seconds at a time.
To Stop: turn Engine Control switch to Off
position.
Weld Controls
3 Remote Control Receptacle
Use receptacle to connect remote controls,
wire feeders, and tools requiring 24 VAC.
When a remote control is connected to the
Remote receptacle, the Auto Remote Sense
(ARS) feature automatically switches volt-
age/amperage control to the remote control
(see Section 6-9).
With remote control connected, weld output
is determined by a combination of front pan-
el and remote control voltage/amperage
settings.
If no remote control is connected to the Re-
mote receptacle, the front panel Voltage/
Amperage control adjusts voltage and
amperage.
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Complete Parts List is available at www.MillerWelds.com
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If a remote device connected to Re-
mote Receptacle is faulty or is discon-
nected during operation, the meters
display CHEK REMT. Clear fault by
stopping and restarting the unit or by
turning Process/Contactor switch to
another position.
4 Process/Contactor Switch
See Section 6-3 for Process/Contactor
switch information.
5 Adjust Control/Select Button
Adjust Control
With Process/Contactor Switch in any
SMAW or GTAW process, turn Adjust con-
trol to adjust preset amperage. With Proc-
ess/Contactor switch in any FCAW or
GMAW process, turn Adjust control to adjust
preset voltage.
Select Button
Push the control to use as Select button.
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To access Arc Control setting, push
and hold Adjust control for 1 second,
then release. Rotate counterclockwise
to set softer arc control. Rotate clock-
wise to set stiffer arc control. Push Ad-
just control in and release to save Arc
Control setting. Arc Control setting will
time out after 5 seconds of inactivity.
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To access Service Menu, push and
hold Adjust control for 5 seconds, then
release. See Section 6-4 for Service
Menu operation. Service Menu will
time out after 5 seconds of inactivity.
Weld Meters
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Weld meters also work in combination
to display troubleshooting error codes.
6 DC Voltmeter
Voltmeter displays preset voltage (GMAW/
FCAW welding) with contactor off, and ac-
tual output voltage with the contactor on.
Voltmeter displays voltage at the weld out-
put terminals, but not necessarily the weld-
ing arc due to resistance of cable and
connections.
To set voltage, turn Process/Contactor
switch to GMAW or FCAW position. Turn V/
A control until desired voltage is displayed
on Voltmeter. When welding is finished, volt-
meter displays average weld voltage and
then defaults to preset voltage.
7 DC Ammeter
Ammeter displays preset amperage (Stick
and TIG only) when not welding, and actual
output amperage when welding.
To set amperage, turn Process/Contactor
switch to Stick or TIG position. Turn V/A
control until desired amperage is displayed
on Ammeter. When welding is finished,
ammeter displays average weld amperage
and then defaults to preset amperage.
8 Arc Control Meter
Displays current Arc Control setting. Default
value for all processes is 0. Arc Control set-
tings adjust: Soft/Stiff for SMAW processes,
Auto Stop for GTAW processes, and induc-
tance for FCAW and GMAW processes. For
softer settings, the LEDs to the left of the
star illuminate. For stiffer settings, the LEDs
to the right of the star illuminate. No Arc
Control settings are accessible for GTAW
Remote. See Section 6-5.
Other Receptacles
9 USB Receptacle
Allows software updates from a USB drive
(see Section 6-10). A summary file of re-
corded data from the unit will be saved to a
USB drive that is inserted (see Section 6-
11).
Indicator Lights
10 Setup Light
Illuminates when in the Service Menu.
11 In Use Light
Illuminates when connected to an ArcReach
accessory.
12 Arc Control Light
Illuminates when in the Arc Control settings.
Engine Gauges, Meters, And Lights
13 Fuel Gauge
Use gauge to check fuel level.
14 Engine Service Indicator Lights
Notifies user that engine oil service is due.
Upper LED illuminates when engine oil
change hours are between 49-1. Lower LED
illuminates when oil change hours are 0 or
less.
15 Welder Selector Switch
NOTICE – Do not switch under load.
Use switch to select Dual Operator or Single
Operator welding mode.
Place switch in Welder A/Welder B (dual op-
erator) position for CC and CV output from
Welder A (left) and Welder B (right) weld
output terminals. Control the weld output
from the terminals on each side using the
weld controls on that same side.
Place switch in Welder A (single operator)
position for weld output from Welder A (left)
weld output terminals only.
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Welder B (right) weld output terminals
are disabled in Single Operator mode.
Connect only to Welder A (left) termi-
nals for Single Operator operation.
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