Lincoln Electric VANTAGE 520 SD Operator's Manual page 23

VANTAGE ® 520 SD
Idler Operational exceptions
When the WELDING TERMINALS switch is in the "Remotely
Controlled" position or the MODE SELECTION switch is in the
ArcLink ® position the idler will operate as follows:
• When the triggering device (Amptrol, Arc Start Switch, etc.) is
pressed the engine will accelerate and operate at full speed
provided a welding load is applied within approximately 12
seconds.
• If the triggering device remains pressed but no welding load is
applied within approximately 12 seconds the engine may
return to low idle speed.
• If the triggering device is released or welding ceases the
engine will return to low idle speed after approximately 12
seconds.
2. START SWITCH
Energizes the starter motor to crank the engine. With the engine
"Run / Stop" switch in the "Run" position, push and release the
Start button to start the engine:
• this switch has an amber light (Top of switch) to indicate
Glow light, this engine will automatically apply power to
the glow circuit and indicator light will turn off when glow
is completed. (Engine will crank but will not start until
glow cycle is completed)
• this switch also has a red light (Bottom of switch). It will
light up when there are faults with the engine. Field
Service Shop will need to connect to diagnostic plug to
read error codes.
3. DASH BOARD GAUGE
The dash board gauge displays 5 gauges:
3a. OIL PRESSURE
The gauge displays the engine oil pressure when the
engine is running.
3b. ENGINE TEMPERATURE
The gauge displays the engine coolant temperature.
3c. HOUR METER
The hour meter displays the total time that the engine
has been running. This meter is a useful indicator for
scheduling preventive maintenance.
3d. FUEL LEVEL
Displays the level of diesel fuel in the fuel tank.
3e. BATTERY VOLTAGE INDICATOR
Displays the battery voltage and indicates that the
charging system is functioning properly.
4. OUTPUT CONTROL-
output voltage or current as displayed on the digital meters for
the five welding modes.
5. VRD (Voltage Reduction Device) INDICATOR LIGHTS-
front panel of the VANTAGE ®
when lit indicates OCV(Open Circuit Voltage) is equal to or
and a green light when lit indicates
30V.
The VRD "On/Off" switch inside the control panel must be "On" for the
VRD function to be active and the lights to be enabled. When the machine
is first started with VRD enabled, both lights will illuminate for 5 seconds.
These lights monitor the OCV(Open Circuit Voltage)
times. When not welding the green light will illuminate indicating that the
VRD has reduced the OCV to less than 30V. During welding the red light
will illuminate whenever the arc voltage is equal to or greater than 30V.
This means that the red and green light may alternate depending on the
weld voltage. This is normal operation.
If the red light remains illuminated or both VRD lights flash when not
welding, the VRD is not functioning properly. Please refer to your local
field service shop for service.
If the VRD is turned "On" and the lights don't come "On", refer to the trou-
ble shooting section.
B-3
OPERATION
The OUTPUT dial is used to preset the
520 SD are two indicator lights. A red light
greater than 30V
OCV(Open Circuit Voltage) is less than
and weld voltage at all
On the