Safety Instructions; Additional Safety Precautions; Engine Operation - Lincoln Electric RANGER 405D Operating Manual

Safety Instructions

Read and understand this entire section before operating your
Vantage.
W A R N I NG
Do not attempt to use this equipment until you have
thoroughly read all operating and maintenance manuals
supplied with your machine. They include important safety
precautions, detailed engine starting, operating and
maintenance instructions and parts lists.
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such
as output terminals or internal wiring.
• Insulate yourself from the work and
ground.
• Always wear dry insulating gloves.
ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or vent
exhaust outside.
• Do not stack anything near the engine.
MOVING PARTS can injure.
• Do not operate with doors open or guards
off.
• Stop engine before servicing.
• Keep away from moving parts.
Only qualified personnel should operate this equipment.
VRD (Voltage Reduction Device)
Welding power sources generally have an Open Circuit Voltage
(i.e. the voltage at the welding output terminals whilst not welding)
in the ranges of 35-115VDC. Welding machines for stick welding
(MMAW) and similar constant current (CC mode) processes,
supply a higher open circuit voltage between the electrode and
the work when the welding machine is switch on and ready to
commence welding. These welding machines have a drooping
characteristic, with the open circuit voltage higher (typically
60-80V) than when the arc is established and welding current is
drawn (20-35V).
Consequently, the greatest danger occurs when handling the
electrodes and the electrode holder between welding operations,
such as when changing electrodes.
Welding machines for MIG (GMAW & FCAW) have a flat constant
voltage (CV) characteristic, generally with a lower open circuit
voltage (30-60V). Also, the current is turned on & off by a gun
trigger, which also controls the wire feed. Therefore, the welder is
not exposed to open circuit voltage, unless the trigger is turned on
and the wire is feeding. Also, electrodes are not changed as
frequently as for stick welding (MMAW).
For these reasons VRD/ROCV's are
incorporated into the stick welding mode (CC) of welding
machines being used in environments with high-risk of electric
shock.
IMA 608D
OPERATING INSTRUCTIONS
more commonly
Ranger 405D
Safety
This reduction of the voltage supplies a safer level of voltage
when an arc is not being struck or when an electrical resistance
less than the welder's body resistance have been detected. All
V R D 's are only an aid to safety and personal protective
equipment and safe working practices must be observed at all
times. The risk of electric shock during welding from a correctly
installed and maintained welding machine is negligible, provided
that sensible precautions are taken by the user and correct safe
working procedures are followed. All parts of the output circuit
should be considered electrical alive, and consequently welders
should ensure that no part of their body is placed in such a
position as would complete a path through it for the passage of
electric current. Safe working procedures should always be
followed whether a VRD is fitted or not.

Additional Safety Precautions

Always operate the welder with the hinged door closed and
the side panels in place as these provide maximum
protection from moving parts and insure proper cooling air
flow.

Engine Operation

Engine Control – Function and Operation
Key Switch
The key switch incorporates:
a) 'Pre heat' position:- Turn the key anticlockwise and hold for
15 seconds (30 seconds if temperature is below 0°C).
W A R N I NG
Under no circumstances should ether or other starting
fluids be used in this engine.
b) OFF position:- the vertical position where the key can be
inserted & removed, shown "OFF". When in this position the
fuel flow to the injector pump is stopped to shut the engine
down.
c) "RUN" position:- turn the key clockwise to position shown
"RUN". When in this position the fuel solenoid & other
electrical accessories are energised.
d) 'Start' position:- turn key clockwise past the on position. When
in this position the starter motor is energised. Hold in this
position until the engine starts and then release the key. Do
not engage this position while the engine is running as this
can cause damage to the ring gear and/or starter motor.
(Also see 'Starting and Stopping the Engine' section in this
manual).
Battery charge light
The yellow battery charger light is off when battery charging
system is functioning normally. If the light turns on while the
engine is running, the fan belt may be broken or the
alternator/regulator may be defective.
Engine Hour Meter
Allows machine maintenance procedures to be adhered to by
recording engine operating hours.
Fuel Gauge
Provides indication of the amount of fuel in the fuel tank.
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