Lincoln Electric IM10124 RED-D-ARC FX450 - Manual (Page 10)

A-3 INSTALLATION A-3
VRD™ (VOLTAGE REDUCTION DEVICE)
The VRD™ feature provides additional safety in the CC-
Stick mode. The VRD™ reduces the OCV (Open Circuit
Voltage) at the welding output terminals while not welding to
less than 35VDC peak.
The VRD™ requires that the welding cable connections be
kept in good electrical condition because poor connections
will contribute to poor starting. Having good electrical con-
nections also limits the possibility of other safety issues
such as heat-generated damage, burns and fires.
The machine is shipped with VRD™ “Disabled”. The VRD™
function can be disabled or enabled via dip switches on the
control P.C. board. Dip switch setting will differ depending
on input voltage.
The control board and dip switches can be accessed by
removing the case top and side as shown in the Operation
Section figure B.3.
SELECT SUITABLE LOCATION
LOCATION AND VENTILATION FOR COOLING
Place the welder where clean cooling air can freely
circulate in through the rear louvers and out through
the case sides. Dirt, dust, or any foreign material that
can be drawn into the welder should be kept at a mini-
mum. Failure to observe these precautions can result
in excessive operating temperatures and nuisance
shutdowns.
LIFTING
Both handles should be used when lifting the FX450.
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
ONLY QUALIFIED PERSONNEL
SHOULD PERFORM THIS INSTALLA-
TION.
• TURN OFF INPUT POWER TO THE POWER
SOURCE AT THE DISCONNECT SWITCH OR
FUSE BOX BEFORE WORKING ON THIS
EQUIPMENT. TURN OFF THE INPUT POWER
TO ANY OTHER EQUIPMENT CONNECTED TO
THE WELDING SYSTEM AT THE DISCONNECT
SWITCH OR FUSE BOX BEFORE WORKING ON
THE EQUIPMENT.
• DO NOT TOUCH ELECTRICALLY HOT PARTS.
• ALWAYS CONNECT THE FX450 GROUNDING
LUG (LOCATED INSIDE THE RECONNECT
INPUT ACCESS DOOR) TO A PROPER SAFETY
(EARTH) GROUND.
----------------------------------------------------------------------
WARNING
FX450 (RED-D-ARC)
When using a crane or overhead device a lifting strap
should be connected to both handles. Do not attempt
to lift the FX450 with accessories attached to it.
STACKING
The FX450 cannot be stacked.
ENVIRONMENTAL LIMITATIONS
The FX450 is IP23 rated for use in an outdoor envi-
ronment. The FX450 should not be subjected to falling
water during use nor should any parts of it be sub-
merged in water. Doing so may cause improper oper-
ation as well as pose a safety hazard. The best prac-
tice is to keep the machine in a dry, sheltered area.
Do not mount the FX450 over combustible sur-
faces. Where there is a combustible surface
directly under stationary or fixed electrical equip-
ment, that surface shall be covered with a steel
plate at least .060” (1.6mm) thick, which shall
extend not less than 5.90” (150mm) beyond the
equipment on all sides.
-----------------------------------------------------------------------
INPUT AND GROUNDING CONNECTIONS
MACHINE GROUNDING
The frame of the welder must be grounded. A ground
terminal marked with the symbol shown is located
inside the reconnect/input connection area
for this purpose. See your local and national
electrical codes for proper grounding meth-
ods.
HIGH FREQUENCY PROTECTION
Locate the FX450 away from radio controlled machin-
ery. The normal operation of the FX450 may adverse-
ly affect the operation of RF controlled equipment,
which may result in bodily injury or damage to the
equipment.
CAUTION
AMPS
340
375
400
450
VOLTS
34VDC
35VDC
36VDC
38VDC
TEMPERATURES
55°C
DUTY CYCLE
100%
60%
40%
20%
HIGH TEMPERATURE OPERATION
WELDER OUTPUT RATINGS AT 55°C
ELEVATED TEMPERATURES