Lincoln Electric IM10132 FLEXTEC 650 - Manual (Page 9)

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
The FLEXTEC™ 650 has 2 lifting eyelets and 2 han-
dles that can be used to lift the machine. Both handles
or both eyelets should be used when lifting the FLEX-
TEC™ 650.
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 FLEXTEC™ 650
GROUNDING LUG (LOCATED INSIDE THE
RECONNECT INPUT ACCESS DOOR) TO A
PROPER SAFETY (EARTH) GROUND.
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WARNING
FLEXTEC™ 650
When using a crane or overhead device to lift using
the handles, a lifting strap should be connected to
both handles. Do not attempt to lift the FLEXTEC™
650 with accessories attached to it.
STACKING
Multiple FLEXTEC™ 650ʼs cannot be stacked.
ENVIRONMENTAL LIMITATIONS
The FLEXTEC™ 650 is IP23 rated for use in an out-
door environment. The FLEXTEC™ 650 should not be
subjected to falling water during use nor should any
parts of it be submerged in water. Doing so may
cause improper operation as well as pose a safety
hazard. The best practice is to keep the machine in a
dry, sheltered area.
Do not mount the FLEXTEC™ 650 over com-
bustible surfaces. Where there is a combustible
surface directly under stationary or fixed electrical
equipment, 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.
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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 FLEXTEC™ 650 away from radio con-
trolled machinery. The normal operation of the FLEX-
TEC™ 650 may adversely affect the operation of RF
controlled equipment, which may result in bodily injury
or damage to the equipment.
CAUTION
AMPS
600
650
750
VOLTS
44V
TEMPERATURES
55°C
DUTY CYCLE
100%
50%
30%
HIGH TEMPERATURE OPERATION
WELDER OUTPUT RATINGS AT 55°C
ELEVATED TEMPERATURES