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FLEXTEC
TM
650
SAFETY PRECAUTIONS
WARNING
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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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 circu-
late 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 minimum.
Failure to observe these precautions can result in exces-
sive operating temperatures and nuisance shutdowns.
This equipment is for industrial use only and it is not
intended for use in residential locations where the
electrical power is provided by the public low-voltage
supply system. There can be potential difficulties in
residential locations due to conducted as well as radi-
ated radio-frequency disturbances. The EMC or RF
classification of this equipment is Class A.
TILTING
Place the machine directly on a secure, level surface or
on a recommended undercarriage. The machine may
topple over if this procedure is not followed.
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
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™ 650's cannot be stacked.
TILTING
Place the machine directly on a secure, level surface
or on a recommended undercarriage. The machine
may topple over if this procedure is not followed.
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 connec-
tion area for this purpose. See your local and national
electrical codes for proper grounding methods.
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.
A-3
INSTALLATION
CAUTION
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