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SVM7007 INSTALLATION A‐3
SAFETY PRECAUTIONS
Read the entire installation section before starting
installation.
WARNING
ELECTRIC SHOCK can kill.
Only qualified personnel should
perform this installation.
Turn the input power OFF at the main
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 main
switch or fuse box before working on the equipment.
Do not touch electrically "Hot" parts.
Always connect the OPTIMARC® grounding lug (located
at the rear of the case) to a proper safety (Earth) ground.
OPTIMARC® is for use on a 4 wire system with earthed
neutral.
SELECT SUITABLE LOCATION
This power source should not be subjected to falling water,
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.
CAUTION
The bottom of machine must always be placed on a firm,
secure, level surface. There is a danger of the machine
toppling over if this precaution is not taken.
Place the welder where clean cooling air can freely circulate
in through the back louvers and out through the case or front
sides. Water, dirt dust or any foreign material that can be
drawn into the welder should be kept to a minimum. Failure
to observe these precautions can result in excessive operating
temperatures and nuisance shutdowns.
Locate the machine away from radio‐controlled machinery.
Normal operation of the welder may adversely affect the
operation of RF controlled equipment, which may result in
bodily injury or damage to the equipment.
STACKING
The machine cannot be stacked. Be sure to locate the
machines on a firm level surface.
LIFTING
The machine can be moved using the handles.
INPUT AND GROUNDING CONNECTIONS
WARNING
Only a qualified electrician should connect the input
®
leads to the OPTIMARC
. Connections should be made
in accordance with the connection diagram. Failure to
do so may result in bodily injury or death.
Open the input box on the rear of the case. Use a three‐
phase supply line, the three live wires should go
through the three holes of the input wire holder and be
securely clamped and fixed. Connect L1, L2, L3 and
ground according to the Input Supply Connection
Diagram decal, refer to Figure A.1.
Make sure the amount of power available from the
input connection is adequate for normal operation of
the machine. Refer to the Technical Specifications at
the beginning of this Installation section for
recommended
fuse and wire sizes. Fuse the input circuit with the
recommended super lug fuse or delay type breakers.
Using fuses or circuit breakers smaller than
recommended may result in "nuisance" shut‐offs from
welder inrush currents, even if the machine is not being
used at high currents.
OUTPUT CONNECTION
Connect electrode and work leads with sufficient size
between the proper output studs on the power source
and the electrode or the work. Be sure the connection
to the work makes tight metal to metal electrical
contact. Poor work lead connections can result in poor
welding performance.
To avoid interference problems with other equipment
and to achieve the best possible operation, route all
cables directly to the electrode and the work. Avoid
excessive lengths and do not coil excess cable.
Minimum work and electrode cable sizes are as follows:
(60% Duty Cycle)
Note: The recommended cable size may need to
change depending on its quality. When the rated
current flow goes through, the total voltage drop on the
ground cable and electrode cable must not exceed 4
volts.
®
OPTIMARC
CV/CC500
FIGURE A.1
TABLE A.1
Current
Minimum Copper Work
Up To 30m Length
200A
300A
400A
500A
Cable Size
2
30 mm
2
50 mm
2
70 mm
2
95 mm
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