Periodic Maintenance - Lincoln Electric OPTIMARC CV500 Service Manual

SVM7007 MAINTENANCE C‐2
SAFETY PRECAUTIONS
Read this entire section of the operating instructions
before operating the machine.
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
(located at the rear of the case) to a proper safety
(Earth) ground. OPTIMARC
system with earthed neutral.
WARNING
For any maintenance or repair operation, it is
recommended to contact the nearest technical service
centre or directly consult the machine division of the
Shanghai Lincoln Electric.
Maintenance or repairs performed by unauthorized
service centre or personnel will void the
manufacturer's warranty.
®
grounding lug
®
is for use on a 4 wire
OPTIMARC
PERIODIC MAINTENANCE
The daily maintenance frequency of the equipment
should be determined according to the actual working
environment. Any noticeable safety hazard should be
reported immediately.

Check to make sure the cable and related
connectors work well, otherwise replace them.

Clean interior of machine with a low pressure air
stream regularly.

Always keep the machine clean. Use a soft dry
cloth to wipe the machine's case, especially the
louver part of air in and out.
Do not open or connect any other substance into the
device. All maintenance work must be carried out when
the power supply of the equipment is cut off. Please
wear gloves according to safety rules. The operation
safety must be confirmed before each repair and
welding test.
THERMAL PROTECTION
Thermostats protect the machine from excessive
operating temperatures. Excessive temperatures may be
caused by a lack of cooling air or operating the machine
beyond the duty cycle and output rating. If excessive
operating temperature should occur, the thermostat will
prevent output voltage or current. The meter will remain
energized during this time. Thermostats are self‐resetting
once the machine cools sufficiently. If the thermostat
shutdown was caused by excessive output or duty cycle
and the fan is operating normally, the Power Switch may
be left on.
For the sake of safety, when the torch trigger is not
released, the machine will not output again even after
the thermostats are self‐reset.
®
CV/CC500
WARNING