Maintenance; Electromagnetic Compatibility (Emc) - Lincoln Electric IDEALARC CV 420 Operator's Manual

If the machine is overheated, the thermal protection
circuit will decrease the output current to 0. The thermal
protection indicator [3] will turn on. The thermal
protection circuit will turn on the output current again,
when the machine is cooled.
The CV420 / CV505 is also electronically protected
against overload and accidental short-circuit. The
overload and short-circuit protection circuit automatically
reduces the output current to a safe value when it
detects an overload.

Maintenance

For any maintenance or repair operations it is
recommended to contact the nearest Technical Service
Center or Lincoln Electric.
performed by unauthorized service centers or personnel
will null and void the manufacturer's warranty.
The frequency of the maintenance operations may vary
in accordance with the working environment where the
machine is placed.
Any noticeable damage should be reported immediately.
Routine maintenance (everyday)
•
Check cables and connections integrity. Replace, if
necessary.
•
Remove the spatters from the welding gun nozzle.
Spatters could interfere with the shielding gas flow
to the arc.
•
Check the welding gun condition: replace it, if
necessary.
• Check condition and operation of the cooling fan.
Keep clean its airflow slots.
Periodic maintenance (every 200 working hours
but at list once every year)
Perform the routine maintenance and, in addition:
•
Keep the machine clean. Using a dry (and low
pressure) airflow, remove the dust from the external
case and from the cabinet inside.
•
Check and tighten all screws.
Mains supply network must be disconnected from the
machine before each maintenance and service. After
each repair, perform proper tests to ensure safety.

Electromagnetic Compatibility (EMC)

This machine has been designed in accordance with all relevant directives and standards. However, it may still generate
electromagnetic disturbances that can affect other systems like telecommunications (telephone, radio, and television) or
other safety systems. These disturbances can cause safety problems in the affected systems. Read and understand
this section to eliminate or reduce the amount of electromagnetic disturbance generated by this machine.
This machine has been designed to operate in an industrial area. To operate in a domestic area it is
necessary to observe particular precautions to eliminate possible electromagnetic disturbances. The
operator must install and operate this equipment as described in this manual. If any electromagnetic
disturbances are detected the operator must put in place corrective actions to eliminate these disturbances
with, if necessary, assistance from Lincoln Electric.
Before installing the machine, the operator must check the work area for any devices that may malfunction because of
electromagnetic disturbances. Consider the following.
•
Input and output cables, control cables, and telephone cables that are in or adjacent to the work area and the
WARNING
Maintenance or repairs
WARNING
A-4
11/04