USER MANUAL
JEFARC140M-230
140A
DC INVERTER ARC WELDER • 230V
~
50Hz • 13A
www.jeffersontools.com
10
ELECTRODE SELECTION
The type of electrode required for the welding process will be based on the thickness of the workpiece, the welding position, the joint form and the
welding layer. The level of current required to weld the electrode is outlined below:
Electrode
Ø1.6mm
Ø2.5mm
Ø3.2
Ø4.0
Current
25~40A
50~80A
100~130A
160~200A
The relationship between the welding current (I), factor (K) and electrode diameter (d) is shown
below and be illustrated as (I=K X d: Carbon Electrode).
Electrode
Ø1.6mm
Ø2.0mm - 2.5mm
Ø3.2mm
Factor / K
20~25
25~30
30~40
WORKING ENVIRONMENT
1.
Welding should be done in relatively dry environments, with air humidity less than 90%.
2.
Avoid welding in strong sunshine or damp conditions, welder and all working materials should remain dry at all times.
3.
Avoid welding operation in dusty environments and corrosive air environment.
4.
Avoid welding in windy and drafty areas.
WELDER
1.
Ensure that the air inlet is kept clear to allow the fan and cooling system to perform as required.
2.
Prevent overloading - keep the welding current less than the maximum overload current. Overloading the current will reduce the performance
and lifespan of this equipment and is potentially dangerous.
3.
Ensure that the voltage is kept to recommended levels as indicated on the specification plate.
4.
Ensure that the welder is earthed using a minimum of 6mm square cable before operation.
5.
Ensure that the equipment operates within the recommended duty cycle. Failure to operate within the specified duty cycle will result in thermal
cut-out or damage to PCBs.
MAINTENANCE
WARNING:
Ensure that the power supply is disconnected before opening the casing and ensure that all maintenance and repairs are
carried out by qualified technicians.
1.
Remove any dust and particle debris from the welder, air inlet and fan regularly. Keep all welding equipment clean and dry.
2.
Use a mild air flow to remove dust and particles avoid using water or steam on any part of the equipment.
3.
Check the insulation regularly using an ohmmeter.
4.
Store all welding equipment in a safe, mild and dry environment when not in use.
Important:
During warranty period all repairs and maintenance must be carried out by an authrorized Jefferson engineer.
Any unauthorized maintenance and repairs will invalidate the warranty.
Contact Jefferson Tools for any enquiries.
When not in use place the fan in its original box or otherwise cover to protect from dust, and store in a safe, dry, environment and safe from
children and animals.
Summary of Contents for JEFARC140M-230
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