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Make sure the input current is 220 THREE PHASE +/-10%.
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Before the operation, all personnel not involved in the process must leave. Do not look directly at the
arc without proper eye protection.
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Proper ventilation of the machine improves the performance of the equipment.
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Turn o the engine of the machine when you nish the operation to save energy.
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When the switch (switch) (switch) is turned o to protect the equipment due to failure, do not restart
the equipment until the problem is resolved as additional problems may occur.
5 Maintenance and Troubleshooting
5.1 Maintenance
To guarantee the correct operation of the machine with adequate e ciency and safety, regular
maintenance must be carried out on it. Let customers understand maintenance methods, let customers
do simple analysis, and use the machine properly to reduce machine failure and repair time. To extend
the useful life of the machine, the maintenance details are found in the following table;
Caution: For safety before starting maintenance turn o the electrical power and wait ve minutes for
the voltage to drop to a safe level of 36 volts.
Date
Observe that whether panel knob and switch in the front and at the back of arc welding
machine are exible and put correctly in place. If the knob has not been put correctly in
place, please correct; If you can't correct or x the knob , please replace immediately;
If the switch is not exible or it can't be put correctly in place, please replace immediately;
Please get in touch with maintenance service department if there are no accessories.
After turn-on power, watch/listen to that whether the arc welding machine has shaking,
Daily examination
whistle calling or peculiar smell. If there is one of the above problems, nd out the reason to
get rid of; if you can't nd out the reason, Please contact local this area agent or the branch
company.
Observe that whether the display value of LED is intact. If the display number is not intact,
please replace the damaged LED. If it still doesn't work, please maintain or replace the
display PCB.
Observe that whether the min/max value on LED accords with the set value. If there is any
di erence and it has a ected the normal welding craft, please adjust it.
Maintenance items
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