Daihen varstroj VARMIG 231-i LCD, Owner'S Manual, Page: 59 / 100

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10. MAINTENANCE
1. Disconnect input plug or power before maintenance or repair
on machine.
2. Be sure input ground wire is properly connect to a ground
terminal.
3. Check whether the inner gas-electricity connection is well
(esp. the plugs), and tighten the loose connection; if there is
oxidization, remove it with sand paper and then re-connect
4. Keep hands, hair, loose clothing, and tools away from
electrical parts such as fans, wires when the machine is
switched on.
5. Clear the dust at regular intervals with clean and dry
compressed air; if the working condition is with heavy
smoke and air pollution, the welding machine should be
cleaned daily.
6. The compressed air should be reduced to the required
pressure lest the little parts in the welding machine be
damaged.
7. To avoid water and rain, if there is, dry it in time, and
check the insulation with mega-meter (including that
between the connection and that between the case and
the connection). Only when there is no abnormal
phenomenon should the welding continue.
8. If the machine is not used for a long time, put it into the
original packing in dry condition.