ESAB LKA 150 Service Manual page 5

4. Indicates that the unit is intended for connection to a 230 V single−phase 50 Hz supply.
I = primary currents at the various load points.
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5. IP21 indicates the enclosure class in respect of protection against penetrating objects and
water. Enclosure class IP21 indicates that the equipment is intended for indoor use,
while IP23 equipment is also suitable for outdoor use.
The symbol indicates that the machine is designed for use in areas of elevated electri-
cal risk.
6. The machine's serial number, in the form of three groups of figures (xxx yyy zzz).
The first group (xxx) indicates the version. The figures represent the year and week of
approval of the version.
The second group (yyy) shows the year and week of final testing of the machine.
The second group (yyy) shows the year and week of final testing of the machine. For
example, 341 indicates Week 41, 1993.
The final group (zzz) consists of three or four figures, and is a serial number in the range
0001 to 9999.
7. Shows that ESAB complies with the international standard, IEC 974−1.
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