ESAB Heliarc 281iAC/DC, Operating Manual

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section 3 installation
3. connection to the supply
The Heliarc AC/DC 281i requires a single phase 208-240V 60Hz electricity supply fused at 50A for all TIG welding
and Stick applications.
The 283i and 353i need a standard 3 phase 460V 60Hz electricity supply, note no neutral connection is required.
Supplies should be fused at 20A for the 283i and 32A for the 353i, using HRC type fuses.
If circuit breaker protection, rather than fuses, is to be used for any of the 3 machines, type D/4 breakers should
be used.
Ensure the green/yellow earth conductor is securely connected to a good mains earth.
4. Water cooler unit W.c.u. (0558101703)
If supplied install the W.C.U. in the base of the trolley by sliding it part way into the trolley base. Feed the W.C.U.
Warning
ensure poWer source is isolateD from the mains supplY.
primary cable through the hole/strain relief located on the rear of the W.C.U. compartment in the trolley. Slide
the W.C. unit completely into the housing. Locate the auxiliary W.C.U. receptacle on the upper left corner of the
rear panel. Plug the Water Cooler input plug into receptacle until it clicks. Secure with the W.C. unit with the
retaining bolt in the left side panel.
figure 1 - 230vac auxiliary connection
Green / Yellow
R S
230V