B. 115/230 V conversion
B.1 Fuse
The fuse is a ceramic antisurge, 2.5A, 5x20mm, for example Littlefuse
021502.5MXP. The fuse holder is a red cartridge just above the IEC
power inlet and main switch on the rear of the unit (Fig. B.1).
Figure B.1: Fuse catridge, showing fuse placement for operation at 230 V.
B.2 120/240 V conversion
The controller can be powered from AC at 50 to 60 Hz, 110 to 120 V
(100 V in Japan), or 220 to 240 V. To convert between 115 V and
230 V, the fuse cartridge should be removed, and re-inserted such
that the correct voltage shows through the cover window.
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