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Appendix A: Changing the MPL 1640 Voltage
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Note that the fuse sled carries two fuses—one for 115 volt operation (actually 105 - 120 volts) and another for 230 volt
operation (actually 220 - 240 volts). The position of the two fuses in the sled as well as the fuse ratings must be
maintained for adequate protection. Fuse ratings for the MPL 1640 are: 1 amp for 115 VAC and .5 amp for 230 VAC.
Following are step-by-step instructions for changing the mains voltage of the MPL 1640.
WARNING: Before carrying out this operation, remove the power cord!
110
110
220
110
220
110
220
1: Insert a small screwdriv-
er into the hook beneath the
fuse sled and pull it out from
its retaining clip. Hold the
hook with your fingers and
gently pull the sled out.
3: Use a small pair of
needlenose pliers to
gently pull out the
mains jumper.
2: Remove fuse sled.
4: Use the needlenose pliers to turn the
mains jumper upside down so that the
other voltage value is right side up, then
reinsert the mains jumper. Reinsert the
fuse sled by gently pushing it back in
until you hear a click and snap the hook
back beneath its retaining clip.