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PARSTAT 2273 Hardware User’s Manual
Fig. 3. Setting the Line Voltage and
Replacing the Fuses.
NOTE
The spindles on each side of the drum are octagonal, not round. This gives each
of the 4 settings a definite detent. To avoid eroding these detents, always remove
the drum before rotating it.
CAUTION Do not use makeshift fuses or short-circuit the fuse holders.
1.
Disconnect the instrument from the ac power source.
2.
Use a small flat-blade screwdriver or similar tool to
pop open the module
door.
3.
Remove the plastic drum — pinch the sides of the
drum with your fingernails and pull, or insert a flat-
blade screwdriver in the slot between the 120Vac and
240Vac settings and gently pry the drum loose, one
end at a time.
4.
Rotate the drum until the desired line voltage setting
shows in the door window, and firmly press the drum
back into the holder.
5.
Close the module door. You are now ready to reconnect the instrument to the ac power
source.
2.2.2 Replacing the Fuses
For 100 or 120 V ac line voltage, use a 6.3 A T (slow-blow) fuse (Littelfuse
®
type 213,
5 × 20 mm or equivalent).
For 220 or 240 V ac line voltage, use a 3.15 A T (slow-blow) fuse (Littelfuse type 213,
5 × 20 mm or equivalent).
To replace a fuse:
1.
Disconnect the instrument from the ac power source.
2.
Use a small flat-blade screwdriver or similar tool to pop open the module door.
3.
The line fuse is in a plastic fuseholder “drawer” marked with an arrow (
). Gently pull the
fuseholder out, remove the old fuse, and press in the replacement.
4.
Slide the fuseholder back into the module, and close the module door. You are now ready to
reconnect the instrument to the ac power source.
