Instruction manual

ACU-1000 Operations Manual
Interoperability Now 2-11
Table 2-1 ACU-1000 Fuses
F1 10AF 250V, 3AG DC Bus Low voltage DC to each ACU-1000
module
F2 3AT 250V, 5x20mm AC Input AC Line fuse (115 VAC nominal)
1.6AT 250V, 5x20mm AC Input AC Line Fuse (230 VAC nominal)
F3 20AF 32V, 3AG DC Input DC Power Input Fuse (12 VDC nominal)
Figure 2-5 Side View of PSM-1A
This is a simplified side view of the PSM-1A. To replace Bus Voltage Fuse F1, first turn off
the Main Power pushbutton and remove main power cabling from the unit. Loosen the four
captive front panel screws and carefully slide the PSM-1A from the chassis. To completely
remove the PSM-1A, the attached cable assembly must be disconnected (though this is not
necessary to replace the fuse).
Fuse F1 is installed behind the heatsink panel as indicated above. Simply snap out the blown
fuse and snap in a new one. Reverse disassembly procedures to reinstall the PSM-1A.