Instruction Manual
Doc. #: 0260011-J0 Rev B
72
Refer to "Table J — Spare Parts" on page 69 for the part number of the fuse.
3i+1R shelf systems equipped with rectifiers, are protected with fuses that are sized to blow if there is
a wiring fault in the system. These fuses (one per 3i+1R shelf) are accessed from the back of the unit,
behind the back top panel (see photo in Figure 52). These fuses must be replaced by a qualified
service person.
1. Turn off the Inverter AC In put breakers.
2. Disconnect the battery feeds to the AMPS unit.
3. Remove the top back panel.
4. Remove the grey cover, shown in Figure 52. to access the fuses.
5. Replace the fuse with a fuse of the same rating and type (Alpha part #4600050):
WARNING!
Remove all input AC and DC power to the AMPS24 HP before starting this procedure: set
an external bypass switch to BYPASS mode or turn off the AC mains. Disconnect battery
feeds.
Figure 52 — Rectifier fuses (behind back top panel)
4 x rectier fuses
on this board
Grey cover
Turn off AC Mains
breaker to remove
power from here.
Turn off the Inverter
AC Input breakers
to remove power
from here.
Risk of Electric Shock and Fire Hazard: replace fuse with the same type and rating.
CAUTION!
7.8.1 Rectifier Fuse Replacement
7.8 Fuse Replacement