Rockwell Automation 1608M MegaDySC User Manual, 800 - 2400 A - Manual (Page 39)

Rockwell Automation Publication 1608M-UM002A-EN-P - September 2013 39
Maintenance Chapter 7
Automatic Bypass Switchboard Fuses
Refer to the fuse listing label located on the switchboard cover for fuse size and
type. Before replacing a switchboard fuse authorized service personnel will
require removal of power to the Automatic Bypass switchboard by opening and
locking-out the upstream circuit breaker.
MegaDySC and ER Cabinet Fuses
A large label inside the MegaDySC doors shows fuse locations. A similar label is
located within the optional ER storage cabinets. Fuse types are listed in
Table 7 .
Before replacing a MegaDySC cabinet fuse, factory authorized service personnel
must transfer the MegaDySC system to maintenance bypass mode. No attempt
should be made to service the MegaDySC if red LEDs located above the DC bus
capacitors are lighted.
WARNING: De-energize the Bypass switchboard before removing covers to
access fuses. Failure to comply with this warning can result in injury or death
WARNING: De-energize the MegaDySC electronics by placing the system into
Maintenance Bypass mode before opening the MegaDySC or ER cabinet doors
to replace any fuse.
WARNING: The MegaDySC has high voltage remaining up to 30 minutes after
disconnection from the AC line. Touching exposed or disconnected terminals,
cables or parts of the MegaDySC can lead to serious injuries or even death. Wait
for a minimum of 5 minutes before performing any service or testing on the
MegaDySC after power is removed. Keep doors closed until all internal LED
indicators are extinguished.
WARNING: Keep the cabinet doors closed to ensure proper cooling airflow and
to protect personnel from dangerous voltages inside the MegaDySC
IMPORTANT A qualified electrician must replace the fuses. Open the front cabinet door(s) to
access the fuse holders and fuses.
To maintain protection of the MegaDySC, be sure to replace the fuse with the
same type and rating. These fuses are available through Rockwell Automation
Technical Support.