Rockwell Automation 2364,2364E NRU Diode Bridge Assembly Replacement (180 - 350A DC) - Manual (Page 2)

2 NRU™ Diode Bridge Assembly Replacement (180 - 350A DC)
Publication 2364E-5.10 - April 1998
Safety Precautions The following general precautions apply to NRUs and their
respective drive systems:
Special Instructions The following special instructions apply to NRUs and their respective
drive systems:
Important: As you remove parts, place them in order on a clean
surface because you will need to reuse some of them
during reassembly.
Important: Some washers, such as the diode clamp washers and the
Belleville washers used on busbar bolts have only one
correct orientation.
!
ATTENTION: Only those familiar with the drive
system, the products used in the system, and the
associated machinery should plan or implement the
installation, startup, and future maintenance of the
system. Failure to comply can result in personal injury
and/or equipment damage.
ATTENTION: Verify that all sources of AC and DC
power are deenergized and locked out or tagged out in
accordance with the requirements of ANSI/NFPA 70E,
Part II.
ATTENTION: The system may contain stored energy
devices. To avoid the hazard of electrical shock, verify
that all voltage on capacitors has been discharged before
attempting to service, repair, or remove a drive system
or its components. You should only attempt the
procedures in this manual if you are qualified to do so
and are familiar with solid-state control equipment and
the safety procedures in publication NFPA 70E.
ATTENTION: When servicing any unit, do not drop
any nuts, bolts, washers, etc. inside the unit as they may
cause a short circuit on power up. Dropped items must
be found and removed before you apply power.
ATTENTION: This drive system contains ESD
(Electrostatic Discharge) sensitive parts and assemblies.
Static control precautions are required when installing,
testing, or repairing this assembly. Component damage
can result if ESD control procedures are not followed.
If you are not familiar with static control procedures,
refer to Rockwell Automation publication 8000-4.5.2,
Guarding Against Electrostatic Damage or any other
applicable ESD protection handbook.