User guide

2 CEM3 Sensor+ Touring Rack Retrofit Manual
Safety
Please note the following safety warnings before use:
• Disconnect power from the racks before all maintenance.
Overview of this Manual
Reference this manual throughout the retrofit procedure
• Preparation, page 5 - before you open the rack
• Remove the Old, page 6 - labeling and removing the existing equipment.
• Control Input Panel Replacement, page 6 - replacing the circuit board in the control
input panel
• Make Connections and Install the New Backplane, page 8 - transfer the wiring and
install new components
• CEM3 Power Harness Termination, page 10 - terminate the new power harness wires
• Replace AF Cards (AF Racks Only), page 11 - remove the existing Advanced Feature
cards and install the new ones
• Upgrading the Rack Door, page 11 - making alterations to or replacing the rack door
• Verify the Retrofit, page 13 - put the dimmers back in the rack and power up the rack
• Configure the CEM3, page 13 - put a configuration in the CEM3.
When viewing this document in electronic form (pdf file) with Adobe Acrobat Reader, blue
italicized text followed by a page number such as “Overview of this Manual, page 2” is a
link within the document. If you click on the link, it will jump to that section or topic.
WARNING:
Dimmer racks without an accessible power disconnect device cannot be
serviced safely. Before removing dimmer or control modules for service, de-
energize main feed to dimmer rack and follow appropriate Lockout/Tagout
procedures as described in NFPA Standard 70E. It is important to note that
electrical equipment such as dimmer racks can present an arc flash safety
hazard if improperly serviced. This is due to available large short circuit
currents on the feeders of the equipment. Any work on energized equipment
must comply with OSHA Electrical Safe Working Practices.