Preparation
Step 1: Use the Sensor+ Connect web interface to download and save the current
configuration out of the rack for later reference. Instructions on saving your
configuration from this interface can be found in any CEM+ Software Release
Note or any CEM+ Configuration Manual available for download from the ETC
website (www.etcconnect.com).
Step 2: Turn off main power to the rack(s). Before removing dimmer or control
modules for service, de-energise main feed to dimmer rack and follow
appropriate safety procedures for your region.
Step 3: Remove the eight dimmer modules above the CEM+ (if retrofitting an ESR+48 or
36 rack, remove the eight modules below the CEM+ as well). Note and document
the modules’ order/positioning in the rack for proper insertion and configuration
later.
Step 4: Use a digital voltmeter and VERIFY that power is off by checking voltages for
all combinations between the phase bars, neutral and earth.
Step 5: Remove the CEM+ from the rack