ETC Sensor3, Руководство по модернизации

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The Retrofit 5
The Retrofit
Preparation
1: Use Sensor Configuration Editor and an SLTA (Serial LonTalk
®
Adaptor) if you want to download
and save the current Sensor configuration out of the enclosures for later reference. For
information on this process contact ETC Technical Services (see
Help from ETC Technical Services
on
page 2
).
2: Turn off main power to the enclosure(s).
3: Remove all of the dimmer modules above the CEM (if retrofitting an SR or HSR 48 enclosure,
remove the eight modules below the CEM as well). Note and document the modules’ order/
positioning in the enclosure for proper insertion and configuration later.
4: Use a digital voltmeter to verify that power is “Off” by checking voltages for all combinations
between the phase bars, neutral and ground.
5: Remove the CEM from the enclosure.
WARNING:
RISK OF ELECTRIC SHOCK! Enclosures without an accessible power disconnect
device cannot be serviced safely. Before removing dimmer or control modules
for service, de-energize main feed to enclosure and follow appropriate
Lockout/Tagout procedures as described in NFPA Standard 70E. It is
important to note that electrical equipment such as enclosures 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.