ETC Unison DRd Dimming Engine Replacement - Manual

E T C
®
S e t u p G u i d e
Unison
®
DRd Dimming Engine Replacement
DRd Dimming Engine Setup Guide Page 1 of 3 Electronic Theatre Controls, Inc.
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
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
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Service: (Americas) [email protected]

(UK) [email protected]

(DE) [email protected]

(Asia) [email protected]
Web: www.etcconnect.com  Copyright © 2012 ETC. All Rights Reserved.  Product information and specifications subject to change.
7183M2280  Rev B  Released 2012-02  ETC intends this document to be provided in its entirety.
Overview
This guide outlines the procedure for removing and replacing the Unison
®
DRd dimming engine. For
more information on installing the Unison DRd, please refer to the Unison DRd Rack Enclosure
Installation Manual that shipped with your rack or you may download it from our website at
www.etcconnect.com .
Remove the DRd Dimming Engine
Step 3
Step 6a
Step 6b
Step 6c
The rack door has been
removed from this graphic
for clarity of this procedure.
Step 1: Turn off power to the enclosure and follow appropriate safety procedures.
Step 2: Remove the top dimmer module from the enclosure.
Step 3: Loosen the two captured screws that secure the dimming engine panel.
Step 4: Gently pull the panel straight down until the top of the dimming engine panel is clear of the
enclosure.
Step 5: Tilt the dimming engine away from the rack enclosure.
Step 6: Disconnect the three cables that are attached to the unit:
a: For the cable bundle on the left side, squeeze the tabs on either side of the connector and
gently pull the cable until it is free from the unit.
b: For the ribbon cable connected on the right rear side, release the tabs on either side of the
connector by sliding them opposite the connector then gently pull the cable free.
c: For the 2-wire harness cable on the right side, gently pull the connector straight out.
Step 7: Remove the dimming engine:
a: Align the panel perpendicular to the rack.
b: Slide the panel up approximately one inch to align the guide pins with the top of the guide
slots.
c: Pull the panel straight out.
W A R N I N G : Before removing the Dimming Engine, de-energize main feed to the 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.
C A U T I O N : Before installing the new dimming engine, verify the voltage of the installed unit
matches the voltage of the replacement (labeled on the front panels). If the two are
different, do not install the replacement. Installing an incorrect voltage dimming
engine can result in equipment failure. Contact your authorized dealer or ETC
Technical Services for further assistance.