technical bulletin
Document Part # 026-4600 Rev 3 23-APR-2008 Page 1 of 8
©2007 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
Visit our website at http://www.emersonretailsolutions.com/ for the latest technical documentation and updates.
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Control Link RSC Installation Instructions
Overview
The Control Link Refrigeration System Controller (CL-RSC) is an electronic device that can control all functions
of a single-compressor refrigeration system, including refrigeration, defrost, and alarming. Scheduled defrost and
case light control is also possible with the addition of an expansion real-time clock module (P/N 618-2082, avail-
able separately).
The CL-RSC reads discharge air and defrost termination temperature from sensors mounted in the case. The CL-
RSC may control two external relays (compressor plus one configurable relay) directly from its two onboard dry-
contact relay outputs, or it may use a pluggable expansion output board (P/N 618-1120 for compressor control, or
618-2085 for refrigeration solenoid control) for activating case system components.
NOTE: For information about networking Control Link RSC with E2, refer to Technical Bulletin 026-4602
available on the Internet at http://www.emersonretailsolutions.com/library
.
Mounting
Main Module / Relay Expansion Board
The Control Link main module and relay expansion boards are designed for mounting on a refrigerated case or in
an enclosure near the case. The output board connects to the main module with a ribbon cable and therefore should
be mounted directly below the main module using the attached stand-off bracket. Figure 1 shows module dimen-
sions, and Figure 2 shows relay expansion board dimensions.
Figure 1 - Control Link Module Mounting
Figure 2 - Expansion Board Mounting
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