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P/N 3074287_H
CASE ELECTRONIC CONTROLLER
IMPORTANT!
Disconnect electrical power before beginning any
service on electrical or electronic equipment. DO
NOT work around live electrical circuits. Make
sure the machine is switched off before working
on electrical connections. All operations must be
carried out by qualified personnel.
Check that the supply voltage is correct before
connecting devices. Never use power that differs
from that indicated in the manual. Power supplies
other than thoses specified can seriously damage
the refrigeration system or other components and
parts.
Separate the cables of the analogue inputs from
those of the digital inpus and the serial line ca-
bles from the power cables (resistive as well as
inductive), in order to prevent malfunction due to
electromagnetic interference.
All system components should be obtained from
Hussmann to ensure system compatibility and
reliability. Make connections as short as possible,
and do not wind them around electrically connected
parts. When connecting loads, follow connection
diagrams carefully.
Never connect the secondary of the supply trans-
former to the earth.
The low voltage connections must have reinforced
insulation.
When using the digital inputs of the Corelink
Case Controller use another transformer in order
to prevent the digital inputs from malfunctioning
or being damaged.
To avoid causing static discharge, do not touch
the electronic components on the boards.
DO NOT use the same secondary of the con-
trollers power. Doing so can result in damage to
case controller.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
!
CAUTION
!
WARNING
NOTICE
DO NOT exceed the maxiumim current capac-
ity of the onboard controller relays. Always
verify the capacity of the output used.
IMPORTANT
DO NOT plug in accessory devices that are not
approved by Hussmann.
STOP
STOP
DO NOT exceed the maxiumim current capacity
of the onboard controller relays.
Always verify the capacity of the output used.
DANGER
!
DO NOT plug in accessory devices that are not
DANGER
approved by Hussmann.
!
GND is Common(-), not earth ground. Do not
earth ground this device.
NOTE
Permitted Use
→ Food Display Merchandisers
→ Coolers
→ Self-Contained
→ Remote Cases
Improper Use
→ HVAC
→ Unspecified Installation
→ Deviation from established Legislation and
Standards
Hussmann is not responsible for misuse of
device. Hussmann is not held responsible for de-
viation from this manual and its intended use. If
you have any questions, contact your Hussmann
representative for details.
In case of failure or faulty operation, send the
controller back to the distributor with a detailed
description of the fault.
The controller should not be used for purposes
different from those described in this manual. It
cannot be used as a safety device.
ATTENTION
INSTALLER
NOTE
Showcases with R-290 Refrigerant
2-3
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