3
What is an ems75sz (sub-zero)?
The ems75sz is designed for sub-zero beer coolers. The ems75sz consists of power supply module
and a control display module connected by an interface cable. Example shown below.
3.1
Control Display Module (CDM)
The control display module is powered by a 12VDC supply from the power supply module. The con-
trol display module provides the following functionality.
Feature
Description
User interface
3-digit, 7-segment display that displays the product temperature and other information such
as defrost and alarm conditions. Enables end-users to cancel alarms and service technicians
to run test routines, view parameter settings, and so on.
Self-learning
Integrated motion sensor detects activity when someone moves in front of the cooler.
An optional door switch can detect cooler activity when someone opens the cooler doors.
Serving
temperature
Appliance sensor measures the air temperature of the refrigeration compartment.
Self-learning determines when the product should be at the ready mode temperature (the
optional serving temperature) or the saving mode temperature.
Refrigeration alarms
Refrigeration system alarms can alert to possible cooling problems and an optional condenser
sensor can alert to problems such as blocked condensers.
Boosted defrost
Timed-based or temperature-based defrost can be boosted by a defrost heater or a hot gas
defrost. An evaporator sensor is required for temperature-based defrost.
The control display module is available with either an integrated or a remote motion sensor. Addi-
tionally Elstat can supply and rectangular or curved CDM shape. All CDM variants are made from food
grade plastics.
The integrated motion sensor varient should always be installed where it can 'see' activity and it is
recommended that the CDM is installed externally on the cooler. An example of a CDM with integ-
rated motion sensor:
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27 February 2014