ECKELMANN UA 400 - Start Delay after Fan; Emergency Operation; Defrosting; Types of Defrosting - an Overview

Firmware V3.15
21.04.2021
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5.4.10 Start delay after fan
Controller type: UR 141 TK (LT) only
With freezer coldrooms, cooling can be set to start with a definable delay after the fan has started. This function
is useful in large low temperature coldrooms to prevent temperature stratification (warm at the top cold at the
bottom) in the event of longer evaporator idle times.
In such an instance starting may be delayed while the evaporator fan circulates the cold-room air for a few
minutes. If temperature on the sensor then reaches the setpoint, the controller cancels demand for cooling and
the evaporator fan stops.
5.4.11 Emergency operation
Cooling can continue for a definable on time (0 to 100%) in the event of failure of temperature measurement or
the control temperature sensors (Menu 6-3). The emergency operation interval is 10 minutes, which means that
when a 10% on time is set cooling is ON for 1 minute and OFF for 9 minutes of the interval.
5.5 Defrosting
5.5.1 Types of defrosting – an overview
The following types of defrost are described in the following chapters:
ChapterDefrost in general
ChapterDruckgasabtauung (Heißgasabtauung)
ChapterBrine defrosting
ChapterMaster-Slave-Modus - Abtau-Synchronisation über CAN-Bus
ChapterMaster-Slave-Modus - Abtau-Synchronisation über Verdrahtung
ChapterFolgeabtauung (FA) über CAN-Bus
In emergency operation, cooling alternates for the first and second zones so as to avoid unnecessary
load due to simultaneous actuation of refrigeration points.
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Fire hazard!Ongroundsoffireprevention,duringtheplanningoftheinstallationadeviceforshutting
down the defrost heating in the event of excessive temperature (e.g. "KLIXON") must be provided.
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