Condenser High Temperature (Ht); Defrost Activation Temperature (Ddt) - Elstat ems75sz Manual

Display
Prevents excessive condensation on the evaporator in environments where
warm, and presumed humid, air is present by operating the evaporator fan.
If the fan set point (FS P) temperature is exceeded, the evaporator fan runs
Description
continuously even if the door is opened.
On reaching set point (S P) temperature, the evaporator fan switches off during
door openings.
Not related to fan cycle on (FC O) or fan cycle off (FC F).
Considerations
Not used on ems55advanced and ems55Radvanced OFC firmware
Range 01 to 30ºC (33 to 86ºF)
Global default 15ºC (59ºF)
9.13

Condenser high temperature (Ht)

The table below details the condenser high temperature (Ht) parameter.
Display
Defines the maximum temperature measured in the refrigeration system by
monitoring the condenser sensor.
Description
On reaching the condenser high temperature (Ht ), the EMS controller disables
the compressor and activates an alarm.
1. Is not used with CO2 (R744) coolers.
2. Requires a condenser sensor.
Considerations
3. To set the condenser high temperature
4. To disable, set below 50ºC or 122ºF.
Range 0.0 to 125ºC (32 to 257ºF)
Global default 0.0ºC (32ºF) - disabled.
9.14

Defrost activation temperature (ddt)

The table below details the defrost activation temperature (ddt) parameter.
Display
Defines the temperature measured on the evaporator sensor that activates
Description an off-cycle defrost.
The defrost activation temperature minimizes the risk of evaporator icing up.
Defrost method (dF) must be set to 1 to start defrost cycles on the defrost
activation temperature.
Considerations
Available only with the ems55 series using OFC (Open Front Cooler) firmware
and the ems75sz.
refrigeration system temperature when the condenser is 75% blocked.
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27 February 2014
(Ht
), measure the