Range
-30 to 5ºC (-22 to 41ºF)
Global default
-6ºC (21ºF)
ems75sz: -15ºC (5ºF)
9.15
Defrost termination temperature (dtd)
The table below details the defrost temperature duration (
dtd
) parameter.
Display
Description
Defines the temperature to end the defrost cycle.
Ending defrost cycles on temperature minimizes the duration of defrost
cycles.
The temperature is measured as follows:
l
OFC
and sub-zero coolers: the temperature is measured on the evaporator
sensor.
l
GDC
coolers: the temperature is measured on the appliance sensor.
Considerations
l
Must be set above the set point (
S P
) plus differential (
dI F
) temperature.
l
Must be set below
I Pd
.
l
If icing up occurs, review the values of the defrost parameters.
Range
1 to 30ºC (33 to 86ºF)
ems75sz: -5 to 22ºC (23 to 71ºF)
Global default
9.0ºC (48ºF) -
OFC
firmware
10.0°C (50°F) - Firmware excluding
OFC
and
S Z
15.0ºC (59ºF) -
S Z
firmware
9.16
Compressor rest time (rt)
The table below details the compressor rest time (
rt
) parameter.
Display
Description
Defines the minimum time between compressor cycles.
The compressor rest time ensures that the pressures in the refrigeration sys-
tem have time to equalize during compressor off-cycles.
The compressor rest time (
rt
) helps to avoid the following:
l
passing peak current through the windings of the compressor motor
l
switching off the system on the thermal overload protection
l
short cycling of the system.
Considerations
If set too low, the compressor rest time may cycle on the set point
(
S P
) and differential (
dI F
) temperatures or the saving set point
(
S S P
) and saving differential (
S d
) temperatures.
Range
1 to 30 minutes
Global default
3 minutes
71 of 86
27 February 2014
