Danfoss AK-CC 550 Manual page 18

Drip-off time
Here you set the time that is to elapse from a defrost and until the compressor is to
start again. (The time when water drips off the evaporator).
Delay of fan start after defrost
Here you set the time that is to elapse from compressor start after a defrost and until
the fan may start again. (The time when water is "tied" to the evaporator).
Fan start temperature
The fan may also be started a little earlier than mentioned under "Delay of fan start
after defrost", if the defrost sensor S5 registers a lower value than the one set here.
Fan cut in during defrost
Here you can set whether fan is to operate during defrost.
0: Stopped (Runs during pump down)
1: Running (stopped during "fan delay")
2: Running during pump down and defrost. After that stopped
Defrost sensor
Here you define the defrost sensor.
0: None, defrost is based on time
1: S5
2: S4
3: Sx. For application 1 to 8 and 10 defrosting is stopped when both S5 and S6 have
reached the set temperature. For application 9 defrosting is stopped individu-
ally on the two sections of S5 / S5B
Pumpdown delay
Set the time where the evaporator is emptied of refrigerant prior to the defrost.
Drain delay (only in connection with hotgas)
Set the time where the evaporator is emptied of condensed refrigerant after the
defrost.
Defrost on demand – aggregate refrigeration time
Set here is the refrigeration time allowed without defrosts. If the time is passed, a
defrost will be started.
With setting = 0 the function is cut out.
Delay on stop of heating in the drip tray
The time applies from the time the defrost stops by time or temperature to the time
the heating element in the drip tray needs to be disconnected.
Adaptive defrosting
An adaptive defrosting is an extra defrost in addition to the scheduled defrosts. Here
the adaptive defrost is set for when it can start a defrost if the need arises:
0: Never
1: Only alarm on ice over
2: It may only start during day operation
3: It may start both during day and night operation
4: It can only start during night operations
Restart of adaptive defrosting
The function starts a defrost and when it is complete, the tuning function restarts so
that the evaporator's data can be registered.
MUST ONLY BE ACTIVATED DURING STANDARD OPERATION.
If you wish to see the temperature at the defrost sensor, push the controller's lower-
most button. (May be changed to another function in o92.)
If you wish to start an extra defrost, push the controller's lowermost button for four
seconds.
You can stop an ongoing defrost in the same way
Parameter for cooling function
Integration time
Expert setting for injection function
The value should only be changed by specially trained staff.
Max. value for the superheat reference
Min. value for the superheat reference
MOP temperature
If no MOP function is required, select pos. OFF
Temperatureglide (only when using of S1-temperature sensor)
If a zeotrope refrigerant is used, a value for temperature glide must be set.
18 Manual RS8EN502 © Danfoss 02-2010
d06 DripOff time
d07 FanStartDel
d08 FanStartTemp
d09 FanDuringDef
d10 DefStopSens.
d16 Pump dwn del.
d17 Drain del
d18 MaxTherRunT
d20 Drip Tray del
d21 AD mode
d22 AD reset
Defrost temp.
Def Start
Here you can start a manual defrost
Hold After Def
Shows ON when the controller is
operating with coordinated defrost.
Disable def.
Defrost in progress can be stopped
Defrost State
Status on defrost
1= pump down / defrost
n05 Tn sec
n09 Max SH
n10 Min SH
n11 MOP temp
(A value of 15 corresponds to OFF)
n12 Glide
AK-CC 550