Danfoss AK-CC 550 User Manual

AK-CC 550 Manual RS8EN502 © Danfoss 02-2010 5
Thermostat bands
Thermostatbandscanbeusedbeneciallyforapplianceswhere
dierentproducttypesarestoredwhichrequiredierenttem-
peratureconditions.Itispossibletochangebetweenthetwo
dierentthermostatbandsviaacontactsignalonadigitalinput.
Separate thermostat and alarm limits can be set for each thermo-
stat band – also for the product sensor.
Night setback of thermostat value
Inrefrigerationappliancestheremaybebigloaddierences
betweentheshop’sopeningandclosinghours,especiallyifnight
lids/blindsareused.Thethermostatreferencemayberaisedhere
withoutithavinganyeectontheproducttemperature.
Change-overbetweendayandnightoperationcantakeplace,as
follows:
•viaanexternalswitchsignal.
•viaasignalfromthedatacommunicationsystem.
Product sensor
AseparateoptionalproductsensorS6,whichmaybeplaced
in the appliance, can also be used and which can register and
monitor the temperature in the warmest part of the appliance.
There are separate alarm limits and time delays for the product
sensor.
Appliance cleaning
Thisfunctionmakesiteasyfortheshop’sstatocarryouta
cleaning of the appliance according to a standard procedure.
Appliancecleaningisactivatedviaasignal–asaruleviaakey
switch placed on the appliance.
Appliancecleaningiscarriedoutviathreephases:
1-attherstactivationtherefrigerationisstopped,butthefans
keeponoperatinginordertodefrosttheevaporators.”Fan”is
shown on the display.
2-atthesecondactivationthefansarealsostoppedandthe
appliancecannowbecleaned.”OFF”isshownonthedisplay.
3-Atthethirdactivationrefrigerationisrecommenced.The
displaywillshowtheactualappliancetemperature,(o97
setting).
Whenappliancecleaningisactivatedacleaningalarmistrans-
mitted to the normal alarm recipient. A later processing of these
alarms will document that the appliance has been cleaned as
often as planned.
Alarm monitoring
There are no temperature alarms during appliance cleaning.
- + + °C
1 ÷ + Fan
2 ÷ ÷ O
3 + + °C

Danfoss AK-CC 550 Specifications

General

Brand	Danfoss
Model	AK-CC 550
Category	Controller
Language	English