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Manual RS8EF402 © Danfoss 02-2009
AK-SM 350 Version 1.7x
Starting defrosts
This is where you select a group of controllers which are to have a
defrost signal.
There are two ways in which the controllers can be grouped:
1. Individually. Once the defrost has started, each controller will
carry out the defrost and then restart refrigeration as soon as
possible afterwards.
2. Coordinated. In this case, refrigeration will not resume until the
whole group has finished defrosting.
It is possible to create 10 defrost groups, with each group contain-
ing a max. of 30 controllers.
The way to access the groups is shown on the previous page.
Group 1
Defrost function
By using the setting “Started” the function is active. The schedule
determines when the signal is to be sent to the individual control-
lers.
Starting a defrost manually
By pressing “Enter” you start a defrost in all the controllers in the
group.
Coordination
Select "Yes" if the whole group can only start cooling once the last
controller has completed a defrost cycle.
(The group of controllers must support the function.)
Defrost schedule
(You will find the setting "one arrow to the right" of the group.)
Up to 8 defrosts per day can be started.
A defrost time point is defined by setting a time. The time point
00.00 will not start a defrost.
Controllers group
This is where you define which controllers are to be in the group.
(You will find the setting "one arrow to the right" of the schedule.)
(There can be up to 30 controllers in a group.)
Controller address
State the address of the controller that is to be part of the group.
Once the address has been set, you will automatically be able to
enter one more.
Group 2.
If there is a second or third group, or more, settings must also be
entered for these.