AKC 25H1
Function description
RC.1J.Z4.02
©
Danfoss
09/1999
23
The controller can be operated with system software type AKM and control panel type AKA 21.
Both operating modes may give access to several levels, depending on the user’s knowledge
of the various functions.
System software type AKM:
The different users are defined here with initials and passwords. Access is now granted to
exactly the functions the user is allowed to operate.
The operation is described in the AKM manual.
Control panel type AKA 21:
Access can be given to three user levels here:
1) Access without use of password.
See alarms. Display selected temperatures. Change temperature in the refrigeration
appliance. Start defrost.
2) Access via code 1
Setting of selected functions, acknowledgement of alarms.
3) Access via code 2
All settings in the menu system can be performed.
The operation is described in “Menu operation via AKA 21”.
If access code is set in pos. “0” (factory setting), there is free access to the system without the
use of a password.
AKC 25H1 Adr: --.
Chg. Code1
___
Chg. Code 2
___
Access codes
When the controller is set from control panel type AKA 21, it is possible to show auxiliary texts
in the display for a few functions.
This is done by pushing the key “Help” when the required function is shown in the display. A
brief text will now appear which describes the setting. For example:
Function is shown
Push "Help"
Auxiliary line 1 appears
Push "
↓
"
Auxiliary line 2 appears
etc.
Finish by pushing "
←
", and you will return to the function.
In the menu is shown which functions are provided with auxiliary texts.
Supporting text
Accidental damage, poor installation, or site conditions, can give rise to malfunctions of the
control system, and ultimately lead to a plant breakdown.
Every possible safeguard is incorporated into our products to prevent this. However, a wrong
installation, for example, could still present problems. Electronic control is no substitute for
normal, good engineering practice.
Danfoss wil not be responsible for any goods, or plant components, damaged as a result of
the above defects. It is the installer's responsibility to check the installation thoroughly, and to
fit the necessary safety devices.
Particular attention is drawn to the need for a “force closing” signal to controllers in the event of
compressor stoppage, and to the requirement for suction line accumulators.
Your local Danfoss agent will be pleased to assist with further advice, etc.
Installation considerations
