Danfoss A/S, (AC-DSL / MWA), 04 - 006
RD8AA50
→
DKRCI.PD.SC0.A1.0 / 50H009
7
Technical leaflet
Liquid level transmittter, type AKS 41 / 41U
Calibration of the
AKS 41 / 41U
(Continued)
Min. calibration when minimum refrigerant
level must be different from 4 mA:
1.
Bring the refrigerant liquid level to desired
minimum level.
.
Press the calibration pushbutton and keep it
activated in approx. 5 seconds, until green LED
stopps flashing.
3.
Activate, within the next 10 seconds, the
calibration pushbutton once and keep it
activated.
(If calibration pushbutton is not
activated within 10 seconds, it will
automatically leave calibration mode and
return to normal operation)
4.
Observe the output mA signal increasing fast
starting at 4 mA.
5.
Release the calibration pushbutton when the
output signal is approx. 0.5 mA from the
desired point.
6. All the next activations will increase the output
signal by approx. 0.05 mA
7. Approx. 10 seconds after the latest activation
the LED starts flashing
8. Output now corresponds to the value
measured at the latest activation.
Max. calibration when maximum refri-gerant
level must be different from 20 mA:
1.
Bring the refrigerant liquid level to desired
maximum level.
.
Press the calibration pushbutton and keep it
activated in approx. 5 seconds, until green LED
stopps flashing.
3.
Activate, within the next 10 seconds, the
calibration pushbutton twice and keep it
activated.
(If calibration pushbutton is not
activated within 10 seconds, it will
automatically leave calibration mode and
return to normal operation)
4.
Observe the output mA signal decreasing fast
starting at 20 mA.
5.
Release the calibration pushbutton when the
output signal is approx. 0.5 mA from the
desired point.
6. All the next activations will decrease the
output signal by approx. 0.05 mA
7. Approx. 10 seconds after the latest activation
the LED starts flashing
8. Output now corresponds to the value
measured at the latest activation.
Reset to factory setting
AKS 41 / 41U can always be reset to factory
setting regardless of any revised calibration
values.
1.
Press the calibration pushbutton and keep it
activated in min. 20 seconds, until green LED
starts flashing.
.
Release the calibration pushbutton.
3. When LED starts flashing, reset to factory
setting is completed.
AKS 41 / 41U is now operating according to the
factory settings.
When voltage is applied the LED will flash rapidly
as many times as it has been calibrated through
its lifetime.
Please note:
The current mA output is activated
as soon as the flashing sequence
has changed from rapid to slowly
flashing.
Normal operation:
At normal operation the Green LED will be
flashing slowly.
Generally the Green LED is ON every time
calibration pushbutton is activated.
Calibration mode
In calibration mode (
Press the calibration
pushbutton and keep it activated in approx. 5
seconds
) the Green LED is OFF.
Green LED indication
Change of refrigerant
In refrigeration mode setting (
Push the calibration
pushbutton and keep it pressed while 24 V a.c. is
connected and then release the pushbutton
) the
green LED is OFF until the pushbutton is released.
After this the green LED will flash according to
the type of refrigerant.
When the refrigerant has been selected, the
green LED is constantly ON.
