K&M FSD4000, Operating Manual

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EN
Juice Dispenser FSD4000 © K. & M. Holland GmbH © K. & M. Holland GmbH Juice Dispenser FSD4000
EN
Subject to technical change without prior notice! Version 2.0, 11/2017 Subject to technical change without prior notice! Version 2.0, 11/2017
7.21 Bag-Empty-Control and change
When rinsing the fruit juice dispenser (transition Standby => Normal), the reference value for
water is determined at the end of the rinsing process. This in addition to the „reference mini-
mum“ offset is used for the plausibility check of the juice reference value. The juice reference va -
lue is determined after a bag change and is also saved in a power-failure-proof manner.
Two mechanisms monitor the dispensing process to detect an empty bag:
1 If the „empty bag threshold juice x“ relative to the respective juice reference value falls
short for at least 300ms.
2
If the reference value jumps, i.e. concentrate is still sporadically flowing out of the bag,
causing the reference value to jump between water and juice. This jumping is detected
in a special filter and if a further threshold (0.25 * juice reference value) is exceeded for
300ms, it is also recorded as an empty bag event. If no valid juice reference value has yet
been recorded, a replacement value of 150 (15.0 in the PC tool) is calculated.
Example:
The juice value reference is 700. The parameter „Empty bag threshold juice 1“ is set to
85%, i.e. the threshold is 595. The filtered reference value does not go below the threshold
for long enough to detect an empty bag. Also, the filter for the reference value jumps
does not exceed the second threshold for long enough.
If a bag empty was detected, the dispensing process is aborted immediately and the juice line is
deactivated. The empty bag is signaled by double flashing of the corresponding juice line but -
ton for 30 seconds. Thereafter, the illumination of the button switches off.
After changing the bag, the operator must press the grey Service-Button to select the Bag-Me-
nu („bA9“). By pressing the corresponding juice line button for 3 seconds the change of the bag
is confirmed. The bag counter is incremented and the Bag-Empty-Control is deactivated for the
next 10 dispensing operations.
With the activation of the Bag-Empty-Control, the new reference value for the conductivity va-
lue of the juice is saved.