Vacuum Packaging Machine VC999 K7
Operation
2008-11-26 Art.-No. 592.016 Page 57/121
Explanation of parameters
Vacuum set point
The vacuum set point is displayed in ‰. 999‰ is the maximum vacuum. Vac-
uuming is carried out until the vacuum set point is reached in the vacuum
chamber.
Vacuum stage
Step-by-step vacuuming starts at 500‰ and is continued in selectable vac-
uum stages (with defined vacuum holding time) up to the pre-specified set
vacuum value.
Vacuum holding time
During stage vacuuming, the vacuum holding time is the temporary holding of
the current vacuum value between the individual vacuum stages.
Evaporation
sensitivity
0.1 s
Maximum evaporation sensitivity, i.e. the vacuum process ends
when the evaporation point is reached.
10.0 s
Minimum evaporation sensitivity, i.e. the vacuum process is ex-
tended by a max. of 10 sec when the evaporation point is reached.
This improves the vacuum but extends the packaging cycle.
Pre-ventilation
pressure
Pre-ventilation prevents sudden clinging of the bag to the product. This can
prevent unwanted creases occurring in the bag.
A residual vacuum limit value can be set for pre-ventilation. A value of 999‰
cuts off pre-ventilation.
Pre-ventilation extends the packaging cycle!
Intermed. ventilation
time
This is the same function as "Intermed. ventilation value" except that the time
is defined here instead of the vacuum value. This is necessary when produc-
tion is carried out with the vacuuming mode "Time" (emergency operation).
Please refer to the explanation of the parameter "Intermed. ventilation value".
Intermed. ventilation
value
The intermediate ventilation value can only be programmed if the function
"Intermed. ventilation" is switched on in Mask 156: Service parameter.
Suitable for moist products which tend to foam under vacuum. Intermediate
ventilation is a brief blast of air which prevents foaming of wet and moist prod-
ucts.
During the intermediate ventilation process the vacuum chamber is ventilated
for a short period after the sealing bar has been lowered. With intermediate
ventilation, the bag clings to the product, thus preventing foaming.
Intermediate ventilation only makes sense when working with high vacuum set
values or with vacuuming mode "Evaporation"!
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