Definitions Of The Functions; Gas Function (If Provided); Sealing Function (Seal); Pump Function - Berkel BV 400/25 Manual De Uso Y Mantenimento

5.7 dEfINITIoNS of THE fuNCTIoNS

5.7.1 gaS fuNCTIoN (If ProvIdEd)

The gaS option makes it possible to pack delicate products without pressing due to pressure difference.
To compensate for this pressure difference, the air is replaced with a controlled gas mixture generally consisting
of 30% carbon dioxide and 60% nitrogen. It is also possible to use antioxidant gas mixtures which help prolong
the shelf-life. To select the suitable mixture, consult the information leaflet of the best gas production Companies.
The maximum permitted percentage of gas is 60%. This percentage represents the chamber volume occupied
by the gas. Beyond the 60% limit, the pressure exerted by the sealing bar on the bag may be insufficient and
bag sealing may be defective. If the cover opens during the cycle, reduce the gas flushing time.

5.7.2 SEalINg fuNCTIoN (SEal)

After vacuum creation and gas flushing (if envisaged), the machine proceeds with bag sealing by means of the
sealing bar provided with sealing wire.
The sealing time varies according to the bag basic weight, environmental temperature and the quantity of work
to be done. In any case, the seal seam on the bag must be uniform, clearly marked, without melted points.
Set a sealing time suitable for the bag, approximately between 2 and 4 seconds.
If it is found to be necessary to seal very thick bags, or bags made of special material (such as
aluminium), the models C46H and C62 are provided with a compressed air connection
increase the pressure exerted on the sealing bar. The pressure must be adjusted upline of the
air delivery pipe by means of the pressure regulator set at a maximum value of 1 bar. The use
of compressed air in sealing is quite rare, since the pressure exerted by the machine's system is suf-
ficient in almost all cases.

5.7.3 PuMP fuNCTIoN

The PuMP function allows you to pack, outside the packaging machine, embossed bags with a length greater
than the one permitted by the dimensions of the vacuum chamber.
The PuMP function can be enabled using the PuMP key. The function must be manually disabled upon reach-
ing the maximum vacuum that can be checked via the vacuum gauge. Moreover, pushing PuMP button for 3
seconds (models with three-phase pump), the "PuMP fuNCTIoN oN" is activated: all functions are performed
normally according to the saved program, but with the pump running continuously. It's useful if you want to
use the machine continuously for at least 30 minutes. To stop this function, press again the PuMP button for
3 seconds.

5.7.4 SToP fuNCTIoN

Pressing the SToP button will cause the machine
to interrupt the function in progress immediately
and proceed with the next one. It is particularly
suitable for avoiding liquids extraction or incorrect
positioning of bags. In case of an emergency, turn
off the machine using the main switch.
Instruction manual for vacuum chamber packaging machines Mod. BV 400/25 – BV 400/25H – BV 600/60 Instruction manual for vacuum chamber packaging machines Mod. BV 400/25 - BV 600/60
Rev. 01 - 04/2019 - Cod. 1500656 - Instruction manual for vacuum chamber packaging machines Mod. C46-C46H-C62
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