Notions Regarding The Pump Oil And The Packaging Temperatures Of The Products; Notions On Vacuum Bags - Orved evox 25 Manual De Uso

BEFORE USING EVOX 25 / EVOX 25 H
5.4 NOTIONS ON PUMP OIL AND ThE PACKING TEMPERATURES
OF ThE PRODUCTS
WARNING. If the following simple and basic rules are complied with, the machine can be operated
with no problems occurring in terms of the result (optimal product preservation, which lasts as long
as possible) and in terms of pump duration and output. These rules are explained more precisely in the
paragraphs below. It is important for the pump oil (specific for food vacuum applications and FDA certified) to
always be kept in optimal conditions: fluid and clean, i.e. free from grit and watery parts.
In order to prevent any damage to the pump, the machine records the number of operated cycles and remind the user to
change the oil, through a visual and acoustic signal, that automatically activate at each switch once the maximum vacuum
cycles number has been exceeded.
The following suggestion must be followed:
1) The products to be vacuum packed must have been cooled to 3°C in a refrigerator or a blast chiller.
At this temperature:
• Bacterial growth is blocked and optimal preservation duration and output is achieved.
• The transfer of moisture in the form of water vapour, which is drawn by the pump and thereby causes oxidation of
the internal surfaces, is minimised.
2) Periodically check the oil level and perform an oil dehumidification cycle at least once a week.
3) The oil must be replaced according to the work load, however, at least every 6 months or every 100 operating
hours.
4) The oil must be replaced before start-up if the machine is not used for more than a month. In case an oil chan-
ge were not possible, it's necessary to run a dehumidification cycle. Oxidation and liquid residue, which settle at the
bottom of the pump oil tank when the machine is not used, are drained together with the spent oil.
5) The temperature of the room where the machine is installed must possibly not be lower than 10°C, in order to
prevent an excessive increase in oil density. The more the oil is fluid the easier the pump starts-up when cold.
WARNING . In order to prevent any damage to the pump, the machine records the number of operated
cycles and remind the user to change the oil, through a visual and acoustic signal, that automatically
activate at each switch once the maximum vacuum cycles number allowed has been exceeded.

5.5 NOTIONS ON VACUUM bAGS

The bags used for vacuum preservation and/or cooking foodstuffs are characterized by an external nylon layer (barrier
layer), which prevents the passage of oxygen from outside towards the inside of the bag, thus preserving the organoleptic
properties of the packed food.
The bags suitable for the use described in this manual are:
• STORAGE BAGS (in PA/PE): the external barrier layer is made of nylon (Polyamide/PA) and the sealing layer (internal) is
made of polyethylene (PE). They are smooth and opaque and normally have a thickness of 90 micron. They are suitable
for storing and coming into contact with food. Orved S.p.A guarantees their compliance with the applicable legislation.
They are not suitable for the vacuum cooking culinary technique.
• BAGS FOR COOKING (in OPA/PP): they differ from the storage bags due to the sealing layer, which is in polypropylene.
They are smooth and shiny and normally have a thickness of 75-85 micron. They are indicated for storage and above
all for Sous-vide cooking.
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Rev. 02 - 05/2016 - Cod. 1500015 - Instruction manual for vacuum chamber packaging machines EVOX 25 / EVOX 25 H