Valko CVE Series Parts list manual

Outside vacuum packaging machines
“CVE” series
Mod. CVE-300 SECCO
Mod. CVE-420 SECCO
Mod. CVE-420 OLIO
INSTRUCTIONS FOR INSTALLATION,
USE AND MAINTENANCE

rev. 3 – 26/05/2008 2/10

rev. 3 – 26/05/2008 3/10
This installation and use instruction book refers to the outside vacuum packaging machines CVE series.
These machines are being used only for the vacuum packaging in embossed bags and, in case the machine
has been foreseen with special device, in special containers, which avoid any possible contact with oxygen,
chemical and biological contaminants present in the environment.
These result are achieved thanks to the possibility of obtaining the desired vacuum degree by the almost
complete air extraction from inside the recipient or bag.
In this way the product maintains its characteristics of colour, taste, flavour, etc., for a longer time.
The rating plate contains all necessary data for the installation : type, consumption, voltage, etc.
INSTRUCTION FOR INSTALLATION
 DRAWING OF THE EQUIPMENT
 TECHNICAL DATA
Model Width Depth Height Sealing bar Voltage Power
Vacuum
pump
CVE-300 SECCO 350 mm 290 mm 110 mm 300 mm 230V~ 200 W 0,6 m3/h
dry
CVE-420 SECCO 470 mm 290 mm 155 mm 420 mm 230V~ 80 W 0,9 m3/h
dry
CVE-420 OLIO 470 mm 290 mm 155 mm 420 mm 230V~ 200 W 4 m3/h oil
Fig. 1

rev. 3 – 26/05/2008 4/10
 INSTALLATION
Installation, assembly and troubleshooting must only be performed by skilled personnel strictly in accordance
with the following instructions :
- Remove the machine from the packing and throw away the protection pieces.
- Remove the protection film from the equipment and the strap from the cover.
- Set the machine perfectly straight by adjusting the supporting feet until the correct position
has been reached. A wrong alignment of the machine could affect the performance during
running.
- For the installation of the machine an omnipolar switch must be mounted between the power
network and the equipment and it must have a minimum contact distance of at least 3mm
per pole. Allow easy access to the switch.
- The rating plate is on the rear of the machine. From the plate can be checked if the
equipment is set to run with the available line voltage. Check that the available power
voltage matches the one printed on the rating plate.
- During running of the machine the voltage must be within +/- 10% of the correct rating.
- Earthing the equipment is mandatory in order to avoid damaging the electronic board.
- It is strictly mandatory to comply with the fire regulations!
 DIRECTIONS
Set the machine perfectly straight by adjusting the supporting feet until the correct position has been
reached. A wrong alignment of the machine could affect the performance during running.
ATTENTION : To avoid spilling oil from the pump which could damage the equipment never turn the machine
upside down or incline it. (only for the CVE 420-OLIO model).
THE EQUIPMENT MUST BE PLACED IN A WORKING ENVIRONMENT WITH AN AMBIENT
TEMPERATURE NOT LESS THAN 12°C.
Please note : do not set a higher sealing time than needed, otherwise the sealing bar and relative
teflon will burn.
For model CVE 300-SECCO only use embossed bags and no folding bags.
 LEGAL REGULATIONS, TECHNICAL RULES AND DIRECTIVES
During the installation the following rules and regulations must to be observed :
- Legal regulations in force (to be defined Country by Country)
- Accident protection requirements and laws in force (to be defined Country by
Country).
 ELECTRICAL CONNECTION
See enclosed wiring diagrams.
Check the power supply and voltage with the rating on the plate. The machine is supplied with cable and
plug.

rev. 3 – 26/05/2008 5/10
 REPLACING OF THE CONNECTING CABLE
In case of cable replacement check the electrical scheme.
The replaced cable must not be less than type H05 RN-F in quality and shall have a minimum wire section
of 3x1,5 mm2.
During connection carefully make sure that the earth wire is longer than the others. In case of an unexpected
strong pull on the cable or in case the cable clamp breaks the earth wire must be the last to disconnect from
power.
The machine can only be started after having checked that all these safety precautions have been carefully
observed.
 OPERATOR INFORMATION
Train the operator on the equipment with the help of the instruction book. Always hand over the instruction
book to the operator.
Suggest the operator contracts for the maintenance service.
USE AND MAINTENANCE
The vacuum packaging machine VS35 is for general use and therefore must be operated only by qualified
staff.
All installation and connection work must be performed only by qualified staff and in accordance with this
instruction book.
During use the machine must be attended.
Never clean and wash the machine by means of direct pressure water jet.
The machine runs completely automatic (with the VAS system, system with microprocessor allowing the
machine to carry out the max. vacuum reachable by the relative pump).
Fig. 2 shows the bag positioning in the machine :
Fig. 2
Bag Bag holder

rev. 3 – 26/05/2008 6/10
 INSTRUCTIONS for vacuum packaging in bags
Plug into the socket paying attention not do damage the cable by squashing under the equipment
- Push the main switch 0/1 (A).
- Set the sealing time (about 3 seconds for embossed bags with a thickness of 90
micron) by turning the potentiometer B.
- Position the bag, with relative product to be vacuum packed, as per fig. 2.
- Lower the machine lid and keep it pushed down for a few seconds until the bag
completely wraps the product : the machine will automatically carry out the vacuum
packaging and relative sealing of the bag (during the vacuum pahse of 24 seconds,
the warning light VACUUM lightens).
- The lid automatically lifts up at the end of cycle.
- In case you want to interrupt the cycle without sealing, it is necessary to push the
main switch 0/1 (A).
- In case you want to vacuum pack the product with a lower vacuum degree and seal
the bag, it is necessary to push the button STOP (C) and wait for a few seconds until
the cover lifts up.
Fig. 3
O
N
OF
F
STO
P
Vacuum A
C
B

rev. 3 – 26/05/2008 7/10
 INSTRUCTIONS for vacuum packaging in special containers (with vacuum probe)
Plug into the socket paying attention not do damage the cable by squashing under the equipment
- To carry out the vacuum packaging in special containers with the use of the vacuum
probe, it is necessary to push the main switch 0/1 (A).
- Put the vacuum probe on the special valve of the container
- Push the button C into the position ” * " Vacuum probe : the machine will carry out
the vacuum in the container and the cycle (30 seconds) will automatically stop.
- In case you want to increase the vacuum degree in the container, push the switch C
again and carry out another suction cycle.
 PRESERVATION TIME
It is not easy to define the precise preservation time because of the many different parameters that have to
be considered, i.e. nature of the product, freshness of the product at the moment of packaging, temperature
of the product, the environment and storage after packaging, real vacuum achieved in the bag, hygienic
conditions of the tools used, etc. .
 LIMITATIONS AND CONDITIONS OF USE
ATTENTION : It is absolutely forbidden to package the following products in order to avoid damaging the
machine and risk accidents to the operator :
- flammable or explosive materials and gas pressure bottles
- loose powders and volatile products (flour, sugar, etc.)
If liquid products are frequently packaged the oil must checked frequently and replaced (only for the CVE
420-OLIO model).
In fact the vapours, produced by the liquids under vacuum conditions, mix with the oil reducing its
lubrificating characteristics.
Fig. 4
O
N
OF
F
*
STO
P
Vacuum A
C
B

rev. 3 – 26/05/2008 8/10
 TROUBLESHOOTING
Following are few of the common troubles that can be solved without calling the maintenance service.
Trouble Cause Action
The main switch is OFF Main switch ON
Plug not in the socket Plug in
Nothing is shown on the
display Cable damaged Check the cable and replace it if necessary
The oil is spoiled Controllare l'olio della pompa ed
eventualmente sostituirlo
The room temperature is lower
than 12°C Place the equipment in a room with a temperature higher than 12°C
The pump does not work
The electrical connection is
wrong
The equipment must be connected with a
minimum cable section of (see REPLACING
OF THE CONNECTING CABLE)
Defective bag Replace the bag
Bag not inserted correctly Verify fig. 2
No vacuum is being carried
out in the bag Damage weather strip Replace the weather strip (seal)
Should it not be possible to solve the problem after having checked the above suggestions call the
maintenance service.
 CLEANING AND MAINTENANCE
ATTENTION : never use direct pressure water jet for cleaning.
Before any maintenance disconnect the machine from the power source.
- Cleaning can be started only when the equipment has cooled down. Cleaning the
equipment is very important. Good cleaning ensures the smooth operation of the
machine and gives a good impression to the customers.
- The stainless steel parts must be cleaned with water and appropriate detergent (do not
use abrasive products). Do not use metal brushes, their use could rust the equipment.
Do never and for no reason use acid containing detergents.
- For cleaning of the Plexiglass lid use a wet chamois-type cloth or similar.
- Before any long stand-by of the machine proceed carefully with the cleaning as
described above.
 VACUUM PUMP MAINTENANCE (only for the CVE 420-OLIO model)
Check periodically the oil level indicator of the pump (on the rear of the equipment) : an oil level over the
allowed maximum could cause clogging of the filter.
An oil level too low could cause a poor vacuum level and damage the pump.
Frequently replace the pump oil.
The pumping of pollutant compounds may require more frequent oil changes (even every 2/3 months).
If the oil appears dark, turgid or thick, the oil has lost its lub properties and needs to be changed
immediately.
For oil replacing please follow the scheme here below :
SHELL ESSO BP Oil quantity
TELLUS 32 NUTO H32 HLP 32 0,06 liters
Replace the pump oil before a long machine stop. A watered oil could damage or rust the pump tank.

rev. 3 – 26/05/2008 9/10
 REPLACEMENT OF THE WEATHER STRIP (SEAL)
Remove the weather strip (seal) and put one strip with the same characteristics.
 REPLACEMENT OF THE SEALING BAR TEFLON
Disconnect the machine from current and wait until the sealing bar has become cold. Now unscrew the two
lower screws of the sealing bar, lift the sealing bar up and disconnect all electrical wires.
Remove the adhesive Teflon, clean the sealing bar with a cloth drenched with nitro-detergent and replace
the Teflon, paying much attention to the sealing resistances.
Reconnect the electrical wires and put the sealing bar in its position and tighten the relative screws.
 REPLACEMENT OF THE COUNTER-BAR (placed in the cover)
Unscrew the screws of the side profiles of the cover and remove the cover.
Take off the old gasket and insert the new one in its slot lengthening it to cover the slot completely.
Reassemble the cover on the side profiles paying attention that the ends of the gasket are well fixed
between cover and side profiles.
 WARNING
- Get rid of the machine in a proper way following the national disposal rules.
- Always protect the machine from the interventation of not authorized persons.

rev. 3 – 26/05/2008 10/10
VACUUM PACKAGING IN THE FOOD SECTOR
With the vacuum packaging two main results for better preservation are achieved :
- no air in the packaging bag
- reduction of air in the product to be preserved
Thanks to vacuum packaging the product does not oxidize and does not decompose and can be preserved
longer.
The preservation time can be enhanced by combining a freezing process with the vacuum process.
In this case the results are exceptional.
USING IN CATERING AND RESTAURANTS
Preparation of dishes in restaurants during peak hours is critical. During these hours all working plans of the
restaurant have to be overruled. In these circumstances the prepared dishes normally suffer poor quality.
Vacuum packaging represent an important aid for the restaurants and the chef. In fact the preparation of
juices, sauces and other products frequently used in kitchens can be done in advance and the products can
be stored "ready to use".
VACUUM PACKAGING AND PRE-COOKED FOOD
During the cooking process the food gets in contact with the air and partially oxidizes, thus losing taste and
part of the nutrient properties.
Cooking the food in vacuum packaging eliminates this trouble because the product is protected in a heat-
resistant bag and therefore maintains its organolectic properties.
VACUUM COOKING
In Italy as well as in France and in Germany the vacuum packaging of previously cooked food is becoming
more and more normal practice.
In this way the taste and the nutrient characteristics of the food can me preserved satisfying every
requirements (also during peak hours in restaurants).
Heating up the vacuum packaged product at the desired temperature is all that is required.
VACUUM PACKAGING AND SLAUGHTERING
One of the major problems of the slaughtering process is the maturing (seasoning) of the meat that normally
takes place in refrigerated rooms. This operation involves loose of weight due to the oxidization process and
superficial drying of the meat.
With the vacuum packaging the maturing process of the fresh meat becomes longer, the meat remains
tender and taste is better. Thanks to the absence of air in the bag, vacuum packaged meat looks better and
does not decompose.
VACUUM PACKAGING AND RETAIL STORES
Thanks to the type of package, the extended preservation time and the perfectly hygienic conditions, the
vacuum packaged products are very well seen and accepted by the consumers.
THE MANUFACTURER DECLINES TO TAKE ANY RESPONSIBILITY IF
THE RULES WRITTEN IN THIS INSTRUCTION BOOK HAVE NOT BEEN
STRICTLY OBSERVED.