Vetter VCB C.Tec Quick guide

Article No. 9987072900 | © Vetter GmbH I 07/23 I Changes and errors excepted.
Emergency Pneumatics.
Translation of the
Original Operating Instructions
Vetter Connectable Bags
VCB and VCB N C.Tec 12 bar (174 psi)
Keep in a safe place for future use!

VCB and VCB N C.Tec Bags 12 bar (174 psi)
Page 1/22
Contents
1. Important preliminary remarks ....................................2
2. Product description ...............................................2
2.1 Description of the set .......................................2
2.2 Other accessories ...........................................5
2.3 Vetter safety coupling system ...............................6
2.4 Product description.........................................7
2.5 Correct usage.............................................11
2.6 Safety instructions ........................................11
3. Preparing the product for use ...................................14
3.1 Preparations for operation ................................ 14
3.2 Connecting the bags...................................... 14
3.3 Application instructions...................................15
4. Operating instructions .......................................... 15
4.1 Operation with compressed bottles .......................15
4.2 Operation with other sources of compressed air ...........16
4.3 Dismantling of the lifting bag system after use.............17
4.4 Limit for the period of use................................. 17
4.5 Care, maintenance........................................17
5. Elimination of defects ...........................................17
6. Storage.........................................................18
7. Repetitive tests .................................................19
8. Diagram: Force vs. Stroke (available on request).................. 19
9. Technical data ..................................................20
EC Conformity Declaration (available on request) ...................21

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1. Important preliminary remarks
Only the knowledge and exact observance of these operating in-
structions guarantees correct and professional operation, produ-
ces the greatest possible use and ensures any claims made within
the scope of the Vetter guarantee.
The handling of the Vetter VCB C.Tec (Vetter Connectable Bags -
Connectable Technology) is only to be made by trained persons
using the operating instructions of the manufacturer and the in-
formation from the user.
In addition to the operating instructions, all national, generally
applicable, statutory and other binding accident prevention re-
gulations must be observed and instructed.
The disposal of discarded lifting bags is to be carried out accor-
ding to disposal regulations valid for the region.
The operating instructions given here are to be regarded as part
of the product and are to be kept for the complete life duration of
the product. In case the product should be passed on to a succes-
sive user then the operating instructions must also be included.
2. Product description
2.1 Description of the set
a. C.Tec Bag 12 bar (174 psi)
The selection of bag size must correspond to operation requi-
rements. There are 3 sizes available from 30 t, 75 t and 172 t.
b. Connecting pins
By using the connecting pins, all bag sizes of the C.Tec series can
be connected to each other to form a lifting system comprising
max. three bags.
This pin has been designed so that the bags can only be connec-
ted from one position. This ensures that the hose connections of
the individual bags are always perpendicular to each other and
that no hoses are unintentionally under the load. This increases
the safety factor for the operator many times over, see chapter 3.2.
c. Ination hoses
In order to inate C.Tec Bags 12 bar from a safe position for the
operator, there are ination hoses available with lengths of 5 m
and 10 m. The hose colours are used exclusively to assist the ope-
rator in recognizing the correct side when controlling the C.Tec
Bags 12 bar.

VCB and VCB N C.Tec Bags 12 bar (174 psi)
Page 3/22
d. Controller 12 bar
When lling and deating of the bags, the
manometer and the load must be observed.
Air CU (Control Unit) 12 bar deadman
Connect the ination hoses on the output couplings on the rear
side of the controller. Connect the air suppply to the input coup-
ling on the side. Move the switching lever towards you in order
to inate the C.Tec Bag. In doing this, observe the corresponding
manometer and the movement of the load. When the required
operating pressure for the lifting power or lift height is reached,
terminate the ination sequence by releasing the lever. Latest
when the safety valve blows o or the red marking is reached!
The switching lever automatically returns back to the zero posi-
tion (dead-man switching). The integrated safety valve activates
automatically as soon as the maximum operating pressure of 12
bar is exceeded when inating or when there is a sudden increase
in bag pressure caused by an unintended loading of the bag.
The activation tolerance for opening and closing of the
safety valve must only be a maximum of +/- 10%.
Press the switching lever in the opposite direction in order to de-
ate the bag or to lower the load.
The lighting of the control element illuminates all couplings,
switch levers and manometers. It is switched on and o with
switch (1) on the side.
The control element is supplied by a 9 V block battery. Since the
entire lifting bag system is designed for a temperature range of
-20 °C to +55 °C, only batteries with this temperature range are
allowed to be used. Based on the current state of the art, only li-
thium batteries meet this requirement.
To insert the battery, unscrew the battery compartment, replace
the old battery with a new one and screw the battery compart-
ment back together.
Control elements with lighting come under the German Law on
electrical and electronic devices (ElektroG) of 24 March 2005 for
implementation of the EC Directive 2002/96/EC on electrical and
electronic waste – WEEE Directive.
The label attached to the battery compartment cover points
out that the electronic components in this product must not be
handled as domestic waste; they have to be returned to the ma-
nufacturer (return freight paid) for recycling.
1
Dierent couplings!

Page 4/22
Dual deadman controller 12 bar / 174 psi,
aluminium style, connectable
Connect the lling hose to the outlet couplings (4) on the rear of
the control element. Connect the air supply to the lateral inlet cou-
pling (1). To ll the VCB C.Tec Bags press the lower“+”push-button
(2). When the desired operating pressure has been reached for the
lift force or lift height, discontinue the lling process by releasing
the push-button. Release latest when the safety valve blows o
or the red marking has been reached! During this process, the
push-button independently returns to the zero setting (deadman
switch). If you overll the bags past the maximum operating pres-
sure of 12 bar or if there is an unexpected additional load on the
bag, the integrated safety valve automatically blows o.
The activation tolerance for opening and closing of the
safety valve must only be a maximum of +/- 10 %.
To drain the bag or lower the load, press the upper“-”push-button
(3).
To prevent long-term damage of the membranes in the interior,
vent the control element after use. To vent, rst press all push-
buttons (+ / -) one time.
Connecting and disconnecting two double control elements
To link, connect the nipple (5) of the left control element with the
inlet coupling (1) of the next control element. Swivel the transom
(7) on the rear of the right control element to the side of the left
control element and screw it tight with the star screws (6).
The control elements are now connected and will be supplied
with compressed air through the inlet coupling of the left control
element.
Before separating, disconnect the air supply connection and de-
pressurise the control element by pressing the push-buttons.
Note:
Do not separate the control elements as long as the bags are con-
nected.
Loosen the star screws on the rear and swivel the transom back
into place. Press both control elements together, pull back the
union nut of the inlet coupling of the right control element and
then let go of both control elements. The control elements are
now disconnected.
If the transom and the star screws are not going to remain on the
control element, keep them together in a bag.
4
3
2
15
6
7
5
6
7
1

Protective cap VCB N
Protective cap VCB
VCB and VCB N C.Tec Bags 12 bar (174 psi)
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e. Protective cap
To protect the load plate and the adhesive rubber
against damage, the Vetter protective cap must be
used every time the C.Tec lifting bags are used.
The protective cap also increases the friction
between the load plate and the ground or the
load plate and the load to be lifted. This reduces
the risk of the lifting bag being thrown out and
the load plate and the adhesive rubber being damaged.
Inventory check
On acceptance of the C.Tec Bag equipment a check is to be made to see if
the delivery is complete according to the delivery note. In addition to this
a visual check and function test is to be made according to the operating
instructions.
2.2 Other accessories
Pos. Artikel-Nr. Bezeichnung
1
1600034000
or
1600032000
Pressure regulator 200/300
bar
US Version 4500 psi
(not compatible with below
mentioned compressed air
bottles)
21600010800 Comp. air bottle 6 l / 300 bar
31600019900 Comp. air bottle 9 l / 300 bar
41600009100 Dual connector 300 bar
51600014500 Pressure regulator
61600012000 Adapter for construction site
compressor

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71200008800 Connecting pin VCB N
81000012500 Valise VCB N 30
91000012600 Valise VCB N 75
10 1000012700 Valise VCB 172
11 1200009700 Protective cap VCB N 30
12 1200009800 Protective cap VCB N 75
13 1000012700 Protective cap VCB 172
2.3 Vetter safety coupling system
The S.Tec and C.Tec series are provided with the same coupling system.
That means Vetter 12 bar accessories can be used for both bag series.
a. Input coupling of the controller
Connect the air supply hose or the connection hose of the pressure re-
gulator to the nipple of the input coupling (1) on the controller pushing
the nipple solidly into the coupling until the ratchet action can be felt. In
order to ensure that it is correctly connected: turn the brass sleeve (2) of
the coupling opposite to the safety pin (3).
b. Couplings of the ination hose
To connect the ination hoses to the corresponding controller or to the
C.Tec Bag, press the hoses or bag nipple solidly into the coupling until
the ratchet action can be felt.The coupling sleeve must be seated on the
support ring without any gap (1). To release the connection (only in the
pressure-free condition) the nipple must be solidly pressed against the
spring pressure in the coupling. At the same time the coupling sleeve
must be pushed back. The coupling then releases.
1
2
3
1

VCB and VCB N C.Tec Bags 12 bar (174 psi)
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c. Ination with an 8 bar or 10 bar ination device
The C.Tec 12 safety coupling system facilitates lling the pad with
the Vetter 8 bar or 10 bar system. However, do this only in excep-
tional cases since in such a case the pad cannot lift with its entire
lifting force.
2.4 Product description
VCB C.Tec Bags are made by hand from high quality raw materials
so that after completion, a seamless bag is produced. The semi-
nished product is vulcanized under the inuence of pressure
and temperature and by doing this the individual layers bond to
form an elastomer body. After production has been nalized, each
C.Tec Bag is subjected to a plant acceptance test within the scope
of quality assurance.
Material of the C.Tec Bag: CR/Aramide, hot vulcanized
Small folds form in the edge area during the lling pro-
cess. That is attributable to the setup and the design but
does not impair the functioning. They disappear as the
pressure builds up to the permissible operating pressu-
re.
Temperature resistance of C.Tec Bags:
Cold resistance -40 °C
Cold exible -20 °C
Heat resistance long-term +55 °C
Heat resistance short-term +70 °C
The aramid reinforcement of the C.Tec bags
can be damaged if the surface of the bag is
damaged by cuts, cracks or puncturing and
by the exposure to ozone and sunlight.
Perform a visual inspection after each use. Pay particular attention
to the following damage:
9Damage by separation
9Damage by cuts
9Damage by punctures
9Damage by heat and chemicals
Danger of bursting! If, when carrying out
the check, this type of damage is
determined then the bag is to be
immediately taken out of service.
Repair is not possible.

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During the lifting process, at least 2/3 (red area) must be fully inserted
under the load. In order to use the theoretical maximum lifting force, the
entire eective area (red + green area) must be fully underneath the load
to be lifted and pressure must be applied to the lifting bag with the max.
permissible operating pressure.
With increasing height, the lifting bags takes on a attened spherical
shape; under certain circumstances the load will rotate around a pivot
point due to a one-sided lifting process. That reduces the contact area
to the load up to the predened nal lifting force at a dened lift height.
The lifting bag only reaches the greatest possible lifting height in the
unloaded state.
Pay attention to the insertion height before use. Under certain circum-
stances, the load rst has to be lifted with a at lifting bag until there is a
suciently large opening.
In case the lifting power produced by the C.Tec Bag is not sucient, de-
pending on the lift height, then a number of C.Tec Bags can be placed
next to each other. The lifting capacity doubles.
In case the lifting height is not sucient when using only one C.Tec bag,
a maximum of 3 bags can be connected to form a lifting system using
the connecting pins when the load is non-slip. In this application, the
respective lifting heights of the C.Tec bags used add up. However, the
lifting force corresponds only with that of the smaller bag.
Eective area
Pivot
Maximum
lift height
Insertion
height

VCB and VCB N C.Tec Bags 12 bar (174 psi)
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For safety-engineering reasons however only the
following combinations can be braced into a lifting
system:
Combination 1 Combination 2 Combination 3
Max. three bags of
the same size
One small bag on two
bags of the same size
One VCB N 30 on two
VCB N 75‘s,
one VCB N 75 on two
VCB 172‘s
Three bags of
dierent sizes
The stack is built up
from the largest bag
at the bottom to the
smallest at the top.
Combination 1 provides the greatest safety and stability and
should be preferred over Combination 2 and 3. Combination 2
is preferable to Combination 3!
Never use the following combinations:
Combination 1 Combination 2 Combination 3
A smaller bag un-
der a larger bag
A lifting bag system
made of more than
three bags
Two bags of the
same size on one
larger bag
The user must be aware of these combinations.
They must be taken into account during
deployment!