VERACHTERT VRG User manual

demolition and sorting grab
VRG
operating manual
Edition 07.02
your supplier:
GEBJ1143

© Copyright Veratech Holding B.V.
All rights strictly reserved. Reproduction
to third parties in any form whatever is not permitted
without written authority from the proprietor.

VRG VERACHTERT
07.02 all rights reserved
1
DEAR USER,
The VERACHTERT demolition and sorting grab VRG is a high quality product which
will help you to efficiently perform several demolition and sorting operations.
You are urgently requested to read the operating manual and to carefully execute the
instructions when working with the equipment.
VERACHTERT products bear the CE mark and comply with all the relevant EC safety
requirements. However, it remains necessary to make sure that the safety
requirements are met for all operations, maintenance or repair works. This refers to the
safety regulations mentioned in this book, in the operating manual of the machine and
in the local safety regulations valid for the area in which the VERACHTERT product is
being used, maintained or repaired.
Modifying the VERACHTERT product is only allowed with the permission of your
supplier!
Only then the warranty conditions and CE liability apply.
Warnings
Only qualified persons are permitted to operate the excavator.
Maintenance or repair jobs can only be carried out by well qualified technical
personnel.
Prevent unsafe work situations. Keep your limbs from moving parts.
Be aware that there are no persons within the reach of the excavator.
When leaving the excavator, position the grab VRG with opened shells on a flat
surface.
Stop the engine before starting maintenance or repair operations. Make sure the
safety precautions are met!
Defective parts must be replaced by original VERACHTERT parts.
In this product mineral oil is used. When applying other types of hydraulic oil
problems may arise. In case of questions, first contact your supplier.

VERACHTERT VRG
all rights reserved 07.02
2
Warranty and service
The warranty obligation of the supplier depends on the correct installation of the
product. Check the working pressure of your machine first. Should there be any
questions, contact your supplier.
Unless otherwise agreed upon, the terms of warranty drawn up by ORGALIME in the
publication of October 1992 apply to this product. Some of the clauses from these
terms can be found at the back of this book.
VERACHTERT is continually improving its products. It reserves the right to change its
products without prior notice.
Apart from supplying a complete range of wrecking tools and other equipment
VERACHTERT can also supply the following services:
- installation service;
- supplying (spare) parts for the equipment;
- repair works and complete revisions.

VRG VERACHTERT
07.02 all rights reserved
3
C O N T E N T S
page
1. PRODUCT IDENTIFICATION..................................................................................................................4
2. HOISTING THE VRG GRAB ...................................................................................................................6
3. PRODUCT OVERVIEW AND TECHNICAL SPECIFICATIONS.............................................................7
3.1 VRG-GRAB MODELS.............................................................................................................................8
3.2 OPTIONS AND CODES ...........................................................................................................................9
3.3 TECHNICAL DATA................................................................................................................................10
3.4 CALCULATING THE EXCAVATOR/EQUIPMENT COMBINATION ...................................................................11
4. INSTALLING THE VRG GRAB .............................................................................................................13
4.1 HYDRAULIC COUPLERS .......................................................................................................................14
4.2 MOUNTING THE VRG GRAB TO THE EXCAVATOR ..................................................................................17
4.3 VENTING THE HYDRAULIC SYSTEM.......................................................................................................18
4.4 MEASURING WORKING PRESSURES AND OPENING AND CLOSING TIMES..................................................19
5. OPERATION ..........................................................................................................................................21
6. THE APPLICATION OF LOADING AND BREAKING PLATES ..........................................................23
7. MAINTENANCE AND REPAIR .............................................................................................................25
7.1 SAFETY PRECAUTIONS .......................................................................................................................26
7.2 DAILY MAINTENANCE ..........................................................................................................................28
7.3 WELDING THE VRG GRAB ..................................................................................................................29
7.4 REPLACING REMOVABLE EDGES ..........................................................................................................29
7.5 TORQUE VALUES FOR METRIC THREAD JOINTS .....................................................................................29
8. HYDRAULIC DIAGRAM........................................................................................................................30
9. SPARE PARTS......................................................................................................................................32
WARRANTY CONDITIONS........................................................................................................................33
INFORMATION SHEET ..............................................................................................................................35

VERACHTERT VRG
all rights reserved 07.02
4
1. Product identification
VERACHTERT
Veratech Holding B.V. •P.O. box 3100 •NL-5203 DC •‘s- Hertogenbosch •The Netherlands
ITEM No. / MODEL :
SERIAL No. :
CUSTOMER No. :
CAPACITY [kg] :
MACHINE TYPE :
HYD. FUNCTION :
p max. [bar] :
q max. [l/min] :
/
YEAR :
MASS [kg] :
VOLUME [m³] :
VOLTAGE [V] :
194-1424
Type label of the VRG grab
a. VRG type : . . . . . . . . . . . . . .
b. serial number : . . . . . . . . . . . . . .
c. year of manufacture : . . . . . . . . . . . . . .
e. mass [kg] : . . . . . . . . . . . . . .
The CE mark is located on the identification plate.
2 : 1 :

VRG VERACHTERT
07.02 all rights reserved
5
1.1 Dimensions frame
This operating manual applies to the frame with the following dimensions in mm:
T1 : . . . . . . . . .
T2 : . . . . . . . . .
T3 : . . . . . . . . .
.
.
.
Figure 1.1.1.

VERACHTERT VRG
all rights reserved 07.02
6
2. Hoisting the VRG grab
Only use the eyes of the machine suspension or the holes in the adapter plates
of the quick exchange system for hoisting the VRG grab! (see the arrows in
figure 2.1).
It is allowed to lift the VRG grab with the forks of a fork-lift truck. The shells of the VRG
05, 10, 20 and 25 must be opened when lifting, see figure 2.1.
. .
Figure 2.1.

VRG VERACHTERT
07.02 all rights reserved
7
3. Product overview and technical specifications
page
3.1 VRG-GRAB MODELS.............................................................................................................................8
3.2 OPTIONS AND CODES ...........................................................................................................................9
3.3 TECHNICAL DATA................................................................................................................................10
3.4 CALCULATING THE EXCAVATOR/EQUIPMENT COMBINATION ...................................................................11

VERACHTERT VRG
all rights reserved 07.02
8
3.1 VRG-grab models
The VRG demolition and sorting grab is a grab especially designed for demolition and
sorting operations. The VRG grab has a low construction height and a wide spread of
the shells. Also refer to the dimensions in the table with technical data.
The shells have been provided with wear resistant lower knives. Each shell is driven by
a hydraulic cylinder.
The grab has been provided with a swivel head for unlimited rotation of the grab, both
clockwise and counterclockwise. The hydraulic components and hoses are fully
protected.
For mounting the VRG grab to the excavator the VRG grab has been fitted with
excavator dependent suspension plates or adapter plates for the Connect'o'maat quick
exchange system®. Figure 3.1 shows the version with the adapter plates for the quick
exchange system®
The following options are available for the VRG demolition and sorting grab:
- exchangeable lower knives
- demountable side plates: (does not apply to the VRG 05 and 10)
loading plates for sorting operations
breaking plates for sorting demolition materials
- 6/2 valve: when the excavator has only a separate hydraulic function this valve can
be used to control two hydraulic functions of the piece of equipment (does not apply
to the VRG 05 and 10).
For dimensions and technical specifications: see the next page.

VRG VERACHTERT
07.02 all rights reserved
9
3.2 Options and codes
Meaning of the type indication for the VRG grab:
Example: VRG 20 K D V O
option detachable lower knife
option 6 / 2 valve
option detachable loading plate
option detachable breaking plate
class
product description
Product description: description of the product
Class: Indication for the mass of the excavator for which
the VRG grab was designed.
Option detachable breaking plate: K: Yes
N: No
Option detachable loading plate: D: Yes
N: No
Option 6 / 2 valve: V: Yes
N: No
Option detachable lower knife: O: Yes
N: No

VERACHTERT VRG
all rights reserved 07.02
10
3.3 Technical data
. .
Figure 3.3.1.
SPECIFICATION VRG-05 VRG-10 VRG-20 VRG-25
capacity [l] acc. SAE J742 B 100 140 300 500
dimensions [mm] A 915 815 1050 1220
B 1400 1650 1700 2040
W 400 515 850 1000
H1 1000 1150 1245 1515
H2 935 1040 1110 1315
closing force on edges [kN] A 10 15 35 50
hydraulic of the shells
p max.[bar] 300 300 350* 350*
q max.[l/min] 20 40 80 100
connection acc. DIN 3853 12 S 20 S 20 S 20 S
hydraulic for rotation
p optimal[bar] 300 200 200 200
q optimal [l/min] 20 18 40 40
connection acc. DIN 3853 12 S 16 S 16 S 16 S
excavator class [ton]
for sorting operations 2,5 - 3,5 3,5 - 6,5 6,5 - 13 12 - 20
for demolition operations 2,5 - 3,5 3,5 - 6,5 6,5 - 13 12 - 20
lifting cap. excavator [kN] 15 25 30 45
* when a 6/2 valve is used p max: 300 bar

VRG VERACHTERT
07.02 all rights reserved
11
3.4 Calculating the excavator/equipment combination
The piece of equipment is made for a certain application. If the technical specifications
of the excavator and the work to be done are known, it will be determined whether the
combination excavator/piece of equipment is "safe". A combination of excavator and
additional equipment is safe, if the combination is sufficiently stable, and if the
excavator performance is not too powerful for the additional equipment.
If, after placement into use, the piece of equipment is used on an excavator with other
technical specifications, first check to determine whether the new combination is safe.
VERACHTERT makes it possible for you to determine this yourself. Complete the
technical specifications of both the excavator and the piece of equipment on the
calculation sheet.
To calculate the location of the centre of gravity, you should take half the length of the
VRG grab. See figure 3.4.1.
Figure 3.4.1.
The data on the piece of equipment can be found on the model plate on the product,
and in chapter 1 of this manual.
A calculation table is included at the end of this operating manual and is also available
from your supplier.
For further information about calculating a combination of excavator and piece of
equipment, contact your supplier.
Note:
If an excavator/attachment combination is not safe, then the attachment must not
be connected to the excavator.
In an unsafe excavator/VT demolition equipment combination the warranty obligations
and CE-liability for VERACHTERT become null and void.

VERACHTERT VRG
all rights reserved 07.02
12

VRG VERACHTERT
07.02 all rights reserved
13
4. Installing the VRG grab
Note:
Installing can only be carried out by well qualified technical personnel.
page
4.1 HYDRAULIC COUPLERS .......................................................................................................................14
4.2 MOUNTING THE VRG GRAB TO THE EXCAVATOR ..................................................................................17
4.3 VENTING THE HYDRAULIC SYSTEM.......................................................................................................18
4.4 MEASURING WORKING PRESSURES AND OPENING AND CLOSING TIMES..................................................19

VERACHTERT VRG
all rights reserved 07.02
14
4.1 Hydraulic couplers
For operating the VRG grab the excavator must be fitted with 2 independently
controllable hydraulic functions. One for opening and closing the grab shells and the
other for rotating the grab.
Design of hydraulic functions on excavator:
rotation : proportional operation preferred
opening and closing of grab blades : proportional operation is required
When the excavator has only been provided with one independent hydraulic function
for the equipment the VRG grab can be provided with a 6/2 valve (does not apply to the
VRG 05 and 10). This valve can be used to control the two functions of the grab by
means of the available hydraulic function. The 6/2 valve is controlled via solenoid valve.
The required voltage for controlling the 6/2 valve is 24 V.
The VRG is supplied with hose nipples in accordance with figure 4.1.1.
See for the connection points the various figures and the table below. See for oil
pressure and oil flow the technical data in chapter 3.
Attention:
For safety reasons and with respect to environmental aspects the oil lines on the
boom of the excavator must be equipped with ball valves and/or quick couplers!
The figure below shows the hose nipple which is supplied with the VRG.
24
D2
d
D1
Figure 4.1.1.
VRG-05 VRG-10
D1 D2 d [mm] D1 D2 d [mm]
P1;P2 M18x1,5 M20x1,5 12 G 3/4” M30x2 20
P3;P4 M18x1,5 M20x1,5 12 G ½" M24x1,5 16
VRG-20 VRG-25
D1 D2 d [mm] D1 D2 d [mm]
P1;P2 G 3/4" M30x2 20 G 3/4" M30x2 20
P3;P4 G ½" M24x1,5 16 G ½" M24x1,5 16

VRG VERACHTERT
07.02 all rights reserved
15
The figures 4.1.2. up to 4.1.5. are the top vieuws of the swivel heads of the VRG.
Figure 4.1.2.: connections to VRG-05
Figure 4.1.3.: connections to VRG-10
Figure 4.1.4.: connections to VRG-20 A: without 6/2 valve
B: with 6/2 valve

VERACHTERT VRG
all rights reserved 07.02
16
A
Figure 4.1.5.: connections to VRG-25 A: without 6/2 valve
B: with 6/2 valve

VRG VERACHTERT
07.02 all rights reserved
17
4.2 Mounting the VRG grab to the excavator
The VRG grab is equipped as standard with adapter plates for the Connect'o'maat®
quick exchange system. See the Connect'o'maat® user's manual for connecting the
VRG grab to the excavator boom. Follow the instruction below for mounting to the
excavator boom when the VRG grab has been provided with machine suspension
eyes:
1. First check whether the combination of additional equipment and excavator is safe.
See chapter 3.3.
2. Grease the suspension pins prior to assembly
3. Apply the pins correctly (see excavator manual)
Attention:
Never put your fingers in the suspension eyes to check the alignment of the
holes!
4. Lock all pins!
5. Lubricate the suspension eyes (see excavator manual).
6. Move the bucket cylinder of the excavator in and out completely and check that the
VRG grab runs smoothly.
7. Mount the hydraulic hoses.
The hydraulic hoses are not included in the standard delivery and must be ordered
separately.
Only use hydraulic hoses with the specifications from the tables on the next page.
Make sure the hoses are long enough and check that they cannot be pinched by a
movement of the excavator or the grab.
Attention:
Clean the oil couplers prior to connection. Dirt penetrating into the hydraulic
system may cause damage!
When disconnecting the hydraulic wrecking tool: interconnect the hoses or shut
the couplers off using plugs!
Note: Not all hose specifications are given. Hoses suited for higher pressures can be
used as well.
specifications for hydraulic hoses for opening/closing
grab shells
specifications for hydraulic hoses for rotating
grab shells
VRG-05 d inner: 3/8" DIN 20 022
2SN
d inner: 3/8" DIN 20 022 2ST DIN 20 022
2SN
VRG-10 d inner: 5/8" DIN 20 023 4SP d inner: 1/2" DIN 20 022 2ST DIN 20 022
2SN
VRG-20 d inner: 5/8" DIN 20 023 4SP d inner: 1/2" DIN 20 022 2ST DIN 20 022
2SN
VRG-25 d inner: 5/8" DIN 20 023 4SP d inner: 1/2" DIN 20 022 2ST DIN 20 022
2SN

VERACHTERT VRG
all rights reserved 07.02
18
4.3 Venting the hydraulic system
After the installation of the VRG grab on the excavator or after works on the hydraulic
system of the VRG grab the hydraulic system must be carefully vented.
After installing the VRG grab on the excavator or after operations to the hydraulic
system of the VRG grab all air must be vented from the cylinders.
When there is still air present in the cylinder(s) and the oil in the cylinder(s) is
pressurized the oil may ignite spontaneously due to dieseling. This definitely causes
damage to the cylinder(s).
venting cylinders: open and close the shells of the VRG grab 3 or 4 times in a row.
Do not use any extra pressure!
In this way the air is discharged to the excavator.