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© 2022 Dehaco B.V. • Operation and maintenance manual DSG Demolition and Sorting grabs • No. DSG.2165.0001 • 31-01-2022

Dehaco B.V. • Kruisbaak 25 • 2165 AJ Lisserbroek (NL) • 

 +31 (0)252 - 41 79 50 • 

 [email protected] • www.dehaco.nl

1. Precautions and safety instructions

1. Precautions and safety instructions

entire construction zone.

 DANGER! 

- EXPLOSION AND FIRE

The use of the demolition and sorting grab may
cause sparking which could ignite highly flammable
gases. This may result in fire or explosion.

 

Ø

Never work in an environment with highly flammable 
substances.

 

Ø

Ensure there are no hidden gas sources in the work area.

 

Ø

Inspect the gas line drawings for the work area.

 DANGER! 

- EXPLOSION AND FIRE

Dust rich air can form an explosive atmosphere which can 
ignite when using the demolition and sorting grab. This can 
lead to fire or explosion.

 

Ø

Never use the demolition and sorting grab in an explosive 
atmosphere.

 

Ø

Always ensure adequate ventilation is provided when 
working in buildings or in an enclosed area. 

1.10 Elektric shock, precautions

 DANGER! 

- ELEKTRIC SSHOCK

Any contact between the demolition and sorting grapple
and electrical circuits or other power sources will cause an
electric shock which could result in serious injury or death. The
demolition and sorting grab is not electrically insulated.

 

Ø

Never work near electrical circuits or other power sources.

 

Ø

Ensure there are no hidden electrical circuits are in the work 
zone.

 

Ø

Consult wiring diagrams.

1.11 Falling rocks, precautions

 WARNING!

- AIRBORNE FRAGMENTS

Material which breaks free can be thrown and cause serious 
injury. Even small objects falling from a great height can cause 
serious damage. 
 
While using the demolition and sorting grab, the danger zone is
considerably greater than during regular excavation work. The 
danger zone must therefore be enlarged or secured in a suitable 
manner.

 

Ø

Safeguard the danger zone.

 

Ø

Stop the works immediately when someone enters the 
danger zone.

 

Ø

Close the windscreen and side windows of the excavator 
cabin.

 

 

1.12 Emissions, precautions

 WARNING!

- LUNG DISEASES CAUSED BY DUST

Using the demolition and sorting grab may release dust. Dust
produced during the demolition/moving/sorting of rocks,
concrete and asphalt or other similar materials can lead to
silicosis (also called black lung disease) by inhalation. Silicosis
is a chronic condition that can lead to cancer and death.

 

Ø

Wear suitable respiratory protection.  

1.13 Operating machines, precautions

 WARNING!

- NARCOTICS, ALCOHOL AND DRUGS

Narcotics, alcohol and drugs make the user less attentive and
affect the ability to concentrate. Carelessness and incorrect
assessment of a situation may result in serious injury or death.

 

Ø

Never work with the excavator and hydraulic work tool 
when under the influence of narcotics, alcohol or drugs that 
affect concentration.

 

Ø

Never allow other people under the influence of narcotics, 
alcohol or drugs that affect concentration work with the 
excavator and the demolition and sorting grab. 

1.14 Modifications or 

changes, precautions

 WARNING!

- MODIFICATIONS OR CHANGES

Modifications to the demolition and sorting grab or
the adapter plate can lead to serious injury.

 

Ø

Never modify the demolition and sorting grab.

 

Ø

Use only original parts or accessories approved by Dehaco.

1.15 Environmental 

contamination, precautions

ATTENTION
- ENVIRONMENTAL CONTAMINATION BY HYDRAULIC OIL

Hydraulic oil is harmful to the environment. When hydraulic oil is 
released (e.g. by leakage) the groundwater and soil may become 
contaminated causing organisms to die.

 

Ø

Collect all spilled hydraulic oil to prevent environmental 
contamination. For small amounts, use absorbent material. 
Ensure it does not make its way into the soil, groundwater 
or water lines.

 

Ø

Collect the contaminated absorbent material in an airtight 
container and seal it well.

 

Ø

Contact a licensed waste disposal company.

 

Ø

Remove all contaminated materials in accordance with 
current environmental regulations.

Summary of Contents for DSG

Page 1: ...DSG Hydraulic demolition and sorting grabs Operation and maintenance manual DSG V2 0 31 01 2022 English ...

Page 2: ...tems and asbestos tools also contribute to Dehaco s unique market position Dehaco is a market leader in the Benelux in the field of asbestos remediation products dust control products and hydraulic equipment units for the demolition sector Dealers Dehaco works with a network of global dealers for the sale of demolition equipment asbestos removal and dust control products These dealers are also qua...

Page 3: ... 3 TRANSPORT 13 3 2 Transport with a fork lift truck 13 3 3 Transport by lorry 13 4 INSTALLATION 14 4 1 Hydraulic fluids 14 4 2 Attaching to the excavator 15 4 3 Detaching the demolition and sorting grab from the excavat 16 4 4 Detaching the adapter plate 17 5 OPERATION 18 5 1 Preparations for starting 18 5 2 Switching the demolition and sorting grab on and off 18 5 3 Function test 18 5 4 Proper u...

Page 4: ...must comply with applicable health and safety regulations Always wear the following personal protective equipment safety helmet safety goggles with side shields safety gloves safety shoes warning vest 1 6 Transport precautions WARNING FALLING SUPPORT If the load bearing capacity of the excavator is not sufficient it will not be stable when using the demolition and sorting grab The excavator could ...

Page 5: ...ger zone Ø Stop the works immediately when someone enters the danger zone Ø Close the windscreen and side windows of the excavator cabin 1 12 Emissions precautions WARNING LUNG DISEASES CAUSED BY DUST Using the demolition and sorting grab may release dust Dust produced during the demolition moving sorting of rocks concrete and asphalt or other similar materials can lead to silicosis also called bl...

Page 6: ...n The demolition and sorting grab is opened by operating a foot pedal or joystick in the excavator cabin Oil is brought to the cylinders through line A causing the piston rod to retract and the shells to open Rotate Activate the function Rotate grab This carries hydraulic oil to the demolition and sorting grab motor and activates the rotation function To achieve infinite rotation the demolition an...

Page 7: ...hines with suitable capacity to transport the demolition and sorting grab Ø Ensure no persons are in the vicinity of the demolition and sorting grab Transport the demolition and sorting grab with the shells open The demolition and sorting grab is more stable when being transported with the shells open There is also less oil in the demolition and sorting grab when the shells are open As a result le...

Page 8: ...mix mineral oil with non mineral oil Even small traces of mineral oil mixed with non mineral oil may result in damage to both the demolition and sorting grab as well as the excavator Non mineral oil loses its biodegradability Ø Use only one type of hydraulic oil If non mineral oil is used the brand must be indicated when the demolition and sorting grab is brought in for repair To protect the envir...

Page 9: ...ate function to the arm carefully to prevent pinching WARNING THRASHING HYDRAULIC HOSES Hydraulic hoses under pressure will thrash about if a bolt connection becomes loose or detached This can cause serious injury Ø Tighten the mounting screws to the correct torque 4 3 Detaching the demolition and sorting grab from the excavator WARNING UNEXPECTED MOVEMENTS Sudden movements by the excavator can ca...

Page 10: ...cavator cabin Precautions for starting the demolition and sorting grab Ensure the demolition and sorting grab is complete Inspect the demolition and sorting grab and adapter plate for cracks Ensure there are no leaks from the hydraulic lines The preparations required prior to starting the demolition and sorting grab depend on the ambient temperature Ambient temperatures below 0 C see Low ambient t...

Page 11: ...gs vertically Close open and rotate the demolition and sorting grab while the excavator is warming up ATTENTION DAMAGE TO HYDRAULIC COMPONENTS Hot hydraulic oil will damage a cold hydraulic demolition and sorting grab Do not fill the hydraulic system with hot hydraulic oil The temperature of the hydraulic oil from the excavator must be at least 0 C Start the demolition and sorting grab when the te...

Page 12: ...orting grab while operating the grab This can cause severe damage to the demolition and sorting grab 5 5 9 Extending the bucket cylinder Never extend the cylinder while operating the grab This action will make the demolition and sorting grab unusable 5 5 10 Pulling Never use the demolition and sorting grab to pull on support beams supports or walls This could result in severe damage Moreover the e...

Page 13: ...tings become very hot during operation Contact with these components can cause burns Ø Never touch hot components Ø If works need to be completed on or near hot components wait for them to cool down first WARNING UNINTENTIONAL STARTING Unintentional starting of the excavator demolition and sorting grab can lead to serious injury Ø Follow the instructions to avoid unintentional starting WARNING UNE...

Page 14: ...for the cylinders 6 1 1 Lubrication schedule 6 1 2 Changing replacing wear blades 1 Ensure the nut is installed with the conical side on the inside of the shell 2 Bolts must be tightened to the torque indicated on the table on page 27 1 Lubricating pivot points 1 1 x per 8 operating hours 2 Lubricating pivot points 1 1 x per 8 operating hours 3 Lubricating slewing ring 1 1 x per 8 operating hours ...

Page 15: ... operating pressure Workshop or Dehaco dealer service technician Cause Solution By who Rotary motor gear unit slewing ring rotation transmission defect Inspect the rotary motor gear unit slewing ring rotation transmission and replace the defective parts Workshop or Dehaco dealer service technician Cause Solution By who The oil level in the tank is too low Check the oil level and top up if necessar...

Page 16: ...ng grab WARNING RISK OF TIPPING If the demolition and sorting grab tips over while stored this can lead to serious injury and property damage Ø Preferably position the demolition and sorting grab on square wooden beams or a pallet Ensure the horizontal surface is level 9 1 1 Procedure for storage 1 Open the shells of the demolition and sorting grab The demolition and sorting grab is more stable wh...

Page 17: ...00 F DSG150 F DSG250 F DSG400 F DSG450 F DSG452 F DSG502 F DSG603 F Technical specs Excavator weight 1 t 0 7 1 2 1 2 1 2 3 2 5 4 4 6 5 9 6 11 7 12 10 16 Weight standard 2 kg 50 65 100 200 280 330 340 500 600 Cylinders 1 1 1 1 1 1 1 1 1 Operating pressure bar 300 300 300 300 300 300 300 350 350 Oil flow l min 15 20 25 35 40 50 50 90 100 Shell width A mm 300 350 450 500 600 700 700 600 800 Height op...

Page 18: ...osed E mm 430 500 545 785 780 850 890 885 1 055 1 070 1 170 1 180 1 170 1 180 1 175 1 175 1 300 1 300 Capacity l 30 40 70 100 100 150 200 200 300 400 500 500 600 600 700 700 750 750 Closing force kN 6 7 15 20 20 23 24 24 30 35 46 46 46 46 46 46 55 55 Article number 1210 0018 1210 0001 1210 0006 1210 0010 1210 0088 1210 0014 1210 0016 1210 0062 1210 0037 1210 0055 1210 0057 1210 0086 1210 0058 1210...

Page 19: ... Lisserbroek NL 31 0 252 41 79 50 info dehaco nl www dehaco nl Dehaco B V Headquarters Kruisbaak 25 2165 AJ Lisserbroek The Netherlands Raamsdonksveer Steurweg 1 4941 VP Raamsdonksveer The Netherlands T E www dehaco nl 31 0 252 41 79 50 info dehaco nl ...

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