DALBO MINIMAX 950 User manual

MINIMAX
User instructions
Date of publication: 01/2021
Date printed: 01/2021
Language: EN
Type: MINIMAX 950
Product no.: MINIMAX 950
Serial no.: 56270-xxxxx

MINIMAX
Type 950 cm
Congratulations on your new drum. For safety reasons and for optimal use from your machine,
you should read through the user manual thoroughly before you take it into use.
©Copyright 2002. All rights reserved DALBO A/S
Your drum has:
Type no.:
Series no.:
Month of manufacture:
Tare weight in kg:
When enquiring about spare parts or servicing, we kindly ask that you always provide the type
number and serial number. At the back you will find a list of spare parts, which helps give an
overview of the individual parts.
EU DECLARATION OF CONFORMITY
DALBO A/S
DK-7183 Randbøl
hereby declares that the aforementioned machine is manufactured in accordance with the stipu-
lations in Directive 2006/42/EC, which replaces the Directive 98/37/EC and the amending Direc-
tives 91/368/EEC, 93/44/EEC and 93/68/EEC on a mutual approach for member state legislation
on machinery for health and safety requirements in connection with the construction and manu-
facture of machinery.
This machine complies with the safety requirements of the European safety guidelines.
DALBO A/S
Date:
Carsten Jensen, CEO
CE

Table of Contents
INTRODUCTION AND IDENTIFICATION OF SERIAL NUMBER........................................................... 6
INFORMATION .................................................................................................................................... 6
LOCATION OF USER MANUAL ................................................................................................................. 6
LOCATION OF SERIAL NUMBER ............................................................................................................... 7
WARRANTY PROVISION ........................................................................................................................ 7
SAFETY ............................................................................................................................................... 8
GENERAL........................................................................................................................................... 8
NOISE LEVEL..................................................................................................................................... 10
HYDRAULICS .................................................................................................................................... 10
MOUNTING ..................................................................................................................................... 11
MAINTENANCE AND REPAIR ................................................................................................................ 11
DRIVING ON ROADS ........................................................................................................................... 12
CORRECT USE ................................................................................................................................... 12
TECHNICAL DATA............................................................................................................................. 13
HOW TO READ THE INSTRUCTION MANUAL ................................................................................. 14
DELIVERY......................................................................................................................................... 14
USE................................................................................................................................................... 15
FIRST USE OR RESTART AFTER A LONG BREAK........................................................................................... 15
CONNECTING AND DISCONNECTING.............................................................................................. 16
CONNECTING ................................................................................................................................... 16
HYDRAULICS .................................................................................................................................... 16
DISCONNECTING ............................................................................................................................... 16
SETTINGS ......................................................................................................................................... 17
TENSILE ADJUSTMENT ........................................................................................................................ 17
ADJUSTMENT OF CENTRAL SECTION...................................................................................................... 18
ADJUSTMENTS OF STOP FOR FOLDING.................................................................................................... 18
DRIVING AND OPERATING.............................................................................................................. 19
UNFOLDING AND FOLDING .................................................................................................................. 19
Unfolding ................................................................................................................................. 19
Folding ..................................................................................................................................... 20
ADJUSTMENTS OF HYDRAULIC WEIGHT TRANSFER .................................................................................... 21
Too much pressure................................................................................................................... 21
Too little pressure .................................................................................................................... 21
DRIVING SPEED................................................................................................................................. 22
TROUBLESHOOTING........................................................................................................................ 23
ADDITIONAL EQUIPMENT............................................................................................................... 24
CRACKERBOARD................................................................................................................................ 24
Power ....................................................................................................................................... 24

MINIMAX
Page 5
Hose markings ..........................................................................................................................25
Adjustment of the teeth's angle and depth..............................................................................25
Driving and operating...............................................................................................................25
Retrofitting ...............................................................................................................................26
MAINTENANCE.................................................................................................................................28
LUBRICATION ....................................................................................................................................28
ADJUSTMENTS ..................................................................................................................................29
Adjustment of fittings...............................................................................................................29
Wheels ......................................................................................................................................29
Worn out parts .........................................................................................................................30
HYDRAULICS .....................................................................................................................................30
REPLACEMENT AND REPAIRS..........................................................................................................31
HYDRAULICS .....................................................................................................................................31
Changing out the cylinders for unfolding and folding the side sections ..................................31
Changing the tilt cylinder .........................................................................................................34
Change the gaskets on the tilt cylinder ....................................................................................35
Additional Equipment - Changing the cylinder to crackerboard ..............................................36
Replacement of the gaskets for depth adjustment ..................................................................36
UNINSTALLING/INSTALLING OF WHEELS..................................................................................................38
Replacing the bearings .............................................................................................................38
DISMANTLING THE DRUM BODY ............................................................................................................39
Replacement of the drum body on the side sections................................................................39
Replacement of the centre drum body.....................................................................................39
DISPOSAL..........................................................................................................................................41
HYDRAULICS DIAGRAM ...................................................................................................................42
Ground machine .......................................................................................................................42
Additional Equipment - Crackerboard ......................................................................................43
SPARE PARTS....................................................................................................................................44

MINIMAX
Page 6
Introduction and identification of serial number
Information
•This user manual is intended for the person who uses and main-
tains the drum. It contains all items concerning safety, use and
maintenance. It is very important that all users read and understand
the user guide before starting to use the drum.
•Every time there is a new user of the drum, it is very important
that the person in question is instructed on the correct use of the
drum. This includes a review and a read-through of the user guide
and commissioning in the field.
•If there are doubts regarding reading the user guide or concerning
the general use and safety of the drum, it is very important to stop
its use and contact the DALBO A/S.
Location of user manual
Fig. 1
The user manual can be found
in a plastic case on the ma-
chine’s side frame. Remove
the plastic case before starting
the drum and stow the user
manual in a safe and accessi-
ble place for all users of the
drum.
MINIMAX 630

MINIMAX
Page 7
Location of serial number
Fig. 2
The data plate on the 450-830
is located centrally on the ma-
chine’s draw-bar. The data
plate can either be placed as
self-adhesive foil (A), or as
metal (B). The serial number of
your machine can also be
found on page 2 in the user
guide.
Every single machine is equipped with an identification plate. Below is shown
a typical identification plate, which containing the following data:
A: Name, company name and address of the manufacturer.
B: Machine model.
C: Machine type.
D: Machine serial number.
E: Year of manufacture.
F: CE imprinting.
Warranty provision
By default, your MINIMAX is delivered with a 2-year warranty from the date
of delivery. DALBO A/S shall bear no liability for damage caused by the im-
proper use of the drum.
B
A
A
B
C
D
E
F

MINIMAX
Page 8
Safety
You will see this symbol in the instruction manual each time advice is given
about your safety, the safety of other users, or the functional safety of the
machine. All safety instructions must be observed and made available to all
users of the machine.
General
•Before starting its operation, the user must be familiar with all parts of
the machine.
•Safety labels have been placed on the machine. These contain important
instructions about your own safety and that of others, as well as the cor-
rect use of the machine. Always make sure, that these stickers are intact.
Fig. 3
Attach straps here if you are lifting
the drum using a crane or truck.
•Some safety stickers are on the machine. Pictures below show were
these are mounted and a description of each.
Safety sticker:
Remember to read instruction
manual.
Safety sticker:
Machine opening.

MINIMAX
Page 9
•Clean security labels daily.
•Replace security labels if they are damaged.
•If the part with a safety label needs to be replaced, install a new
label. Remove the white foil sticker from the label and stick the
label onto the new part.
•You can order a new safety label from the DALBO A/S
•There should be no passerby around the machine during work or trans-
portation.
•When operating the drum, ensure that there are no people within the
machine’s operating radius. The machine may only be operated from in-
side the tractor.
•When the drum is folded up, be sure the side sections are engaged.
Likewise, this will secure the control levers against accidental operation.
•Before leaving the tractor, performing any adjustments, maintenance or
repairs to the drum, unfold the machine and lower it to the ground or,
secure it in transport mode, apply the brakes on the tractor, turn off the
engine and remove the ignition key so that the machine is secured
against accidental starting.
•Remember to secure the supporting legs as well as the lifting arm with
lynch pins.
•Never leave the driver’s seat while the machine is being driven.
•The driving speed must always be adjusted to the conditions.
•Only use the machine if all safety devices have been mounted. Defective
safety devices must be replaced immediately.
•The machine is not indicated for being used in other sectors apart from
the agricultural one.
•The handbook must be always at reach in order to be able to consult it if
needed. Should it be lost or damaged, it is necessary to request the sub-
stitutive copy to DALBO.
•Do not use the machine if tired, ill, or under the effect of alcohol, medi-
cine or drugs.

MINIMAX
Page 10
•This machine is usually used during the day, but should it be, exceptional-
ly, necessary to use the machine at night or in conditions of reduced visi-
bility the lighting system supplied with the tractor must be used.
•Verify the machine carefully before starting it up.
•The staff must use the emergency equipment and the personal protec-
tive devices while operating and carrying out maintenance on the ma-
chine.
•We recommend the operator assigned to the machine not to wear cloth-
ing that could be caught by the machine.
•During the use, the machine could emit dust. It is advised to verify the fil-
ters on the cabin ventilation system periodically or use suitable protec-
tion systems for the respiratory tracts such as anti-dust mask.
•During use the operator must have sufficient visibility on working areas
considered as dangerous, therefore it is opportune to keep the mirrors
supplied on the tractor clean and in a perfect state.
•Keep the machine clean from foreign material (detritus, tools, various ob-
jects), that could damage functioning or cause damages to the operator.
•Avoid operating on muddy or loose soil.
•Any alteration on the machine could cause safety problems. Should this
occur the user will be held the only person liable for any accident.
Noise level
•Except of the interaction of the machine with external factors, no other
noises from this machine exceed 80 db(A).
Hydraulics
•Prior to any repair work on the hydraulics unit, the machine’s undercar-
riage must be lowered, the pressure must be removed from the unit, the
engine must be switched off and the ignition key must be removed.
•Hydraulic connections must be cleaned thoroughly before connecting.
When connecting the hydraulic hoses to the tractor’s hydraulics, ensure
that pressure is removed from the hydraulics and that all hoses are fixed
so that there is no danger of them being damaged during transport, driv-
ing and operation.

MINIMAX
Page 11
•For hydraulic systems with built-in pilot-controlled non-return valves, it
can be difficult to completely remove the pressure. You should hold a
cloth around the fitting/part that is being removed to catch any oil that
may leak.
•After repairs on the hydraulic system have been completed, all air must
be completely removed from the system.
•Check the hydraulic hoses regularly for defects such as tears, cracks,
wear or damage. Defective hoses must be replaced immediately.
•Avoid spilling oil on the ground. If this should happen, it should be col-
lected and safely disposed of immediately.
•Clean hands thoroughly after skin contact with oil and grease. Change
out of oil-soaked clothing immediately, as this can be harmful to the skin.
•Hydraulic oil that flies out under high pressure can penetrate through the
skin and cause serious injuries. Seek professional medical assistance im-
mediately in the event of any injury.
•Do not use the controls or flexible tubes as handles. These components
are mobile and do not offer a stable support.
Mounting
•There is a risk of crushing when carrying out mounting. People must not
stand between the machinery and the tractor or between parts being
connected.
•Pay the maximum attention during the equipment coupling and uncou-
pling phases.
Maintenance and repair
•The machine must be properly supported while undertaking all repair
and maintenance work; the tractor and machine must have their brakes
properly activated, the engine must have been turned off and the igni-
tion key removed.
•Tighten all screw fittings after a few hours of use. All screw fittings must
be checked at regular intervals and tightened when necessary. Check cot-
ter pins and bolts to avoid breakdowns.
•Oil, grease and filters must be disposed of and in accordance with the
applicable environmental legislation.

MINIMAX
Page 12
Driving on roads
•When driving on public roads, all safety arrangements and warnings re-
quired by law must be installed and tested. The driver is responsible for
the correct use of lights, brake systems and traffic signs in accordance
with traffic laws.
•With regard to the dimensions of the machinery, the driver must make
enquiries with the traffic authorities to ensure that it may be transported
on public roads.
•When transporting the machine, care must be taken not to exceed the
total weight and axle load of the tractor and that the load on the front
axle is no less than 20 per cent of the tractor’s overall weight. In that
case, use the front weight of the tractor.
•Before starting to drive on public road from a non-paved or dirty surface,
it is required to clean the wheels of the tractor and machine from any
presence of mud.
•When driving on a public road, the roller must be in transport position.
•Road transport must be done with a maximum speed of 25 km/h.
Correct use
•Correct use of the machine also includes compliance with the manufac-
turer’s operating, maintenance and repair instructions, as well as the ex-
clusive use of original spare parts.
•The drum may only be used, maintained and repaired by people who are
familiar with the machine and who are aware of the dangers that can
arise. We remind to refer to the manufacturer in case of doubts on the
use of the machine and on the interpretation of this handbook.
•The manufacturer is not liable for damage resulting from changes to the
machine carried out without the manufacturer’s prior permission. Fur-
thermore, the manufacturer is not liable for any damage that results
from incorrect use. Responsibility for this rests solely with the user.
•No extra weight may be mounted on the drum.

MINIMAX
Page 13
Technical data
MINIMAX 950
Size [cm]
950
HP (recommended)
160-220
Gross Weight [kg]:
•Cambridge 50
5215
•Cambridge 55
6090
•Crosskill 53
4580
•Cross Combi 50
5340
•Cross Combi 55
6410
Sections (pieces)
3
Hydraulic require-
ments:
1 DV + 1 EV1
X
Additional Equipment
[kg]
Crackerboard
745
Air brakes
180
1
DV = dual action, EV = single action

MINIMAX
Page 14
How to read the instruction manual
It is possible that the order in which the topics are listed does not appear as
logical. Please refer to the table of contents, where the titles for the relevant
topics can be found.
The main points in the instruction manual are divided into 5 key sections:
•Safety
•Getting Started and Driving
•Additional Equipment
•Maintenance
•Repairs
The following symbols are used in the instruction manual for:

Points that are especially important for the functionality as well as the
lifetime of the machine.
Points that are relevant to safety.
Delivery
The drum is delivered fully assembled via platform truck.
If the drum needs to be lifted, it is recommended that it is rigged with straps
in the middle-section and pulled, so that the machine is balanced.
Incorrect rigging and lifting can cause serious damage to the machine
and to persons around it.

DALBO does not accept liability for damage in connection with inappro-
priate or incorrect rigging and lifting.

MINIMAX
Page 15
Use
This is a standard roller, designed for rolling and levelling ploughed and sown
areas. Rolling is intended on farming areas where better soil compaction is
needed and to avoid the soil to dry out by extreme dry conditions.
Rollers equipped with crackerboard is able to level ploughed areas with a
perfect result.
Fig. 2
The drum is a three-piece
drum with integrated hydrau-
lic weight transfer, where the
sections move independently
of each other.
MINIMAX 950
As a drum, MINIMAX 950 is used before sowing to crush tubers as well as af-
ter sowing to improve sprouting and push down stones.
The MINIMAX 950 can be optionally fitted with hydraulic crackerboards. The
main application of the crackerboard is in preparing the soil for sowing. The
vibrating effect of the teeth decomposes tubers and performs a processing
and alignment of the raw ploughed soil, as well as the previously prepared
ground. If you do not wish to use the crackerboard, tilt it up and the machine
can then be used exclusively as a drum.
First use or restart after a long break
•Verify that the machine has no damaging.
•Verify the mechanical units that must be in good state and not rust-
ed.
•Verify the correct functioning of the light bars (if present).
•Grease carefully all mobile parts.
•Verify that no oil are leakages from connections and pipes.

MINIMAX
Page 16
Connecting and disconnecting
Connecting
Fig. 3
The drum is connected to the
tractor's fixed drawbar, where
the towing eye (A) must be
between the drawbar's forks.
The lever is inserted, the sup-
port leg raised and placed in
the working position (B)

•Remember to secure the lever with linchpins or similar.
•Remember to secure the supporting legs with linchpins or similar

•The lift arms are adjusted so that they do not collide with the bar
when turning.
Hydraulics
As standard, the drum requires a double-acting and single-acting hydraulic outlet,
in which the double-acting output extends and the single-acting raises/lowers (tilts)
the drum. If a crackerboard is fitted, a double-acting outlet is required.
Table 1. Hose markings
Cylinder name
Colour
Outlet
Function
Tilt cylinders
White
Single-acting
Lift the drum up on the wheels and down
into working mode.
Folding/
weight transfer
Red
Double-acting
Fold the side sections together/out to
transfer the weight from the mid-section to
the side sections

•Make sure the hydraulic hoses have not been crushed.
•Float position is required for the folding/weight transfer
Disconnecting
The drum must be folded (in transport position) or unfolded before disconnection.
The support leg is unscrewed so that the drum's bar can be lifted from the tractor's
drawbar, the hydraulic hoses are removed and the nail is removed.
Remember to release the pressure from the connecting hoses to the hy-
draulic system before disconnecting the hoses.
A
B

MINIMAX
Page 17
Settings
The drum is factory set at delivery, but fine tuning will always be necessary
before use. Many different adjustment options make your drums more ver-
satile and allow the potential to gain optimal use of the machine.
In order to achieve uniform pressure on the ground, the bar must be adjust-
ed correctly for the tractor concerned. The tractor's tensile height must be
approx. 50cm and max 60cm by 950cm
Tensile adjustment
Fig. 4
In order to achieve uniform pres-
sure on the ground, the bar must
be adjusted correctly for the trac-
tor concerned.
(measured where the arrow is
indicated on the image (flange
plate) as the front part of the pull
is reversible)
Height under drawbar:
Approx. 50cm by 950cm
Fig. 5
It is important that the machine's
central section (A) is horizontal
during work. In order to achieve
uniform pressure on the ground

It is important for a correct setting for the machine to be on a horizontal
surface when set
A

MINIMAX
Page 18
Adjustment of Central Section
Fig. 6
With the MINIMAX unfolded (see
“Driving and operating”) check if
the bolts (A) have approx. 10 mm
air to the pipe (B).
The central section must be hori-
zontal to achieve the best result in
the field. In addition, the 3 square
tubes must be in line (same height
from the ground)
If the bolts (A, Fig. 5) go against the pipe and the centre frame is not horizontal, the
bolts must be adjusted. Likewise, the bolts should be adjusted if there is too large a
space between the frame and the bolt head.
Fig. 7
1. Loosen the lock nut (A).
2. Adjust the bolt (B) up/down.
3. Tighten the lock nut (A).
4. Check if the frame is horizon-
tal and if the height of the bar
fits.
5. If the bolts (B) do not move
against the bar, drive the trac-
tor slightly forward and check
the setting.
Adjustments of stop for folding
Fig. 8
To ensure the correct position of
the side sections during transport,
it is possible to adjust the rear
stop (A) for the side sections
A
B
A
B
A

MINIMAX
Page 19
Driving and operating
Proper operation is important in order to get optimal performance from your
drum. This applies not only to working in the field but also in terms of safety.
It is therefore crucial that you have thoroughly read the safety precautions
that cover the machine.
Unfolding and folding
Unfolding and folding are conducted with the tractor in park.
Unfolding
Fig. 9
1The side section is lifted up by
the carriers (A) with the tilt
cylinder (marked: White).
Fig. 10
2The cylinders for unfolding
and folding (marked: Red) are
activated and the side sections
are completely folded.
3The tilt cylinders are activated
and the drum is lowered to
the ground.
4The cylinders for unfolding
and folding (marked: Red) are
set in the float position.

Before the drum is started, the weight transfer must be adjusted correctly (see “Hy-
draulic Weight Transmission Adjustment”).
A

MINIMAX
Page 20
Folding
Fig. 11
1. The unfolded and folded cylin-
ders (marked: Red) are acti-
vated, so that the outside of
the side sections (A) are lifted
as much as possible.
Fig. 12
2. The tilt cylinders (marked:
White) are activated to full
length and the drum is tilted
free of the ground
Fig. 13
3. The unfolded and folded cylin-
ders are activated again and
the side sections are folded in.
4. The tilt cylinders are activated
and the drum is lowered onto
the transport hooks.
A