DALBO MINIMAX 450 User manual

MINIMAX
User instructions
Date of publication: 01/2021
Date printed: 01/2021
Language: EN
Type: MINIMAX 450-830
Product no.: MINIMAX 450-830
Serial no.: 50949-xxxxx

- 2 -

MINIMAX
Type 450,630, 760, 830 cm
Congratulations on the purchase of your new roller. For safety reasons and to achieve
optimum service from the product, please read the User Guide before use.
©Copyright 2002. All rights reserved, DALBO A/S
This product has:
Type no.:
Serial no.:
Month of manufacture:
Net weight kg:
If contacting the manufacturer regarding spare parts or service, please state type and
serial number. A spare parts list is included at the back of this manual.
EU DECLARATION OF COMPLIANCE
DALBO A/S
DK-7183 Randbøl
declares herewith that the above machine is manufactured in accordance with the pro-
visions of directive 2006/42/EC, which replaced directive 98/373/EC and change direc-
tives 91/368/ECC, 93/44/ECC and 93/68/ECC on harmonisation of member state legis-
lation concerning health and safety requirements related to the construction and man-
ufacture of machines.
This machine corresponds to the safety requirements in the European Safety Guide-
lines.
DALBO A/S
Date:
Carsten Jensen, CEO
CE
3

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
DRAWBAR......................................................................................................................17
SETTINGS........................................................................................................................18
TENSILE ADJUSTMENT.......................................................................................................18
DRIVING AND OPERATION............................................................................................20
UNFOLDING AND FOLDING ................................................................................................20
Unfolding................................................................................................................20
Folding....................................................................................................................21
DRIVING SPEED ...............................................................................................................22
TROUBLESHOOTING ......................................................................................................23
EXTRA EQUIPMENT .......................................................................................................24
CRACKER BOARDS............................................................................................................24
Power .....................................................................................................................24
Hose labels .............................................................................................................25
Adjustment of the teeth’s angle and depth ...........................................................25

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Driving and operation ............................................................................................25
Retro-fitting............................................................................................................26
CONNECTION WITH TOWING EYE ........................................................................................28
MAINTENANCE ..............................................................................................................29
LUBRICATION..................................................................................................................29
ADJUSTMENT..................................................................................................................30
Adjustment of fittings ............................................................................................30
Wheels....................................................................................................................30
Tyre pressure ..........................................................................................................31
Worn out parts .......................................................................................................32
HYDRAULICS...................................................................................................................32
REPLACEMENTS AND REPAIRS......................................................................................33
HYDRAULICS...................................................................................................................33
Changing the cylinders for unfolding and folding the side sections ......................33
Changing the tilt cylinder .......................................................................................36
Change of gasket set on the tilt cylinder................................................................37
Additional Equipment - Changing the cylinder to the cracker board.....................38
Replacement of the gasket set for depth adjustment............................................38
REMOVING/MOUNTING WHEELS ON THE ROAD .....................................................................40
REMOVING/MOUNTING WHEELS ON THE GROUND .................................................................40
Replacing the bearings...........................................................................................41
DISMANTLING THE DRUM BODY..........................................................................................42
Replacement of the drum body on the side sections .............................................42
Replacement of the centre drum body...................................................................43
DISPOSAL .......................................................................................................................44
HYDRAULIC DIAGRAM:..................................................................................................45
SPARE PARTS .................................................................................................................48

Page 6
Introduction and identification of serial number
Information
This user manual is intended for the person who uses and maintains
the drum. It contains all items concerning safety, use and mainte-
nance. 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 man-
ual in a safe and accessible
place for all users of the drum.
MINIMAX 630

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

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.

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 transpor-
tation.
When operating the drum, ensure that there are no people within the ma-
chine’s operating radius. The machine may only be operated from inside
the tractor.
When the drum is folded up, be sure the side sections are engaged. Like-
wise, 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, medicine
or drugs.

Page 10
This machine is usually used during the day, but should it be, exceptionally,
necessary to use the machine at night or in conditions of reduced visibility
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 protective
devices while operating and carrying out maintenance on the machine.
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 protection
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, driving
and operation.

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 con-
nected.
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 ignition
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 ap-
plicable environmental legislation.

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 to-
tal 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 pres-
ence 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. Further-
more, the manufacturer is not liable for any damage that results from in-
correct use. Responsibility for this rests solely with the user.
No extra weight may be mounted on the drum.

Page 13
Technical data
MINIMAX
Table 1. Technical data
Size [cm]
450
530
630
760
830
HP (maximum)
120
130
150
180
200
Gross Weight [kg]:
Cambridge 50
2190
2800
3145
4070
4160
Cambridge 55
2610
3290
3720
4760
4930
Cambridge 60
-
-
4515
-
5875
Crosskill 53
1860
2325
2660
3545
3650
Cross Combi 50
2230
2740
3215
4160
4310
Cross Combi 55
-
-
3740
4940
5095
Sections (pcs)
3
3
3
3
3
Hydraulic require-
ments:
1 DV + 1 EV1
X
X
X
X
X
1 DV for cracker boards
X
X
X
X
X
Gross weight of extra
equipment [kg]
Cracker boards
490
530
550
600
630
Air brakes
-
180
180
180
180
Hydraulic brakes
-
150
150
150
150
Axle load [kg]
0.73 x
gross
weight
0.72 x
gross
weight
0.72 x
gross
weight
0.71 x
gross
weight
0.71 x
gross
weight
Support load [kg]
0.27 x
gross
weight
0.28 x
gross
weight
0.28 x
gross
weight
0.29 x
gross
weight
0.29 x
gross
weight
1
DV = dual action, EV = single action

Page 14
How to read the instruction manual
It is possible that the order in which the topics are listed does not follow a
specific logic. 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
Extra 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 a platform truck.
If the drum needs to be lifted, it is recommended that it is rigged with straps
in the middle-section and secured with a drawbar, so that the machine is bal-
anced. (See page 9, section on “General Security”)
Incorrect rigging and lifting can cause serious damage to the machine and
to persons around it.

DALBO A/S does not accept liability for damage in connection with inap-
propriate or incorrect rigging and lifting.

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 per-
fect result.
Fig. 4
The drum is a three-piece drum
with integrated mechanic
weight transfer, where the sec-
tions move independently of
each other.
MINIMAX 630
As a drum, MINIMAX is used before sowing to crush tubers as well as after
sowing to improve sprouting and push down stones.
Optionally, MINIMAX can be fitted with hydraulic cracker boards. The main
application of the cracker board is to prepare the soil for sowing. The vibrating
effect of the teeth decomposes tubers, processes and aligns the raw ploughed
soil, as well as the previously prepared ground. If you do not wish to use the
cracker board, tilt it upward 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 rusted.
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.

Page 16
Connecting and disconnecting
Connecting
Fig. 5
The drum is connected to the
tractor’s fixed drawbar, where
the towing eye (A) must be be-
tween 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 lynch pins or similar.
Remember to secure the supporting legs with a lynch pin or similar.

The lift arms are adjusted so that they do not collide with the draw-
bar when turning.
Hydraulic hoses and a lamp cord are fitted so that they are not dam-
aged during operation.
Hydraulics
As a standard, the drum requires a double-acting and single-acting hydraulic outlet,
in which the double-acting output extends and the single-acting output raises/low-
ers (tilts) the drum. If a cracker board is fitted, a double-acting outlet is required.
Table 2. Hose labels
Cylinder name
Colour
Outlet
Function
Tilt cylinders
White
Single-acting
Lift the drum up on the wheels and down-
ward into working mode.
Folding
Red
Double-acting
Folds the side-sections together/out.

Check that the hydraulic hoses have not been crushed.
The floating position is recommended for the socket for the tilt cylin-
der/fold-in when transporting by road and working in the field.
Disconnecting
The drum must be folded (in transport position) or unfolded before disconnection.
Screw out the support leg so that the drum’s bar can be lifted from the tractor’s
drawbar, disconnect the hydraulic hoses and remove the nail.
Remember to release the pressure from the connecting hoses to the hy-
draulic system before disconnecting the hoses.
A
B

Page 17
Drawbar
Some countries require a special turn able drawbar like shown on the picture
below. Setup on this drawbar type must be done exactly the same way than
described in section “Setting up” on page 18.

Page 18
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 versa-
tile and enable optimal use of the machine.
In order to achieve uniform pressure on the ground, the draw-bar must be
adjusted correctly for the tractor concerned. Draw-bar height under the
drum’s red draw-bar towards the tractor should be shown in the table below
(approx. measurement).
Tensile adjustment
Fig. 6
In order to achieve uniform
pressure on the ground, the
bar must be adjusted cor-
rectly for the tractor con-
cerned.
Measured where the arrow
is indicated in the picture.
Height under drawbar:
See table below
Table 3. Drawbar height
Ring\Type
450
530
630
760
830
50 cm cambridge
50 cm
58 cm
58 cm
57 cm
57 cm
55 cm cambridge
53 cm
61 cm
61 cm
60 cm
60 cm
60 cm cambridge
-
63 cm
63 cm
62 cm
62 cm
53 cm crosskill
49 cm
57 cm
57 cm
56 cm
56 cm
50 cm cross combi
48 cm
56 cm
56 cm
55 cm
55 cm
55 cm cross combi
-
58 cm
58 cm
57 cm
57 cm
Fig. 7
It is important that the middle sec-
tion (A) of the machine is horizon-
tal during operation in order to
achieve uniform pressure against
the earth.
A

Page 19

To ensure correct settings, it is important that the machine is on a horizontal
surface when the setting is set.

Page 20
Driving and operation
Proper operation is important in order to get optimal performance from your
drum. This applies to both work in the field and in terms of safety. It is there-
fore 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 parked position
Unfolding
Fig. 8
1The side section is lifted up by
the carriers (A) with the tilt
cylinder (marked: White).
Fig. 9
2The cylinders for unfolding and
folding (marked: Red) are acti-
vated 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) and the
tilt cylinder (marked: White)
are set in the float position.
A