Ovlac MINI-BF Guide

INSTRUCTIONS MANUAL AND SPARE PARTS
MINI-BF/HF REV 2021

CONGRATULATIONS!
You have just acquired Ovlac machinery!
As the country's largest producer of agricultural machinery for soil tillage, we are
honoured that you have chosen Ovlac as your trusted choice.
After many years of experience in the field, we make sure that you will be proud of your
purchase in the same way that we are proud of the product we have created under the
strictest quality standards.
For the correct use and enjoyment of this equipment, we strongly recommend that the
customer read the instructions contained in this manual and use it as a reference for
any questions that may arise regarding the operation of your Ovlac equipment.
Sincerely yours, Jorge Calvo
CEO of Ovlac
1

CONSIDERATIONS
This instruction manual describes the operating and maintenance
Instructions and spare parts for the indicated equipment.
This agricultural equipment, called XPERIENCE, is designed for tilling
the soil, applied to a Tractor with lifting gear and universal
threepoint linkage.
The proper functioning of the machine depends on its correct use. It
is therefore advisable to read the instructions given in this manual
carefully in order to avoid any inconvenience that could impair the
proper functioning and durability of the machine.
It is also important to follow the instructions in the manual, as the
manufacturer declines all responsibility for negligence and
non observance of these instructions.
The manufacturer is at your disposal to guarantee immediate and
accurate technical assistance and to provide all that may be
necessary for a better functioning and performance of the machine.
The manufacturer reserves the right to modify the machine without
the need to urgently update this publication.
INDEX
1.- Security Rules
2.- Description and technical data
3.- Non-Stop Security Systems
4.- Turn up
4.1.- Adaptation to the tractor
4.2.- Working bodies
4.3.- Alignment
4.4.- 1st body working width
4.5.- Other adjustments
5.- Working depth
6.- Transport and parking
7.- Maintenance
8.- Optional equipment
9.- Spare parts
2
3
6
8
9
9
9
10
10
11
12
13
14
15
16

1.- Security Rules
Read carefully all the instructions for use of the plough.
The manufacturer declines all responsibility for any inconvenience caused by NOT observing
the Safety and Accident Prevention Regulations described below.
1.- Pay attention to the danger and warning symbols shown in this manual and indicated on the
equipment.
2.- Repairs and adjustments to the equipment must always be carried out with the engine
stopped and the tractor locked.
3.- EIt is strictly forbidden to transport people or animals on the equipment.
4.- It is strictly forbidden to entrust the driving of the tractor, with the equipment hooked up, to
people without a driving license, inexperienced, or who are not in good condition.
5.- Scrupulously observe all the accident prevention measures recommended and described in
this manual.
6.- The application of additional equipment to the tractor implies a different weight distribution
on the tractor axles.
7.- Before putting the tractor and the equipment into operation, check that all the safety
elements for transport and use are in perfect condition.
8.- The symbols with warnings displayed on the equipment give the appropriate suggestions for
the use of the same.
9.- To circulate on the road, it is necessary to observe the rules of circulation according to the
country where it’s operated.
10.- Respect the maximum weight foreseen on the tractor, the total mobile weight, the transport
regulations and the road code.
11.- Before starting to work, familiarise yourself with the control devices.
12.- Pay the utmost attention to hitching and unhitching the equipment.
13.- Never leave the driving position when the tractor is in motion.
14.- Remember that road adherence, steering and braking capacity may vary significantly due to
the presence of suspended equipment.
15.- It is strictly forbidden to remain in the area of action of the equipment.
16.- Before leaving the tractor, lower the suspended equipment, stop the engine, apply the
parking brake, and remove the ignition key from the dashboard.
17.- The category of the hitch pins of the equipment must correspond to that of the linkage of
the lift.
18.- Pay maximum attention when working in the area of the arms of the tractor, it is a very
dangerous area.
19.- It is strictly forbidden to stand between the tractor and the equipment to manoeuvre the
external lifting control.
20.- During road transport with the equipment suspended, put the control lever of the hydraulic
lift in the locking position.
21.- The spare parts must correspond to the requirements defined by the manufacturer. Always
use original spare parts.
22.- The safety instruction decals must always be clearly visible. Clean and replace them if they
are not legible (You can ask your dealer for them).
23.- The instruction manual must be kept for the whole life of the equipment.
3

(Fig.1) WARNING
Before starting to work, read the instructions in the
manual.
DANGER
Do not handle the equipment when it is suspended, danger
of crushing. Maintain the safety distance.
DANGER
Lifting the equipment can cause injuries due to reaching.
Maintain the safety distance.
To be ready in case of an emergency
Keep a first aid kit and fire extinguisher on hand. Write
down the telephone numbers of doctors, ambulance and
fire brigade and keep them near the phone.
Use adequate clothes
Avoid loose clothing and use appropriate safety equipment
depending on the type of work. Safe operation of the
machine requires the full attention of the operator.
Don’t use headphones for listening to the radio while
working with the machine.
4

SPECIFIC INSTRUCTIONS FOR
WELDING REPAIRS
When repair by welding is authorised by the manufacturer, the
following points shall be taken into account generally.
In particular cases, appropriate welding instructions shall be
provided for each application.
1 Repair welding should be carried out by qualified welders and
in accordance with good technical and safety code practice.
2 Before welding repairs, remove paint, rust, dirt or any other
substances harmful to the weld.
3 To avoid damage to mechanical or hydraulic components such
as bearings, shafts, hydraulic actuators, hydraulic systems, etc.,
care should be taken to place the earth connection in an area of
good contact, free of paint and rust.
On machines with hydraulic cylinders, we must ensure that the
welding current does not flow through such elements. For this
purpose, the earth connection shall be placed on the same part
of the machine to be repaired.
4 Our machines are made of high elastic limit (HEL) steels, which
means that special attention must be paid to welding processes
and filler materials. In general, basic coated electrodes E7016 or
E7018 will be used. For the MAG (semi-automatic) welding
process, ER70S6 wire and Ar+20C02 will be used as shielding gas.
In both cases, follow the recommendations for drying times and
temperatures recommended by the manufacturers of the filler
material.
5 When the parts to be welded are thicker than 15 mm, or the
ambient temperature is lower than 15 C, preheating by flame
between 75-100 C is recommended.
6 It is strictly forbidden to cool welding seams with water, air or
any other substance.
In case of questions during repair, please contact the
manufacturer via the usual means of communication.
5

2.- Description and Technical Data
1. HEADSTOCK
2. IDENTIFICATION PLATE*
3. TURNING CYLINDER
4. OSCILLATING SHAFT
5. WORKING BODIES
7. SHARE POINT
8. SHARE
9. HYDRAULIC SYSTEM**
10. REAR WHEEL
11. FRAME
12. ANCHOR
Note: the number of the plough’s manufacture, engraved on the
nameplate, must match the number engraved on the
headstock’s support.
*2. Identification plate
**9: Also available in Leafspring Non-Stop
Security System.
1
11
5
4
7
8
6
9
6
10 3
7

7
Technical Data
MODELS MINI F 6 / 6+1 / 6+2 MINI F 8 / 8+1 / 8+2 MINI F 10 / 10+1 / 10+2
Working Width 1,95 / 2,28 / 2,60 2,60 / 2,93 / 3,25 3,25 / 3,58 / 3,90
Recommended Power (HP)85 a 140 120 a 180 150 a 220
Interbody distance 61 cm
Underbeam clearance 72 cm
Weight (kg) no options 900 / 980 / 1075 1216 / 1350 / 1432 1600 / 1734 / 1816
Standard wheel 1 ó 2 ruedas 6.00 x 9” 10 PR
Frame 110 x 110 mm 110 x 110 mm 100 x 150 mm

3.- Non Stop Security Systems
NF Models:Security guaranteed through shearbolts. When the
point meets an obstacle it breaks in order to allow the tine to
turn over its placing. In order to continue the labor you must
rearrange the tine again and change the shearbolt F(fig.3)
NOTE: Ovlac shearbolts are calculated to break at a certain
pressure. It is important to use original shearbolts. The use of
other kind of bolts fully cancels any warranty the machine
may had.
Fig. 3
NH Models: “Non-Stop” Hydraulic Security System works automatically. When the
point meets an obstacle, the system gives up, allowing the tine to lift up and save
the obstacle, getting back its original position without stoping the tractor. (Fig. 1)
In the HYDRAULIC models, in order to adapt the plough to the conditions of the
terrain, you may regulate the trigger pressure by injecting (hard terrains) or
retiring (soft terrains) oil from the circuit and modifying the pressure in the whole
system.
This operation is done from the tractor’s cabin through the pressure gauge M,
supplied for such purpose, after opening the key L (Fig. 3).
The key L closes in parallel position to the tube, opposite to the normal, in order to
avoid any object at the terrain impacts against it while laboring, causing an
opening on the circuit.
Important: always works with a pressure in between 100 and 135 bars.
NOTE: OVLAC Non-Stop security systems are regulated in factory with an optimum
pressure for mid hardness terrains.
Fig. 4
8
Fig. 2
Fig. 5
Fig. 6
L
M
F

4.- Turn Up
4.1 - Adaptation to the tractor
OVLAC’s machinery are designed to adapt to the 3 universal points of any
tractor.
The oscilating shaft, o barra de enganche, is supplied in two versions
(distanc between centers):
CategoryII 890 mm.
CategoryIII 1025 mm.
The oscilating shaft must have the right length in order to converge the
trigger pressures in the center of the front axis, such as it is shown in
the Fig. 7.
9
Fig. 7
4.2 - Working bodies
Eliminate the painting layer of protection from the bodies
before starting the labor so the earth doesn’t stick to the
bodies.

4.2 - Vertederas
Fig. 11
10
Fig. 10
T
B
E
C
E
4.3 - Alignment
The plough must be aligned with the tractor, if not it will tend to drift appart from the
path. Check that the distance between A1= A2 (Fig. 7. Pag. 11).
At Ovlac’ ploughs the slack is automatically corrected thanks to the oscilating shaft.
The third point’s tine must be coupled in order that the end linked over the machine
remains slightly higher than the end linked to the tractor. (Fig. 6). The third point must
be coupled always to the torn drill E, trying that its length allows its free movement
while on labor.
4.4 - 1st body working width
The Mini-N is a plough that works out of the path so it’s only necessary to regulate the
adjustment of the 1st body according to the tractor’s width in a way that the distance
from the furrow allows to drive with relative ease without falling into the path itself.
This adjustment can be made by moving the plough through the slide C thanks to
the spindle H.
Optionally this adjustment can be made hydraulically. In this case it is important to
always use the cylinder when the plough is resting on the ground so the channels of
the spool doesn’t get damaged.

4.5 - Other adjustments
The length of the third option must be adjusted in a way that the
frame adopts a parallel position to the ground, since the opposite
action would make the different rows of tines to work at different
heights, hence making an uneven labor. (Fig. 9).
For this very same reason, you must check that the tines get a
perpendicular position to the ground. (Fig. 10).
The tractor’ tines must be at the same height as the turning points
located at the headstock (Fig. 11).
Fig. 14
11
Fig. 15 Fig. 16

5.- Working Depth
Working depth is regulated through the lifting control of the tractor’ arms. Nevertheless, in order to get an even working depth, all ploughs
are equipped with a limiting working depth wheel(Fig. 12) whose height can be regulated through the cylinder T.
There is a conection between depth and working width that should be respected for achieving satisfactory results.
Fig. 17
12
T
Width
12” 14” 16” 18” 20”
30 35 40 45 50
Maximum depth
24 28 32 36 40
Minimum depth
15 17 20 22 25
Recommended depth
21 25 28 32 35
Inches
Cm
6.00*9” - 10PR V50 5 Bar.
200/60*14,5” - 10PR 5 Bar.
250/65*14,5” - 12PR 4,75 Bar.
320/60-12 132A8 421TT 4 Bar.
400/60*15,5”TL-14PR
FLOTATION
3,6 Bar.
500/45*22,5”-16PR 3,6 Bar.
08” 18x7 - 16PR TT 8 Bar.

6.- Transport and parking
13
D
B
C
Fig. 20
Fig. 18 Fig. 19
In order to ease transport, is recommended to display the Mini-Fat half-turn position for a minimum width. Optionally, if there·s no
transport and/or control wheel attached, a blocker (T) can be equipped, which blocks the Mini-F at half-turn position in a safe way.
Ploughs can be equipped optionally with polyvalent control/transport wheels. For using this wheel in its transport position you must follow
the next steps:
-Slightly elevate the plough and place the wheel on its transport position. For that you must remove the bolt B, turn the wheel over its
holder, and place the bolt on its C position (Fig. 15). Ovlac transport wheels are designed for maximum comfort and easy to use, no operation
on the damper neither the depth tops needed.
-Block the oscillating shaft through the bolts B1.
-Act over the pull of the locker placed in the headstock so the blocking bolt shows off the rear part.
-Act the turning of the plough for it to be blocked in half turning position.
-Lay the plough and remove the 3rd point.
The support pawn assures an static position of the plough on the parking.

7.- Maintenance
Must check how tighten the bolts are after the first 2 hours of labor,
specially the ones on the skimmers and shares. Afterwards, check every 100
hours of labor. By finishing the campaign, wash the plough and grease the
skimmers to avoid rust.
Lubing: must grease regularly the turning points based on the conditions of the
ambiental conditions, both dust and humidity, to assure that no waste of the machine
happens. In the reversible ploughs it·s recommended to grease, if the greasers allow
it, once per each hand (clockwise and counter-wise), assuring that the grease,
affected by gravity, it extends for the whole turn and not just from the greasing point
to below.
Safe maintenance
Get familiar with the maintenance proccedures before doing any labor.The working
area must be clean and dry. Not doing any greasing labor, repair or adjustment while
the engine is running. Keep the hands, feets, and clothes always far from the moving
components. Place all the hydraulic controls on neutral-gear in order to relieve
pressure. Lower all gear to the ground.
All the components must be in good shape and correctly installed. Repair damage
immediately. Change any wasted or broken piece. Keep all the components of the
machine clean off of grease, oil and accumulated dirt.
By dealing with trailed equipment, disconnecting the group of cables from the tractor
before doing any wielding on the machine.
Watch out for the high pressure leaks
Leaking fluids from the system might leak strong enough to tear flesh,
causing severe injuries. Therefore, is indispensable to leave the system
pressure-less before loosing or disconnecting any pipe and assure that all the
connections and connectors are well-tighten before applying pressure to the
system. In order to locate an hydraulic oil leak use a piece of cardboard
placed in between the connections. Don't get near high-pressure leak. Even if
after all this measures an accident happens, go immediately to see a doctor,
who should remove the fluid surgically in a few hours in order to avoid
gangrene. Unexperienced doctors with injuries of such nature may go to a
specialized medical center.
Maintenance of hydraulic cylinders. IMPORTANT: keep the plugs clean.
Abrasive particles, such as sand, metal sharps, may damage the cylinders,
causing inner leaks. Once unplugged off the tractor, place the protection bolts
and make sure they·re not touching the ground.
14

8.- Optional equipment
Ovlac ploughs can be equipped with:
1. Skimmers (Fig. 21)
2. Landslide extension (Fig. 22)
3. Transport wheel (Fig. 23)
4. Advanced wheel (Fig. 24)
5. 1st body working width hydraulic adjustment(Fig. 25)
6. Headstock blocking system for transport (Fig. 26) Fig. 22Fig. 21
Fig. 25
Fig. 24
Fig. 23
15
Fig. 26

9.- Spare parts
Spare parts orders must always be placed through dealers and will include the next indications:
- Type, model and plough's number of manufacturing. This data is indicated on the identification plate of the plough.
- Reference of the piece. Indicated on the spareparts catalogue.
- Name of the piece and quantity required.
- Method of shipping. Transport expenses run of the purchaser.
- NOTE: The terms left or right, indicated on the name, are meant to be understood always facing the plough from its rear view. When it
comes to supposed-to-break gear, rights are considered ll those that are part of the body that drifts to the rigth and viceversa.
- Note on warranty: must be clearly specified if the spare parts order are ordered under warranty time. The manufacturer will be the one to
decide if the order stands to warranty or not when replacing the pieces. Plus, warranty loses all its value if:
- Repairs Unauthorized by the manufacturer are made, unoriginal spare parts and bolts are inadequate.
- User goes though the power limit stated on the technical data sheet, or abnormal maneuvers are made.
16

Polígono Industrial, C/ TAF, P163
34200 - Venta de Baños
Palencia - España
[phone]
[e-mail]
www.ovlac.com