Dynacut MDE User manual

Minimum quantity lubrication system MDE
for external lubrication.
Operation manual

Table of Contents
Table of Contents
2
Foreword
3
Instructions for use
4
Intended use
4
Safety instructions
5
Function description
7
Aerosol generation
7
Layout and function
7/8
Pictorial representation
9
Controls
10
Assembly
11
Initial filling
12
Commissioning
13
Flooding of the transport lines
13
Default
14
Check the settings
14
Switch off the system
16
Maintenance
15
Cleaning
15
Decommissioning
16
Technical specifications
16

Foreword
Dear customer
We would like to thank you for your confidence in our product.
With the acquisition of a DYNACUT-MDE minimum quantity lubrication system for external
lubrication, you have decided to use environmentally friendly and economical technology. Our
high-quality minimal-quantity lubrication systems have been designed for use on modern
machine tools. DYNACUT minimum quantity lubrication systems for external lubrication are
built according to the generally recognized rules of technology and comply with the applicable
occupational safety and accident prevention regulations. However, hazards may arise during
their use, which can lead to physical damage to the user or to third parties or to damage to
the machine tool or other property.
In order to ensure trouble-free operation and to avoid dangers, please read this operating
instructions carefully and observe the notes contained therein.
Dynacut UG (haftungsbeschränkt)
Gewerbering 3
48734 Reken
E-Mail [email protected]
Homepage www.dynacut.eu

Instructions for use
Texts marked with this symbol indicate special dangers or mark work which requires
special caution.
This manual contains a general description of the system, as well as instructions for installation
and operation. The system also examines the specificity of the system.
Use the table of contents to find the information you need quickly and securely.
This operating manual is an integral part of the system and must be handed over to the new
operator when the system is sold.
Intended use
The DYNACUT-MDE minimum quantity lubrication must only be used and used
according to the instructions given in the operating instructions.
In particular, we would like to point out that hazardous substances of any kind, especially
substances classified as dangerous according to EC Directive 67/548 / EEC, Article 2, paragraph
2, as well as liquids such as chlorinated hydrocarbons, solutions with alcohol contents of more
than 30% Gasoline, nitro lacquers and nitro diluents (solvent mixtures for nitro lakes from
hydrocarbons and esters) and concentrated acids must not be filled into and distributed with
DYNACUT minimal-quantity lubrication systems and components and / or distributed with
them.
The minimum quantity lubrication system described here is intended exclusively for the
external lubrication of machining and forming processes. During external lubrication, the
lubricant is transported directly to the friction point between tool and workpiece via spray
nozzles, which are attached to the machine tool. Depending on the type of processing, one or
more spray nozzles per tool can be used.
The DYNACUT-MDE minimum quantity lubrication system can be used both for the initial
equipment of processing machines and for the retrofitting of processing machines with an
existing cooling lubricant supply.
Any other use or use beyond this is considered to be improper. Dynacut UG is not liable for
damages resulting from this.

The lubricants suitable for use in DYNACUT minimal-quantity lubrication systems for external
lubrication are specially adapted to the high requirements of the technology used in their
chemical and physical properties.
For this reason lubricants suitable for minimum quantity lubrication may be used.
We cannot assume any liability for damage caused by improper use of lubricants or by the use
of lubricants suitable for minimum quantity lubrication.
Safety instructions
Please observe the following safety instructions in order to ensure the trouble-free
functioning of the minimum quantity lubrication system and to avoid damage.
Spraying of lubricants or substances which are released for minimum quantity lubrication with
DYNACUT minimum quantity lubrication systems is not permissible.
Prior to any work on the system, e.g. cleaning or replenishing lubricant, etc., the system must
be disconnected from the compressed air supply and depressurized. The system must also be
disconnected from the electrical power supply.
Humans or animals must not be aerosolized. The aerosol must not get into the eyes and should
not be inhaled directly.
We point out that the spraying of mineral oils or mineral oil-containing substances can lead to
health damage.
Any kind of fire e.g. in the form of open flames, sparks, glowing cigarettes, etc., must not get
into the vicinity of the spray jet. The aerosol must not be sprayed on hot surfaces.
The generally valid rules and safety regulations for the work with compressed air and electrical
voltage carrying machinery and equipment must be observed.
The system may only be used in a technically perfect condition as well as in accordance with
its intended purpose, in accordance with safety and driving safety, observing the operating
instructions.
The existing safety devices must not be damaged, immobilized or rendered unusable or
replaced by parts other than those expressly approved by Dynacut UG.

In the event of a fault, the system should be disconnected as soon as possible from the
compressed air and voltage supply, e.g. by actuating the quick coupling on the compressed
air connection and pulling the mains plug.
The unauthorized conversion of the system as well as the use of unauthorized spare parts
and accessories are not permitted.
Used systems must be rendered unusable and then properly disposed of.

Function description
Principle of minimum quantity lubrication (MQL)
The minimum quantity lubrication is a loss or consumption lubrication, i. The lubricant used is
almost completely consumed during processing, so that preparation in the circuit is no longer
necessary. The actual lubrication task at the point of action between the tool and the
workpiece is achieved by means of oil droplet, the aerosol, which is finely dispersed in an air
stream. With the minimum quantity lubrication, an effective lubrication of cutting processes
can be achieved using the smallest amounts of lubricant. The elaborate cleaning and disposal
of large quantities of lubricating and cooling lubricants are thus eliminated or minimized.
Aerosol generation
The minimum quantity lubrication system DYNACUT-MDE described here produces a very
homogeneous aerosol, based on the size and the distribution of the oil droplets, since the
lubricant is atomized in a controlled manner. The functional principle of the spray nozzles
makes it possible to produce aerosols with a droplet size of approx. 15 - 35 μm.
Layout and function
The DYNACUT-MDE minimum quantity lubrication system consists of a lubricant reservoir, one
or several mixture regulating units and one or several lubricant lines with spray nozzle.
The lubricant reservoir is pressurized via a compressed air connection and hand valve. The
solenoid valves for air and coolant are opened by switching the main switch, whereby the
compressed air as well as the lubricant are transported to the spray nozzle via separate hoses.
The required quantity of lubricant and atomizer air is regulated via the throttle valves
mounted on the mixture regulating unit. The internal pressure of the lubricant reservoir is
adjusted via the control valve mounted on the lubricant reservoir.
At the end of the lubricant line is a spray nozzle, with the help of which the aerosol is
generated. The lubricant is then transported directly to the lubrication point using the carrier
air.

The minimum quantity lubrication system DYNACUT-MDE has a main air valve with which the
central compressed air supply can be interrupted.
The internal pressure of the lubricant reservoir is indicated by a manometer on the cover plate
of the lubricant reservoir.
The lubricant reservoir is filled with lubricant by opening the filler plug in the container cover
with an Allen key (10 mm) and filling the lubricant.

Pictorial representation
Description
1 Reservoir for lubricant
2 Mixing head
3 Spray nozzle
4 Power plug
5 Regulating valve atomizing air
6 Regulating valve lubricant
7 Optical level indicator
Image 1
5
3
6
2
1
4
7

Controls
Description
7 On-switch
8 Safety valve
9 Pressure regulating valve
10 Main valve air
11 Solenoid valve spraying air
12 Solenoid valve lubricant
13 Air connection 6 mm
14 Filling plug
Image 2
7
8
9
10
13
11
12
14

Assembly
Installation:
The minimum quantity lubrication system should be set up close to the processing machine. We
recommend mounting the system directly on the machine housing.
Do not install the system in a location where it is exposed to strong vibrations.
The system must not be placed near a heat source. Also unsuitable is a place that is
exposed to fast and strong temperature fluctuations.
The system must be installed vertically for proper operation. Under no circumstances should
it be installed upside down.
Also ensure good accessibility for the purpose of maintenance or lubrication.

Initial filling
The lubricant reservoir must be depressurised before filling the lubricant.
For the first use of the system, it is recommended to fill the lubricant reservoir before
connecting it to the compressed air and electrical power supply.
If the system is already connected to the compressed air supply, it must be ensured that the
lubricant supply tank has been depressurized before filling.
To make the lubricant reservoir unpressurised, first disconnect the system from the
compressed air supply by disconnecting the system from the air line or closing the main valve
(10 Figure 2).
When the main valve is closed, the tank pressure is relieved via this valve.
Check that the print has been completely removed. The manometer must show the value
'zero'.
If you are sure that the pressure has been completely relieved, you can now open the filling
plug (14 Fig. 2) and fill the lubricant.
Attention:
Only suitable minimum quantity lubricants may be used as lubricants.
Please note that we cannot assume liability for damage caused by the use of
unsuitable lubricants.
Be sure to close the filler plug after filling.

Connections:
The connection of the system may only be carried out by appropriately qualified
and instructed personnel. The instructions contained in this operating instructions
must be observed.
Compressed air supply:
Before connecting the compressed air line, ensure that the main air valve is closed.
The minimum quantity lubrication systems may only be operated with the specified maximum
operating pressure. Higher pressure causes danger for human and machine.
Commissioning:
For the commissioning of the minimum quantity lubrication systems, the flooding of the
transport lines, the setting of the operating parameters and a functional test are important.
Flooding of the transport lines:
In the delivery state, the capillary hoses of the transport lines are not filled with lubricant. In
order to fill the often meter-long lines, the system would have to remain switched on for an
extended period while the lubricant slowly travels to the spray nozzle. In order to speed up
this process, a flooding of the transport lines should be carried out during initial
commissioning. Long waiting times before the first use are thereby avoided.
The procedure for flooding the transport lines is as follows:
Close solenoid valves for atomizer air and coolant by switching off the main switch (7 Fig. 2).
Connect the system to the compressed air supply.
Use the pressure reducing valve (9 Fig. 2) to adjust the operating pressure to 0.3 to 1.5 bar,
depending on the viscosity of the coolant.
Spray the spray nozzles as far down as possible into a lubricant collecting tank,
Open solenoid valves by switching on,
Fully open the lubricant control valve (2 Fig. 1) to increase lubricant flow.
As soon as the lubricant exits the nozzle without bubbles, close the lubricant control valve as
far as it will go.
Close solenoid valves.

Default
The adjustment of the valves depends on all process parameters such as cutting speed,
materials, cutting tool, etc. and must therefore be re-adjusted on a case by case basis by the
machine operator.
The basic setting of the systems is as follows:
Open main valve for air.
Adjust the operating pressure via the pressure reducing valve (9 Fig. 2) depending on viscosity
to 0.2 - 1.5 bar.
Turn on solenoid valves for atomizer air and coolant.
Adjust the necessary lubricant quantity via the lubricant control valve (6 Fig. 1).
Adjust the carrier air quantity and thus the pressure via the atomizer air valve (5 Fig. 1).
Check the settings
Point the spray nozzle onto the cutting edge of the standing tool and observe if a lubricant
film is formed. If necessary, increase the amount of lubricant or atomizing air.
The distance between the spray nozzle and the tool tip should be kept as low as possible. If
the distance is too long, the tool cutting edge is not sufficiently lubricated.
Note: the larger the distance, the greater the spray angle of the spray nozzle.
Start machining and adjust the aerosol quantity and the aerosol composition to the machining
process by using criteria such as lubricant, cutting parameters, surface roughness and tool
wear to change the setting.
We recommend that you use test runs to determine and optimize the setting values required
for your application in order to get the best result for your machining process.
If necessary, use two spray nozzles, which are arranged at an angle of 180 ° to optimize the
aerosol supply to the lubrication point.

Switch off the system
The minimum quantity lubrication is set in the reverse order of commissioning.
Maintenance
DYNACUT minimum quantity lubrication systems are low maintenance. However, to ensure
proper operation and to avoid dangers from the start, you should check all connections and
connections regularly.
Cleaning
Cleaning outside:
If necessary, the minimum quantity lubrication system can be cleaned with mild, material-
compatible (not alkaline, no soap) cleaning agents.
For safety reasons, we recommend that the minimum quantity lubrication system be
disconnected from the compressed air and electrical voltage supply and that the container
must be depressurized. When cleaning, connect the hoses as far as possible and close any
openings so that no cleaning agents can penetrate into the interior of the minimum quantity
lubrication system.
Cleaning inside:
In normal operation and when using lubricants which are compatible with each other, an
internal cleaning is not necessary. If an incorrect or dirty lubricant has been accidentally
filled, an internal cleaning of the lubricant reservoir must be carried out.

Decommissioning
Temporary decommissioning
For a temporary shutdown of the minimum quantity lubrication system, disconnect the
entire system from the compressed air and electrical power supply and depressurize the
tank. In the case of a longer shutdown, it is advisable to also drain the lubricant.
Final decommissioning
If you want to permanently shut down the minimum quantity lubrication system, please
observe the legal regulations for the disposal of oil-bearing components.
Technical specifications
Description
Unit
DYNACUT MDE
Reservoir
Housing design
Mounting position
Capacity
Coolant consumption
Air consumption
Coolant outlets
Mass
L
ml/h
l/min
kg
PE-plastic
Vertical
1,5
0-100
25-50 Per exit
1-2
3
Compressed air
Input pressure max.
Input pressure min.
Operating pressure max.
bar
bar
bar
8
2,5
2 (Adjusted to 1 bar)
Connections
Compressed air connection
Power supply for valves
mm
V
6
230V AC / 24V AC / 24V DC

Konformitätserklärung im Sinne der
Niederspannungs-Richtlinie 2006/95/EG
Original-Konformitätserklärung
Hersteller:
Dynacut UG (haftungsbeschränkt)
Gewerbering 3
48734 Reken
Deutschland
Produkt:
Minimalmengenschmiersystem
DYNACUT-MDE
Hiermit erklären wir, dass das oben genannte Produkt allen einschlägigen Bestimmungen der
folgenden Richtlinien entspricht:
Niederspannungs-Richtlinie 2006/95/EG:2006-12-12
EMV-Richtlinie 2004/108/EG:2004-12-15
Folgende harmonisierte Normen wurden angewandt:
EN 60204-1:2006/AC:2010 Sicherheit von Maschinen - Elektrische Ausrüstung von Maschinen - Teil
1: Allgemeine Anforderungen
EN 61000-6-2:2005/AC:2005 Elektromagnetische Verträglichkeit (EMV) -
Teil 6-2: Fachgrundnormen - Störfestigkeit für Industriebereiche
EN 61000-6-4:2007/A1:2011 Elektromagnetische Verträglichkeit (EMV) -
Teil 6-4: Fachgrundnormen - Störaussendung für Industriebereiche
EN ISO 4414:2010 Fluidtechnik - Allgemeine Regeln und sicherheitstechnische Anforderungen
an Pneumatikanlagen und deren Bauteile
EU Richtlinie 2011/65/EU RoHS Konformität
Jahreszahl der CE-Kennzeichenvergabe: 15
(die beiden letzten Ziffern)
Reken, den 04.05.2015
Hermann Lensing, Geschäftsführer