Dynacut MDM User manual

Minimum quantity lubrication system MDM
for external lubrication.
Operation manual.

Table of contents
Table of Contents
2
Foreword
3
Instructions for use
4
Intended use
4/5
Safety instructions
5/6
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
15
Maintenance
15
Cleaning
15
Decommissioning
16
Technical specifications
16

Foreword
We would like to thank you for your confidence in our product.
With the acquisition of a DYNACUT-MDM 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-MDM 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-MDM 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.
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, this means, 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-MDM 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-MDM 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-MDM 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 Regulating valve lubricant
3 Mixing head
4 Spray nozzle
5 Regulating valve atomizing air
Image 1
5
2
3
4
1

Controls
Description
6 Safety valve
7 Pressure regulating valve
8 Main valve air
9 Ball valve spraying air
10 Ball valve lubricant
11 Air connection 6 mm
12 Filling plug
Image 2
6
7
8
11
9
10
12