Copyright in these operating instructions is owned by m-tec mathis technik gmbh. These operating instructions are
intended for use by installation, operating and maintenance personnel. They contain technical regulations and
drawings which may not be copied, distributed, used for advertising purposes, or communicated to third parties
either in whole or in part without authorisation.
Technical development:
The manufacturer reserves the right to modify technical data without notification in order to reflect the current state
of technical development. For information regarding the current status, alterations or additions to these operating
instructions, please contact m-tec.
this machine represents the current state of the art and complies fully with
general standards and EEC guidelines. This is indicated by the CE symbol and
the enclosed declaration of conformity in the pocket on the machine.
Before starting the machine for the first time, please remove the
declaration of conformity from the pocket and keep it in a safe
place.
Before starting the machine up, please complete the form below. This is the
easiest way to familiarise yourself with the characteristics of the machine, and
the main data can be consulted at any time without reading them off the rating
plate on the machine. If you wish to consult us at any time, please have the
information on this page ready at hand. The data you require can be found on the
machine plate.
the current state of the art and has left the
manufacturer ’s plant in perfect condition. However,
it may be dangerous if used incorrectly, for the
wrong purpose, or by untrained personnel. All
persons using the machine must therefore read and
understand the operating instructions, in particular
the section entitled “Safety” before starting the
machine. To avoid unnecessary damage and ensure
efficient operation, the user should also familiarise
himself with the operation of the machine.
To ensure that they are permanently available for
consultation, the operating instructions should be
kept in the special pocket on the machine at all
times.
It is prohibited to modify the machine in any way.
Use only spare parts and lubricants approved by
m-tec mathis technik gmbh.
In these instructions, the following symbols are used:
This symbol is used to identify danger of serious
injury. Pay particular attention to these instructions
and to the safety of other persons in the vicinity of
the machine and its components.
This symbol is used to identify potential danger to
the material or the machine. Observe these
instructions to avoid damage to property.
This symbol is used to indicate that environmental
legislation must be observed.
This symbol is used to indicate additional information
on the machine which may be useful or helpful.
operating, cleaning, and servicing the machine, the
applicable national and international safety
regulations and legislation must always be
observed, even if such regulations and legislation
are not explicitly mentioned in these instructions.
The following instructions must also be observed
at all times:
• The machine must be positioned firmly on a level
surface. It must be secured to prevent it from tilting
or moving.
• The machine must be positioned in an area where
no objects can fall onto it from above. If this is not
possible, it must be protected by a roof.
• The machine must be positioned in such a way that
all the operating elements are easily accessible at
all times.
• Before working on electrical components, always
pull out the power plug, as certain components
remain live even when the machine is switched off.
• Before every shift, the machine must be carefully
inspected for signs of damage, in particular to
electric cables, plugs and couplings. Any damage
must be repaired before beginning work!
• Safety fittings – the grid on the mortar funnel and
the hood protecting the wedge-belt drive – must be
correctly installed and fastened before starting the
machine.
• The machine must be connected only to a
regulation site distributor box fitted with an FI
automatic circuit breaker.
• For the 230 V version of the machine, fuse protection
must be at least 16 A.
• For the 400 V version of the machine, fuse protection
must be at least 10 A.
• The connection cable for the 230 V version of the
machine must have a cross section of at least
3 x 2.5 mm2 and be fitted with a connector with an
earthing contact.
• The connection cable for the 400 V version of the
machine must have a cross section of at least
5 x 1.5 mm2 and be fitted with an EEC connector
coupling.
• Never put your hands into the machine when it is in
operation!
• Do not put your hands into the mortar outlet!
• Before repairing malfunctions or cleaning or
maintaining the Continuous Mixer D20, always
switch it off and pull out the power plug.
The Continuous Mixer D20 is a universally applicable
machine for mixing dry, ready-mixed mortars such as:
Masonry mortar
Various types of plaster
Adhesive mortar
Floor cement
Fine concrete
The machine is designed to be filled with bagged
material. Additional fittings are required for use with
material from a silo.
!
Use of the machine for any other purpose than
those described above is prohibited.
2.2Method of function
An electric motor powers a belt drive which in turn
drives a feed screw which transports the dry material
from the material trough into the mixing pipe. In the
mixing pipe, the material is mixed with water by a
mixing shaft and then conveyed out of the pipe.
The consistency of the material can be set by
adjusting the amount of water at the fine-adjustment
valve. A solenoid valve cuts off the water supply when
the machine is switched off.
The machine can also be supplied with a built-in
pump for increasing the water pressure.
A safety flag ensures that the mixing pipe is
uncoupled only when the power plug has been
extracted previously.
The machine is switched on and off by means of a
double push button on the switch box. In emergencies, the machine can be switched off quickly via a
red emergency switch.
operating, cleaning, and servicing the machine, the
applicable national and international safety
regulations and legislation must always be
observed, even if such regulations and legislation
are not explicitly mentioned in these instructions.
3.1Transporting the machine
• Empty the material trough before moving the
machine
• When moving the machine with a crane or lifting
gear, the tackle used (e.g. rope or belt) must have a
minimum load-bearing capacity of 300 kg.
• Fasten the belt or rope to the special lugs on the
The machine must be positioned firmly on a level
surface. It must be secured to prevent it from
tilting or moving.
The machine must be positioned outside danger
zones where overhead work is in progress. If this is
not possible, it must be protected from falling
objects by a roof.
The machine must be positioned in such a way
that all the operating elements are easily accessible
at all times.
operating, cleaning, and servicing the machine, the
applicable national and international safety
regulations and legislation must always be
observed, even if such regulations and legislation
are not explicitly mentioned in these instructions.
Before every shift, the machine must be carefully
inspected for signs of damage, in particular to
electric cables, plugs and couplings. Any defects or
damage must be repaired before beginning work
4.1Preparations for filling with bagged
material
The machine is designed for filling with material
supplied in bags. For use with material from a hopper,
additional fittings are required (filter hood and feeder
unit or transfer hood). See section 9, Accessories.
Pull the power-supply cable out of the coupling in
the switch box.
• Remove the safety grid from the mortar trough
• When using a feeder unit: mount the filter hood and
connect the feeder hoses of the feeder unit
• When using a transfer hood: fasten the transfer
hood securely to the continuous mixer with the
fastening set supplied. Couple the adapter to the
flange of the silo and open the rotating flap of the
silo.
D20 230/400 V – 392570 – 01/99
Page 19
Start-up
4.2Water connection
• Connect the internal water hose to the GEKA
coupling on the mixing pipe
• Connect the machine to the water inlet using a hose
with a 3/4" GEKA coupling
• Turn on the water supply
4.3Power supply
The machine must be connected only to a
regulation site distributor box fitted with an FI
automatic circuit breaker.
For the 230 V version of the machine, fuse
protection must be at least 16 A.
For the 400 V version of the machine, fuse
protection must be at least 10 A.
The connection cable for the 230 V version of the
machine must have a cross section of at least
3 x 2.5 mm2 and be fitted with a connector with an
earthing contact.
19
!
The connection cable for the 400 V version of the
machine must have a cross section of at least
5 x 1.5 mm2 and be fitted with an EEC connector
coupling.
Before connecting the machine to the power
supply, ensure that the mixing pipe is correctly
attached.
When transporting, assembling, dismantling,
operating, cleaning, and servicing the machine, the
applicable national and international safety regulations and legislation must always be observed,
even if such regulations and legislation are not
explicitly mentioned in these instructions.
Safety fittings – the grid on the mortar funnel and
the hood protecting the wedge-beld drive – must
be correctly installed and fastened before starting
the machine.
Do not put your hands into the mortar outlet!
5.1Filling with bagged material
• Open one sack at a time on the grid of the material
trough and allow material to fall into the trough.
21
!
Dispose of empty mortar sacks in accordance with
environmental legislation.
5.2Filling with silo material
Always observe the operating instructions for the
feeder equipment or transfer hood!
• Check the mortar emerging from the material outlet
!
Fig. 7:
Adjusting the
material
consistency
1 Fine-adjustment
valve
Do not put your hands into the mortar outlet!
• If required, adjust the material consistency by
setting the fine-adjustment valve (anti-clockwise
direction = more water, clockwise direction = less
water)
During intervals in work, remember the setting
time of the material being used. Hardened or
partially set material may cause difficulty in
starting the machine. The machine may also be
seriously damaged.
The material sets more rapidly at high
temperatures.
• Before long intervals in work, empty the machine
and clean it thoroughly. See section 6.
5.5Winter operation
Under sub-zero temperatures, the machine may be
seriously damaged if components filled with water
are allowed to freeze!
Before intervals in work and after cleaning the
machine, the water fittings must be completely
emptied. To do this:
23
• remove the feed hoses and empty them
• open the draining valves of the water fittings
• close the draining valves before using the machine
again.
The water sieves in the water fitting must be removed
and cleaned every four to six weeks. To do this:
• Remove the cover hood
• Remove and clean the water sieves in the water
infeed and pressure reducer: rinse them with water
and – if necessary – blow them out with air (Fig. 13)
Modifications to the machine are prohibited. Use
only spare parts and accessories supplied by m-tec
mathis technik gmbh. If spare parts and accessories
of other types are used, m-tec mathis technik gmbh
will assume no liability for any accidents which
may occur.
Orders for spare parts and accessories should be
addressed to: