machine technologies D-25 User manual

620, County Road 4841. Haslet, TX 76052
Ph 817.439.1108 Fax [phone]
www.machine-technologies.com
D-25 Continuous mixer
User Manual
Electric
#60010054 ASSY, MIXER, CONTINUOUS-D25-132LB
#60010085 ASSY, MIXER, CONTINUOUS-D25-78LB
#60010093 ASSY, MIXER, CONTINUOUS-D25-2"
#60010084 ASSY, MIXER, CONTINUOUS-D25-132LB-3 PHASE
#60010108 ASSY, MIXER, CONTINUOUS-D25-78LB-3 PHASE
#60010098 ASSY, MIXER, CONTINUOUS-D25-2"-3 PHASE
#60010106 ASSY, MIXER, CONTINUOUS-D25-132LB-480V-3 PHASE
#60010099 ASSY, MIXER, CONTINUOUS-D25-78LB-480V-3 PHASE
#60010107 ASSY, MIXER, CONTINUOUS-D25-2"-480V-3 PHASE
REV-6 08/30/08

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Dear Customer,
Before starting this machine please complete the following;
Machine Date of purchase…………………………………..
Machine serial number………………………………………
Please read the following information contained within this manual and fully familiarize
yourself with the equipment.

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Contents Page
Section 1 -General Safety information........................................................................... 4
Danger............................................................................................................................. 4
Section 2 -Machine Description...................................................................................... 5
Function.......................................................................................................................... 5
Machine illustrations..................................................................................................... 6
Machine....................................................................................................................... 6
Base Frame assembly................................................................................................. 7
Hopper unit................................................................................................................. 8
Mixing Nozzle Assembly............................................................................................ 9
Assy,Breaker-Dosing-Mix-D25 ............................................................................... 10
Dosing / Feed screw -60010069 -ASSY,HELIX-CONT MIXER-132LB........... 11
Dosing / Feed screw -60010074 -ASSY,HELIX-CONT MIXER-78LB............. 11
Dosing / Feed screw -60010088 -ASSY,HELIX-CONT MIXER-2".................. 11
Wear liner assembly, Seal, Seal clamp, Bolts and Washers................................. 12
Electronic Drive module.......................................................................................... 13
Drive motor unit....................................................................................................... 15
Water Control Module............................................................................................. 16
Section 3 –Transportation and positioning.................................................................. 17
Section 4 –Machine set up............................................................................................. 19
Unpacking and assembly............................................................................................. 19
Electrical connections.................................................................................................. 26
Section 5 –Machine operation / speed setting.............................................................. 28
General notes for operation........................................................................................ 28
Section 6 –Maintenance................................................................................................. 29
Wear parts.................................................................................................................... 29
Maintenance................................................................................................................. 29
LIMITED WARRANTY POLICY.............................................................................. 30

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Section 1 -General Safety information
Danger
Follow these instructions very carefully, in order to avoid injury to yourself or others.
Electrically powered machine.
Always ensure that all power to the machine has been turned off and isolated before
ANY maintenance / repair work is carried out on the machine.
Ensure that all guards are correctly fitted before starting or attempting to operate the
machine.
Ensure that all fasteners are present and correctly fitted before attempting to start or
operate the machine.
Ensure that the nozzle unit is correctly fastened to the front of the mixer unit of the
machine, and free of damage before attempting to start or operate the machine.
Ensure that the breaker assembly is free to rotate within the nozzle assembly prior to
starting the machine.
The D-25 continuous mixer unit can produce high torques and can use high voltages.
Care must be taken by authorized persons when using and working with this machine.

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Section 2 -Machine Description
Function
The continuous mixer uses pre-bagged, pre blended material, that is broken via the bag
breaker on the hopper, and poured into the hopper, that then discharges into the nozzle
and mixes it with water, to provide a usable mixture at its outlet.
The machine has a drive motor, that turns a drive shaft within a material hopper that in
turn rotates a helical feed screw, in turn rotating a mixing shaft. The combination of these
shafts and mixing components move material from the hopper through to the mixing
nozzle, that with the addition of an adjustable water control that hydrates the mixture to
the desired level. The mixing tines in the nozzle tube, mix and shear the material so that
once it emerges from the discharge aperture, the mixture is correctly mixed and sheared
ready for use or for pumping to the application.
The machine is driven by an electric motor powered by 220VAC 3 phase 60/50Hz, via
an electronic variable speed inverter supplied by two phase 208VAC 60 Hz, or 220/240
VAC 50/60Hz, or 440/480 VAC 60Hz 3phase. Input power
The inverter control box allows the user to adjust the speed of rotation and in turn the
volumetric displacement per rev of the feed screw, to provide the require “flow” of
material. The control box also contains control for a water valve that operates when the
unit is started in the “feed” direction. If the unit is reversed for any reason the water will
turn off, and then turn back on once the reverse knob is released.
The continuous mixer is fitted with a water control assembly, that contains a pressure
regulator, a control valve and a visual water flow meter. The flow of water out of the
flow meter into the mixing nozzle is adjustable via the control knob at its base. Turning
clockwise slows the flow rate, counter clockwise increases the flow.
The difference between the machines is primarily the material dosing rate, which is
controlled by the dosing screw. There are three styles of dosing screw available, a “132
lb” a “78 lb” and a “2””, the differences in the screws being the pitch.

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Machine illustrations
Machine
1–Hopper unit 2 – Mixing nozzle assembly 3 – Base frame assembly
4–Inverter drive module 5 – Drive motor 6-Water control module
7-Bag Breaker. 8 – Water hose assy 9 – Power cord and socket.

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Base Frame assembly
The base frame can be re-configured to have the wheels, axle etc. located at the opposite
end of the unit, with the handle thus also being mirrored. The control panel assembly on
handle assembly can be moved, by pulling the pins keeping the handle assembly in place
in the frame, then sliding the handle out, allowing access to the control box itself
1–Base frame 2 – Handle 3 – Axle lock 4 – Axle
5–Wheel / Tire

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Hopper unit

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Mixing Nozzle Assembly
–132LB shown (60010056). The complete mixing nozzle assembly is available in three
different versions, low output (78LB), standard output (132LB) and High output (2”).

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Assy,Breaker-Dosing-Mix-D25
-132LB shown (60010066). Alternatively, the complete Assy, Breaker-dosing-mix is
available in three different versions, Low output (78LB) 6001007, Standard output
(132LB) 60010066-shown, and High output (2”) 60010091

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The primary difference between ALL the various combinations of low, standard
and high output shaft, tube etc. assemblies is the dosing / feed screw
Dosing / Feed screw -60010069 -ASSY,HELIX-CONT MIXER-132LB
Dosing / Feed screw -60010074 -ASSY,HELIX-CONT MIXER-78LB
Dosing / Feed screw -60010088 -ASSY,HELIX-CONT MIXER-2"

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Wear liner assembly, Seal, Seal clamp, Bolts and Washers

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Electronic Drive module
The electronic Drive module comprises of a variable speed frequency inverter, allowing
the use of 220VAC two phase to run the high torque 3 Phase gear motor. The unit is rated
at 4KW providing plenty of power to run the D-25 unit.
The module is supplied with an input plug allowing immediate wiring into your own
220VAC 2 phase supply (Must be carried out by an approved installer). The motor is
supplied with a pre-wired plug that fits into the 3 Phase outlet of the module.
The module has a main power isolator, a combine stop / start switch, a spring return
reverse switch, a speed control potentiometer, internal breakers, for each input phase, a
large capacity cooling fan in addition to the fan fitted to the inverter, and a remote socket,
providing the optional capability for remote operation.
Upon delivery, the inverter drive inside the control box is pre-configured to suit your
machine, the configuration can however be altered to specifically suit many special needs
regarding torques, min speeds and max speeds. For information on these topics please
contact Machine Technologies directly.

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To access the control box, remove the two pins from either side of the frame assembly,
and withdraw the handle with the control box mounted to it from the main frame. Do not
fully withdraw the handle and box, as damage could result from dropping to the ground.

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Drive motor unit
The machine is supplied with an electric motor drive.

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Water Control Module
The water control module allows the hook up of a typical water feed to the inlet port.
When the solenoid is turned on via the connector from the control box water flows
through the inline pressure regulator through the solenoid valve into the adjustable visual
flow meter, and out though the outlet connector. The flow rate can be adjusted at the base
of the flow meter using the control knob.
When the unit is left standing for any length of time, or to be stored for freezing
temperatures, the water within the system must be drained to prevent damage due to
freezing. loosen the two drain cocks (7) and allow the water to drain out, leave loose unit
the unit is to be re-used. DO NOT OVER TIGHTEN when putting back into service.
4 GPM unit shown
1-Water flow meter 2 – Pressure regulator 3 – Solenoid valve 4 – Mounting
5–water INLET 6 – Water OUTLET 7 – Drain cocks

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Section 3 –Transportation and positioning
The machine is typically manually transported around the job site by dropping and
locking the wheels in the down position, then using the nozzle like the handles on a
wheel barrow.
Lift the machine at the wheel end, and lift UP the axle lock bar and the wheels will drop
to the ground. At the same time the lock bar can be dropped which will “lock” the axle in
the down position, allowing the unit to be wheeled to position.

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Once in position, the lock bar can be raised, and the whole unit will drop, lifting the axle
and the wheels. The lock bar, on level ground, will catch the axle to keep it from
lowering.

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Section 4 –Machine set up
Unpacking and assembly
Consult the final inspection record supplied in the packing for details of your machine
and the items checked prior to shipment. Keep this document for your records.
Remove the unit from the packing and the pallet.
If required,
Pre assemble the motor assembly onto the rear of the hopper, hanging it on the location
rods.
Assemble the motor onto the rear of the hopper and secure with the wedges supplied.

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Remove the safety grid from the top of the hopper, to allow you to rotate the breaker bar
assembly already fitted inside the unit.
If required, rotate the breaker bar in the hopper to engage the flat end into the slot in the
drive / hauling bracket of the motor assembly.