UTIFORM Delta-Mini User manual

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INSTRUCTIONS
Delta-Mini

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Introduction
Please read this User Manual carefully before using your new Mini pump. It is essential
that the operating personnel become thoroughly familiar with all the functions and workings of
this machine in order to avoid errors that could lead to the machine being damaged.
We recommend thorough care and careful handling of the machine so that your Mini
will have a long working life and not experience any breakdowns.
Please send the guarantee request form that you were given when you purchased your
new Mini to the factory without delay. You will then receive your certificate of guarantee and
will be added to our client base. This will enable you to receive information about new products
and all the possible uses of the Mini.
If any problems were to occur, or if you need to order spare parts or request the help of
our Customer Service, please either contact your nearest UTIFORM dealer, or contact us
directly. If you wish, we can provide you with the name of your nearest dealer.
The User Manual has an appendix with a detailed list of all the spare parts for the Mini.
In order to avoid mistakes in deliveries please always indicate the exact name and part number
from this list when making your orders.
To avoid possible damage to the machine caused by using spare parts that are either
defective or of poor quality, you should only use original UTIFORM wear and spare parts that
have been tested appropriately.
Please fill in the form below so that you know the basic characteristics of your machine
and have these easily at hand for when you need to order spare parts. You will find the data to fill
in here on the plaque with the machines characteristics.
MINI
Machine number
Engine head
.............................................
Type......................................
Number.................................
We reserve the right to carry out any technical modifications to the machine that lead to
its improvement although not specified in this manual.
User Manual Number ........................................................................................................
We wish you every success with your new Mini pump.

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1 Technical description 4
2 Operating mode 4
3 Technical Information 5
3.1 Standard model 5
4 General safety guidelines 6
4.1 Safety 7
4.1.1 Designated use 7
4.1.2 Indication of danger 8
4.1.3 Security in the workplace 8
4.1.4 Safety rules for conveyers and spraying machines 9
4.1.5 Protective devices for personnel 9
4.1.6 Other suggestions 9
5 Start-up 10
5.1 Installation of the machine 10
5.2 Electricity supply point 10
5.3 Water supply point 10
5.4 Product hose placement and lubrication 10
5.5 Connection of air hose
and spraying lance 10
5.6 Checking the rotation direction 10
5.7 Loading of air into the water regulator 11
5.8 Adjustment of water regulator 11
5.9 Pressure test of the perpetual screw pump
(stator- sleeve) 11
5.10 Amount of water required 12
5.11 Machine start-up 12
5.12 Spraying 13
6 Speed Variator 13
6.1 Commissioning of the ATV 18 variator 13
17
7 Interruptions in Operation 20
7.1 Brief interruptions 20
7.2 Long interruptions in work and completion of work 20
7.3 Stoppage of the machine 21
8 Service and maintenance 22
9 Faults and corrective actions 23
10 Accessories 25
11 EC Declaration of Conformity 26

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12 Appendix 28
12.1 Combined diagram
12.2 Water system
12.3 Air system
12.4 Water pump
12,5 Compressor delta 75
12.6 Straight spraying gun and hoses
12.7 Fittings
12.8 Circuit board
12.9 Mini 220 V electronic control panel distribution
12.10 Mini 220 V electronic control panel connection.
12.11 Mini 220 V electronic control panel variator outlet.
12.12 Mini 220 V electronic control panel power diagram.
12.13 Mini 220 V electronic control panel manipulation diagram.
12.14 Mini 220-380 V electronic control panel distribution.
12.15 Mini 220-380 V electronic control panel connection.
12.16 Mini 220-380 V electronic control panel variator outlet.
12.17 Mini 220-380 V electronic control panel product outlet.
12.18 Mini 220-380 V electronic control panel power diagram.
12.19 Mini 220-380 V electronic control panel manipulation diagram.

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1 Technical description
The Mini forms part of UTIFORM’s long trajectory in manufacturing mixing pumps for
bagged material. These machines mix the material to a homogenous consistency while also
allowing the hydro-mechanical transport of the material by means of a perpetual screw pump.
The Mini pump is loaded with bagged material. Compared to the traditional systems, this pump
has a more functional structure, while requiring less maintenance, and is particularly suitable for
mixing and conveying prepared mortars and dry premixed material such as adhesive for tiles,
structured mortars and plaster as well as mortar for plastering. The Mini is ideal for those
situations where an immediate availability of material is more important than the pumping
capacity.
The machine itself comprises a dry material deposit which has the mixing tube
connected to it at the bottom. At the top of the dry material deposit there is a motor reductor with
its corresponding cover which activates the mixing beater by means of a stop shaft. The
transversal bar of this then activates the perpetual screw of the mixing pump eccentric situated at
the bottom of the mixing tube.
The mounted perpetual screw pump comprises an auto adjustable and fixed (stator)
cover for the perpetual screw, and a perpetual screw for the eccentric (rotor) made of a material
highly resistant to wear and tear. With this system the nuisance of having to adjust and retighten
the stator screw is avoided.
To avoid damage during transport the machine’s chassis is installed with both the
electronic control panel and other control devices as well as the valves to regulate the exact
amount of water in the mix.
2 Operating mode
The operating mode is similar to that of a mixing pump. The dry material deposit is
loaded with the bagged material. The dry material falls into the dry area of the mixing tube and
the motor reductor makes the mixing beater turn. The mixing beater has spiral screw threads
which bring the dry material to the wet area of the mixing beater. A small joint provides a
continuous jet of water which can be regulated with precision. The dry material and the water are
mixed together in the shortest possible time and are transformed into a mass which can be
pumped and is ready to use.
The single screw pump installed at the bottom of the deposit transports the mixture
through the flexible pipe with a pumping capacity of up to 20 l/min, and brings it to the
projecting lance. The pump can be activated or deactivated by means of a remote pneumatic
control installed in the projecting spout. The pressure control valve in the water measuring
device makes the machine stop if the water pressure is insufficient. To enable ease of transport
the machine has two rubber-encased wheels that turn and two fixed ones, which makes it easier
to manoeuvre on a building site.

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3 Technical Data
Machine type ........................................................................DELTA - MINI
Power of motor.....................................................................2.2 Kw three-phase head motor
Electrical connection ............................................................230 V./50 Hz.
Network connection .............................................................CEE 2P+T 16 A./6h.
Control connection ...............................................................48 V./50 Hz.
Current..................................................................................16 A.
Type of spiral pump(sleeve).................................................(according to client preference)
Capacity................................................................................5 to 20 l/min. (*)
Pumping pressure .................................................................max.15 bares max. (*)
Pumping distance .................................................................up to 15 mts. (*)
Air compressor .....................................................................170 l/min. approx.
Maximum air pressure..........................................................3.5 bars
Required water pressure .......................................................3 bars
Water coupling .....................................................................Geka
Loading height......................................................................1050 mm.
Width....................................................................................590 mm.
Length...................................................................................1280 mm.
Total height ..........................................................................1410 mm.
Weight ..................................................................................Approx.155 Kg.
(*) Depending on the type of material, consistency and length of conveying hose.
3.1 Standard model
- 1 Membrane compressor, approx. 170 l/min.
- 1 230 V wet-rotor pump
- 1 Tool box
- 1 25mm straight projecting lance with spout.
- 1 Standard mixer
- 1 Stator (shirt) of choice
- 1 Rotor
- 1 Set cleaning tools (scraper and restorer)
- 1 Nozzle cleaning tool
- Wrenches (2 flat wrenches, 1 ring wrench, 1 pressure regulator /socket wrench,
wrench for switch board)
- 2 Rubber cleaning balls 35 mm.
- 10-metre material conveying pipe, 25 mm diameter with coupling.
- 10-metre air pipe 3/8” with coupling.
- 5-metre water pipe 3/4” with absorption valve.
- 25 metres of electric piping 5x2’5 mm2with base.
- 1 CEE Conformity Certificate.
- 1 6-month guarantee.
- 1 User manual and list of machine parts.
Optional:
- 1 pressure checker with gauge
- Additional piece for hopper to increase capacity.
- Full insufflation hood and bore.

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4 General safety guidelines
In order to make working with the Mini easier and safer we have listed here the most
important safety regulation which should be followed to avoid any danger when working with
the machine.
INSTRUCTIONS FOR USE
1.- The MINI is designed to mix, convey and spray mineral building materials. The
machine should only be used for the tasks for which it has been designed and the manufacturer’s
User Manual should be followed at all times.
2.- The machine should only be used by experienced personnel (machinery operators)
who have been previously instructed in the operating procedures and maintenance. They should
be familiar with its workings and have read the User Manual thoroughly.
3.- The machine should be positioned firmly on the site and secured so that there are no
unwanted movements.
4.- Machines that run on electricity need to be connected to a suitable feeder socket (one
that has a protector switch in the case of defective electrical currents).
5.- The machine must be installed at a safe distance from high scaffolding and should be
protected against any possible damage from falling objects.
6.- The conveying pipes must be fixed in such a way that any strain is absorbed by
adequate filtration points (hooks for pipes). This is especially important for pipes in a raised
position.
7.- The conveying pipes must also be positioned in such a way that no damage will
occur. If they cannot be laid completely straight and must be laid with a curve, then the radius of
the curve should be no less than six times the exterior diameter of the pipe.
8.- Use only original UTIFORM high pressure pipes for materials. These come with
built in couplings.
9.- Before switching on the machine you should check that nobody will be put in danger
by doing so.
10.- When the machine in used you must check that the conveying pipe has sufficient
prelubrication, that is, that the material used can be easily pumped and that there are no points
left unsealed at the joints of the pipe.
11.- Both in the case of activation or failure of the security devices, the machine must
be stopped until the problem has been eliminated.
12.- Before opening the conveying pipe system or any other component of the
conveying system that is under pressure, you must first check that there is no pressure in the
system.
13.- Blockages in the pipes must be eliminated following the instructions in this User
Manual. The person in charge of carrying out this operation must position himself where he will
not be reached by spraying material. Nobody else should be in the surrounding area.

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14.- Security and accident prevention devices should not be removed or modified, and
these must be handled correctly.
15.- Whenever the machine is being cleaned or repaired it should be turned off at the
mains switch, otherwise the pneumatic remote control could start up the main motor by itself.
16.- Before starting the machine the operating safety of this must be checked. As soon as
any faults are detected, or even indications of these, they should be eliminated immediately and
the personnel supervisor notified. In the case of finding any faults that may endanger operating
safety, use of the machine must be interrupted.
17.- If an accident happens as a result of not having respected the safety measures given
here, or the safety measures in the work place as established by professional associations or by
the insurance company with relation to civil responsibility or your country’s legislation, or
caused by negligence, then the legislator will hold the machine operator responsible or, in the
case that this person could not be held responsible due to lack of training or basic knowledge,
then the personnel supervisor will be held responsible.
For all these reasons, when you are working with the Mini, please do so with caution and bear in
mind the safety measures that apply in each case (safety measures for the association of
construction professionals relative to conveyors and spraying machines).
Below you will find some brief safety instructions to be followed for the correct
use of this machine onsite.
4.1 Safety
4.1.1 Designated use
This machine has been designed and built for safe operation in accordance
with current technological levels. However the machine may present a danger if it
is used inadequately or for an unintended use or one not included in this user
manual.
Pay special attention to
this symbol in this chapter!

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4.1.2 Indication of danger
Actions that require particular care and precaution to be taken have been marked with this
symbol:
This symbol is used to indicate all those jobs in which there may be danger
to the health of personnel if the parts are handled incorrectly. Please pay close
attention to the instructions and work with extra care. You should also follow the
general indications on security and for the prevention of accidents with reference to
the building sector.
This symbol is used to indicate all those procedures where it is obligatory to
have first read the user manual. An example of one of these procedures is when it is
necessary to uncouple parts of the machine. In this case there is the risk that the
material is still under residual pressure and it could splash your eyes, so it would be
necessary to wear protective glasses.
This symbol is used to indicate all those tasks in the user manual that could cause
damage to objects. WARNING!
4.1.3 Security in the workplace
xThe machine must be checked for visible damage before each use.
Particular attention should be made to the electronic feeder cables,
plugs, couplings and pipes.
xWork to the electric panel of the machine should only be carried out
by specialised technicians or by an electrical expert, and always in
accordance with the technical rules on electricity.
xThe connection to the mains must always be protected by means of a protector switch
in case there is a fault in the current (current transformer for building sites).
xBefore correcting faults or carrying out maintenance or cleaning the machine, make
sure it is turned off at the mains switch. Unplug the machine from the mains and for
greater security hold the mains switch in place with a padlock.
xSpecial attention must be paid to the following points: WARNING!
- The protective grid on the material deposit must be screwed tightly shut!
- The mixing tube, the motor cover and feeder motor must be securely attached
to the machine!
xAll work carried out using the material pumping machine (for mortar or plaster)
should be in accordance with the general regulations on safety and accident
prevention in the building industry.

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4.1.4 Safety rules for conveyers and spraying machines.
xThis type of machine should only be used by qualified and responsible personnel
(foreman) who have been specifically appointed by building company. They should
be instructed in the handling and maintenance of the machine and be familiar with all
its workings.
xThe machine must be installed where it will be stable and secured against any
accidental movement.
xMachines running on electricity must be connected to a special socket (normally a
current transformer for building sites), in accordance with paragraph 55 of regulation
VDE 0100/5.
xThe machine must be installed where it is in no danger from falling objects or else
shielded with a protective material. The pipes must be laid in such as way that they
will not be damaged.
xIf the safety devices on the machine either activate or fail to work correctly, the
machine should be stopped until the problem has been corrected.
xBefore opening the joints on the conveying pipes or other parts of the system that are
under pressure, the foreman must make sure there is no pressure in the system.
xBlockages should be eliminated following the indications in the instructions for use.
The person in charge of eliminating blockages must position himself in such a way
that he will not be hit by the mortar coming out. There should be nobody else nearby
when this task is being carried out.
4.1.5 Protective devices for personnel
xThe building company must provide personnel with adequate means for individual
acoustic protection if the noise in the workplace reaches over 85 dB(A).
xAll personnel must use this acoustic protection for levels of 90 dB(A) or higher.
xProtective glasses must be provided for the task of eliminating blockages. Protective
glasses are considered to be glasses with a frame that meets part 2 of the DIN 58 211
regulation and lenses that meet page 5 of the Din 4647 regulation.
4.1.6 Other suggestions
xIt is recommended that only original spare parts and accessories are used.
xNo modifications should be made to the original machine.

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5 Start-up
5.1 Installation of the machine
The Mini pump must be installed on the flattest surface possible and secured by
activating the two wheel brakes. The compressor and driving motor connectors must be
connected to the electricity sockets supplied for this purpose on the electronic control panel.
There can be no confusion because the connecting sockets and cable lengths are different.
The main motor switch must be placed in the “0” position. The additional cleaning
connection and release valves on the water valves must also be closed. Also check that the
material stop valve is closed.
5.2 Electricity supply point
Use only a special three-pole 3*2.5 mm2section and 1 KV electricity cable for
construction work. In order to avoid voltage losses, the electricity cable must always be unreeled
completely!
To ensure proper operation of this machine, it is very important that the power supply is
230 V at the machine’s power supply inlet. WARNING!
5.3 Water supply point
The water hose, which is resistant to creases and high pressures, must be completely
unreeled; it must have a minimum interior diameter of 3/4”. It must be connected to a suitable
tap and any air inside the hose must be eliminated. The water pressure gauge needle must
indicate a minimum pressure of 3.5 bars; this can be achieved by installing a pre-fitted pump to
increase water pressure between the water supply network and the machine.
5.4 Product hose placement and lubrication
The Mini pump is equipped with an original factory-supplied hose fitted with quick-
fitting couplings. The hose distance must be as short as possible. We recommend moistening or
lubricating the hose interior to prevent it from becoming blocked. To do so, a coupling is
connected to the machine to establish the hose cleaning connection; the hose is filled with water
and the water is allowed to run out of the end.
5.5 Connection of the air hose and spraying lance
Unreel the 3/8” air hose, which is resistant to pressure and creases, next to the product
hose and connect it to the machine air outlet. When this is done, the compressor hose must be
connected to the air pressure gauge and the connection plug to the corresponding electricity
socket on the electronic control panel. The spraying lance is connected to the other end of the air
hose and the air spray gun is adjusted (the diameter of the product hose nozzle is equal to the
distance of the air gun on the spraying lance).
5.6 Checking the rotation direction
- Lower the head motor and remove the beater. Put the motor back in its vertical
position.
- Disconnect the water hose from the mixing tube.
- Activate the head motor, compressor and, finally, main switch (red and yellow).
- The motor must rotate in the direction indicated by the arrow on the protective part of
the motor fan (anti-clockwise, i.e. to the left).

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- If it rotates in the wrong direction, the phases on the lower part of the electricity input
plug must be rotated.
WARNING! If the plug is changed or a main cable extension cable is not used, check
the rotation direction again.
5.7 Loading of air into the water regulator
Disconnect the water hose from the mixing tube and leave it in the bucket. Press the
electrovalve release button until no bubbles appear in the flow metre.
5.8 Adjustment of the water regulator
While the water valves are being loaded with air, regulate the desired amount of water by
pressing the electrovalve release button. Open the water control valve until the buoy reaches
approximately 400 l/h.
Note: The amount of water actually required by the product that is being mixed is
regulated later by the machine during operation until the desired product consistency is
obtained.
5.9 Pressure test of the perpetual screw pump (stator- sleeve)
The Mini pump is equipped with a maintenance-free pumping element (according to
customer’s request); its pumping pressure is optimally adjusted to the conditions at the work site
(according to both material consistency and composition and hose length and diameter).
Normally, the pumping elements not requiring maintenance are used until they reach their limit
of wear, i.e. until the supply flow is reduced substantially or the consistency of the material
ranges between thick and fluid. In these cases, the pump elements must be replaced.
If the wear of the maintenance-free set of pumps has to be controlled or if retensionable
sets of pumps are used, pump pressure is calculated as follows:
WARNING! The water hose is connected to the upper connection of the mixing tube,
the pump motor is lowered and the beater is removed from the mixing chamber. Activate
the electrovalve release button and let water enter the mixing chamber until it covers the
top of the perpetual screw (rotor).
In order to ensure that the water level in the mixing chamber does not continue to rise
while the pressure is being adjusted, disconnect the water hose from the mixing tube.
The process described below would be performed in the case with the option of the
pressure regulator:
After placing the mixer back in the tube and repositioning the head motor fixed with the
safety valve, connect the hydraulic pressure regulator to the sleeve outlet with the release valve
open. After briefly starting the head motor (approximately 1 or 2 seconds), the air is eliminated
from the pressure regulator. The release valve is then closed and the head motor is reactivated for
a few seconds; at the same time, monitor the oscillation of the pressure valve indicator needle.
The upper oscillation value of the pressure valve corresponds to the regulated pressure of
the pump!

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Hydraulic check rule: if flat plaster is applied using a Dn 25 pipe measuring up to 10 metres in
length, the pressure valve must read 15 bars.
5.10 Amount of water required
Immediately before starting the work, make sure that sufficient water is in the mixing
chamber (covering the rotor head). If this is the case, introduce water into the mixing chamber
following the instructions described in the previous point; if this is not done, dry material may
penetrate the sleeve.
WARNING!:Failure to comply with the foregoing will lead to premature wear and
tear or even breakage of the sleeve in a fraction of a second when the pump motor is
started with dry material and without water.
5.11 Machine start-up
Activate the main switch and start the pump motor by pressing the green start button. Set
the motor speed using the speedometer inside the control panel display. Regulate the speed
according to the machine’s input voltage; if the voltage is low (around 200-210 V), we
recommended setting the speed to approximately speed position Nº 4 i.e. 40 Hz. working speed.
Use the control valve to regulate the consistency of the material by adjusting the water
flow until you achieve the desired working conditions.
Stop the main motor and connect the product hose to mixing tube outlet. Control the
consistency of the material at the end of the hose. With the machine stopped, connect the
spraying lance to the product hose. Regulate the water level until you achieve the desired
consistency.
WARNING!:When regulating the amount of water, bear in mind that any changes in
consistency due to hose length will only be reflected in the corresponding delay that occurs in
the spraying lance.

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5.12 Spraying
The material (mortar or plaster) is applied continuously and horizontally, line by line. The
prior condition necessary for continuous work is that there must be sufficient material in the
hopper at all times. The level of dry material in the hopper must never fall below the perpetual
screw pump axle.
Continuous spraying may be achieved by using the correct rubber nozzle on the spraying
lance (diameter 14 mm.). The distance between the spraying lance and the wall must be
maintained at between 15 and 30 cm. The pump must be placed in a position that ensures the
shortest possible hose length (10 metres). Hose extensions produce greater pressure in the
transportation of the hose and consequently greater wear and tear of the pump parts.
6 Speed Variator
This machine incorporates a speed variator or single-phase frequency converter (2.2 kW).
The incorporation of this device on the Mini pump provides a machine input power of 230 V,
allowing the pump’s main motor to operate at 230 V (three-phase).
When the variator is powered on the power elements together with a certain number of
control components are connected to the power supply.
Do not touch these elements: they are extremely dangerous.
After disconnecting the variator power, wait for one minute before reusing the device.
This time corresponds to the electric discharge time constant of the condensers.

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6.1 Commissioning of the DF-DV51 variator

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Fault correction

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