Utiform Master Instruction book

Brand: Utiform

Model: Master

Type: Instruction book

www.utiform.com departamento.té[email protected]m

Tfno. +34 96 570 29 82 Fax: +34 96 678 22 99

INSTRUCTION

BOOK

MASTER

MASTER plastering machine 1

FOREWORD

Dear customer:

Please read the instruction manual thoroughly and try to make familiar with the whole

operation and handling before starting to use your new MASTER machine. This way you will avoid

mistakes and material losses.

This machine corresponds to the most recent state in the technical advances, as well as to the

general regulations in force and the EC regulations. This is stated by the EC symbol as well as the

Declaration of Conformity enclosed to this book of instructions.

In the event the machine breaks down, or if you want to make a spare parts order or call our

After Sales Service, please contact your dealer or the seller directly.

With the aim of avoiding breakdowns caused by defective or bad quality parts, and in order not

to run the risk of loosing your right to “Manufacturers warranty”, we recommend to use only original

spare parts.

Please complete the details requested below to be aware of the most important features of your

machine. This way they’ll always be available and can be used in case you make an order. The details

to be written down can be found in the machine features plate.

MASTER

Machine number

Head engine

Feed auger engine

....................…………….......................

Type

Number

Type

Number

We keep the right to perform any technical changes to improve the machine even though they

have not been included in this manual.

Manual number............................................................................

MASTER plastering machine 2

1 Description 4

1.1 General description of the equipment 4

1.2 Technical data 6

1.3 Standard equipment 7

2 Safety 8

2.1 Use as planned 8

2.2 Danger signs 8

2.3 Safety at work 8

2.4 Mortar spraying and transporting machines’ safety regulations 9

2.5 Personal protection equipment 9

2.6 Other indications 10

3 Starting 10

3.1 Machine installation 10

3.2 Tuning of the current supply 10

3.3 Tuning of the water supply 10

3.4 Placement and lubrication of the product hose 10

3.5 Air hose connection

and spraying gun adjustment 10

3.6 Checking the turn direction 10

3.7 Air charge on water dose 10

3.8 Water dose adjustment 11

3.9 Auger pump pressure test

(stator or rotor) 12

3.10 Amount of water needed 12

3.11 Dry material load 12

3.12 Starting the machine 12

3.13 Spraying 13

4 Interruptions at work 13

4.1 Short interruptions 13

4.2 Long work interruptions and end of the same 13

4.3 Stopping the machine 14

5 Service and maintenance 15

6 Breakdowns and repairs 16

7 Fittings 20

8 EC Declaration of Conformity 22

MASTER plastering machine 3

9 Anexo 24

1.4 Diagram combined

1.5 Mixing tube

1.6 Feed auger

1.7 Water system

1.8 Air system

9.6 Water pump

9.7 Compressor Meko 280

9.8 Compressor HANDY K2

9.9 Straight spraying gun and hoses

9.10 Circuit board

9.11 Fittings

9.12 Blowing hood

9.13 Circuit board tapping draft

9.14 Manoeuvre layout

9.15 Power layout

MASTER plastering machine 4

1 Description

1.1 General description of the equipment

The MASTER is an improved version of its former one, improvements which have been

carried out according to the most modern knowledge and in accordance with the latest safety

regulations. It has been designed to work smoothly with premixed dry materials of mechanical

application.

Of a simple and robust construction, its components layout allows an easy use and service, and

its legendary trustworthiness is essential features of our MASTER.

The serial mixing and transport flow of approx. 30 l/min. can be adapted between 5 and 60

l/min., depending on the need of wet material, in only a few minutes by changing the pump elements

(see page).

The Master has got a gate on the material deposit with a soft operation lock, between the dry

material container and the mixing chamber. Thanks to this gate, it is possible to open the mixing tube

without dry material coming out of the container when it is closed.

Loading MASTER can be done manually, using bags, or through a pneumatic transport system

with material coming from a silo. The blowing hood for the pneumatic load is hermetically fixed to the

machine by eccentric locks, which are adapted to the receiver hopper.

With the gate open, the dry material is transported without loss through a feed auger from the

dry material container up to the mixing chamber, where it is mixed until we get a homogeneous

material mixture. The amount of water needed to this aim can be exactly regulated using the water

dose taps, in a way that we always have the same consistency.

The feed auger pump, installed under the mixing chamber, transports the wet material through

the hose up to the spraying gun, which sprays the material over the wall to be sprayed using

compressed air. The compressed air needed is produced by a membrane compressor, located on the

MASTER frame, and it is directed to the spraying gun through a hose which has been spread out

parallel to the product hose.

The MASTER remote control is activated by closing the main air key on the spraying gun. The

compressed air resistance acts over the air pressure switch, disconnecting the head and the feeding

engine.

In case of breakdown in the water dose or of sudden net pressure drop, an additional water

pressure switch gets activated, stopping the machine immediately. For special work conditions, for

instance the use of special porous, liquid or self-levelling mortars, an electric remote control system

can be supplied.

The MASTER electric control device is equipped with a re-connection blocker, that is to say

that, if the machine stops because of lack of current or water supply, it is necessary to start the machine

again by pressing the green button.

All electric connections are installed within a hermetic distribution box to protect them against

dust and water splashing, as under the Low Tension regulations of the EEC 73/23 Directive (19.02.73),

as well as its amendments. This box is placed on such a height that it makes its operation easier.

MASTER plastering machine 5

The correct turn direction of the engines is established by an inverter switch on the control

board, which blocks the turn direction to avoid mistakes when starting.

The machine cleaning tools are found in different places of the chassis, and a big tool box is

supplied to keep tools and other parts, to allow the materials to be always accessible.

The load charge point is positioned as low as possible, to feed the machine easily. However,

for isolating materials (more volume and less weight) a supplement can be installed to enhance its

capacity and to reduce the load frequency.

The MASTER frame is equipped with four big platform revolving wheels (two of them with

brake and the other two without it), which allow an easy transport even in narrow spaces, a making the

machine to be always fix.

One of the most important MASTER features is that it can be easily dismantled into different

elements, in the way that most suits you: first, we can dismantle the complete mixing tower on the

machine chassis. Then, and to make it lighter during its transport, we unscrew the rear screws on the

feeding engine plate; to this aim use the stator turner over provided. Later we can take out the four

screws that join the hopper to the tubular chassis, discovering this way the big advantage of the new

MASTER against its counterparts in the market:

An easy to dismantle hopper on the tubular chassis and only in one go.

This way we can have a robust and stable machine completely dismantled and taken into parts

to be transported in your car or to give it the use you wish to in every moment.

MASTER plastering machine 6

1.2 Technical data

Machine type........................................................................ MASTER.

Power ...................................................................................Three-phase feeding engine 1’1 Kw.

Three-phase head engine 5’5 kw.

Service voltage.....................................................................400 Volt./500 Hz.

Connection to the network ...................................................CEE 3P+N+T 32 A./6h.

Control voltage..................................................................... 42 Volt./50 Hz.

Current intensity................................................................... 25 Amp.

Kind of spiral pump .............................................................(under customer’s reference)

Flow .....................................................................................5 to 30 l/min. (*)

Standard equipment 22 l/min. approx.

Pumping pressure.................................................................Max. three bars (*)

Pumping distance .................................................................up to 40 mts (*)

Compressor’s performance .................................................. 220 l/min. approx.

Maximum air pressure ......................................................... 3’5 bars

Head engine power...............................................................5’5 Kw.

Feed auger engine power .....................................................1’1 Kw.

Amount of water needed......................................................3 bars

Coupling for water entry......................................................Geka

Loading heigth .....................................................................1010 mm.

Width.................................................................................... 660 mm.

Length ..................................................................................1.420 mm.

Total heigth ..........................................................................1.540 mm.

Weight..................................................................................212 Kg. approx.

(*) Depending on the kind of material, its consistency and hose length.

MASTER plastering machine 7

1.3 Standard equipment

- 1 Membrane compressor 220 l/min. approximately.

- 1 water electric pump 380 Volt.

- 1 Tool box

- 1 Straight spraying gun 25 mm. with gun cone.

- 1 Standard mixer

- 1 Cleaning tools (turner over, bar and cleaning bar)

- 1 Pick handle

- Adjustment keys (two fix plain keys, 1 star key, 1 vase plastic key pressure regulator,

circuit board key)

- 2 rubber cleaning balls  35 mm.

- 10 metres air hose Dn 25 3/8” mm with coupling.

- 1 EEC Certificate of Conformity

- 6 months warranty

- Instruction book and machine spare parts list

Recommended equipment

- 1 stator at choice

- 1 rotor

- 10 metres product hose Dn 25 mm with coupling.

- 5 metres water hose ¾” + absorption valve.

- 25 metres electric hose 5x2’5 mm2 with base.

- 10 metres air hose Dn 25 3/8” mm with coupling

Optionally:

- 1 Pressure switch with manometer

- Hopper extra adjustment for a higher capacity.

- Complete blowing hood + probe.

MASTER plastering machine 8

2 Safety

2.1 Use as planned

This machine has been designed and built for a safe operation under the

current technical levels. However, some danger may arise from the machine if a

wrong use is made of it, or if used for a different purpose than indicated of out of the

operation instructions.

Pay attention

to this sign in this chapter!

2.2 Danger signs

Actions needing special care and caution are specially marked:

This sign marks in this book all works which can be dangerous for the worker's

life or health in case of a wrong use of the parts. Follow the instructions with special

care and work with caution. Besides, all general safety and accidents prevention

regulations for the construction field should be observed.

With this sign all operations where it is compulsory to read the instruction book.

These, for example, are necessary if parts of the machine are dismantled and there

might be a possibility that the material under pressure which is left spits to your eyes,

in which event special protective glasses should be used.

With this sign all works which can mean a risk for objects are marked in this book:

WARNING!

2.3 Safety at work

xThe machine shall be controlled every time before starting it against visible

damages. Particular attention should be paid to the electric cables, plugs,

couplings and product hoses.

xWorks on the machine circuit board shall only be performed by the After Sales staff or by

an electrician expert, always according to the electricity technical regulations.

xThe network connection has to be always protected by the protection switch for default

current (building sites electricity supplier).

MASTER plastering machine 9

xBefore eliminating operation breakdowns and performing cleaning and maintenance works,

please switch off the MASTER from the main switch, unplug it and for a higher safety,

fasten the main switch with a padlock.

xSpecial attention shall be paid to the control of the following parts: WARNING!

- The protective grid on the material deposit must be firmly screwed!

- The mixing tube, the engine cover and the feed auger engine must be fixed to the

machine!

xWhen working with the plastering machine (gypsum or mortar), all general safety and

accidents prevention regulations for the constructions field must be observed.

2.4 Regulations on machinery to transport and spray mortar.

xThe machines can only be operated by trained and reliable persons (heads of staff), who

have been appointed by the employer and who are trained on the operation and maintenance

of the machine and are made familiar with it.

xThe machines must be placed on a stable surface and must be secured against unexpected

movements.

xThe machines which need to be started electrically are connected to a special current point

(normally the building site current supply) as under the rule VDE 0100/5.73, paragraph 55.

xThe machines must be placed either outside danger areas on high working places, or

protected by roofs on places where objects might fall. Product hoses must be laid in a way

that they cannot be damaged.

xWhen the machine safety devices fail, their operation must be stopped until the breakdown

is repaired.

xBefore opening the transport pipes’ joints or other parts of the pressure system, the person

in charge of the operation of the machine shall make sure that there is no pressure left on

the system.

xObstructions must be eliminated following the operation instructions. People eliminating

obstructions shall be careful not to be near places where the out coming mortar could reach

them. No persons should stop near the machine.

2.5 Personal protection equipment

xThe employer shall provide with the necessary means for an acoustic protection, if the

evaluation level on the building place is higher than 85 dB (A).

xThe workers shall use the acoustic protection means from an evaluation level of 90 dB (A).

xTo eliminate obstructing elements protective goggles must be worn. Protective goggles are

those which frame correspond to the DIN 58 211 rule, part 2, and safety lens to the rule

DIN 4647, page 5.

MASTER plastering machine 10

2.6 Other indications

xIt is recommended to use only original spare parts and fittings.

xAny modification on the original equipment is not admissible.

3 Starting

3.1 Machine installation

The MASTER must be placed over a flat surface, and must be fastened through the two brakes

on the wheels. The compressor connection points and the starter engines are connected through the

current bases on the circuit board. It is impossible to get confused, as connectors have different colours

and length.

The feed auger switches and the main switch shall be placed on the “0” position. The additional

cleaning connection and the evacuation keys on the water taps must be closed. We shall also check if

the material gate is closed.

3.2 Tuning of the current supply

Use only a 5 poles network cable, with building quality section 5*2’5 mm2 and 1 KV. To

avoid any voltage losses, the network cable must always be completely unwound!

WARNING!

3.3 Tuning of the water supply

The folds and high pressure resistant water hose must be completely laid out, and must have a

minimum internal diameter of 3/4”. It has to be connected to the appropriate water tap and has to be

released of any air. The water manometer hand must indicate a minimum of 3’5 bars, which is

obtained by installing a pump, already incorporated, which increases water pressure between the

network and the machine.

3.4 Placement and lubrication of the product hose

The MASTER comes already with an original manufacturer’s product hose and its

corresponding couplings. The hose distance must be as short as possible. It is recommended to

moisten or lubricate it internally, to avoid obstructions. To this effect, a coupling for the hose cleaning

connection is connected to the machine, which fills the hose with water and throws it out at the end.

3.5 Air hose and spraying gun connection

The 3/8” air hose is spread out to protect is against pressure and folds, and parallel to the

product hose, to be finally connected to the machine water outlet. When doing this, we must make sure

that the compressor's hose has been connected to the air pressure switch and its socket to the

corresponding network power point on the circuit board. At the other end of the air hose, the spraying

gun is connected and the air diffuser adjusted (the product nozzle diameter corresponds to the air

diffuser distance on the spraying gun).

MASTER plastering machine 11

3.6 Checking the turn direction

- Fold down the head engine and tale out the mixing tree. Place the engine again in its

vertical position.

- Disconnect water hose from the mixing tube.

- Start head engine, feed engine, compressor and, in the end, main switch (yellow and red

colour).

- The turning direction of the engines must have the direction marked by the arrows (against

the clock hands, to the left).

- If the turn direction is wrong, start the phase inverter switch to the opposite direction.

WARNING! If the plug is changed or we use an adaptor for the main hose, it is necessary to check

the turn direction again.

3.7 Air charge on water dose

Disconnect the water hose on the mixing tube and leave it on a bucket. Press the electric valve

opening button until no air bubbles on the flow measurer appear.

3.8 Water dose adjustment

While the air is loaded on the water taps, the water flow can be regulated by pressing the

electric valve opening button. Open the water adjustment key until the float has got the approximate

amount of 400 l/h.

Note: The amount of water which is really needed for the product we are working with is

regulated later, when the machine is working, until the product consistency is reached.

3.9 Auger pump pressure test

The MASTER comes with a pump element form the manufacturer (if so requested by the

customer) which is maintenance-free and has got a pumping pressure that suits perfectly to the

building sites conditions (depending on the material consistency and composition, as well as on the

hose diameter). Normally, the elements on maintenance free pumps are used until the wear limit is

reached, that is, until the supply flow is significantly reduced or the material consistency is between

thick and fluid. In that case, the pump elements must be replaced.

If we need to check the maintenance free pumps wear, or if we use readjustable pumps (for

instance, D4-1/4, HD 25), the pump pressure will be set up as follows:

WARNING! Connect the water hose to the mixing tube upper side, fold down the pump

engine and take out the mixing tree in the mixing chamber. Push the button on the electric

valve opening and let water come in until the water level covers the worm screw head (rotor).

To avoid the water level on the mixing chamber to keep on increasing while we adjust pressure,

the water hose on the mixing tube has to be disconnected.

MASTER plastering machine 12

The process below would correspond to the pressure checker option:

After having put the mixer into the tube, having put the head engine into position and locked it

with the side lock, the hydraulic pressure checker is connected to the stator outlet using the open

evacuation key. Running shortly the head engine (1 or 2 seconds approx.), the pressure checker is air

emptied. Then, the evacuation key is closed and the head engine is started again for some seconds,

observing at the same time the manometer indicating arrow.

The upper fluctuation value on the manometer is the pump regulated pressure!

If the pump pressure needed is exceeded or not reached, it can be fixed by loosening or

fastening evenly the three fastening screws of the stator if readjustable stators are used.

Hydraulic check rule: if we work with gypsum rendering using a Dn 25 hose up to 10 metres

long, the manometer must indicate 25 bars. For every extra hose metre we have to add one bar until a

maximum of 35 bars (for example, 15 metres hose=30 bar pressure).

When working with cement or lime plaster, or when using thicker hoses, the said value will be

reduced from 3 to 8 bar. After having fastened the pump, the evacuation key of the pressure checker is

opened to disconnect it and connect later a mixing water hose on the upper connection of the mixing

tube.

3.10 Amount of water needed

Just before starting to work, it is necessary to make sure that there is sufficient water on the

mixing chamber (the rotor head is covered). If needed, we will add water to the mixing chamber as

indicated on the previous paragraph, as on the contrary we run the risk of the dry material coming into

the stator.

WARNING! The non-fulfilment of what previously indicated can cause an early wear of the

stator or even its breakdown just in second’s time, as we start the pump engine using dry

material without water.

3.11 Load with dry material

After being sure that the blocking door between the dry material hopper and the mixing tube is

closed, the material deposit is filled in with dry material from the building site.

3.12 Starting the machine

The feed auger switch and the main switch are activated, and then the pump engine is started

using the starter button (green). Open at one the material door and regulate the material consistency by

adjusting the water flow with the regulation valve until the working conditions are achieved.

Disconnect the pump and join the product hose to the mixing chamber outlet. Control the material

consistency on the hose end. With the machine out of order, the spraying gun is connected to the

product hose. Rectify the water regulation until the consistency required is achieved.

MASTER plastering machine 13

WARNING! When regulating water we must bear in mind that consistency changes due to the

hose length, and will only be noticed with the corresponding delay that is produced in the spraying

gun.

3.13 Spraying

The material (mortar or gypsum) is applied constantly and horizontally, line after line. The

previous condition for a continuous work is that there is enough material at any time. The material

level inside the hopper shall not fall under the worm screw shaft.

With the appropriate kind of rubber nozzle on the spraying gun (14 mm. diameter), we obtain a

continuous spraying. The distance between a protective spraying gun and the wall must always be

between 15 and 30 cm. The place where the machine is left shall be the one where we use the shortest

hose (10 metres). Hose adaptors bring higher pressure on the hose transport, and therefore a higher

pump parts wear.

4 Interruptions at work

4.1 Short interruptions

To change the machine of place, it is enough with stopping it from the lock key on the spraying

gun. This way, the head and feed auger engines are stopped at the same time. Stop the main engine

and, to prevent humidity from coming into the dry material hopper, close the material door.

WARNING! Please bear in mind that during work interruptions, the spraying gun must be

placed always with the material nozzle downwards, as otherwise the still out coming material

will block the air diffuser.

4.2 Long work interruptions and end of work

When there are interruptions exceeding the material hardening time (end of spraying work), it

will be necessary to clean thoroughly the mixing chamber and material hoses as follows:

- Stop the feed auger engine and close the material gate. The material left coming from the

mixing tube and the product hose is sprayed until the material consistency cannot be used

any longer.

- Stop the head engine by turning the switch to the “0” position.

- Take the mixing tube for the mixing tree and replace it by the cleaning tool.

- Run shortly and repeatedly the head engine and introduce the cleaning scratch downwards

inside the mixing tube. This way, the material left inside the mixing tube disappears, and it

is pumped through the product hose.

-Check that the material pipe has no pressure. Disconnect carefully

(turning your face aside and using protection goggles) from the pump

outlet.

MASTER plastering machine 14

- Clean, dry and place the mixing tree again after having taken out the cleaning tool. When

the mixing tree is wet, the dry material gets stuck to it when it starts and cause breakdowns.

- Take out from the spraying gun the rubber nozzle and clean it with water.

-Connect the cleaning adapter to the product hose and introduce a rubber ball. This ball is

impelled by the water force through the hose, cleaning it. The rubber ball remains on the

spraying gun diffuser.

- After having closed the cleaning connection, disconnect the spraying gun from the hose and

this from the cleaning connection.

WARNING! So that nothing comes into the hose, join both couplings on both ends of the

hose when they still unwound. This way we avoid breakdowns caused by external reasons.

-Once the air diffuser has been taken out of the spraying gun, we can move the rubber ball

away. The air diffuse will be cleaned using the pick handle and water. The spraying gun is

cleaned with water. Special attention is to be paid to the cleaning of the nozzle, and that it

doesn't get pressed by the material pressure coming from the spraying gun.

-In longer work interruptions, and at least when finished working, the water has to be

released from the dose, especially by frost hazard (cold areas). We only need to open the

evacuation keys. Besides, we must blow air inside the water taps, to which aim we connect

the compressor to the machine water inlet, the water hose is disconnected from the mixing

tube, and with the evacuation keys open, the air is blown using the push button of the

electric valve. The compressor is connected to the main switch.

WARNING! If water is released in summer or winter, we will find no surprises because of

frost!

-When working with gypsum rendering, it is necessary to clean at least once a day the pump

opening. If not so made, a material deposit is created on the pump outlet because of a

higher pressure and, as a consequence, a bigger wear of the pump parts. Loosening both

fastening screws, the mixing tube stator support is easily taken into pieces to be able to

clean it thoroughly.

- Cleaning the dry material hopper is only necessary if we are working with a different dry

material or when the machine is stopped during a long time.

4.3 Stopping the machine

If the MASTER, for instance in winter, must be stopped for a long time, it is recommended to

unscrew the stator from the rotor, apart from the cleaning steps described before. This way we avoid

the stator outline to get deformed and the rotor to get stuck.

MASTER plastering machine 15

5 Service and maintenance

In all maintenance and repair works we must make sure that the machine cannot get started

unexpectedly (unplug the network supply).

The MASTER has been designed to need a minimum maintenance. However, to ensure its

perfect operation, the mixing tube, the mixing tree (mixer), the feed auger, the material deposit and the

vent hole shall never have any hardened material left.

The bronze fitting of the feed auger shall never be lubricated or moistened. It shall be replaced

if necessary.

The circuit board must be dry and without dust inside. If needed, the dust on the circuit board

can be hovered once the plug has been switched off. It is not recommended to blow compressed air, as

the dust raised is deposited on the connection contacts and they might remain useless.

The gear boxes are lubricated for their whole operating life. If grease came out of them, it

should be replaced with ENERGREASE or a similar lubricating substance. Then, we shall pay

attention not to exceed the limits indicated.

The thimble filter in the machine water inlet shall be cleaned daily before starting to work and

the filer on the pressure reducer, once a week.

WARNING! When assembling the filter vase, we must pay attention that the joint is

correctly settled.

So that the air diffuser can always move inside the spraying gun carcass, it must be slightly

lubricated once the cleaning is finished.

Before starting to work in electric devices, unplug the machine from the net.

We should take out from time to time the electric connectors from the circuit

board, and lubricate slightly the contacts. This way we preserve the good operation of

the connectors and we prevent them from burning.

We should take out and shake the filter on the membrane compressor sucking in side and the

opposite one, at least twice a week, when cleaning the inside and every 14 days when cleaning the

outside. Then, we shall place the filters with the rough and soft surface outwards and with the thin and

hard surface inwards.

MASTER plastering machine 16

6 Breakdowns and corrections

The MASTER breakdowns are eliminated in a few operations. When repairing them, it is

essential to observe the following steps:

1. Before opening the circuit board door, it must be switched off!

2. When working with mobile parts close the main switch or unplug the machine from the net!

3. Works on electric control devices and taps shall only be made by the specialized staff of the

Technical Service!

BREAKDOWN REASON REPAIR

The machine does not

start

Current fails

Engine guard

Insufficient water pressure

Check network cable and electric connectors.

Check 35 A. delay fuses on the building site supply

board.

Press red buttons on the circuit board.

Increase water feed at least up to 3 bars and use

eventually a pump to increase pressure.

The feed engine

starts, but not the

pump.

Current supply fails

The engine protection

switches are disconnected.

Connect the engine plug to the current supply on

the circuit board.

Press red buttons on the circuit board.

The pump engine

starts, but not the feed

engine.

Current supply fails

The engine protection

switches are disconnected.

Connect the engine plug to the current supply on

the circuit board.

Press red buttons on the circuit board.

The machines works

shortly and then

stops.

Water is lacking because

the thimble filter is dirty.

The hose is obstructed.

Insufficient water dose.

Control and eventually clean the filter.

Check water feed hose (3/4” diameter) against

transverse section narrowing (for instance folds).

Use other water doses with a bigger feed transverse

section or use water barrel with tank.

MASTER plastering machine 17

The pump engine

stops after the

machine has started.

The engine protection

switch has reacted because

the stator is too tightened.

Material remains blocking

the pump.

Pump is blocked because it

worked dry.

Loosen a bit the stator fastening screws and loosen

the worm auger with the turning tool with the

engine stopped.

Dismantle the maintenance worm pump, clean it

and assemble it again.

Control water entry in the mixing tube and

eventually loosen the worm with the turning tool

and start with sufficient water.

The feeder stops

suddenly.

The engine protection has

reacted because:

The bearing gasket is

defective.

An object is blocking the

feed auger.

When the failure is solved, press the engine guard.

Replace bearing gasket.

Take the object out of the material deposit.

The machine stops

while working or

cannot be started

form the spraying gun

after a work

interruption.

Power cut

Lack of water

Aid diffuser blocked

Restore current supply and start the machine from

the pump control (connection block).

Restore current supply and start the machine from

the pump control (connection block).

Stop the machine from the pump control and clean

the air diffuser with the pick handle.

The water level

increases on the

mixing tube with the

machine working.

The turn direction is wrong

There is too much water

The pump pressure (stator)

is too high.

The pump parts are worn.

The material hose is

blocked.

Change position of the manual phase inverter on

the circuit board.

Regulate water slowly by reducing it until we get

the consistency wanted.

With readjustable pumps: adjust stator pressure

depending on material kind and consistency, as

well as the diameter and hose length.

Readjust stator pressure by fastening screws and

readjust material consistency. Eventually replace

stator and rotor. With maintenance free pumps,

assemble new parts and then use the pump with a

higher feed pressure.

Eliminate obstruction in the hose.

MASTER plastering machine 18

Material consistency

too liquid or varies

irregularly.

Insufficient feed of dry

material.

Too much water flow.

Material gate is not open or

not completely open.

The mixing chamber

opening is obstructed.

The breather is obstructed.

The mixer has got material

stuck.

Fill in with dry material the material deposit (the

dry material level must never be under the shaft

level).

Regulate water slowly, reducing it.

Open completely the material gate.

Clean the way between the material deposit and

the mixing tube.

Stop the machine from the main switch, open

horizontally the mixing tube and clean the

breather of the material deposit and the mixing

tube.

Stop the machine from the main switch, open

horizontally the head engine, take the mixer out,

clean it, and take it out and in again.

The material comes

out regularly with too

thick or too thin

consistency.

The stator pressure is not

regulated correctly.

With readjustable stators, the best stator pressure

is regulated as follows:

a) Fill in with water up to 10 cm. The clean

mixing chamber and dismantle the water hose.

b) Join to the stator outlet the hydraulic pressure

checker with the evacuation key open, and

empty the air in by starting that stator shortly.

Close the evacuation key.

c) Start again and shortly the pump. For gypsum

rendering works and 10 mts. material hose DN

25, the manometer must indicate 25 bar

approximately.

d) If the 25 bar is not reached, fasten slightly and

evenly the stator screws and repeat pressure

test.

e) When using longer material hoses, a higher

pressure is needed (1 more bar per metre) up

to 35 bar maximum.

f) For materials made of cement and lime we can

have from 3 to 8 bar.

MASTER plastering machine 19

The pump parts are worn.

The stator outlet is

obstructed.

With readjustable pumps: readjust pump pressure

as described before and readjust material

consistency. If an immediate improvement is not

noticed, replace pump parts.

With maintenance free stators: replace both pump

parts. To this aim, the new rotor is introduced

turning it with soap into the new stator, and the set

is assembled with the fastening screws slightly

loosened.

Dismantle and clean the stator outlet.

The material is no

longer sprayed.

Obstruction in the material

hose or spraying gun.

Stop the machine immediately!

To eliminate the obstruction, take as much

precautions as possible. Use protective goggles,

you can get hurt. Find the obstruction by touching

the hose. Reduce pressure on the material hose by

starting shortly the stator rear gear, and check that

there is no pressure on the hose manometer.

Disconnect carefully the material hose from the

stator outlet (look aside) and take the obstruction

out using water and a cleaning hose. Then, clean

thoroughly the material hose and spraying gun.

The water rises on

the mixing chamber

with the machine

stopped.

The electric valve is

broken down.

Unscrew the upper part of the electric valve and

take it away carefully, as it has got springs inside.

Clean the control drill and membrane and

assemble the electric valve again.

It is not possible to

stop the machine

with the pneumatic

control and/or the

compressor does not

stop in work breaks.

The air hose has got a leak.

The compressor is

defective.

The air pressure checker is

not correctly fastened.

Check the hose water tightness and coupling

connections, and replace defective parts.

Check compressor pressure on the water inlet

manometer by coupling it to the compressor. If

there is not a minimum of 3 bars, the compressor

must be repaired on the After Sales Service.

Have the pressure switch checked by the After

Sales Service and eventually, readjust it (start=1’1

bar; stop= 2’5 bar)

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Utiform Master Instruction book

Brand: Utiform

Model: Master

Type: Instruction book

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Utiform Master Instruction book

Utiform Master Instruction book

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