Mestra BOOMERANG PRECISION Manual De Instrucciones página 10

English
IMPORTANT NOTE: You must separately calibrate it
for the 4 different types of plaster (II, III, IV and (free
material).
BASIC OPERATION
The Boomerang Precision dispenser is factory set to
dispense 100 gr of plaster and 20 ml of water.
Turn on the main switch (green light) at the rear of the
unit.
The upper display will show the grammes of powder
to be dispensed and the lower display will show the
millilitres of water.
Place a bowl to collect the mixture.
Press the START/STOP
dispense the dose selected.
OTHER FUNCTIONS
To stop the operation of the unit at any moment keep
the START/STOP
If you press the START/STOP
the unit will dispense several doses in the same
proportion
When the unit finishes the dispensing, the display will
read "0". If the alarm is on (
accoustic signal will go off after 2 minutes, which
will indicate that the plaster is already damp (see
Alarm section). To stop the alarm, just press any key,
and the unit will be ready to dispense again.
If you keep the START/STOP
few seconds when the unit is stopped, the unit will
start to dispense powder until you release the key.
Then, it will dispense the amount of water in the
proportion previously selected.
ERROR MESSAGES
Err1: No plaster.
Err2: No bowl.
SWITCHING BETWEEN MATERIALS
The Boomerang Precision dispenser allows you to
switch easily between different types of plaster or
another material. To do this:
Press the key for a few seconds.
The pilot light for selecting the material will start
flickering.
Select the material you want to work with (type II, III
or IV plaster or free ) by pressing the
short strokes.
10
key once for the unit to
key pressed
key several times,
pilot light on), an
key pressed for a
key in
Once the pilot light for the material you want to work
with is flickering, press the
seconds.
You will see that the
the key again for several seconds to confirm it.
The parameters for the selected material will be
loaded, and the dispenser will be ready for operation.
TYPES OF PLASTER AND WATER
PROPORTION
Type II: 35-45 ml of water per 100 g of plaster.
Type III: 25-35 ml of water per 100g of plaster.
Type IV: 20-25 ml of water per 100g of plaster.
For a more detailed description, follow the instructions
of the plaster manufacturer.
CHANGING THE DOSAGE
The upper display shows the amount of powder (in
grammes) to be dispensed.
The lower display shows the amount of water (in
millilitres) to be dispensed.
To change the amount of material to be dispensed
press the keys.
If the pilot light is on (fixed proportion), you will
notice that as you change the amount of plaster (g),
the amount of water (ml) will change proportionally
(see Changing the fixed plaster/water proportion
section).
If the pilot light is off (variable proportion), you
will be able to change the amount of plaster (g) and
the amount of water (ml) independently. To shift from
a display to the other, press the
To change the plaster/water proportion, see the next
section.
CHANGING THE PROPORTION
The Boomerang Precision dispenser is factory set
according to the following proportions of plaster/water:
Type of plaster
II
III
IV
(free)
To change the water proportion of a material proceed as
follows:
Select the material you want to change, as explained
in the Switching Materials section.
Press the key for a few seconds.
key for a few
pilot light is flickering. Press
key.
ml of water / 100 g of plaster
35
25
20
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