IMER KOINE 3 Manuel De L'utilisateur page 28

THERMAL CUT-OUT PROTECTION:
- The water pump and compressor are protected by a
thermal cut-out inside the pressure switches connected to
the inverter panel. As well as the panel thermal cut-out, the
mixer motor also implements a number of safety levels, as
indicated on the display.
ERROR MESSAGES (SHOWN ON PANEL DISPLAY):
- The error messages are shown on the inverter panel
display when specific situations arise:
- ERR00: Phase dispersion of current surge on inverter module
- ERR01: Thermal cut-out on dissipater
- ERR02: Motor thermal cut-out
- ERR03: Not used
- ERR04: Motor temperature too high (on the basis of motor heat
dissipation)
- ERR05: Power supply voltage too low.
Note: Refer to the tableTroubleshootingon page 10, for further
information.
12. OPERATION
- The hopper safety grid must be fitted and secured at all
times.
Never place materials other than premixed dry materials in the
hopper.
- Removal of the hopper grid causes shutdown of the ma-
chine moving parts.
If this occurs, the grid must be refitted and the main switch
must be reset to O to enable machine restart .
- Wear envisaged personal protection devices before
starting work
Different diameters of deflector are available (10,12,14,16,18 mm):
the smaller deflectors enable improved nebulisation, and the
larger ones are more suited to materials with a larger particle size.
For standard plastering materials the deflector with 14 mm hole
is used.
However, it is important to measure the distance of the nozzle from
the outlet so that it is the same as the diameter of the deflector.
If no water is delivered, the machine shuts down.
Before restarting the machine, identify the cause of the problem:
valve closed, delivery hose bent, tank empty, clogged filter.
Interruptions exceeding 30min should be avoided.
Prolonged shutdown can cause clogging in the material delivery
lines: in this case no material is delivered from the jet and the
pressure gauge indicates a higher pressure than the normal
working value.
Shut down the machine by setting the main switch to 0.
Locate the point of clogging in the hose
and remove by tapping the pipeline with a mallet.
- If necessary, disconnect the jet or open the pipeline
couplings, checking previously if any residual pressure is
present.
The material pressure gauge must indicate 0 bar and the
pipelines, excluding the clogged sections, must be flexible.
The personnel assigned for this task must be specially trained
in these procedures.
In the event of any doubt as to the presence of residual pres-
sure, never open the couplings.
Reconnect the pipelines and spray jet, set the main switch to the
correct position (the blue lamp illuminates) and restart the machine.
- Do not move the machine with the hopper full.
If the material delivered is alternately hard and soft this may
indicate a worn pump. To replace the pump, proceed as follows:
release the handle on the left of the hopper unit. Insert the tube
wrench on the end of the mixer and unscrew until the screw inside
the stator is released. Close the mixing chamber, tilt and lock in
the lifted position, remove the material delivery manifold and fit a
new screw-stator unit.
To insert the screw in the stator, use the lubricant spray available
from IMER. Never use mineral oil or grease for screw assembly
as this may damage the stator. Avoid all types of benzene.
In the case of a power failure during operation promptly wash the
IMER INTERNATIONAL S.p.A.
KOINE 3
machine and pipes. Also disassemble the pump, remove the screw
from the stator and clean. On completion reassemble all components.
13. MACHINE SHUTDOWN AND CLEANING
At the end of work, continue pumping until the hopper and material
delivery pipelines are empty.
Stop the machine and set the main switch to 0.
Open the jet valve, detach the jet and clean thoroughly, cleaning
the nozzle with the special tool supplied (as shown below).
there is no residual pressure.
Disconnect the material pipelines from the delivery manifold.
Detach the quick connector with safety device and open the mixing
chamber of the hopper unit.
Remove the mixer and clean. Clean the mixing zone with a brush.
Insert the scraper, connecting it to the coupling with the gearmotor,
Stop the machine and remove the scraper; refit the clean mixer.
Proceed with pipeline cleaning.
Insert a washing sponge (see spray jet kit) at the start of the pipe-
line, connect the material delivery hose to the mortar hose-water
hose coupling, and then connect the latter to the auxiliary water
valve. Insert the water pump and open the auxiliary water valve
until the washing sponge comes out from the other end.
Repeat the operation until the pipeline is perfectly clean.
At this point, on completion of machine cleaning, turn off the
main switch, disconnect the power plug, close the water delivery
valve, open the auxiliary valve for a few seconds and detach the
delivery hose
If there is any risk of freezing, open the four valves on the water
circuit and drain all water from the circuit.
Remember to reclose the valves before restarting the machine.
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- Before disconnecting the jet or pipelines, ensure that