IMER KOINE 4 Manual De Uso, Mantenimiento Y Recambios página 24

Prolonged shutdown can cause clogging in the material delivery
lines: in this case no material is delivered from the jet and the
pressure gauge (ref.3) indicates a higher pressure than the
normal working value.
Shut down the machine by means of the stop pushbutton (ref.1d),
position the cell wheel switch (ref.1e) to 0 and the main switch
to the opposite settings to the normal work position (the blue
lamp turns off) and press the inversion pushbutton for a few
seconds (ref.1l): the mortar pump motor rotates in the opposite
direction (the water solenoid valve (ref.13) stays closed) and
the pipelines are depressurised (the pressure gauge reads 0
bar).
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 pressure,
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 and open the mixing chamber.
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 (fig.13).
FIG.13
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 operationclean the machine
and pipelines immediately (see para.13). Also disassemble the
pump, remove the screw from the stator and clean. On completion
reassemble all components.
IMER INTERNATIONAL S.p.A.
KOINE 4/5
13. MACHINE SHUTDOWN AND CLEANING
At the end of work, stop the cell wheel and continue pumping
until the material delivery pipelines are empty.
Stop the machine by means of the pushbutton 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 (fig.14).
there is no residual pressure.
Disconnect the material pipelines from the delivery manifold.
Detach the quick connector with safety device (ref.14) and open
the mixing chamber (fig.15).
Remove the mixer and clean. Clean the mixing zone with a brush.
Insert the scraper (ref.15) as shown in fig.17 , close the mixing
chamber, turn the main switch to the correct position (blue lamp
ON) and then press the start pushbutton. Leave running for
5-10 seconds, until the mixing chamber is completely clean.
24
FIG.14
- Before disconnecting the jet or pipelines, ensure that
14
FIG.15
15
FIG.16