Imer Group KOINE 4 Handbuch Fur Bedienung, Wartung Seite 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
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(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
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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 indica-
te 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
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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
FIG.13
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
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- Before disconnecting the jet or pipelines, ensure that
there is no residual pressure.
Disconnect the material pipelines from the delivery manifold.
Detach the quick connector with safety device (ref.14) and open
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Remove the mixer and clean. Clean the mixing zone with a brush.
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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
FIG.15
FIG.16