IMER BOOSTER 15 Operation, Maintenance And Spare Parts Manual page 38

15. MACHINE SHUTDOWN AND CLEANING
After pumping the last mixture, stop the agitator (Page 2 Ref. 8),
the pump unit (Page 2 Ref. 1) the grill vibrator (Page 2 Ref. 12) by
pressing the button in question, if the machine is equipped with a
set accelerant pump, stop it with the switch (Fig. 20)
Stop pumping before you disconnect the hoses!
Before slackening off the material delivery hose fitting, make
sure that no parts are moving and that there is no residual
pressure inside it.
Disconnect the delivery hose from the tank.
If you have fit the manual or hydraulic shutter (Fig. 9 Ref. 1) be-
tween the machine and the hose, close and connect it;
Open the tank evacuation hatch (Fig. 3 Ref. 1) to expel any
remaining material and then clean the tank with a jet of water.
Now start the pistons in suction mode by turning the switch (Fig.
19 Ref. 1) to the left and direct the water into the S valve's delivery
hose (Page 2 Ref. 9). Continue until clean water runs out of the
tank.
Now stop the pump and close the hatch.
Let the diesel engine idle for 2-3 minutes; then switch it off with the
ON/OFF button.
Check for residual concrete inside the tank and the S valve.
Coat the tank walls and the interior of the S valve with oil or some
other lubricant.
If necessary, cover the tank with a tarp to prevent foreign matter
falling into it.
If the pressure water cleaner is present, after connecting the
suction pipes (Fig. 22, Ref. 1) to a water supply with an adequate
flowrate (at least 25 l/min) - do not suck water from a drum -
and the delivery pipes, with the lance supplied (Fig. 22, Ref. 2), to
the connection on the machine (Fig. 22, Ref. 3), start it with the left
lever (shorter) of the distributor (Fig. 19, Ref. 3) and begin washing
operations. Make sure not to accidentally operate the pressure
water cleaner control lever during work: by turning empty it
will quickly become permanently damaged.
Never direct the water jet at other persons or towards your-
self. Never direct the water jet towards the electrical panel or
other delicate parts of the machine. Do not use the pressure
water cleaner to wash inside the pump.
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Fig. 22
16. CLEANING THE PIPES
The pipes can be cleaned in three ways: with pressurised water,
compressed air, or by suction (vertical pumping only).
In particular:
- with suction cleaning, the material in the pipe is returned to the
tank; note that the tank has a recovery capacity of around 200 l.
IMER INTERNATIONAL S.p.A.
- On the other hand, compressed water/compressed air cleaning
allows all the concrete to be used and unloaded on site.
16.1 CLEANING WITH WATER
Wet a sponge and fit it into the pipe (Fig. 23 Ref. 1). Reconnect
the pipe to the machine. Connect the sponge recovery container
(Fig. 23 Ref. 2) to the outlet of the hose using the Victaulic fitting
with gasket.
Fill the tank with water and start pumping.
The sponge may be expelled from the pipe with force,
make sure the container is of a suitable shape. In case of ob-
structions or blockages inside the pipe, the sponge does not
pass through it, so pumping must be inverted to discharge
the pressure in the pipe. Now stop the machine.
The operator must be specially instructed to do this job;
in particular, before opening a coupling, he must check for
residual pressure in the hoses and make sure that no-one is
in the vicinity. This operation must always be supervised by
an expert operator and done with the utmost caution.
During cleaning, do not allow anyone to loiter, for any
reason whatsoever, in the vicinity of the terminal hose.
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If a blockage has formed in the metal pipe, disconnect the cou-
plings and clear it with a jet of water or steel bar. If it has formed
in a rubber section, find the obstruction; the hose will be rigid at
this point. Disconnect the blocked hose and hit it with a hammer
to break the blockage up and allow the material to flow out of the
hose (Fig. 24).
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2
Fig. 23
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