18
19
open the tie-rod, remove the inspec-
tion plugs of the delivery valve
(41), remove the rubber
ball valve (42), and pour
some slurry in the valve
body (43).
Then place back the ball
valve and the inspection
plug, finally close tight the
tie-rod and start again.
Put the by-pass lever (20)
in horizontal position: the
machine starts to pump
slurry into the hoses.
Before the slurry is over
pour some prepared
mortar from the mixer to
the vibrating sieve. (S version)
Version with fixed mixer (MF)
Activate the mixer using the control lever (36) and
prepare the mortar.
Load the mixer with sand, cement/
lime and water.
Discharge the mix
on the vibrating
sieve opening the
discharge door with the indicated
lever (44).
The slurry starts coming out of the
spraygun and soonafter the mortar will follow.
Now the machine is in working conditions and can be
stopped using the air cock on the spraygun (15).
Usually, when the machine is
on
stand-by,
the
operator
has to move the by-pass
lever
(20)
in
recycling
position
(vertical).
At the next start up the before mentioned lever has to be
placed in pumping position (horizontal).
In case of long stops, open the discharge cock (38) and
place the by-pass lever in vertical position so that
the mortar can be recycled into the hopper.
Make sure that the mortar in the hopper is always
at such a level to cover the agitator. If the level is not
sufficient the pumping piston (rubber) will suffer a very
fast wear and tear due to the lack of lubrication.
The operator on the spraygun does not have to point the
spraygun towards other people.
During pumping operations the operator at the machine
should check that the
pressure gauge (45)
(positioned on top of the
pumping group) never
exceeds 20 ÷ 25 bar.
A higher pressure may
indicate a blockage in the
mortar hoses or in the
spraygun. If this happens,
stop the machine and
discharge the pressure in
the hoses turning the by-
pass lever (20) in vertical
position then remove the
blockage (page 28).
In case of blockage of the spraygun, for no reason
whatsoever you should look directly in the hole of
the deflector. The sudden exit of the blocked part
or of mortar under pressure may cause problems
to the sight.
20
36
44
20
38
15
45
42
41
43
Summary of Contents for UNI 30 D
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