20
21
During all these operations the air cocks must
remain completely closed or open. The partial
opening will cause the stop of the machine.
In the event of an overpressure in the pumping pressure
the safety device will intervene inside the gearbox.
Take the by-pass lever (20) in recycle position (vertical)
and verify that the pressure gauge (45) shows a pressure
of 0 (zero) bar.
Stop the machine (move the key to position 0), remove
the cause of the blockage (improper mix, blockage of
the hoses or of the spraygun), and then insert again the
safety device using the proper lever (46).
Stopping the machine
While pumping the last mix, which should be more fluid,
the machine should be stopped only when the agitator
can be seen in the hopper.
At this stage close the de-
livery air cock, move the
by-pass lever to a vertical
position (20) and make
sure that the pressure
gauge (45) shows 0 bar.
Switch off the engine by
pulling the indicated head
(40) then turn the key (39)
to position 0.
Before opening a coupling of the
mortar hose or disconnecting
the spraygun, make sure that
the pressure gauge indicates a
pressure of
0 (zero) bar
and that no
pressure is
remaining in
the hoses.
The operator must be properly trained in order
to perform this operation.
Before opening any couplings, make sure that there is no
remaining pressure in the hoses and that people are not
standing close to the machine.
Only trained people can carry out the above
procedure, which may be dangerous at times.
Cleaning
• Remove the spraygun and wash it carefully, taking the
deflector apart (19).
• Make sure that the hose on the nozzle (18) is free (if
necessary clean it)
46
40
39
20
45
6.5 - WASHING AND STOPPING THE MACHINE
18
19
Summary of Contents for UNI 30 D
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