MASTER plastering machine
13
WARNING!
When regulating water we must bear in mind that consistency changes due to the
hose length, and will only be noticed with the corresponding delay that is produced in the spraying
gun.
3.13 Spraying
The material (mortar or gypsum) is applied constantly and horizontally, line after line. The
previous condition for a continuous work is that there is enough material at any time. The material
level inside the hopper shall not fall under the worm screw shaft.
With the appropriate kind of rubber nozzle on the spraying gun (14 mm. diameter), we obtain a
continuous spraying. The distance between a protective spraying gun and the wall must always be
between 15 and 30 cm. The place where the machine is left shall be the one where we use the shortest
hose (10 metres). Hose adaptors bring higher pressure on the hose transport, and therefore a higher
pump parts wear.
4 Interruptions
at
work
4.1 Short
interruptions
To change the machine of place, it is enough with stopping it from the lock key on the spraying
gun. This way, the head and feed auger engines are stopped at the same time. Stop the main engine
and, to prevent humidity from coming into the dry material hopper, close the material door.
WARNING!
Please bear in mind that during work interruptions, the spraying gun must be
placed always with the material nozzle downwards, as otherwise the still out coming material
will block the air diffuser.
4.2
Long work interruptions and end of work
When there are interruptions exceeding the material hardening time (end of spraying work), it
will be necessary to clean thoroughly the mixing chamber and material hoses as follows:
-
Stop the feed auger engine and close the material gate. The material left coming from the
mixing tube and the product hose is sprayed until the material consistency cannot be used
any longer.
-
Stop the head engine by turning the switch to the “0” position.
-
Take the mixing tube for the mixing tree and replace it by the cleaning tool.
-
Run shortly and repeatedly the head engine and introduce the cleaning scratch downwards
inside the mixing tube. This way, the material left inside the mixing tube disappears, and it
is pumped through the product hose.
-
Check that the material pipe has no pressure. Disconnect carefully
(turning your face aside and using protection goggles) from the pump
outlet.
