MASTER plastering machine
11
3.6
Checking the turn direction
-
Fold down the head engine and tale out the mixing tree. Place the engine again in its
vertical position.
-
Disconnect water hose from the mixing tube.
-
Start head engine, feed engine, compressor and, in the end, main switch (yellow and red
colour).
-
The turning direction of the engines must have the direction marked by the arrows (against
the clock hands, to the left).
-
If the turn direction is wrong, start the phase inverter switch to the opposite direction.
WARNING!
If the plug is changed or we use an adaptor for the main hose, it is necessary to check
the turn direction again.
3.7
Air charge on water dose
Disconnect the water hose on the mixing tube and leave it on a bucket. Press the electric valve
opening button until no air bubbles on the flow measurer appear.
3.8 Water
dose
adjustment
While the air is loaded on the water taps, the water flow can be regulated by pressing the
electric valve opening button. Open the water adjustment key until the float has got the approximate
amount of 400 l/h.
Note:
The amount of water which is really needed for the product we are working with is
regulated later, when the machine is working, until the product consistency is reached.
3.9
Auger pump pressure test
The MASTER comes with a pump element form the manufacturer (if so requested by the
customer) which is maintenance-free and has got a pumping pressure that suits perfectly to the
building sites conditions (depending on the material consistency and composition, as well as on the
hose diameter). Normally, the elements on maintenance free pumps are used until the wear limit is
reached, that is, until the supply flow is significantly reduced or the material consistency is between
thick and fluid. In that case, the pump elements must be replaced.
If we need to check the maintenance free pumps wear, or if we use readjustable pumps (for
instance, D4-1/4, HD 25), the pump pressure will be set up as follows:
WARNING!
C
onnect the water hose to the mixing tube upper side, fold down the pump
engine and take out the mixing tree in the mixing chamber. Push the button on the electric
valve opening and let water come in until the water level covers the worm screw head (rotor).
To avoid the water level on the mixing chamber to keep on increasing while we adjust pressure,
the water hose on the mixing tube has to be disconnected.
