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7.7.4 Delivery of the mix
1. Make sure that the dome cover is closed and the mixing unit is switched
on.
2. Set the appropriate flow rate at the levers for upper and lower air (see
Section 4.6). (See Section “Delivery of the first mixture” below).
➢ The ideal delivery pressure depends on the type of delivery. The
delivery rate must be adapted to the length of the delivery hose, the
diameter of the delivery hose and the delivery height or distance.
− Delivery to upper floors: The optimum delivery pressure is between
4 and 5.5 bar.
− Delivery to lower levels: The optimum delivery pressure is between
2 and 3 bar.
− Delivery on level ground: The optimum delivery pressure is
between 3 and 4 bar.
In most cases, a combination of different types of delivery is required. In
this case, set the pressure range with the highest value.
3. After the mixing time has elapsed (follow-up time according to the time
setting if this option has been ordered), delivery of the mix starts.
➢ The motor runs at the set speed and the compressor delivers the
maximum amount of air. The pressure rises in the air machine of
the compressor and in the mixing and delivery vessel. The
pressure in the mixing and delivery vessel and the rotating mixing
unit presses the mix through the vessel outlet into the delivery
hose. The interplay of compressed air and mixing unit conveys the
mix through the delivery hose to the discharge stand and ejects it.
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