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PFT G 5 c FU 230
19
Mortar consistency / Spraying guns and nozzles / Interruption of work
01.2005
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Knauf PFT GmbH & Co. KG
Telephone
09323 / 31-760
PO Box 60
Telefax
09323 / 31-770
D-97343 Iphofen
Internet
www.pft.de
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NOTE:
If work is done without air (e.g. when pumping flow screed), the machine is switched
on and off via 42 V remote control. For this purpose, the blind plug must be removed
from the coupling and the remote control plug connected.
Mortar consistency
The mortar consistency is correct when the material on the surface being sprayed
flows into itself forming a consistent coat (we recommend that you apply material on
wall surfaces from top to bottom). If the material is too dry, even mixing and spraying
cannot take place. There may be clogging in the hose. Pumping components are
thus subject to greater wear and tear.
Spraying guns and nozzles
Use spraying nozzles of 10, 12, 14, 16 or 18 mm, depending on the mortar consis-
tency. Larger nozzles reduce the projection speed and thus the rebound effect.
Smaller nozzles create better atomization. Note that the gap between the air nozzle
tube and the nozzle outlet should correspond to the diameter of the nozzle (see also
page 12).
Interruption of work
Follow all instructions from the mortar manufacturer when interrupting spraying work.
It is recommended to clean the pump prior to longer interruptions. To do so, see the
corresponding step on page 20 - Measures at the end of work and when cleaning.
Every interruption of the spraying procedure results in minor irregularities of the
mortar consistency. This normalizes however, as soon as the machine has been
working for a short while. So do not change the water supply each time you detect
irregularities, but instead wait until the consistency of the mortar emerging at the
spraying gun has self-adjusted.
