PFT G 54 E
Operating Instructions
09/2006
Knauf PFT GmbH & Co.KG
22
Mortar consistency
The right mortar consistency is achieved once the material on the sprayed surface merges (we
recommend applying material to wall surfaces from top to bottom). Even mixing and spraying
cannot be ensured if the amount of water is insufficient, resulting in clogged hoses and the
pumping components being subjected to greater wear.
Spraying guns and nozzles
Spraying nozzles of 10, 12, 14, 16 or 18 mm should be used, depending on the mortar
consistency. Larger nozzles reduce the projection speed and thus the rebound effect. Smaller
nozzles create a better spraying effect. It is important that the distance between the air nozzle tube
and the nozzle outlet corresponds to the diameter of the nozzle.
Interruption of work
Warning!
Observe the guidelines of the material manufacturer regarding
interruptions.
It is recommended to clean the pump prior to longer interruptions. Proceed
in accordance with page 23 “Measures at the end of work and during
cleaning”.
Every interruption of the spraying procedure results in minor irregularities of
the mortar consistency, which normalise, however, as soon as the machine
has been working for a while. Do therefore not change the water supply
each time you detect an irregularity, but wait instead until the consistency of
the material emerging from the spraying gun is correct.