PFT PFT G4, Руководство по эксплуатации, Страница: 24 / 68

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The mortar consistency is correct when the material on the surface being sprayed
fuses within itself (if possible, apply to wall surfaces from top to bottom). If the water
quantity is too low, even mixing and spraying is no longer assured, there may be
blockages in the hose, and pumping components are subject to greater wear.
Depending on the mortar consistency, spraying caps of 10, 12, 14, 16 or 18 mm
should be used. Larger spraying caps reduce the projection speed, and thus the
rebound effect. Smaller spraying caps produce better atomization. It is important that
the distance between the air nozzle tube and the spraying cap opening is equal to the
diameter of the spraying cap (cf. also page 3 01 00 404).
Interruptions of more than 30 minutes should be avoided, as there is otherwise a risk
that the mortar may become hard in the pump and the hoses.
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The instructions of mortar manufacturers must be strictly adhered to.
Before longer interruptions it is advisable to clean the pump. Proceed as under point
3 01 00 421 - Measures when ending work, and cleaning.
Every interruption in the spraying process causes a slight irregularity in the
consistency of the material, but this normalizes itself once the machine has been
working for a short period. Therefore, do not change the water supply quantity at every
irregularity - instead, wait until the consistency of the material coming out of the spray
gun has regulated itself.