PFT PFT G4, Руководство по эксплуатации, Страница: 16 / 68

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- Connect a 10 m conveying hose
- Couple the pressure tester with the outlet tap to the end of the hose
- Open the valve
- Switch on the machine and let just water run trough it until water comes out of
the outlet tape (to bleed the hose)
- Close the valve
- Let the pump run under pressure until the pressure no longer increases
- Switch off the machine
- If the required pressure is not achieved, the maintenance-free pump must be
replaced
- The pump with the clamp must be tightened
- Check the back pressure
In the hose, a back pressure of approx. 14 bar - from the rotor/stator pump
(for D 6-3) - should be maintained.
127(
The testing pressure with water should be approx. 5 - 10 bar above the anticipated
mortar pumping pressure!
([DPSOH
20 m conveying hose (25 mm
∅
) with plaster mortar requires the pump to be operated
at approx. 25 - 30 bar.
If the rotors are in an unfavourable position in the stator, the water flows back into the
mixing chamber with a distinct gurgling noise. By switching the machine on and off
again - and possibly repeating the process several times - find the position in which
the rotor pump forms a seal.
127(
1. Stator D6-3 can be used up to 30 bar operating pressure.
2. The maximum possible pumping distance is mainly dependent of the flowability of
the mortar. Heavy mortars with sharp edges have poor flowing capacity, whereas
fluid materials, filling compounds, floor screed etc. have good flowability.
3. If 30 bar operating pressure is exceeded, it is advisable to use thicker mortar
hoses.
4. To avoid machine failures and increased wear to the pump motor, pump shaft and
pump, original
- PFT rotors
- PFT stators
- PFT pump shafts
- PFT mortar pressure hoses
- PFT clamps should be used.
These components are designed for use together, and together with the machine they
form a single structural unit. If this recommendation is not adhered to, it not only
means that the guarantee is forfeited, it also means that the mortar quality is likely so
suffer.