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PFT G 5 c FU 230
14
Mortar Pump
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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- Close valve
- Let pump run against pressure until there is no more increase in pressure
- Switch off the machine
- If the required pressure is no longer attained, the maintenance-free pump must be
replaced
-
Check the backpressure
-
A backpressure of approx. 14 bar should be maintained in the hose by the screw
pump (for TWISTER D5-2,5)
NOTE:
The test pressure with water should be 5 to 10 bar above the expected mortar
conveying pressure!
An adverse position of the screw pump in the liner will result in water flowing back to
the hopper accompanied by a distinct gurgling noise. Switch the machine on and off
repeatedly until you find the position in which the rotor seals with the stator.
NOTE!
1.
Stator TWISTER D5-2,5 can be used up to 30 bar operating pressure.
2.
The minimum conveying distance depends mainly on how the mortar flows.
Heavy, coarse-grained mortar does not flow easily. Fluid mortars, filling
compounds and floor screed flow easily.
3.
Use thicker mortar hoses if you exceed an operating pressure of 30 bar.
4.
To avoid machine breakdowns and excessive wear on pump motor, pump shaft
and pump, always use original spare parts
PFT rotors
PFT stators
PFT pump shafts
PFT mortar pressure hoses
PFT clamps.
These components are compatible with one another and form a single constructive
unit together with the machine. If you do not follow these recommendations, you will
not only lose your warranty rights, but the quality of the mortar you are producing will
also suffer.
