PFT G 5 c FU, Operating Manual

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PFT G 5 c FU 230V Operating Manual Issued: 09.2007
Knauf PFT GmbH & Co. KG
31
Machine will not switch off - Air pressure safety switch
incorrectly set or defective
- Adjust air pressure safety switch
- Air hose or gaskets defective - Replace air hose or check
compressor
- Air tap on spraying gun defective
- Insufficient compressor output
- Air supply line not connected to
compressor
No mortar flow - Poor mixture in mixing tube Add more water
(air bubbles) - Motor clutch defective Replace motor clutch
- Mixing shaft defective If this doesn’t help, clean or replace
- Inlet funnel on mixing tube has
become wet
mixing shaft
Dry mixing tube inlet and
- Mortar clogs and narrows mixing
tube inlet
restart
“Thick-thin” mortar flow - Not enough water If there is not enough water,
- Water safety switch incorrectly
set or defective
increase by 10% for approx. ½ minute
and then slowly turn back to
- Mixing shaft defective; not
original PFT mixing shaft
normal setting or tighten or replace
pump components
- Pressure reducer incorrectly set
or defective
- Rotor worn out, defective
- Stator worn out or clamped too
loosely
- Clamp defective (oval)
- Inner wall of mortar hose
defective
Replace mortar hose
- Rotor too deep in pressure flange Check mixing shaft and motor
- Not original PFT spare parts clutch
Water level rises in mixing tube
during operation - Backpressure in mortar hose
higher than pump pressure
- Rotor or stator worn out Tighten or replace stator; if required,
also replace rotor
- Hose blockage due to mortar
being too thick (high pressure due
to low water factor)
Unblock hose
Fault lamp lights up Overload
- Motor safety switch triggered
(pump motor)
Clean mixing tube and increase
water supply when starting up
- due to pump jamming with dry
material
- due to insufficient water quantity
- Motor safety switch (2.5 A)
triggered (star wheel motor)
Clean hopper and star wheel
- Clogged material in hopper